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Location: Home Based - APAC; Home based - EMEA Canonical is a leading provider of open source software and operating systems to the global enterprise and technology markets. Our platform, Ubuntu, is very widely used in breakthrough enterprise initiatives such as public cloud, data science, AI, engineering innovation, and IoT. Our customers include the world's leading public cloud and silicon providers, and industry leaders in many sectors. The company is a pioneer of global distributed collaboration, with 1200+ colleagues in 75+ countries and very few office-based roles. Teams meet two to four times yearly in person, in interesting locations around the world, to align on strategy and execution. The company is founder-led, profitable, and growing. We are hiring a C++/Rust Graphics and Windowing System Software Engineer. We build Mir – a high-performance, high-efficiency technology stack for window managers, display subsystems and solutions built on top of it, like Ubuntu Frame. Leading with vision, we shape the technology stack that empowers communities to realize a world where apps work seamlessly in every graphical environment. Our goal is to enable the whole spectrum of graphics from single-purpose screens through edge devices to full desktop environments. We also set the pace for graphics enablement across the Ubuntu certified hardware ecosystem. Our daily drill includes design, development and testing of features as well as working with the community and responding to issues and user inquiries. Most of the software is written in C++, with support tooling in scripting languages. We will use Rust as an evolutionary step forward. Thus candidates are required to have strong skills in both Rust and C++. We're growing the team and looking for new colleagues who share our passion for precision, performance and user experience. We are hiring on various career levels with a minimum of 2 years industry experience. We are looking for people who ideally have experience in building window compositing systems or graphics device experience. We're committed to creating an outstanding developer experience, secure foundations, and easy access to today's most used graphics toolkits and libraries. This is an excellent opportunity for someone who wants to have a meaningful impact on modern display technologies that will impact millions of developers and users. Canonical offers a fast-paced team environment and a career full of learning and development opportunities across the open source spectrum. Location: This role will be based remotely in the EMEA or APAC region. The role entails Design and implementation of features across the Mir stack Assisting in debugging, tracking down and fixing issues Participating in our engineering process through code and architectural review Creating and improving tests and performance benchmarks to catch issues early Creating and maintaining documentation to enhance the developer experience Engaging with the open source community and commercial partners Collaborating proactively with a distributed team What we are looking for in you Excellent Bachelor’s or equivalent degree in Computer Science, STEM or similar and 2+ years of working experience Excellent modern C++ and excellent Rust programming skills Familiarity with Linux as a development and deployment platform Ability to collaborate remotely with a diverse set of team members and remain highly motivated, productive, and organized Ability to travel internationally twice a year for company events up to two weeks long Nice-to-have skills You have experience with the Wayland protocol ecosystem and compositors You are familiar with OpenGL, Vulkan, Flutter and other graphics, toolkits and animation frameworks You have a solid understanding of asynchronous programming and concurrency patterns You have proven ability to consistently deliver robust code to production You have strong written and verbal communication skills to document and present software developed What we offer colleagues We consider geographical location, experience, and performance in shaping compensation worldwide. We revisit compensation annually (and more often for graduates and associates) to ensure we recognize outstanding performance. In addition to base pay, we offer a performance-driven annual bonus or commission. We provide all team members with additional benefits which reflect our values and ideals. We balance our programs to meet local needs and ensure fairness globally. Distributed work environment with twice-yearly team sprints in person Personal learning and development budget of USD 2,000 per year Annual compensation review Recognition rewards Annual holiday leave Maternity and paternity leave Team Member Assistance Program & Wellness Platform Opportunity to travel to new locations to meet colleagues Priority Pass and travel upgrades for long-haul company events About Canonical Canonical is a pioneering tech firm at the forefront of the global move to open source. As the company that publishes Ubuntu, one of the most important open-source projects and the platform for AI, IoT, and the cloud, we are changing the world of software. We recruit on a global basis and set a very high standard for people joining the company. We expect excellence; in order to succeed, we need to be the best at what we do. Most colleagues at Canonical have worked from home since our inception in 2004.​ Working here is a step into the future and will challenge you to think differently, work smarter, learn new skills, and raise your game. Canonical is an equal opportunity employer We are proud to foster a workplace free from discrimination. Diversity of experience, perspectives, and background create a better work environment and better products. Whatever your identity, we will give your application fair consideration. #LI-Remote #Linux #Graphics #OpenSource #Canonical #Mir #Rust #C++

Location: New York, NY / Seattle, WA / San Francisco Bay Area, CA / Remote Workplace: remote Why us?  Blockchain technology is enabling a rapidly-growing era of innovation for the digital world. It is crucial that blockchain code such as protocols and smart contracts are provably secure and correct. Once deployed, they are public and cannot be changed. Vulnerabilities and bugs in such programs regularly put millions of dollars at stake. This is where CertiK comes in. We are the leading blockchain security company. Our goal is to secure the cyber world by applying cutting edge techniques from academia to secure blockchain code. Come and join this ambitious mission as a research software engineer to work on automated analyses for provably secure and correct blockchain applications!  What you will do You will design and develop tools that automatically ensure the correctness of smart contracts or identify security issues and bugs in smart contracts. We have software engineer positions available at all levels of seniority. Title and responsibilities will be commensurate with experience and background. As part of our multinational team of programming language experts, you will participate in the development of tools that rest upon techniques such as symbolic model checking, SAT/SMT solving, abstract interpretation, data flow analysis, and deductive verification. You will have the opportunity to work on all stages of tool development from idea generation to implementation and iterative improvements. Our team is highly supportive and collaborative with great opportunities to learn and grow. About you You have a background in programming language theory and automated reasoning and love to work on the forefront of applying results from theoretical computer science. You love to tackle computationally hard problems and have a proven track record of achieving results, where results are people using your tool to do their jobs. You are collaborative: you share ideas, love to brainstorm with peers, and give and receive feedback. You are comfortable with the unknown and understand that #startuplife means that you will be wearing multiple hats. Responsibilities Extend the scope and depth of our automated program verification tools and brainstorm, design, and implement new tools. Adapt and improve algorithms for symbolic software model checking. Examples include bounded model checking (BMC), counterexample-guided abstraction refinement (CEGAR), and property directed reachability (IC3/PDR). Build and extend translators from different input languages into intermediate representations, optimizing the generated models for automated analysis. Identify new classes of security properties of smart contracts and formalize properties for use in our automated verification tools. Closely collaborate with other software engineers in developing tools and set technical direction for solving problems in consultation with your team and management. Work on all aspects of delivering working software that meets customer needs, including analysis, design, automated testing, operations, CI/CD, measuring results, incorporating customer feedback, and support. Required Qualifications Master's Degree in Computer Science or a related field or 5 years of equivalent experience. Minimum of 4 years of software development experience (includes internships, software developed during research, and open-source development). Minimum of 2 years of experience with one or more of the following: model checking, formal verification, SAT/SMT solving (Z3, CVC4, Yices, MathSAT, SMTInterpol), abstract interpretation, or closely related disciplines. Demonstrated knowledge of fundamental computer science concepts such as data structures, algorithms, mathematical logic, and automata theory. Preferred Qualifications PhD in the broader field of automated reasoning. Publication record in conferences like POPL, CAV, TACAS, FMCAD, FM, etc. Experience in functional programming (OCaml or Haskell). Strong and creative problem-solving skills; always willing to learn and embrace new technologies and to collaborate. Prior experience in a professional software development environment. About the Company Founded in 2018 by professors of Yale University and Columbia University, CertiK is a pioneer in blockchain security, utilizing best-in-class technology to secure and monitor blockchain protocols and smart contracts. CertiK’s mission is to secure the cyber world. Starting with blockchain, CertiK applies cutting-edge innovations from academia into enterprise, enabling mission-critical applications to be built with security and correctness.  Compensation Target annual base salary for this role performed in the US is $115,000 - $230,000. The exact compensation at which this job is filled will be determined by the skills and experience of qualified candidates. #LI-Remote #blockchain #startups #hiring CertiK is proud to offer medical, vision, and dental insurance, 401(k) plan with company matching, life and accidental death and dismemberment insurance, HSA (with high deductible plan), FSA, and other benefits to all full-time employees, along with flexible paid time off and holidays. CertiK also offers a variable commission program for business development sales roles.   In compliance with federal law, all persons hired will be required to verify identity and eligibility to work in the United States and to complete the required employment eligibility verification form upon hire.   CertiK is proud to be an equal opportunity employer. We will not discriminate against any applicant or employee on the basis of age, race, color, creed, religion, sex, sexual orientation, gender, gender identity or expression, medical condition, national origin, ancestry, citizenship, marital status or civil partnership/union status, physical or mental disability, pregnancy, childbirth, genetic information, military and veteran status, or any other basis prohibited by applicable federal, state or local law.   CertiK will consider for employment qualified applicants with criminal histories in a manner consistent with local and federal requirements. https://www.eeoc.gov/sites/default/files/migrated_files/employers/poster_screen_reader_optimized.pdf   All CertiK employees are expected to actively support diversity on their teams, and in the Company.

Location: Home Based - Americas; Home based - EMEA Canonical is a leading provider of open source software and operating systems to the global enterprise and technology markets. Our platform, Ubuntu, is very widely used in breakthrough enterprise initiatives such as public cloud, data science, AI, engineering innovation, and IoT. Our customers include the world's leading public cloud and silicon providers, and industry leaders in many sectors. The company is a pioneer of global distributed collaboration, with 1200+ colleagues in 75+ countries and very few office-based roles. Teams meet two to four times yearly in person, in interesting locations around the world, to align on strategy and execution. The company is founder-led, profitable, and growing. We are hiring a Staff-level Software Engineer for Identity Management to work on authorization and access management across Canonical's suite of enterprise products and web services, using Go (Golang) and Python. As a software engineer for Identity Management products of Canonical, you will modernize and expand the capabilities of the identity management solutions we use for authentication and authorization in our products, as well as our canonical.com and ubuntu.com websites. Your work on Identity Management will directly impact the users of all Canonical products. In addition, you will help write Juju charms to manage operational concerns. Technical excellence and a background in software engineering are necessary prerequisites for this role. You will be expected to own the design and delivery of the system, facilitate integrations and work with your team on strategy and execution. Location: This role will be based remotely in the EMEA and AMER regions. The role entails Collaborate proactively with a distributed team, leading technical efforts and discussions Write clean web service APIs to support both CLI and web frontend clients, using Go (Golang) and Python Design and implement new features and enhancements from spec to production and ongoing operations at scale Review code produced by other engineers, helping set quality standards Discuss ideas and collaborate on finding good solutions Create and enhance management, authentication and authorization API endpoints Craft end-user authentication flows from design to implementation Write Juju charms (operators) to manage operational concerns Modernize the identity stack of our websites and products by driving adoption of best-of-breed IAM technologies Deliver great products that users love by maintaining a culture of quality and engineering excellence Work from home with global travel 2 to 4 weeks per year for internal and external events What we are looking for in you You are a staff-level or experienced senior software engineer, with specific experience building identity and access management products You are familiar with the open source software, standards, protocols and concepts in the identity space (e.g. OpenID, OAuth, LDAP) You have experience implementing authorization frameworks in distributed systems You value secure coding and standards, and enjoy working on teams that do the same You are comfortable with Ubuntu as a development and deployment platform In addition: Exceptional academic track record from both high school and university Undergraduate degree in a technical subject or a compelling narrative about your alternative chosen path Professional written and spoken English with excellent presentation skills Excellent interpersonal skills, curiosity, flexibility, and accountability Ability to travel internationally twice a year for company events up to two weeks long What we offer colleagues We consider geographical location, experience, and performance in shaping compensation worldwide. We revisit compensation annually (and more often for graduates and associates) to ensure we recognize outstanding performance. In addition to base pay, we offer a performance-driven annual bonus or commission. We provide all team members with additional benefits which reflect our values and ideals. We balance our programs to meet local needs and ensure fairness globally. Distributed work environment with twice-yearly team conferences in person Personal learning and development budget of USD 2,000 per year Annual compensation review Recognition rewards Annual holiday leave Maternity and paternity leave Team Member Assistance Program & Wellness Platform Opportunity to travel to new locations to meet colleagues Priority Pass and travel upgrades for long-haul company events About Canonical Canonical is a pioneering tech firm at the forefront of the global move to open source. As the company that publishes Ubuntu, one of the most important open-source projects and the platform for AI, IoT, and the cloud, we are changing the world of software. We recruit on a global basis and set a very high standard for people joining the company. We expect excellence; in order to succeed, we need to be the best at what we do. Most colleagues at Canonical have worked from home since our inception in 2004.​ Working here is a step into the future and will challenge you to think differently, work smarter, learn new skills, and raise your game. Canonical is an equal opportunity employer We are proud to foster a workplace free from discrimination. Diversity of experience, perspectives, and background create a better work environment and better products. Whatever your identity, we will give your application fair consideration. #LI-remote

Location: Singapore This is a part-time, remote, freelance role with the flexibility to decide your business hours. Candidate does not have to based in any specific location as the role is remote. This role is a great opportunity to supplement your current job or private practice. You will be a practitioner on our telehealth platform 'Intellect', where your role is to support our clients' mental health and personal growth based on the individual needs and goals. There are 4 roles that focus on different types of 1-on-1 sessions: 1. Network Psychiatrist Network Psychiatrist will assist Intellect in providing psychiatric consultations (online and/or in person) wherein we will refer clients over to the network partner. As a member of our psychiatry network, the network psychiatrist will conduct appropriate clinical care within local regulations as well as necessary reporting and documentation. We will refer clients who require clinical care over to our network psychiatrist. The psychiatrist will then schedule an initial consultation within 2 weeks of the referral and share with Intellect the expected treatment plan going forward. Network psychiatrist will thereafter be responsible for the continued treatment of the client, and will be required to provide periodic updates on the progress of the client thereafter. Our network psychiatrists are required to have the following credentials: Master Degree in Medicine (M. Med(Psychiatry) or equivalent qualification required to practice psychiatry Licensed/ Board certified to practice, prescribe and/or dispense medication in their respective countries based on the in-country requirements and regulations Minimum 3 years of experience in residency Possesses good record in clinical excellence and commitment to medical education Ability to perform age-appropriate assessments on clients Able to interact effectively with clients of diverse educational, socioeconomic and ethnic backgrounds, skill levels and value systems Excellent written and verbal communications, listening, and social skills Compassionate about helping clients and using clinically proven protocols 2. Crisis Helpline Responder Crisis Helpline Responders focus on providing immediate client intervention that are in need of immediate support through a hotline. Our responders are required to have the following background: 2 - 3 years of experience in helplines, either in a paid or voluntary capacity Can effectively communicate in their native language Completed training in Crisis Intervention or Suicide Prevention Experience working with high risk clinical situations (at risk of or affected by suicide or crisis cases) and Has the appropriate insurances required by your country Ability to maintain emotional composure in high stress situations, ability to bounce back from stressful interactions and high-risk cases 3. Behavioral Health Coach As a behavioral health coach you will focus on conducting 1-on-1 30 minute virtual coaching sessions that focus on subclinical cases (lack of motivation, stress, procrastination, etc). Our coaches are required to have the following credentials: Has a Master / Postgraduate Diploma training in Counselling / Clinical Psychology or ICF accreditation Skilled in Cognitive Behavioural Therapy or other evidence-based approaches (e.g. Motivational Interviewing, DBT, SFBT, etc.) Candidate must have accumulated at least 300 hours worth of sessions Candidate must be proficient in other languages other than English Candidates with prior experience in EAP, counselling working adults or coaching managerial roles is a plus 4. Clinical Provider Clinical providers on the other hand focus on clients that are in need of higher touch care. They provide 60 minute clinical online sessions and assist potential clients with cases such as MDD, Phobia, Trauma, etc. Our clinical providers are required to have the following credentials: Has a Master / Postgraduate Diploma training in Clinical Psychology or Counselling Skilled in Cognitive Behavioural Therapy or other evidence-based approaches (e.g. DBT, SFBT, etc.) Candidate must have accumulated at least 300 clinical hours Candidate must be proficient in other languages other than English Candidates with prior experience in EAP, counselling working adults or coaching managerial roles is a plus

Location: Yerevan, Armenia Job description We are looking for our new team member who will join our team as a Network Engineer and will be responsible for mainly campus network infrastructure. Responsibilities: Design and deploy functional networks (LAN, WLAN, WAN) Configure and install routers, switches, firewalls and other network devices Monitor network performance and integrity Resolve issues tiers of support have escalated by troubleshooting cloud and local infrastructure Mentor team members on technical issues Create, oversee and test security measures (e.g. access authentication and disaster recovery) Communicate with users when needed Maintain complete technical documentation Suggest improvements to network performance, capacity and scalability Requirements and skills : Minimum 4 years of hands-on experience in the networking field Solid background in network engineering and architecture In-depth understanding of communication protocols (mainly TCP/IP) and routing protocols (e.g. BGP, OSPF) Familiarity with access control models and network security Good knowledge of wireless technology. Professional certification (e.g. CCNP) is a plus Experience with network diagnostic, monitoring and analysis tools (e.g. Zabbix, Scrutinizer) Experience with Aruba Campus solutions Experience with Cisco, Juniper switches and routers Experience with Arista switches is a plus Experience with FortiGate Firewalls Sharp troubleshooting skills Organizational and mentoring skills Strong knowledge of L2 and L3 loop prevention mechanisms Strong knowledge of SSL and IPSEC VPNs Ability to monitor, lead and give guidance to team members if needed Experience working in a team-oriented, collaborative environment and participate in periodic on-call duties

Location: US / Remote Workplace: remote Why Us? CertiK is a pioneer in blockchain security, leveraging best-in-class AI technology to protect and monitor blockchain protocols and smart contracts. Founded in 2018 by professors from Yale University and Columbia University, CertiK’s mission is to secure the web3 world. CertiK applies cutting-edge innovations from academia to enterprise, enabling mission-critical applications to scale with safety and correctness. About the Role The primary responsibility of this role is for CertiK’s security-related services. Intersecting cybersecurity and blockchain, CertiK’s security offerings include security consulting, security reviews, security auditing of smart contracts and blockchains, verification of smart contracts, penetration testing, and more. We are looking to hire someone with a passion for application security and penetration testing. This is a fun and challenging full-time position. If you are excited about hacking, threat modeling, scanning, auditing, designing, and enhancing the security of applications across the board then you will thrive in this role. While you work with clients, we will also provide you with plenty of opportunities to get involved with research and development efforts to help us raise the standards of blockchain security. Responsibilities Perform security assessments on web, mobile, thick client applications, and browser extensions Conduct external and internal network penetration tests Perform security source code reviews Perform cloud security reviews Develop comprehensive pentest reports for both technical and non-technical audiences Research and develop innovative techniques, tools, and methodologies for pentesting applications in the blockchain space Contribute to the community by developing tools, presentations, and blog posts Requirements Passionate about cryptocurrency, DeFi, and blockchain, with a willingness to learn Web3 technologies such as smart contracts Minimum of 4 years of experience in application security and penetration testing Experienced in source code review for different languages, with a strong understanding of JavaScript and TypeScript Experienced in mobile application penetration testing Familiar with cloud platforms and their security risks, such as AWS, Azure, and GCP Experience in programming with scripting languages such as Python and Bash Solid understanding of cryptography BS/MS/PhD in Computer Science or Information Security Strong spoken and written communication skills Bonus Points Experienced in pentesting Web3 applications such as crypto exchanges, wallets, Dapps, and key custodian solutions Experienced in smart contract security audits Familiar with browser extension architecture and security risks Actively participate in the blockchain security community OSCP, OSWE, OSCE, GWAPT, or comparable certification Participated in bug bounty programs and audit contests Published security-related blog posts and spoken at security conferences and/or local meetups About the Company One of the fastest-growing and most trusted companies in blockchain security, CertiK is a true market leader. To date, CertiK has worked with over 3,200 Enterprise clients, secured over $310 billion worth of digital assets, and has detected over 60,000 vulnerabilities in blockchain code. Our clients include leading projects such as Aave, Polygon, Binance Smart Chain, Terra, Yearn, and Chiliz. Investors = Insight Partners, Sequoia, Tiger Global, Coatue Management, Lightspeed, Advent International, SoftBank, Hillhouse Capital, Goldman Sachs, Coinbase Ventures, Binance, Shunwei Capital, IDG Capital, Wing, Legend Star, Danhua Capital and other investors. Compensation Target annual base salary for this role performed in the US is $100,000 - $180,000. The exact compensation at which this job is filled will be determined by the skills and experience of qualified candidates. #LI-Remote #blockchain #startups #hiring CertiK is proud to offer medical, vision, and dental insurance, 401(k) plan with company matching, life and accidental death and dismemberment insurance, HSA (with high deductible plan), FSA, and other benefits to all full-time employees, along with flexible paid time off and holidays. CertiK also offers a variable commission program for business development sales roles.   In compliance with federal law, all persons hired will be required to verify identity and eligibility to work in the United States and to complete the required employment eligibility verification form upon hire.   CertiK is proud to be an equal opportunity employer. We will not discriminate against any applicant or employee on the basis of age, race, color, creed, religion, sex, sexual orientation, gender, gender identity or expression, medical condition, national origin, ancestry, citizenship, marital status or civil partnership/union status, physical or mental disability, pregnancy, childbirth, genetic information, military and veteran status, or any other basis prohibited by applicable federal, state or local law.   CertiK will consider for employment qualified applicants with criminal histories in a manner consistent with local and federal requirements. https://www.eeoc.gov/sites/default/files/migrated_files/employers/poster_screen_reader_optimized.pdf   All CertiK employees are expected to actively support diversity on their teams, and in the Company.

Location: North America Workplace: Remote At Linear, we're building the product development system for teams and agents. AI is fundamentally changing how software gets built, and we’re shaping the tools this new era requires. Founded in 2019, Linear has become the platform of choice for more than 40,000 companies (including OpenAI, Coinbase, and Ramp) to plan, build, and ship their products. Today, our team is distributed across North America, Europe, and Australia, and we’re continuing to grow internationally. What unites us is relentless focus, fast execution, and a deep care for software craftsmanship. As a small team, we’re all generalists that work across the full stack (built in Typescript end-to-end). We’re looking for experienced engineers that thrive in an environment of autonomy and individual responsibility to help us build the future of product development. Location & work mode Linear is a remote-first company, with optional co-working offices in San Francisco, New York, and London. This role is open to candidates based in the US and Europe. You can work from anywhere within those regions. We value deep focus and async collaboration, with intentional moments to connect in person through team off-sites, optional co-working, and occasional travel. What you'll do - Build new user-facing features with everything from database models to GraphQL resolvers and UI components - Optimize our data synchronization stack by applying better serialization protocols - Add real-time collaborative editing to our content editor - Improve performance by profiling and tweaking virtualized list rendering - Add analytics, monitoring, and alerts to our service so that we can better respond to operational incidents - Open-source any non-trivial innovations that come out of our work on the product - Redefine best-in-class software development processes so that we can build a purpose-built product. What we're looking for - 5+ years of experience building customer-facing products at a high-quality software company - Strong React and TypeScript fundamentals, with experience across the full stack (Browser technologies, Node, GraphQL, PostgreSQL) - Track record of driving complex, end-to-end features (not just incremental improvements and refactors) with visible impact on the product - Product sensibility: you care about UX, speed, and polish, and you push back when something doesn't feel right - Comfortable working without heavy PM overhead; you can help to shape the problem, not just implement a solution - High ownership mentality: self-directed, full-lifecycle builder who takes a feature from idea to shipped - Thrives in a remote, async-first environment with a lean, high-output team - Experience at a startup or a company with a genuinely high engineering bar Our tech This stack reflects the systems we build and operate. You’re not expected to have experience with everything listed, but you should be excited to work close to product, performance, and real-world scale. - Agentic workload system utilizing temporal, operating at production scale - Proprietary websocket data sync framework built for speed and offline support - React, MobX, styled-components on the frontend - Extensive, widely used, GraphQL API and SDK - Node, Postgres, Temporal, and Redis in the backend - Hosted on Google Cloud with k8s - GitHub, Slack, Notion What we offer We're a small, focused team that cares deeply about the quality of our work and the people we do it with. Here's what you can expect: - Competitive salary and equity - Employee-friendly equity terms including early exercise in the US and extended exercise windows - Daily meal and coffee stipend on every workday - Paid co-working space or desk - Health coverage (based on country requirements) - 5 weeks paid vacation, plus local statutory holidays - 4 months paid parental leave - Paid month off after 4 years & every 2 years thereafter - Regular team events and off-sites - Remote-first with no required commute Learn how we think and work - Read Me https://linear.app/readme a story about our mission - Our hiring process: How we hire at Linear https://linear.app/now/how-we-hire-at-linear - How we work: Designing remote work at Linear https://linear.app/now/designing-remote-work-at-linear - Why and how we do work trials https://linear.app/blog/why-and-how-we-do-work-trials-at-linear Linear blog post - How we use AI in design https://designerfund.substack.com/p/ai-design-linear feature of Linear's design team - Scaling our real-time sync engine https://linear.app/blog/scaling-the-linear-sync-engine talk by our cofounder, Tuomas Artman, at Linear's 2023 offsite - Our recent tender offer: Sharing Linear’s growth with the people building it https://linear.app/now/sharing-growth-with-the-people-building-linear Linear is an equal opportunity employer. We do not discriminate based on race, color, religion, gender identity or expression, sexual orientation, national origin, age, disability, veteran status, or any other protected characteristic under applicable law. A note on recruitment fraud: all official Linear hiring communication comes from an @linear.app http://linear.app email address, and all open roles are listed at linear.app/careers http://linear.app/careers. We never ask candidates for payment or financial information. Suspicious messages can be reported to security@linear.app.

Location: Europe Workplace: Remote At Linear, we're building the product development system for teams and agents. AI is fundamentally changing how software gets built, and we’re shaping the tools this new era requires. Founded in 2019, Linear has become the platform of choice for more than 40,000 companies (including OpenAI, Coinbase, and Ramp) to plan, build, and ship their products. Today, our team is distributed across North America, Europe, and Australia, and we’re continuing to grow internationally. What unites us is relentless focus, fast execution, and a deep care for software craftsmanship. As a small team, we’re all generalists and constantly picking up new challenges. When it comes to code, we’re looking to work with experienced people who can pick a problem and solve it. We use TypeScript and build scalable systems so we can continuously make progress on a solid foundation. We don’t expect you to have a background in everything we use, but we do expect strong JavaScript fundamentals and a background working with React and TypeScript. Location & work mode Linear is a remote-first company, with optional co-working offices in San Francisco, New York, and London. This role is open to candidates based in North America and Europe. You can work from most timezones within these regions. We value deep focus and async collaboration, with intentional moments to connect in person through team off-sites, optional co-working, and occasional travel. What you'll do - Build new user-facing features with everything from database models to GraphQL resolvers and UI components - Optimize our data synchronization stack by applying better serialization protocols - Add real-time collaborative editing to our content editor - Improve performance by profiling and tweaking virtualized list rendering - Add analytics, monitoring, and alerts to our service so that we can better respond to operational incidents - Open-source any non-trivial innovations that come out of our work on the product - Redefine best-in-class software development processes so that we can build a purpose-built product. What we're looking for - 5+ years of experience building customer-facing products at a high-quality software company - Strong React and TypeScript fundamentals, with experience across the full stack (Browser technologies, Node, GraphQL, PostgreSQL) - Track record of driving complex, end-to-end features (not just incremental improvements and refactors) with visible impact on the product - Product sensibility: you care about UX, speed, and polish, and you push back when something doesn't feel right - Comfortable working without heavy PM overhead; you can help to shape the problem, not just implement a solution - High ownership mentality: self-directed, full-lifecycle builder who takes a feature from idea to shipped - Thrives in a remote, async-first environment with a lean, high-output team - Experience at a startup or a company with a genuinely high engineering bar Our tech This stack reflects the systems we build and operate. You’re not expected to have experience with everything listed, but you should be excited to work close to product, performance, and real-world scale. - Agentic workload system utilizing temporal, operating at production scale - Proprietary websocket data sync framework built for speed and offline support - React, MobX, styled-components on the frontend - Extensive, widely used, GraphQL API and SDK - Node, Postgres, Temporal, and Redis in the backend - Hosted on Google Cloud with k8s - GitHub, Slack, Notion What we offer We're a small, focused team that cares deeply about the quality of our work and the people we do it with. Here's what you can expect: - Competitive salary and equity - Employee-friendly equity terms including early exercise in the US and extended exercise windows - Daily meal and coffee stipend on every workday - Paid co-working space or desk - Health coverage (based on country requirements) - 5 weeks paid vacation, plus local statutory holidays - 4 months paid parental leave - Paid month off after 4 years & every 2 years thereafter - Regular team events and off-sites - Remote-first with no required commute Learn how we think and work - Read Me https://linear.app/readme a story about our mission - Our hiring process: How we hire at Linear https://linear.app/now/how-we-hire-at-linear - How we work: Designing remote work at Linear https://linear.app/now/designing-remote-work-at-linear - Why and how we do work trials https://linear.app/blog/why-and-how-we-do-work-trials-at-linear Linear blog post - How we use AI in design https://designerfund.substack.com/p/ai-design-linear feature of Linear's design team - Scaling our real-time sync engine https://linear.app/blog/scaling-the-linear-sync-engine talk by our cofounder, Tuomas Artman, at Linear's 2023 offsite - Our recent tender offer: Sharing Linear’s growth with the people building it https://linear.app/now/sharing-growth-with-the-people-building-linear Linear is an equal opportunity employer. We do not discriminate based on race, color, religion, gender identity or expression, sexual orientation, national origin, age, disability, veteran status, or any other protected characteristic under applicable law. A note on recruitment fraud: all official Linear hiring communication comes from an @linear.app http://linear.app email address, and all open roles are listed at linear.app/careers http://linear.app/careers. We never ask candidates for payment or financial information. Suspicious messages can be reported to security@linear.app.

Location: Home Based - Americas; Home based - EMEA Canonical is a leading provider of open source software and operating systems to the global enterprise and technology markets. Our platform, Ubuntu, is very widely used in breakthrough enterprise initiatives such as public cloud, data science, AI, engineering innovation, and IoT. Our customers include the world's leading public cloud and silicon providers, and industry leaders in many sectors. The company is a pioneer of global distributed collaboration, with 1200+ colleagues in 75+ countries and very few office-based roles. Teams meet two to four times yearly in person, in interesting locations around the world, to align on strategy and execution. The company is founder-led, profitable, and growing. The Canonical MAAS team is responsible for delivering our Metal As A Service hyperscale provisioning technology. Ubuntu strives to be the most scalable, cloud ready server distribution and MAAS is our platform to get it there. MAAS is a rapidly evolving software stack written in Python and Go, and we are looking for experienced software engineers who understand performance at scale, networking, storage and usability. Applicants should be passionate about the future of Ubuntu and be able to show technical leadership with a globally distributed team of engineers who share that passion. This position requires international travel several times a year. This role entails Develop MAAS core components and features to make MAAS the #1 bare metal cloud system. Shape the architecture of MAAS to make it simpler, faster and easier to use. Collaborate with other teams to ensure MAAS works well with other tools and is released on time. Contribute your improvements to our continuous integration environment, tests and practices, to maintain fast feedback and good test coverage. Contribute to documentation of current and existing features, making it world-class resource for Data Centre operators and users. Provide technical communication and collaboration with other teams where appropriate. Take personal ownership of problems and drive them to solutions. Travel internationally a few times a year to meet and collaborate with your and other teams. What we are looking for in you Passionate about open source software, Linux, and Data Centre automation Solid track record of professional software development experience in Python, Go for back-end roles, or TypeScript, React for front-end roles. Capacity to learn quickly about new systems and techniques Excellent logic, problem solving, and troubleshooting skills Strong English language communication skills - both written and verbal Experience with Linux server technologies, including but not limited to Virtualization (KVM), Containers (LXC), etc. You have a Bachelor’s or equivalent in Computer Science, STEM or similar degree Knowledge of network technologies, including PXE, DHCP, TFTP, DNS, NTP Some experience with Baseboard Management Controllers and Protocols (Redfish, IPMI, AMT and others) Strong experience with networking, storage technologies and Cloud hosting and infrastructure. Ideally, experience of large-scale physical server provisioning and automation, including rapid deployment, configuration, management and service orchestration. Familiarity with some of the open source development tools and methodologies used in creation of several Ubuntu projects (MAAS, Juju, Ubuntu Server, LXD, Ubuntu Core), such as Launchpad, Debian packaging tools (APT, dpkg) and snapcraft. An exceptional academic track record from both high school and preferably university. Willingness to travel up to 4 times a year for internal events What we offer colleagues We consider geographical location, experience, and performance in shaping compensation worldwide. We revisit compensation annually (and more often for graduates and associates) to ensure we recognize outstanding performance. In addition to base pay, we offer a performance-driven annual bonus or commission. We provide all team members with additional benefits which reflect our values and ideals. We balance our programs to meet local needs and ensure fairness globally. Distributed work environment with twice-yearly team sprints in person Personal learning and development budget of USD 2,000 per year Annual compensation review Recognition rewards Annual holiday leave Maternity and paternity leave Team Member Assistance Program & Wellness Platform Opportunity to travel to new locations to meet colleagues Priority Pass and travel upgrades for long-haul company events About Canonical Canonical is a pioneering tech firm at the forefront of the global move to open source. As the company that publishes Ubuntu, one of the most important open-source projects and the platform for AI, IoT, and the cloud, we are changing the world of software. We recruit on a global basis and set a very high standard for people joining the company. We expect excellence; in order to succeed, we need to be the best at what we do. Most colleagues at Canonical have worked from home since our inception in 2004.​ Working here is a step into the future and will challenge you to think differently, work smarter, learn new skills, and raise your game. Canonical is an equal opportunity employer We are proud to foster a workplace free from discrimination. Diversity of experience, perspectives, and background create a better work environment and better products. Whatever your identity, we will give your application fair consideration. #LI-remote

Location: US / Remote Workplace: remote About the Role: We are seeking a Senior Blockchain Security Engineer with a strong security mindset and deep technical expertise across smart contracts, blockchain nodes, and decentralized infrastructure. You will play a critical role in safeguarding Web3 projects by auditing code, building security tools, and driving research. If you have hands-on experience in Web3 and are passionate about advancing the security of decentralized technologies, we’d love to hear from you. Responsibilities Audit and review codebases for smart contracts, blockchain protocols, and decentralized applications (dApps) to identify and remediate vulnerabilities. Work closely with external blockchain teams to enhance the security of their products by providing expert security consultation and implementing remediation strategies. Conduct independent security research, explore new attack vectors, and deliver actionable insights. Design, develop, and maintain internal security tools and frameworks to strengthen our security services. Continuously improve internal processes, methodologies, and service offerings while ensuring high client satisfaction and long-term partnerships. Requirements Bachelor’s, Master’s, or PhD in Mathematics, Computer Science, or Information Security. Minimum 3 years of professional experience as a Software Engineer, Security Engineer, or in a related role. At least 2 years of hands-on experience with blockchain technologies, including: Smart contracts (EVM chains, Solana, Move, etc.), Blockchain protocols (nodes, SDKs, Cosmos, etc.) Strong expertise in threat modeling, risk assessment, and security analysis. Proficiency in one or more programming languages: Rust, Go, Solidity, Python, etc. Passion for Cryptocurrency, DeFi, and Blockchain technologies. Preferred Qualifications Solid academic or practical background in Mathematics, Cryptography, or Cybersecurity. Demonstrated experience conducting audits and collaborating with leading Web3 protocols. Recognized achievements such as published CVEs, or strong placements in Attackathons, Bug Bounties, or Audit Contests. About the Company CertiK is the largest blockchain security auditor and provides a comprehensive suite of tools to secure the industry at scale. To date, CertiK has worked with over 4,900 Enterprise clients, secured over $557 billion worth of digital assets, and has detected over 18,000 vulnerabilities in blockchain code. Our clients include leading projects such as OKX, Tether, Ripple, and Pancakeswap. Our investors include top VCs like Tiger Global, Coatue Management, Shunwei Capital and Hillhouse Capital as well as industry leaders like Coinbase Ventures and Binance. Investors = Insight Partners, Sequoia, Tiger Global, Coatue Management, Lightspeed, Advent International, SoftBank, Hillhouse Capital, Goldman Sachs, Shunwei Capital, IDG Capital, Wing, Legend Star, Danhua Capital and other investors. About You You’re a self-starter. You believe in tackling the most important problems, even if they are the most difficult problems. You’re comfortable with the unknown and understand that startup life means that you’re going to be wearing multiple hats. And that’s what motivates you. You’re accountable and obsessed with improvement, both in yourself and in others. You’re up to the challenge of building a world-class company that aims to be the infrastructure for more secure software for all. Compensation Target annual salary for this role performed in the US is $102,000 - $180,000. The exact compensation at which this job is filled will be determined by the skills and experience of qualified candidates. CertiK is proud to offer medical, vision, and dental insurance, 401(k) plan with company matching, life and accidental death and dismemberment insurance, HSA (with high deductible plan), FSA, and other benefits to all full-time employees, along with flexible paid time off and holidays. CertiK also offers a variable commission program for business development sales roles.   In compliance with federal law, all persons hired will be required to verify identity and eligibility to work in the United States and to complete the required employment eligibility verification form upon hire.   CertiK is proud to be an equal opportunity employer. We will not discriminate against any applicant or employee on the basis of age, race, color, creed, religion, sex, sexual orientation, gender, gender identity or expression, medical condition, national origin, ancestry, citizenship, marital status or civil partnership/union status, physical or mental disability, pregnancy, childbirth, genetic information, military and veteran status, or any other basis prohibited by applicable federal, state or local law.   CertiK will consider for employment qualified applicants with criminal histories in a manner consistent with local and federal requirements. https://www.eeoc.gov/sites/default/files/migrated_files/employers/poster_screen_reader_optimized.pdf   All CertiK employees are expected to actively support diversity on their teams, and in the Company.

Location: Remote - Worldwide About us OpenZeppelin is the security standard onchain finance is built on. Founded in 2015, our mission is to accelerate the world's transition to an open financial system, built on open standards and secured by rigorous research. Our open-source Contract Libraries have facilitated over $35 trillion in onchain value and are used by 10 of the top 10 tokenized money market funds and 9 of the top 10 stablecoins by market cap. We combine AI-native security tooling with deep research and a decade of audit expertise to support leading institutions and crypto-native teams shaping the next generation of digital assets like DTCC, Fidelity, Coinbase, Uniswap, Aave, the Ethereum Foundation, and many more across the full secure development lifecycle. Please note: Always refer to OpenZeppelin's official job page for the most accurate information about our open roles, as we have seen multiple third party job sites posting inaccurate information. The Security Services Team OpenZeppelin's Security Services team is responsible for the security of the world's leading web3 protocols and top financial institutions building onchain. Our researchers partner with client teams across the full lifecycle of a protocol: working on architecture and design before any code is written, co-creating novel mechanisms and primitives with engineering teams, conducting deep audits of pre-launch codebases, and providing continuous coverage as production systems evolve. Our clients range from emerging projects shipping their first contracts to global financial institutions running production onchain systems at scale. What you'll be doing Review smart contracts for top decentralized applications, blockchain infrastructure and financial institutions before they launch. Find vulnerabilities, prioritize them, and present findings to the client. Drive audits independently from start to finish, with AI as your primary collaborator. When useful, partner with another researcher to attack the code together and pressure-test findings. Partner with client teams during the design phase of new protocols, analyzing architecture, trust assumptions, and operational constraints before any code is written (Design Reviews, Applied Research engagements). Use AI efficiently throughout the audit process, and build skills, agents, and workflows that compound across the team. Conduct open-ended research into cutting-edge blockchain technologies, vulnerability classes, and emerging attack vectors, and contribute findings back to OpenZeppelin's internal knowledge base and to the broader ecosystem. You have Hands-on and practical experience in one or more of the following: software development, cybersecurity, applied mathematics, distributed systems, cryptography, cryptoeconomics or game theory, or DeFi mechanisms. Experience designing and developing smart contracts, not only auditing them. Strong working knowledge of Solidity and the broader Ethereum / EVM ecosystem (common libraries, frameworks, smart contract patterns). Modern AI tooling is central to how you work, not a novelty. You use it daily to expand audit coverage, reason about complex systems, and produce high-quality outputs faster. You evaluate AI-generated code with a critical eye. Comfort building and extending your own tooling (skills, agents, prompts, scripts, or full workflows) that the rest of the team can adopt and build on. An advanced English level and strong communication skills (oral and written). Nice to have Experience with non-EVM ecosystems and languages, such as Canton, Move (Sui, Aptos), Golang (Cosmos SDK), Cairo (Starknet), Rust-based blockchains (Solana, Stellar), or ZK circuits and cryptography-heavy systems. Experience with risk assessment work in the crypto industry (smart contract risk assessment, threat modeling). Working hand-in-hand with protocol teams on co-creative engagements, helping design, specify, and implement smart contracts alongside the research. Web2 security expertise (penetration testing, web application security, infrastructure security, or appsec). Experience with formal verification, invariant testing, or advanced fuzzing tools (Echidna, Foundry, Halmos, Certora). A track record in audit contests (Code4rena, Sherlock, Cantina) or bug bounty platforms (Immunefi, HackerOne). Public security research output, such as published findings, blog posts, conference talks, or contributions to open-source security tooling. Logistics Our interview process takes place on Google Meet and tends to consist of the following stages: Recruiter call (30 minutes) Manager interview (60 minutes) Technical interview (60 minutes) Paid work trial (paid code review assessment) Reference checks Please let us know if you require any accommodations for the interview process, and we’ll do our best to provide assistance. Benefits Meet your teammates at company gatherings around the world 😎 Enjoy the flexibility of fully remote work 🌎 Take the time you need with flexible time off 🏝 Grow your family with 8 weeks of paid leave for primary caregivers, 4 weeks for secondary caregivers, and a one-time $3,600 baby bonus 💙 Build your ideal home office with up to $500 in equipment support 🪑 Stay covered with medical insurance 🏥 Keep growing with learning and development opportunities 🧠 Get a monthly stipend for your preferred co-working space 💻 At OpenZeppelin , we are an equal opportunity employer and we value different perspectives. We are committed to building a diverse workforce. This includes but is not limited to gender, race, sexual orientation, religion, national origin and other characteristics that make each one of us unique. In this uniqueness, we find the most value. Come join us! Use of AI as part of the recruiting process As part of OpenZeppelin’s recruitment process, we may use automated tools, including artificial intelligence, to assist in reviewing applications and assessing candidate qualifications. These tools are used to support our People team by identifying relevant skills and experience, and are not used to make decisions solely by automated means. All hiring decisions involve human review. Any personal data provided as part of your application will be processed in accordance with OpenZeppelin’s Data Privacy Notice . If you have questions about this recruitment process or would like to request human review of your application, please contact us at talent@openzeppelin.com.