Location: Makkah, Saudi Arabia; Riyadh, Saudi Arabia; Jeddah, Saudi Arabia; Dammam, Saudi Arabia
Job Description
The
Turbine & Precision Equipment Rigger
is responsible for executing highly critical, heavy, and precision lifting operations during power plant turbine outages and industrial maintenance shutdowns. This role demands exceptional technical expertise to safely handle multi-million dollar rotating equipment, gas/steam turbine components, and delicate machinery within tightly restricted spaces. The successful candidate must strictly adhere to engineered lifting plans, maintain zero-compromise safety standards, and display flawless precision under fast-paced outage timelines.
Key Responsibilities
Rigging Execution:
Safely attach, lift, guide, and position heavy turbine components and associated mechanical equipment in strict compliance with
approved, engineered lifting plans
.
Pre-Lift Assessment:
Thoroughly review critical technical parameters prior to every lift, including total load weight,
exact center of gravity
, designated lifting points, travel path clearances, and final landing arrangements.
Equipment Management:
Select, calculate, and inspect specialized rigging hardware such as synthetic/wire-rope slings, shackles,
spreader beams
, chain blocks, and specialized lifting accessories.
Compliance & Safety Verification:
Audit all lifting tackle before use to verify valid identification tags, current inspection status, and
Working Load Limits (WLL)
.
Precision Maneuvering:
Expertly guide immense structural loads through highly restricted areas and congested plant environments utilizing controlled mechanical methods and precise signaling.
Requirements
Experience:
Minimum of
3 to 5 years of proven experience
as an industrial rigger, with a strong preference for candidates who have completed major
turbine outages, power plant shutdowns, or heavy mechanical maintenance
.
Technical Skills:
Comprehensive knowledge of rigging mathematics, center-of-gravity calculations, crane signals, and rigging hardware capacities.
Certifications:
Valid third-party rigging certifications (such as
TUV, Bureau Veritas, Aramco, or equivalents
) are highly preferred.
Physical Capability:
Ability to work in confined spaces, at heights, and handle the physical demands of 12-hour shifts typical during emergency or scheduled outages.
Soft Skills:
Strong teamwork orientation, high attention to detail, and a strict commitment to safety protocols.
Makkah, Saudi Arabia; Riyadh, Saudi Arabia; Jeddah, Saudi Arabia; Dammam, Saudi Arabia
At Counterpart Health (CPH), a subsidiary of Clover Health, we are transforming healthcare with our primary care tool, Counterpart Assistant (CA), supporting Primary Care Physicians to improve patient outcomes at lower costs through early diagnosis and chronic care management.
As a Commercial Partnerships & Operations Director, reporting to the VP of Commercial Innovations & Partnerships, you will lead key commercial initiatives and strategic partnerships, working closely with CPH leadership. This senior individual contributor role requires strong organization, analytical skills, and execution focus, balancing detailed execution with strategic context to inform leadership decisions.
Responsibilities:
— Lead high-priority commercial initiatives by defining project plans, tracking milestones, mitigating risks, resolving dependencies, and ensuring timely delivery.
— Drive cross-functional execution across Commercial, Product, Engineering, Clinical, Operations, Legal, and external partners to align stakeholders and maintain momentum.
— Manage strategic partnerships by establishing governance, aligning objectives, driving executive engagement, resolving risks, and ensuring successful execution throughout the partnership lifecycle.
— Develop and lead analytical models, dashboards, and performance trackers to monitor results and inform commercial decision-making.
— Prepare executive communications including presentations, reports, and recommendations to guide leadership and external partners.
— Strengthen program execution by translating priorities into actionable plans with clear ownership, timelines, deliverables, and accountability.
— Enhance operational effectiveness by designing scalable processes, tools, templates, and reporting mechanisms to improve coordination and execution.
— Serve as a trusted commercial advisor by anticipating risks, challenging assumptions, recommending solutions, and maintaining alignment across initiatives.
Success milestones:
— Within 90 days: Understand CPH's commercial strategy, build relationships, and take ownership of key initiatives.
— Within 6 months: Independently manage a portfolio of initiatives and partnerships, implement project management processes, and deliver impactful analyses.
— Within 1 year: Become a trusted execution partner, lead multiple complex initiatives, strengthen partnerships, and scale the Commercial Innovations & Partnerships function.
Requirements:
— 6–10 years of experience in healthcare consulting, healthcare technology, or similar execution-focused roles in high-growth healthcare organizations.
— Preferably experience with Medicare, Medicare Advantage, value-based care, payer-provider dynamics, healthcare operations, business operations, program management, partnerships, or cross-functional execution.
— Proven ability to manage complex, cross-functional initiatives with multiple stakeholders and competing priorities; PMO or program management experience is a plus.
— Exceptional organizational and project management skills with a track record of bringing structure and accountability.
— Experience managing external partner or customer relationships.
— Strong analytical skills with advanced proficiency in AI tools, Excel, and Google Sheets, including financial modeling and dashboard creation.
— Excellent written and visual communication skills for executive presentations and synthesizing complex information.
— Ability to thrive in fast-paced environments, manage multiple priorities, and adapt to changing needs.
— Demonstrated influence and results through organization, collaboration, communication, and execution.
Conditions:
— Full-time remote position based in the USA.
— Competitive base salary with equity opportunities, performance-based bonus, 401k matching, and regular compensation reviews.
— Comprehensive medical, dental, and vision coverage.
— Mental health support including No-Meeting Fridays, monthly holidays, mental health resources, and flexible time-off.
— Remote-first culture supporting global collaboration.
— Professional development programs, mentorship, funding, and performance feedback.
— Additional perks: Employee Stock Purchase Plan, office setup reimbursement, monthly cell phone and internet stipend, paid parental leave.
Counterpart Health values diversity and inclusion and is an Equal Opportunity Employer. The salary range is approximately $150,000 to $195,000 USD per year.
Location: Boston, MA
Workplace: OnSite
At WHOOP, we're on a mission to unlock and inspire performance for life. WHOOP empowers members to perform at a higher level through a deeper understanding of their bodies and daily lives.
WHOOP is hiring a Senior Battery Engineer focused on Cell Engineering to evaluate, qualify, and improve lithium-ion cells for current and future products. You will apply expertise in electrochemistry, cell design, testing, manufacturing, and failure analysis to ensure battery cells meet performance, safety, reliability, and product integration requirements.
RESPONSIBILITIES:
- Evaluate new cell designs, chemistries, form factors, and suppliers against product specifications and acceptance criteria.
- Develop and execute cell qualification plans across incoming and outgoing quality control, performance, safety, reliability, environmental, and life-cycle testing.
- Plan and conduct design of experiments (DOEs) to optimize cells for fit and performance needs.
- Collaborate with battery system engineers to translate cell attributes into pack designs that meet overall product requirements.
- Operate battery cyclers, environmental chambers, and laboratory equipment; create representative test profiles and analyze electrochemical data.
- Partner with suppliers and cross-functional engineering teams to support process qualification, manufacturing readiness, and battery integration.
- Lead cell-related failure investigations, root cause analysis, and corrective-action verification with suppliers and third-party laboratories.
- Document and communicate qualification results, technical risks, and recommendations through specifications, reports, and design reviews.
- Ability to travel up to 15% domestically and internationally to support supplier visits, factory audits, qualification activities, and failure investigations.
QUALIFICATIONS:
- Bachelor’s degree in Chemical Engineering, Materials Science, Mechanical Engineering, or a related field with 5+ years of relevant experience; or a master’s degree or PhD with 2+ years of relevant experience.
- Strong understanding of lithium-ion electrochemistry, cell design, manufacturing processes, and degradation mechanisms.
- Hands-on experience with cell characterization, qualification testing, and battery cyclers such as Arbin, Maccor, or similar systems.
- Experience analyzing battery data, conducting failure investigations, and developing clear technical recommendations.
- Experience collaborating with battery suppliers, manufacturing partners, and cross-functional product development teams.
- Experience with Python, MATLAB, Minitab, JMP, or similar tools for data processing, statistical analysis, and visualization.
- Familiarity with cell teardown, cross-sectioning, microscopy, CT scanning, gas analysis, or other advanced failure analysis techniques.
- Strong commitment to embracing and leveraging AI tools in day-to-day tasks, ensuring AI-assisted work aligns with the same high-quality standards as personal contributions.
This role is based in the WHOOP office located in Boston, MA. The successful candidate must be prepared to relocate if necessary to work out of the Boston, MA office.
Interested in the role, but don’t meet every qualification? We encourage you to still apply! At WHOOP, we believe there is much more to a candidate than what is written on paper, and we value character as much as experience. As we continue to build a diverse and inclusive environment, we encourage anyone who is interested in this role to apply.
WHOOP is an Equal Opportunity Employer and participates in E-verify https://www.e-verify.gov/ to determine employment eligibility. It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability.
The WHOOP compensation philosophy is designed to attract, motivate, and retain exceptional talent by offering competitive base salaries, meaningful equity, and consistent pay practices that reflect our mission and core values.
At WHOOP, we view total compensation as the combination of base salary, equity, and benefits, with equity serving as a key differentiator that aligns our employees with the long-term success of the company and allows every member of our corporate team to own part of WHOOP and share in the company’s long-term growth and success.
The U.S. base salary range for this full-time position is $140,000 - $195,000. Salary ranges are determined by role, level, and location. Within each range, individual pay is based on factors such as job-related skills, experience, performance, and relevant education or training.
In addition to the base salary, the successful candidate will also receive benefits and a generous equity package.
Location: EMEA; Toronto; Ireland; Portugal; United Kingdom; Spain
Workplace: Remote
✨ ONE PLATFORM, A WHOLE WORLD OF OPPORTUNITY
The best jobs have always clustered in a handful of the world's wealthiest cities. But talent is everywhere. Oyster set out to close that gap - building a global employment platform that lets companies hire, pay, and care for brilliant people anywhere.
We're proof that a high-performing culture doesn't need an office. Distributed across 60+ countries since 2020, we've built something the industry keeps noticing:
- Ranked #10 of 250 on TIME and Statista's 2026 list of America's Top WorkTech Companies https://www.oysterhr.com/library/oyster-hr-named-10-of-americas-top-worktech-companies-of-2026-by-time
- Named one of America's Greatest Startup Workplaces 2026 https://www.oysterhr.com/library/oyster-2026-newsweek-award by Newsweek
- A G2 Spring 2026 Leader https://www.oysterhr.com/library/oyster-named-best-roi-for-any-global-employment-platform-for-g2-spring-2026 across Employer of Record, Global Employment, Multi-country Payroll, and HR Compliance
- The only B Corp-certified global employment platform ~ independently verified since 2023
Two of those rankings measured our business impact from the outside. One measured how our own people feel about working here. They landed in the same place ~ because at Oyster, culture and performance aren't separate conversations. They're the same one.
And we're just getting started. If you want to do the best work of your career alongside people who care as much as you do, we'd love for you to apply.
THE ROLE
Location: While this position is posted in a specific location, all of Oyster's positions are fully remote and you can work from home. Forever. To create the best experience for our new hire, this role requires you to be based within -5 / +3 UTC.
As Senior Director of Product for our Employer of Record offering, you will own the product vision, strategy and execution across the full EOR employment lifecycle, from onboarding and documentation through time off, benefits, pay and offboarding. That spans the workflows our customers use, the internal tooling our operations teams rely on, and the experience of the employees we employ on our customers' behalf.
This is the core of Oyster's business and it is operationally and legally complex. A payroll delay, a contract issue or a compliance gap becomes a customer escalation, a legal question and an operations fire on the same day. We want someone who treats the whole journey as one experience, for our customers and for the people who have to run it.
As a part of the senior leadership team at Oyster, you will be shaping strategy well beyond your own teams, setting direction across multiple product development teams and trusted to make the calls that define where this part of the business goes. You will be leading through real change: we are raising the bar on performance, moving toward direct feedback and radical candour, and reshaping how we build with AI.
WHAT YOU WILL OWN
- Own the product vision, strategy and roadmap for EOR, and connect team-level work to company outcomes.
- Be accountable for the end-to-end performance of the platform, including the downstream operational reality, not only what ships.
- Turn highly localised, complex regulation into scalable, automated workflows rather than manual workarounds held together by our operations teams.
- Prioritise across new capability, regulatory requirements, technical debt and operational improvement, across several teams at once.
- Coach and grow a team of product managers and group product managers, moving them from delivering features to owning problems and outcomes.
- Partner with Engineering and Design leadership as a real counterpart, holding proper tension on trade-offs without dominating or giving in too easily.
- Partner with Operations, Legal and Finance to shape where this business goes, including the margin and risk picture.
- Build an AI-first way of working in the product organisation: how we discover, prototype and learn, not just what we ship.
WHAT WE ARE LOOKING FOR
- 10+ years in product management, including 5 to 7 years leading other product managers, with measurable business and customer outcomes behind you.
- Experience in operationally or legally complex B2B or Fintech. HR tech, EOR, payroll or compliance is ideal, though the complexity matters more to us than the sector.
- A systems thinker who starts from first principles and diagnoses before proposing.
- Hands-on experience using AI to change how your team works, not only what it ships. We will ask what decision changed because of something you learned.
- Able to set product vision at business-unit level and generate real buy-in when priorities shift.
- Proven people leadership: coaching product managers into leaders, holding a clear bar, having the difficult conversation early.
- Experience leading through structural change, and comfort with ambiguity as an opportunity rather than a risk.
- Communication strong enough to influence senior stakeholders, backed by a mechanism that turns agreement into delivery.
You'll also need
- A reliable home internet connection, or be able to get one.
- Fluent English language skills.
HOW WE WORK TOGETHER AT OYSTER
Our values guide the work we do, the decisions we make, and the culture that makes Oyster what it is. We make it happen—progress is our default setting. We drive change, we build and give trust, and we move as one united team.
Our mission is to create a more equal world of work: helping companies everywhere hire, pay, and care for talent anywhere. Everything we do ladders up to our mission. We embrace asynchronous, collaborative work and share how we operate in the Oyster Public HQ https://oysterhr.notion.site/Welcome-to-The-Reef-Oyster-s-Open-Source-Employee-Guide-fc482e3f107c4afd8c85ed217f1d0c1d so other global teams can learn from us.
HOW YOU WORK
With diverse locations, cultures, and needs, we created How YOU Work; https://oysterhr.notion.site/How-YOU-work-ac16c1932e314ffd8cb693e332458395 a program supporting your whole human experience at Oyster:
- Work from anywhere: Oyster has no borders or HQ. As long as work is timely, your team is supported, and you're authorized to work where you live, you can work from anywhere.
- Paid time off: Enjoy 40 days off per year (including holidays and vacation), or more if required by your country.
- Mental health support: Access Plumm https://oysterhr.notion.site/Plumm-3b5e7e70dec6428e975f68f25972cfb7, our mental well-being service.
- Wellbeing allowance: Each month, receive a wellbeing allowance in your ThanksBen wallet to spend on a wide range of options.
- Flexible parental leave: All new parents are eligible for at least three months’ paid leave, with job protection for up to 12 months or as required locally.
- WFH stipend: Receive a stipend for your laptop and home office equipment to get you set up quickly.
✨ THE BEST JOBS SHOULD BE AVAILABLE TO EVERYONE
We embrace diverse perspectives and intentionally build our product and company with an inclusive, global mindset. We encourage you to apply, even if you don’t meet every criterion, and are committed to a trust-based, thriving environment.
Oyster is committed to ensuring equal opportunity of employment for qualified persons with disabilities and actively fosters an inclusive work environment. If you require reasonable accommodations throughout the recruiting process, please email jobs@oysterhr.com with the subject line: Interview Accommodations.
Our available positions are on our careers page. Our team will only contact you from an @oysterhr.com email, and we will never ask for money as part of an interview process or job offer. If you receive a suspicious email about Oyster jobs or are directed to a site other than www.oysterhr.com/careers http://www.oysterhr.com/careers, please report it via our Compliance and Ethics Helpline https://faceup.com/c/8tpzyyye.
Location: United States
Location & Work Arrangement
Costa Mesa, CA (On-Site) preferred
Remote opportunities may be considered
for exceptionally strong candidates located elsewhere in the U.S.
Employment Details
Contract:
6 months, with potential for extension or conversion to a permanent position
Target Bill Rate:
Up to $120/hour
Requirements
Must be a
U.S. Citizen
Must be
eligible to obtain and maintain a Top Secret security clearance
WHAT YOU'LL DO
Thermal design and analysis of unmanned air vehicles at conceptual, preliminary, and detailed design maturities
Define thermal system architectures and material selection strategies for vehicles operating in demanding flight environments
Thermal analysis of flight vehicles using CFD, FEA, and engineering methods
Material response modeling under combined thermal and mechanical loads
Transient thermal analysis for time-varying mission profiles
Ground test planning, execution, and analysis in specialized thermal test facilities
Flight test planning, execution, and post-flight thermal data analysis
Use first principles and MATLAB/Python models to inform design decisions
Collaborate with aerodynamics, structures, electrical, and systems engineers on integrated solutions
Present thermal status at formal reviews internally and with customers
Prepare formal documentation (specifications, test procedures, technical reports)
REQUIRED QUALIFICATIONS
MS or higher degree in Aerospace Engineering, Mechanical Engineering, or Applied Physics with focus on heat transfer and fluid dynamics
In-depth understanding of heat transfer, fluid dynamics, and high-temperature environments
5+ years of experience in aerospace thermal engineering on rocket, aircraft, or missile programs
Experience with thermal analysis in high-speed flight regimes
Thermal analysis experience using CFD (STAR-CCM+, ANSYS Fluent) and/or FEA thermal solvers
Experience with thermal-structural coupling
Ground testing experience with thermal instrumentation and data acquisition
Strong programming skills in MATLAB, Python, or similar for tool development
Experience preparing formal documentation
CAD experience with SolidWorks or Siemens NX
Passion for defending the United States and her allies
Ability to obtain and hold a U.S. Top Secret security clearance
PREFERRED QUALIFICATIONS
Experience with material response modeling in extreme thermal environments
Knowledge of material degradation and surface phenomena under demanding conditions
Experience with specialized thermal ground test facilities
Experience with chemical kinetics and finite-rate chemistry modeling
Flight test experience including instrumentation design and post-flight analysis
Experience with thermal-structural analysis codes (NASTRAN, Abaqus, ANSYS Mechanical)
Material characterization experience at elevated temperatures
Experience with manufacturing and assembly of thermal systems
Active U.S. security clearance
Location: United States
Location & Work Arrangement
Costa Mesa, CA (On-site) preferred
Remote opportunities may be considered
for exceptionally strong candidates located elsewhere in the U.S.
Employment Details
Contract:
6 months, with potential for extension or conversion to a permanent position
Target Bill Rate:
Up to $120/hour
Requirements
Must be a
U.S. Citizen
Must be
eligible to obtain and maintain a Top Secret security clearance
What You'll Do
· Own thermal design and analysis for integrated hardware products, including drones, aircraft, missiles, or related defense systems.
· Use first-principles engineering judgment to determine the right level of analysis for each design decision, including hand calculations, spreadsheets, MATLAB / Python models, FEA, and CFD.
· Define thermal architectures that can withstand rugged environments, demanding flight envelopes, and operational edge cases, including hot, cold, transient, and mission-specific thermal conditions.
· Partner with electrical, mechanical, aerospace, software, and systems engineers to document power dissipation, operating modes, thermal constraints, and design tradeoffs.
· Build and maintain thermal FEA / CFD models to predict system performance, establish design limits, and define red / yellow operating thresholds for test and field use.
· Define and execute prototype builds and thermal tests, including CAD support, sensor selection, DAQ setup, data post-processing, and results documentation.
· Present thermal status, risks, tradeoffs, timelines, and recommendations in internal design reviews and customer-facing technical reviews.
· Develop internal tools, workflows, or analysis methods that improve speed, consistency, and quality of thermal decision-making.
· Support failure reviews and root-cause investigations using test data, thermal analysis, and first-principles reasoning.
Required Qualifications
· MS or PhD in Mechanical Engineering, Aerospace Engineering, Applied Physics, or a related field with a focus on heat transfer, fluid dynamics, thermal sciences, or thermal systems.
· 5+ years of experience designing, analyzing, or validating thermal systems for integrated hardware products.
· Strong first-principles understanding of heat transfer and fluid dynamics, including conduction, convection, radiation, fluid flow, and transient thermal behavior.
· Experience supporting thermal design for aerospace, aircraft, rocket, missile, UAV, defense, or other high-performance hardware systems.
· Experience using thermal analysis, modeling, simulation, and/or physical test data to drive design decisions for passive or active thermal management systems.
· Ability to communicate technical tradeoffs clearly across engineering, program, and customer stakeholders, and ability to obtain and maintain a U.S. Top Secret security clearance.
Preferred Qualifications
· Experience with thermal analysis tools such as STAR-CCM+, ANSYS, Icepak, Flotherm, or comparable FEA / CFD platforms.
· Experience using MATLAB, Python, spreadsheets, or similar tools for first-order thermal modeling, transient analysis, or engineering trade studies.
· Experience designing thermal hardware such as heat sinks, cold plates, fans, pumps, heat exchangers, thermal interface materials, liquid cooling systems, or air-cooling systems.
· Experience planning or executing thermal tests, including sensor selection, data acquisition, data post-processing, and correlation of test results to analysis.
· Experience with SolidWorks, Siemens NX, or comparable CAD tools.
· Experience supporting formal design reviews, customer reviews, flight test, qualification testing, or fielded hardware.
· Experience developing reusable analysis tools, automation workflows, reduced-order models, or other methods that improve analysis speed and consistency.
· Strong motivation to support Client’s mission of defending the United States and allied partners.
Location: Costa Mesa, United States
📍
Location:
Costa Mesa, California
📄
Employment Type:
Contract-to-Perm
🏢
Work Arrangement:
Remote Opportunity for Top Candidates
🚀
Start Date:
TBD
💰
Compensation:
TBD — based on skills and experience
Important Screening Requirements
Remote opportunity is open to qualified candidates
within the United States
.
Relocation assistance is available to qualified candidates from other countries.
5+ years of experience
designing, analyzing, or validating thermal systems for integrated hardware products.
MS or PhD
in Mechanical Engineering, Aerospace Engineering, Applied Physics, or a related field, with a focus on heat transfer, fluid dynamics, thermal sciences, or thermal systems.
Strong first-principles understanding of
heat transfer and fluid dynamics
.
Experience supporting thermal design for
aerospace, aircraft, rocket, missile, UAV, defense, or other high-performance hardware
.
Experience with thermal analysis, modeling, simulation, and/or physical test data.
Ability to communicate technical tradeoffs across engineering, program, and customer stakeholders.
Ability to obtain and maintain a
U.S. Top Secret security clearance
, where required.
About the Role
We are seeking a
Senior Thermal Engineer
to own thermal design and analysis for advanced defense hardware across drones, aircraft, missiles, and related flight systems.
This role is ideal for an engineer with deep expertise in
heat transfer and fluid dynamics
, strong thermal analysis capabilities, and the engineering judgment to select the appropriate level of analysis—from first-order hand calculations through detailed FEA and CFD—to support rapid and effective design decisions.
You will work across multidisciplinary engineering teams to develop thermal architectures, evaluate system performance, support prototype testing, and drive thermal design decisions for demanding operating environments.
What We’re Looking For
We’re looking for a senior thermal engineer who can take ownership of thermal engineering
from early design and analysis through testing and validation
.
The ideal candidate combines strong fundamentals in heat transfer and fluid dynamics with hands-on experience applying thermal analysis to complex, high-performance hardware. You should be comfortable working across disciplines, making engineering tradeoffs, troubleshooting thermal issues, and communicating technical recommendations to both engineering and customer stakeholders.
Key Responsibilities
Thermal Design & Analysis
Own thermal design and analysis for integrated hardware products, including
drones, aircraft, missiles, and related defense systems
.
Apply first-principles engineering judgment to determine the appropriate level of analysis for each design decision, including:
Hand calculations
Spreadsheets
MATLAB/Python models
FEA
CFD
Define thermal architectures capable of operating in rugged environments and demanding flight envelopes.
Evaluate
hot, cold, transient, and mission-specific thermal conditions
.
Cross-Functional Engineering
Partner with electrical, mechanical, aerospace, software, and systems engineers to document:
Power dissipation
Operating modes
Thermal constraints
Design tradeoffs
Build and maintain thermal
FEA/CFD models
to predict system performance, establish design limits, and define red/yellow operating thresholds for testing and field use.
Prototype Testing & Validation
Define and execute prototype builds and thermal tests.
Support CAD activities, sensor selection,
DAQ setup
, data post-processing, and test-result documentation.
Use test data and thermal analysis to validate designs and support engineering decisions.
Technical Leadership & Continuous Improvement
Present thermal status, risks, tradeoffs, timelines, and recommendations during internal design reviews and customer-facing technical reviews.
Develop internal tools, workflows, and analysis methods that improve the speed, consistency, and quality of thermal decision-making.
Support failure reviews and root-cause investigations using test data, thermal analysis, and first-principles engineering reasoning.
Required Qualifications
MS or PhD
in Mechanical Engineering, Aerospace Engineering, Applied Physics, or a related field focused on heat transfer, fluid dynamics, thermal sciences, or thermal systems.
5+ years
of experience designing, analyzing, or validating thermal systems for integrated hardware products.
Strong first-principles understanding of:
Conduction
Convection
Radiation
Fluid flow
Transient thermal behavior
Experience supporting thermal design for aerospace, aircraft, rocket, missile, UAV, defense, or other high-performance hardware systems.
Experience using thermal analysis, modeling, simulation, and/or physical test data to drive design decisions for passive or active thermal management systems.
Ability to clearly communicate technical tradeoffs across engineering, program, and customer stakeholders.
Ability to obtain and maintain a
U.S. Top Secret security clearance
, where required.
Preferred Qualifications
Experience with thermal analysis tools such as:
STAR-CCM+
ANSYS
Icepak
FloTHERM
Comparable FEA/CFD platforms
Experience using
MATLAB, Python, spreadsheets
, or similar tools for first-order thermal modeling, transient analysis, or engineering trade studies.
Experience designing thermal hardware such as:
Heat sinks
Cold plates
Fans
Pumps
Heat exchangers
Thermal interface materials
Liquid cooling systems
Air-cooling systems
Experience planning or executing thermal tests, including sensor selection, data acquisition, data post-processing, and correlation of test results to analysis.
Experience with
SolidWorks, Siemens NX, or comparable CAD tools
.
Experience supporting formal design reviews, customer reviews, flight testing, qualification testing, or fielded hardware.
Experience developing reusable analysis tools, automation workflows, reduced-order models, or other methods that improve analysis speed and consistency.
Location: Ukraine
Workplace: Remote
Who Are We?
Welltech is a global wellness technology company with Ukrainian roots. Our mission is to build and scale wellness apps globally through state-of-the-art, tech-driven performance marketing.
We are one of the most established players in the wellness app space, and we are accelerating. Over 25.5 million people across the world use our apps — Muscle Booster, Yoga-Go, and WalkFit — to build healthier habits, move more, and feel better every day. Every subscription represents a real person making a real change in their life, and we take that seriously.
With 500+ people across hubs in Cyprus, Ukraine, Poland, Spain, and the UK, we combine the scale of a market leader and the drive of a team that's just getting started.
What We're Looking For
We're looking for a Total Rewards Specialist to own the analytics and frameworks behind how we pay: compensation ranges, review cycle models, market benchmarking, pay gap analysis; plus our benefits programs across our hubs. Strong with data, fluent in spreadsheets, confident with stakeholders.
Key Responsibilities:
- Build and maintain compensation analytics and reporting that leadership and HRBPs actually use.
- Maintain and extend compensation ranges across hubs, including new locations and cooperation models.
- Run the mechanics of our compensation review cycles: matrices, budget models, scenario costing, system settings, compensation statements.
- Run market benchmarking end to end: data submissions, survey analysis, positioning conclusions, and a clear recommendation
- Support the EU Pay Transparency rollout: pay gap analysis, action plans where gaps exceed thresholds, and getting us ready to answer pay questions properly
- Contribute to job architecture, job evaluation and levelling.
- Design and administer bonus schemes and keep the rules defensible and documented.
- Own benefits renewals end to end: benchmarking, vendor negotiation prep, business cases, contracts with Procurement, comms.
- Own the benefits budget and track effectiveness.
- Use AI and automation to take manual work out of recurring analytics and processes.
Required skills
- Solid experience in Compensation & Benefits roles, with a deep understanding of compensation frameworks and benefits management.
- Demonstrated expertise in implementing effective compensation and benefits practices for international markets.
- Strong ability to collect, validate, analyze, and interpret data, identify trends, and make data-driven decisions while making complex data easy to understand.
- Experience in conducting market research and benchmarking to ensure competitive compensation and benefits offerings.
- You are considered an Excel expert by your peers, have advanced proficiency in Google Spreadsheets and Presentations.
- Capable of managing multiple projects simultaneously and ensuring timely, successful execution.
Candidate journey
⭕️ Recruiter call --> ⭕️ Meet a team member --> ⭕️ Skills assessment--> ⭕️ Meet the Leadership team
✨ Why You’ll Love Being Part of Welltech:
- Grow Together: Join a culture that champions both personal and professional growth. Here, you’ll thrive as we learn, evolve, and succeed together.
- Lead by Example: No matter your role, your leadership matters. Every team member is empowered to inspire and make an impact.
- Results-Driven: We’re all about achieving meaningful outcomes. It’s not just about the effort, but the difference we make every day.
- We Are Well-Makers: Be part of a movement that’s creating a healthier, happier world. Together, we make well-being a reality!
Check out some of our products
Muscle Booster — https://musclebooster.fitness/
Yoga-Go — https://yoga-go.io/
Omo — https://omo-weight-loss.app/
FastEasy — https://fasteasy.life/
WalkFit - http://walkfit.pro
Location: Berlin
adjoe builds the technologies behind mobile app growth and monetization, challenging the status quo of adtech by redefining how apps acquire users and generate revenue. Our two products, Playtime Arcade and adjoe Ads, sit at opposite ends of the mobile advertising spectrum: rewarded engagement and programmatic in-app advertising. Together they run on 13% of the world’s smartphones, connecting advertisers, publishers, and hundreds of millions of users, with one goal: making mobile advertising work better for everyone in the ecosystem.
Next-Gen Machine Intelligence for Auctions & Real-Time Bidding
The Data Science Research team builds the foundational algorithms that govern real-time bidding, budget pacing, and allocation mechanics across our products. Operating as a horizontal deep-tech layer, the team leverages advanced AI—specifically reinforcement learning, objective-based optimization, and control theory—to deliver critical systems that perfectly harmonize advertiser ROI, platform health, and user relevance. These frameworks scale adjoe’s products beyond standard industry limitations, utilizing behavioral and transactional data from over 770 million users.
The team operates at the intersection of high-load, low-latency engineering, auction mechanism design, and state-of-the-art machine learning. Acting as the company’s internal science bar raiser, they translate complex business constraints into mathematical objectives. The stack is optimized for high throughput: PyTorch for training deep learning and RL models, distributed architectures for large-scale Bayesian inference, Trino and Athena for querying massive user-behavior data lakes, and dedicated GPU infrastructure. The full lifecycle of these AI capabilities is owned by the team—from academic paper translation and offline prototyping to deploying core algorithmic frameworks built to sustain ultra-low latency, real-time production environments evaluating tens of thousands of requests per second.
Your Mission & Who We Are Looking For:
- PhD or equivalent research depth, with a production track record. You have a PhD in CS, Statistics, Math, or Physics (or an MSc with extensive industry research) and a track record of peer-reviewed publications in fields like Computational Advertising, Auction Theory, Mechanism Design, or Game Theory. You’ve spent 4+ years optimizing complex systems through automated algorithms in AdTech, marketplaces, or high-frequency trading.
- You translate research into production, not just prototypes. You distill SOTA research into robust, production-ready code optimized for sub-millisecond latency. At adjoe, that means architecting sophisticated auction mechanics, real-time bidding engines, and allocation algorithms serving millions of requests across a stack built on 770 million users.
- Deep expertise in Reinforcement Learning and Optimization. You have hands-on, deep theoretical and technical expertise in objective-based optimization, control theory, or RL applied specifically to bidding, pricing strategy, and budget pacing under extreme production constraints.
- Mastering high-dimensional data at scale. Large-scale Bayesian inference and handling sparse, high-dimensional advertising data are core to your work. You are strongly proficient in Python and related stacks, and know exactly how to architect scalable data pipelines to feed real-time optimization models.
- Raises the technical bar around them. You lead architectural debates, collaborate tightly with Product Managers and Engineers to map business goals to mathematical objective functions, mentor junior scientists, and drive the team’s research direction without needing a roadmap handed to you.
🌎 WE WELCOME APPLICATIONS FROM TALENT WORLDWIDE AND PROVIDE RELOCATION SUPPORT TO HAMBURG, GERMANY FOR THOSE READY TO JOIN OUR TEAM.
What’s in It for You?
At adjoe, you’re not here to just close JIRA tickets, you’re helping build the infrastructure behind one of the most impactful platforms in adtech. The systems you work on will reach hundreds of millions of users and power billions of decisions every day.
- Go Big. Own projects with impact on 770M users and push adtech boundaries.
- Move Fast. Ship solutions multiple times a day, learn from results, and keep momentum.
- Be Direct. Solve problems openly and collaborate across teams.
- Thrive Together. Grow with a diverse, global team of people from over 40 different countries that learn from each other.
- Have Fun. Celebrate wins, enjoy daily victories, and bring your energy.
We welcome applications from people who will contribute to the diversity of our company.
Location: London
Workplace: OnSite
Company Description
We’re http://checkout.comCheckout.com http://Checkout.com. You might not know our name, but companies like eBay, Spotify, Klarna, Uber, and Sony do, because we’re behind many of the digital experiences you use every day.
We are where the world checks out, enabling over 10 billion transactions yearly for more than one billion global shoppers.
Whether you want to book a holiday, order food, renew a subscription, or check out online, there’s a good chance our tech powers the payments behind the scenes. Our platform helps the most ambitious businesses deliver effortless digital experiences, at scale.
If you want to do career-defining work, you’ve come to the right place. We move fast, think globally, and believe great teams are built by hiring exceptional people with conviction, curiosity, and the desire to make an impact.
With 20 offices across six continents and London as our HQ, we’re shaping the future of fintech – and we’re just getting started.
We are looking for a pragmatic Global Equity Tax Specialist to join our Tax team.
This role is primarily responsible for global equity tax at Checkout.com http://Checkout.com. You will act as the designated equity tax specialist, supported by the Employment Tax Manager, and will provide practical technical advice while improving the processes, controls and data that support equity activity, payroll, reporting and employee communications.
The role sits at the intersection of Tax, Equity, Finance, Payroll, People, Legal, Accounting, Data and external advisers. You will help establish clear ownership, translate technical tax requirements into workable processes, and support the resolution of historic and live compliance matters.
This is an excellent opportunity for someone who enjoys balancing hands-on technical work with process improvement, remediation, stakeholder management and continuous improvement in a business that values pace, curiosity and better ways of working.
KEY RESPONSIBILITIES
GLOBAL EQUITY TAX
- Act as the key equity tax specialist within the Tax team, providing practical and commercially focused advice on the employment tax treatment of equity arrangements and related events across their lifecycle.
- Provide tax input into plan design, country implementation, employee events, cross-border situations, liquidity activity, system changes and other business initiatives.
- Assess the tax treatment of equity activity across relevant jurisdictions, including sourcing, apportionment, withholding, payroll and reporting requirements.
- Identify when matters can be handled internally and when specialist local advice is required.
- Monitor legislative and business changes affecting equity taxation, withholding, reporting and cross-border treatment, translating them into clear actions for the business.
PAYROLL, REPORTING AND COMPLIANCE
- Work closely with Equity and Payroll to support accurate and timely withholding, payroll processing, payslip reporting, employee funding and downstream reporting.
- Maintain or support the global equity tax compliance calendar, coordinating returns, notifications, reporting packs, approvals and supporting evidence.
- Review the quality and completeness of equity tax data used for payroll, reporting, tax calculations and compliance submissions.
- Identify, assess and remediate historic or live issues, including missing or late filings, incorrect withholding, incomplete reporting, data weaknesses and participant-level exceptions.
- Support tax authority enquiries, audits, voluntary disclosures and other remediation activity, coordinating facts and evidence across teams and external advisers.
OPERATING MODEL, PROCESSES AND CONTROLS
- Build and continuously improve the global equity tax operating model, including ownership, hand-offs, escalation routes, service expectations and control requirements.
- Create and maintain practical country guidance, process documentation, decision logs, filing trackers, data specifications, exception logs and evidence trails.
- Help develop a scalable and audit-ready approach to managing equity tax across jurisdictions, while maintaining appropriate flexibility for local requirements.
- Support the design and implementation of system or process changes that affect equity tax, payroll, reporting or employee communications.
STAKEHOLDER AND ADVISER MANAGEMENT
- Partner with Finance, Treasury, Payroll, People, Legal, Equity, Accounting, Strategic Finance, Data and other teams so that equity tax considerations are understood early and embedded into business decisions.
- Manage relationships with external tax advisers and other providers where required, setting clear briefs, challenging advice and deliverables appropriately, and converting external support into practical internal processes and retained knowledge.
- Develop and maintain employee-facing equity tax guides, FAQs and other explanatory materials, explaining tax mechanics clearly without presenting Checkout.com http://Checkout.com as providing personal tax advice.
- Provide clear updates on risks, decisions, dependencies, remediation activity and recommended actions to the Employment Tax Manager and relevant stakeholders.
WIDER EMPLOYMENT TAX CONTRIBUTION
- Support the Employment Tax Manager with wider global employment tax advisory, compliance, risk management and process-improvement priorities where appropriate.
- Contribute to a high-performing team culture by taking ownership, sharing knowledge, challenging existing approaches constructively and improving how we work.
SKILLS & EXPERIENCE
- Significant experience in global equity tax, gained in an advisory and/or in-house environment.
- Strong technical knowledge of the employment tax treatment of equity arrangements across multiple jurisdictions, including cross-border employees, sourcing, apportionment, withholding, payroll and reporting.
- Practical understanding of how equity tax interacts with payroll, employee data, finance processes and local compliance requirements.
- Experience managing or supporting equity tax compliance across multiple jurisdictions, with sound judgement about when local advice is needed.
- Experience identifying and remediating compliance gaps, including missing filings, historic withholding issues, late or inaccurate reporting, participant-level issues and weaknesses in data or controls.
- Demonstrable experience building processes, controls, documentation, country guidance and operating models in an environment where responsibilities or ways of working are still developing.
- Confidence working with data and financial systems, including the ability to interrogate and validate large datasets and use spreadsheets, equity administration platforms, Workday and other reporting tools effectively.
- Experience working with external advisers, with the ability to brief, challenge and manage them effectively while retaining ownership of the technical position and business outcome.
- Strong communication and stakeholder-management skills, with the ability to explain complex tax issues clearly and influence a wide range of partners.
- A qualified accountant or tax adviser, or equivalent professional experience.
- Private-company equity experience would be advantageous, particularly where the role has involved complex data, evolving processes, employee liquidity activity or significant change.
- Experience in financial services, payments, fintech or another complex, multinational or regulated environment would be advantageous.
- An interest in using approved technology and AI-enabled tools to improve quality, insight and efficiency.
- Hands-on, curious and delivery-focused, with sound judgement and the ability to balance detail, pace and competing priorities.
Additional Information
Bring all of you to work
We create the conditions for high performers to thrive, through real ownership, fewer blockers, and work that makes a difference from day one.
Here, you’ll move fast, take on meaningful challenges, and be recognized for the impact you deliver. It’s a place where ambition gets met with opportunity, and where your growth is in your hands.
We work as one team, and we back each other to succeed. So whatever your background or identity, if you’re ready to grow and make a difference, you’ll be right at home here.
It’s important we set you up for success and make our process as accessible as possible. So let us know in your application, or tell your recruiter directly, if you need anything to make your experience or working environment more comfortable.
Life at Checkout.com http://Checkout.com
We understand that work is just one part of your life. Our hybrid working model offers flexibility, with three days per week in the office to support collaboration and connection.
Curious about what it’s like to be part of our team? Visit our Careers Page https://www.checkout.com/careers to learn more about our culture, open roles, and what drives us.
For a closer look at daily life at Checkout.com http://Checkout.com, follow us on LinkedIn https://www.linkedin.com/company/checkout/life/ and Instagram https://www.instagram.com/checkout_com/
Location: Canada
Workplace: remote
About Xsolla
Xsolla is a global commerce company with robust tools and services to help developers solve the inherent challenges of the video game industry. From indie to AAA, companies partner with Xsolla to help them fund, distribute, market, and monetize their games. Grounded in the belief in the future of video games, Xsolla is resolute in the mission to bring opportunities together, and continually make new resources available to creators. Headquartered and incorporated in Los Angeles, California, Xsolla operates as the merchant of record and has helped over 1,500+ game developers to reach more players and grow their businesses around the world. With more paths to profits and ways to win, developers have all the things needed to enjoy the game.
For more information, visit xsolla.com.
About the Role
We're looking for a Staff Engineer to own the smart wallet and account abstraction layer of Xsolla's Web3 platform. This is an individual contributor role with outsized technical scope: you'll be the technical anchor for how millions of players get an on-chain account they never have to think about — setting direction, making hard architectural calls, and raising the bar across the org.
Concretely, you'll own the account model behind Xsolla ZK, our zkSync-based L2, and the wallet that sits inside Xsolla App. Every player who signs in with Xsolla ID receives a deterministic, non-custodial smart account — derived from their identity claim, identical on every device, with private keys that never leave the client. That account is not a separate "wallet" screen: it is the player's inventory, and it backs minting, gifting, trading on our Bazaar marketplace, Merkle-based reward airdrops, gas sponsorship, and an in-app dApp browser that exposes the same signer to third-party applications through an EIP-1193 provider. You'll own the primitives underneath all of it: the ERC-4337 user operation lifecycle, EIP-7702 delegation, session keys and origin-bound Smart Sessions, paymaster and gas abstraction strategy, and the custody and recovery roadmap — including the move from raw key export to MPC custody.
You will own the strategy behind account abstraction, signing, and session management at scale, and evolve our smart account and permissioning model to meet both product and compliance needs. You operate with significant autonomy, but your decisions ripple across teams — so you'll spend real time building buy-in with engineering, product, security, and legal stakeholders, not just designing in isolation.
You are technically deep, calm under pressure, and comfortable being the escalation point when production wallet issues get hard — because in this domain, "hard" means a stuck user operation, a drained paymaster, or a signing prompt a player didn't understand. You write the RFCs and design docs that people actually read, and you create leverage for the broader engineering org through documentation, tooling, and mentorship — without needing a management title to do it.
Responsibilities
Own Smart Wallet & AA Architecture
— Own the technical strategy and architecture of our smart wallet platform, covering the account model, signing, session management, and gas abstraction at scale.
Design the Account & Signing Model
— Design and evolve our ERC-4337 user operation lifecycle (prepare → sign → submit → confirm), EIP-7702 delegation, deterministic address derivation from identity, and the session-key and permission primitives that let players act without a prompt on every transaction.
Own Gas Abstraction
— Set the paymaster and gas-sponsorship strategy: what we sponsor, how we meter and cap it, how we defend it from abuse, and how it degrades when sponsorship is unavailable.
Harden the dApp-Facing Surface
— Own the security model where our signer meets third-party applications: EIP-1193 / EIP-6963 provider behavior, origin-bound and policy-versioned sessions, trust tiers, and the transaction and signature confirmation flow. Define what a player is actually approving, and make sure the UI can prove it.
Drive Custody & Recovery
— Lead the custody roadmap from today's interim mechanisms toward MPC-based custody, and design recovery paths (passkeys, guardians, social recovery) that a non-crypto-native player can complete without losing assets.
Drive Cross-Team Technical Decisions
— Drive decisions on account architecture, SDK contracts, data modeling, and platform reliability, and build buy-in across the wallet, marketplace, SDK, mobile, and security teams.
De-Risk Proactively
— Identify systemic risks — key management, signature phishing, reorgs and indexer staleness, bundler and RPC dependencies, contract upgrade paths — and lead initiatives to resolve them before they become incidents.
Set Engineering Standards
— Define engineering standards, review critical code, contracts, and designs, and create leverage for the team through documentation, tooling, and mentorship.
Align with Stakeholders
— Collaborate with product, security, legal, and infra teams to align on roadmap and translate business and regulatory needs into well-scoped technical plans.
Own Production Escalations
— Serve as the go-to escalation point for complex production issues in the wallet and account abstraction domain.
What You Bring
Account Abstraction & Smart Wallets
ERC-4337 Depth
— Deep, hands-on understanding of ERC-4337: EntryPoint (v0.6 through v0.8), the UserOperation lifecycle, bundler and paymaster roles, validation rules (ERC-7562), gas estimation and its failure modes, counterfactual deployment, and signature validation for undeployed accounts (ERC-6492).
EIP-7702 & the Post-Pectra Landscape
— Working knowledge of EOA delegation, its interaction with ERC-4337 EntryPoint v0.8, and the trade-offs and risks it introduces (residual key authority, delegation phishing, storage collisions).
Smart Account Implementations
— Experience building on or extending production smart account implementations (Safe, Kernel, Biconomy, Coinbase Smart Wallet, or equivalent), and familiarity with modular account standards (ERC-7579 / ERC-6900).
Session Keys & Delegated Permissions
— Experience designing scoped, time-limited, policy-bound authority: session keys with TTL and contract allowlists, origin binding, permission revocation, and delegated-permission standards (ERC-7710 / ERC-7715).
Signature Schemes & Wallet Interfaces
— Practical command of EIP-712 typed data, ERC-1271 contract signatures, WebAuthn / passkey (P-256) signers, and the wallet-facing standards: EIP-1193, EIP-6963, EIP-5792 batched calls, ERC-7677 paymaster interfaces.
Production Wallet Experience
— Experience designing or operating a production smart wallet or account abstraction system serving real users and real value.
Production Crypto Track Record
Scale in a Major Crypto Organization
— Substantial engineering experience at a large crypto product or protocol organization — for example Coinbase, Kraken, Base, Safe, the Ethereum Foundation, Consensys / MetaMask — or a comparable wallet, exchange, or account-abstraction infrastructure team where wallet correctness and custody were core to the product.
Operational Judgment Under Value at Risk
— You have shipped and operated systems where a bug meant lost funds, and you can talk concretely about the guardrails, reviews, and rollback paths you put in place.
Smart Contracts & EVM
Solidity & EVM Fluency
— Ability to read, review, and write account, paymaster, and module contracts; gas-aware design; upgradeability and migration patterns; working effectively with external auditors.
L2 Specifics
— Understanding of L2 execution differences and how they affect wallet design: native account abstraction on zkSync-family chains, transaction and fee models, finality and reorg behavior, and RPC and indexer semantics.
Backend Engineering
Go Engineering
— Strong Go (Golang) engineering skills: idiomatic code, concurrency patterns, performance profiling.
TypeScript & SDK Design
— Ability to design and own client-side SDK surfaces in TypeScript that other engineering teams — internal and external — build on top of.
Distributed Systems
— Experience with distributed systems and their trade-offs (consistency, availability, failure modes), and with reconciling off-chain state against an authoritative on-chain result.
Data & Infrastructure
PostgreSQL
— Schema design, query optimization, migrations at scale.
Kubernetes
— Deploying, operating, and debugging services in a k8s environment.
Message Streaming
— Kafka or NATS — event-driven patterns, consumer groups, at-least-once delivery.
Git & CI/CD
— Git and modern CI/CD practices.
Security
Key Management
— Hands-on experience with key material in production: platform secure storage (Keychain / Keystore), HSMs, MPC or threshold signing, and the operational discipline around each.
Wallet Threat Modeling
— Solid grasp of the wallet attack surface: signature and delegation phishing, malicious dApp origins, replay and cross-chain replay, token approval abuse, and paymaster griefing and DoS.
Leadership
Cross-Team Initiative Leadership
— Proven ability to lead multi-quarter technical initiatives across teams.
Architectural Influence
— Track record of influencing architecture and standards beyond your immediate team.
Written & Verbal Communication
— You write RFCs and design docs that people actually read.
Nice to Have
Experience working in the video game industry, building or operating platforms for game developers, publishers, or players
Hands-on experience with the zkSync / Elastic Chain ecosystem (ZKsync OS, Matter Labs stack, native AA and paymaster flows, custom L2 operations)
Experience with embedded and ecosystem wallet providers or AA infrastructure vendors (thirdweb, Privy, Dynamic, Turnkey, Pimlico, Alchemy, Biconomy, ZeroDev, Safe{Core}) — and clear views on where to build versus buy
Experience with MPC / threshold custody, social recovery, or guardian-based recovery in a consumer product
Experience with NFT and token infrastructure at scale: ERC-721 / ERC-1155 / ERC-20 mechanics, marketplace contracts, Merkle-based airdrop and claim distribution, chain indexing services
Contributions to open-source wallet, security, or identity projects — including authorship or review of ERC / EIP standards
Familiarity with compliance requirements relevant to crypto consumer products: KYC / AML, geofencing, MiCA, SOC 2, ISO 27001, GDPR data minimization, audit logging
Experience with identity and auth integration for wallet derivation (OAuth 2.0 / OIDC, JWT verification, token scoping)
Background in platform or infrastructure engineering — building systems other engineers build on top of
Experience owning a mobile wallet surface (React Native / Expo, WebView provider injection, native signing UI)
Hands-on, up-to-date experience with modern AI tools (e.g. Claude, Copilot, Cursor) for code generation, review, and accelerating day-to-day engineering work
How We Work
Xsolla operates across multiple time zones, and the smart wallet underpins identity, ownership, and value transfer for every Web3 product we ship. Strong written communication is essential — your architectural decisions and designs need to stand on their own and be actionable without you in the room.
We value directness, technical depth, and follow-through. In this domain that means saying plainly when a design has custody, security, or reversibility implications, defending your position with evidence, and staying engaged until it's resolved. Where a decision touches player funds or key material, we expect the conservative call to be argued for explicitly rather than assumed.
Benefits
We are passionate about fostering a supportive environment for our team, so we prioritize the physical, mental, and emotional well-being of our employees and their families through a comprehensive Benefits Program. This includes medical, dental, and vision, PTO, and a personalized career roadmap for each employee. By investing in professional development through training and educational opportunities, we ensure that our team thrives both personally and professionally. Together, we’re not just building a business; we’re cultivating a community that values creativity, collaboration, and the transformative power of play.
Location: IN - Jaipur
About the Role
iCapital is seeking an Assistant Vice President, Internal Controls Readiness, to support the Enterprise Risk Management program. This individual will provide hands-on support to the audit team throughout the audit lifecycle, ensuring that evidence, testing, documentation and follow-up activities are completed accurately and on schedule. The individual will demonstrate the ability to independently apply the department’s audit methodology. They will participate in all phases of the audit from planning to reporting, including understanding business operations, scoping the audit, identifying risks and controls, designing and executing testing with minimal oversight and assisting with the writing of audit reports This position will collaborate with senior leadership and cross-functional teams to drive audit excellence and a strong control environment.
The Individual: The ideal candidate will excel in navigating a complex stakeholder landscape while managing concurrent tactical and strategic initiatives. They will possess the ability to perform assessments of IT General Controls and prepare appropriate working papers, including gathering information around understanding the IT environmental and requesting data to support these activities and assist in the Third-Party Vendor audit reports reviews. This individual will maintain a proactive and logical approach to information gathering and present complex ideas through clear communications.
Responsibilities
Control Library: Maintain a Control Library aligned with the Risk Register with relevant control attributes.
Control Design: Design and implement tests to assess the effectiveness of internal controls and compliance with regulatory standards.
Control Testing: Perform control testing across financial, operational, and IT domains, including walkthroughs, re-performance, inspection, and observation techniques.
Control Findings: Review and evaluate evidence to identify control deficiencies and recommend remediation strategies.
Control Management: Collaborate with cross-functional teams to address audit findings and implement corrective actions.
Third Party Review: Perform vendor risk assessments and review third-party control reports from an IT risk standpoint.
GRC Tool: Support the development and enhancement of reporting tools and dashboards
Issue Tracking: Develop and implement mechanisms for issue, complaint, and incident reporting to identify errors and remediate root causes.
Compliance: Ensure compliance with regulatory requirements and industry best practices related to audit.
Qualifications
Education: Bachelor’s degree in Information Technology, Computer Science, Accounting, Finance, Cybersecurity, Internal Audit or related discipline.
Experience
: 6+ years of experience
in IT audit, internal audit, IT risk, compliance or information security.
Presence: Strong work ethic, resourceful disposition, and solutions-oriented mindset with interpersonal skills that enhance partner capacity.
Attributes: Adaptable and entrepreneurial; a willingness to roll up sleeves and get stuff done.
Skill: Exceptional organizational, time management, and written and verbal communication skills. Proficiency in audit management software (e.g., ACL, IDEA) and Microsoft Office Suite
Knowledge: Strong understanding of audit and control frameworks, operational risk assessment methodologies, and industry regulatory compliance requirements.
Experience: Experience with IT General Controls with regards to Logical Access, Change Management, IT Operations testing.
We believe the best ideas and innovation happen when we are together. Employees in this role will work in the office four days, with the flexibility to work remotely one day (Friday).
Benefits
iCapital offers a comprehensive benefits package that includes a total compensation program consisting of competitive salary, annual performance bonus, and equity for all full-time employees; healthcare with 100% employer-paid health and dental insurance; and generous paid time off (PTO).
For additional information on iCapital Network, please visit
https://www.icapitalnetwork.com/about-us
Twitter: @icapitalnetwork | LinkedIn:
https://www.linkedin.com/company/icapital-network-inc
Location: Ukraine; Poland; Spain; Portugal; Romania; Georgia
At SPD Technology, we bring together a team of like-minded people who are driven by the desire to bring value through their work, united in their commitment to high performance and delivering custom, cutting-edge tech solutions that drive clients' growth. We empower our people with a culture of excellence, and enable them with the opportunity to uphold their accountability to contribute on each level. We value humanity and collaboration, encourage professional and personal growth, and foster a supportive and flexible work environment where everyone's contribution is welcomed.
We are looking for
Senior Payments Processing Engineer
to join us as part of our team
About the role
As a
Senior Payments Processing Engineer
you will join a product team building payment infrastructure for merchants and partner platforms. The platform enables businesses to accept payments, manage payouts, process card and bank transactions, and handle payment-related operations without relying on multiple disconnected providers.
The engineering challenges go far beyond basic payment integrations. The platform handles payment orchestration, transaction processing, settlement and reconciliation, payouts, fraud and KYC integrations, and complex failure scenarios across systems that the team does not fully control.
This role is a strong fit for an engineer who understands how money actually moves through payment systems and is comfortable owning critical backend flows end to end.
Tech Stack
TypeScript across the board, in a pnpm monorepo
NestJS backend services; Next.js and React on the front end
PostgreSQL, with SQL-first data modeling and versioned migrations
Event-driven service orchestration, webhooks, and idempotent processing
Acquirer and vendor integrations for card/ACH acceptance, fraud screening, payouts, and KYC
Managed cloud infrastructure, containerized services, CI/CD on GitHub
AI-assisted development as a standard part of the toolchain, not a side experiment
Work environment
Full-time, remote. Daily collaboration with a US-based team (4–6 hours of overlap with US Central Time is required)
As a qualified expert You will
Own end-to-end payment flows in TypeScript/NestJS services: authorization, capture, void, refund, dispute handling, and payout initiation and confirmation.
Build and maintain acquirer and processor integrations, keeping the platform acquirer-agnostic behind clean internal abstractions.
Design embedded and hosted checkout experiences (hosted fields, iframes, tokenization) that keep sensitive cardholder and bank data out of internal systems and minimize PCI scope.
Implement fee calculation and rate logic, including tiers, interchange-plus, flat structures, rounding rules, special rates, and edge cases.
Build the reconciliation and settlement layer to match processor reports and settlement files against internal records and surface breaks.
Design event handling incorporating idempotency keys, out-of-order and duplicate webhooks, retries with backoff, and state machines.
Integrate fraud, bank-account verification, and KYC providers, tuning decisioning against real outcomes.
Handle ACH mechanics including submission windows, returns, return codes, NOCs, and retry rules.
Ensure correctness in the domain, maintaining complete audit trails and producing reconciliation evidence.
Act as the team's payments expert, advising product on rail capabilities and reviewing payment-adjacent code.
What Success Looks Like
First 30 days — you can trace any transaction through the platform end to end, and you have documented the gaps and risks you see in current flows.
First 90 days — you own a critical payment domain including its specs, tests, and reconciliation checks, and you have shipped a meaningful improvement to reliability or correctness.
First 6 months — payment orchestration in your area is provably correct and observable, adding a new processor or payout rail is a well-understood exercise rather than an adventure, and you are the person the team and the business rely on for payments judgment.
We're looking for you if you have
6+ years building production software
, with at least
3 years hands-on in payments
, and direct ownership of live payment flows.
Concrete experience
integrating a payment processor, gateway, or acquirer
(Adyen, Stripe, Braintree, Worldpay, Checkout.com, Fiserv, or similar) beyond a starter integration — including webhooks, reporting, and edge-case handling.
Practical understanding of the card lifecycle (auth, capture, settlement, refund, chargeback, representment) and of ACH/bank rails (NACHA basics, returns, timing).
Working knowledge of
PCI DSS
obligations and of the architectural patterns that reduce scope: tokenization, hosted fields, iframe isolation, and data-flow segregation.
Strong
TypeScript/Node.js
skills and solid relational data modeling — you can design a schema whose invariants make an inconsistent ledger structurally difficult.
A rigorous approach to reconciliation and idempotency, informed by having been on the hook when something didn't balance.
Fluency with modern AI-assisted development tooling, paired with the discipline to verify — in payments, plausible-looking code that is subtly wrong is the expensive kind.
Strong English communication skills
and confidence working directly with a US-based team.
Ability to work with
4–6 hours of daily overlap with US Central Time
.
Bonus points
Experience with platform, marketplace, or facilitator models (split payments, sub-merchant onboarding, multi-party flows).
Experience with payouts and disbursement rails, including bank-account collection, verification, and payout status handling.
Experience with fraud and risk tooling, and bank-account validation services.
Experience with e-commerce plugin or SDK development (WooCommerce, Shopify, Magento).
Knowledge of multi-currency, cross-border, or alternative payment methods.
Experience with event sourcing applied to financial state, and double-entry ledger design.
What's in it for You
Reveal great tech solutions
Join the team of experts who create custom, cutting-edge tech solutions for world-renowned businesses, fueling clients growth. Unleash your potential, tackle new challenges, and be part of a team that values your skills and contributions. Focus on long-term impact and building tailored, long-lasting partnerships with our clients.
Experience an agile and flexible working environment
Work fully remote around the globe, or in a hybrid work model from our office hubs which are equipped with everything needed for comfortable work. Enjoy a flexible working schedule and create work and rest balance for yourself. Empower yourself with a stable workload and a stable income, focusing on lasting cooperation and high-performance culture.
Embrace the opportunity for personal and professional growth
Take advantage of performance review and career path. Elevate your skills with mentorship program, personal development plan, and individual learnings through the corporate library, public speaking support, and more.
Feel cared about
Be among like-minded people and feel supported with collaboration, open communication and mutual respect. Join company-wide tech and cultural events, and contribute to meaningful CSR initiatives that resonate with your values.
Interview steps
Interview with Recruiter
Technical Interview
Client Interview.
Location: Argentina; Mexico; Colombia; Uruguay; Honduras
We are seeking an experienced
Project BIM Lead
to set up and manage Revit models for building engineering projects, providing the technical foundation designers and engineers need to develop building systems efficiently.
You will work closely with our BIM Department Manager while independently supporting multiple project teams. This position centers on
Revit model setup, ongoing model management, and technical support
, with building systems design experience considered a plus.
Key Responsibilities
Set up initial Revit models for designers and engineers to begin design and building systems layouts.
Configure project templates, linked models, coordinates, levels, grids, worksets, views, and sheets according to project requirements.
Manage and maintain Revit models throughout the project lifecycle, ensuring consistent organization and reliable performance.
Support project teams with Revit troubleshooting, model maintenance, and best practices.
Manage worksharing workflows and coordinate updates to linked architectural, structural, and MEP models.
Collaborate with the BIM Department Manager to apply company BIM standards and establish project-specific workflows.
Review model health and resolve issues that affect team productivity or model usability.
Independently prioritize BIM support needs across multiple projects and deadlines.
Identify opportunities to improve model setup, documentation workflows, and team efficiency.
Requirements
Extensive experience using Autodesk Revit, ideally
8 or more years
.
Advanced knowledge of Revit project setup, model management, worksharing, and troubleshooting.
Demonstrated experience preparing and maintaining models used by multidisciplinary design or engineering teams.
Strong understanding of linked models, shared coordinates, worksets, templates, and view management.
Ability to work independently while collaborating closely with a BIM manager and project teams.
Strong organizational, communication, and problem-solving skills.
Attention to detail and the ability to manage competing project priorities.
Preferred Qualifications
Proficiency in AutoCAD.
Experience supporting mechanical, electrical, and plumbing engineering teams.
Building systems design experience.
Familiarity with Autodesk Construction Cloud or BIM 360.
Autodesk Revit certification.
Benefits
Work for the most exciting companies in the North American Market.
Flexible schedules.
Work from anywhere.
Highly competitive compensation.
Location: Costa Mesa, United States
📍
Location:
Costa Mesa, California, USA
📄
Employment Type:
Full-Time
🏢
Work Arrangement:
On-site
🚀
Start Date:
Immediate
💰
Compensation:
TBD -- based on skills and experience
Important Screening Requirements
Must be a
U.S. Citizen
or
U.S. Permanent Resident (Green Card holder)
.
Must be eligible to obtain and maintain a
U.S. Department of Defense (DoD) Secret Security Clearance
.
Candidates should have a strong interest in supporting U.S. defense and national security programs.
About the Role
We are seeking an experienced
Structures Engineer
to support the design, analysis, and development of next-generation
hypersonic air vehicle
platforms. In this role, you will develop lightweight, high-performance structural systems capable of operating in extreme environments, perform structural and thermal analyses, and collaborate with multidisciplinary engineering teams throughout the product development lifecycle. The ideal candidate has expertise in aerospace structures, composite materials, high-temperature design, and advanced aircraft development.
Key Responsibilities
Design and develop structural components and assemblies for hypersonic air vehicle platforms.
Perform structural analyses, engineering calculations, and design evaluations to ensure structural integrity and performance.
Design lightweight, structurally efficient assemblies for high-speed and high-temperature operating environments.
Support the fabrication, integration, testing, and validation of structural components.
Evaluate structural performance under thermal gradients and extreme operating conditions.
Collaborate with multidisciplinary engineering teams throughout the design, manufacturing, and testing lifecycle.
Participate in design reviews, technical trade studies, and engineering decision-making.
Prepare engineering documentation, technical reports, and design analyses.
Support prototype development and continuous product improvement.
Required Qualifications
Bachelor's degree in
Aerospace Engineering
,
Mechanical Engineering
, or an equivalent engineering discipline.
5+ years
of experience in the aerospace or related industry.
Strong technical knowledge of:
Structural engineering principles
Composite materials
Structural design, analysis, testing, and fabrication
Deep understanding of load paths, structural design practices, and engineering hand calculations.
Proven experience designing high-performance aerospace structures and supporting their fabrication.
Self-motivated with the ability to thrive in a fast-paced, collaborative environment.
Excellent communication, organizational, and problem-solving skills.
Preferred Qualifications
Experience with
clean-sheet aircraft
development.
Experience designing structures for
high-speed or hypersonic
platforms.
Experience with
high-temperature materials
and material selection.
Experience performing
thermal gradient structural analysis
.
Proficiency with
Siemens NX
.
Experience designing and manufacturing prototype
uncrewed aircraft systems (UAS)
.
Hands-on manufacturing or fabrication experience.
Practical aviation experience (e.g., pilot's license, A&P certification, or equivalent).
Location: Costa Mesa, United States
📍
Location:
Costa Mesa, California, USA
📄
Employment Type:
Full-Time
🏢
Work Arrangement:
On-site
🚀
Start Date:
Immediate
💰
Compensation:
TBD -- based on skills and experience
Important Screening Requirements
Must be a
U.S. Citizen
or
U.S. Permanent Resident (Green Card holder)
.
Must be eligible to obtain and maintain an
active U.S. Secret Security Clearance
.
Candidates should have a strong interest in supporting advanced defense and national security programs.
About the Role
We are seeking an experienced
Structures Engineer
to support the design, analysis, and development of advanced air vehicle platforms. In this role, you will own the full structural development lifecycle—from conceptual design through prototype manufacturing—while designing high-performance primary and secondary aircraft structures. You'll collaborate with multidisciplinary engineering teams to develop lightweight, resilient, and manufacturable aerospace systems that meet demanding performance and mission requirements.
Key Responsibilities
Design and develop primary and secondary aircraft structural components and assemblies using metallic and composite materials.
Perform structural modeling and finite element analysis (FEA) at the component, assembly, and vehicle levels.
Conduct structural analyses, including strength, buckling, fatigue, damage tolerance, and delamination assessments.
Apply Design for Manufacturing (DFM) principles to optimize cost, manufacturability, and performance.
Conduct engineering trade studies to evaluate weight, performance, manufacturability, cost, and schedule.
Collaborate with systems, aerodynamics, manufacturing, integration, and project engineering teams.
Support prototype builds, manufacturing, integration, and testing activities.
Prepare technical documentation, engineering analyses, and design reports.
Required Qualifications
Bachelor's degree in
Aerospace Engineering
,
Mechanical Engineering
, or an equivalent engineering discipline.
5+ years
of experience in aerospace structural design, analysis, or related engineering roles.
Experience with
CAD
software and engineering data analysis tools.
Proficiency with structural analysis software such as
ANSYS
,
NASTRAN
, or equivalent FEA tools.
Strong understanding of:
Structural mechanics
Composite materials
Structural design and analysis
Stress analysis
Fatigue assessment
Load path development
Structural testing and fabrication
Strong engineering fundamentals and analytical problem-solving skills.
Excellent written and verbal communication skills.
Ability to thrive in a fast-paced, collaborative engineering environment.
Must be eligible to obtain and maintain an
active U.S. Secret Security Clearance
.
Preferred Qualifications
Experience with
clean-sheet aircraft development
.
Proficiency with
Siemens NX
.
Experience developing and manufacturing prototype
uncrewed aircraft systems (UAS)
.
Experience selecting and applying
high-temperature materials
.
Broad experience across multiple aircraft development programs.
Hands-on manufacturing or fabrication experience.
Practical aviation experience (e.g., pilot's license, A&P certification, or equivalent).
Location: Costa Mesa, United States
📍
Location:
Costa Mesa, CA
📄
Employment Type:
6-Month Contract, with potential for conversion to full-time
🏢
Work Arrangement:
100% On-site, Monday–Friday
🚀
Start Date:
TBD
💰
Compensation:
TBD — based on skills and experience
Important Screening Requirements
Must be
authorized to work in the United States
.
Must be a
U.S. Citizen
and eligible to obtain and maintain an active
U.S. Secret Security Clearance
.
Experience supporting
aerospace, defense, or advanced aircraft development programs
is highly preferred.
Must be willing and able to work
on-site in Costa Mesa, CA, Monday–Friday
.
Candidates outside Southern California must be willing to
relocate
and commit to the full-time on-site schedule.
The team may potentially transition operations to the
Long Beach, CA area
in approximately one year.
About the Role
We are seeking a skilled
Stress Analyst – Aircraft Structures
to support the structural analysis of advanced aerospace vehicles and components.
This is a hands-on structural analysis role focused on evaluating aircraft structures for
strength, stability, fatigue, damage tolerance, and other structural performance requirements
. The ideal candidate has strong experience with
FEMAP and NASTRAN
, understands both finite element and first-principles methods, and can independently take an analysis from applied loads through finite element modeling, margins of safety, and technical reporting.
You will work closely with multidisciplinary engineering and manufacturing teams in a fast-paced aerospace development environment.
What We’re Looking For
We’re looking for a hands-on structural analyst who can independently own analyses from
loads and assumptions through FEA, results interpretation, margins, and reporting
. Strong experience with FEMAP and NASTRAN, combined with practical knowledge of aircraft structural mechanics and the ability to perform first-principles calculations, is essential.
Experience with both metallic and composite structures, advanced aerospace vehicles, rapid prototyping, and manufacturing/integration environments will be particularly valuable.
Key Responsibilities
Perform structural analysis at the
component, assembly, and aircraft levels
.
Develop and evaluate finite element models using
FEMAP and NASTRAN
.
Analyze structures for:
Strength
Buckling
Fatigue
Damage tolerance
Other applicable failure modes
Evaluate load paths and structural response using both
finite element methods and first-principles engineering calculations
.
Perform hand calculations to validate and supplement FEA.
Analyze both
metallic and composite aerospace structures
.
Evaluate composite structures for relevant failure modes, including delamination where applicable.
Review structural loads, boundary conditions, material properties, and modeling assumptions.
Develop, modify, and review
NASTRAN input decks and solver cards
.
Interpret FEA results and calculate
margins of safety
and other structural performance metrics.
Prepare clear technical documentation and analysis reports.
Collaborate with engineering, manufacturing, integration, and other technical teams to resolve structural issues.
Support prototype development, testing, manufacturing, and integration activities as needed.
Communicate analysis assumptions, findings, risks, and recommendations to technical stakeholders.
Required Qualifications
Bachelor's degree in
Aerospace Engineering, Mechanical Engineering, or a related engineering discipline
, or equivalent relevant experience.
4+ years
of relevant experience in aerospace structural analysis, stress analysis, or a closely related field.
Hands-on
FEMAP
experience is required.
Experience with
NASTRAN
or a comparable structural finite element solver.
Strong preference for candidates with direct experience working with
NASTRAN input decks and cards
.
Strong understanding of
aircraft structural mechanics and stress analysis
.
Experience with structural strength, buckling, fatigue, damage tolerance, load paths, and/or related structural analysis methods.
Experience analyzing
metallic and/or composite aerospace structures
.
Strong understanding of material properties and structural behavior.
Ability to perform engineering hand calculations and apply
first-principles methods
.
Experience taking an analysis from
applied loads → finite element modeling → results interpretation → margins → technical reporting
.
Strong technical communication and problem-solving skills.
Ability to work independently in a fast-paced engineering environment.
Preferred Qualifications
Experience with both
metallic and composite aerospace structures
.
Experience with
composite laminate analysis and delamination assessment
.
Experience with
high-temperature materials or structures
.
Experience supporting
hypersonic or other high-performance aerospace systems
.
Experience with
clean-sheet aircraft development
.
Experience working on
uncrewed aircraft or other advanced aerospace vehicles
.
Experience in rapid prototype development and manufacturing environments.
Siemens NX
proficiency.
Hands-on manufacturing or integration experience.
Broad experience across multiple aircraft programs.
Practical aircraft knowledge or experience working directly with aircraft systems and structures.
Work Environment
This is a
fully on-site engineering position in Costa Mesa, California, Monday through Friday
. The role involves close collaboration with engineering, manufacturing, and integration teams and may include support for prototype manufacturing and vehicle integration activities.
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