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Location: United States Workplace: remote OVERVIEW Welo Data is looking for English speakers to join a remote project as a Search Quality Rater. In this role, you will help improve how search engines understand and deliver useful results to users. What you’ll do: Review search results and evaluate how helpful and relevant they are to the user’s query Answer simple true/false questions about the quality of content Rate whether search results meet the user’s needs using clear guidelines Complete straightforward online tasks that contribute to improving AI systems No specialized technical experience is required - we provide the guidelines and support you need to succeed! Please click here for a short demo of these types of tasks: What Does a Search Quality Rater Do? (youtube.com)   Why this work matters: Your feedback helps train and improve AI technology, making search engines smarter and more useful for people around the world. Schedule & Support: Fully remote position Set your own schedule and complete tasks when it’s convenient for you Support is available from the project management team during business hours (Monday–Friday, 9:00 AM – 5:30 PM Pacific) Project Details Job Title: Search Quality Rater Location: Remote, US-based Hours: Minimum 10 hours per week, up to 29 hours per week; set your own schedule Start date: ASAP Employment Type: W2 Part-Time Employee, payment every 2 weeks Longevity of project: 12 months with possibility of extension. This work is based on project needs. Weekly hours may vary. Benefits: Paid Sick Time Employee Assistance Program  Following eligibility requirements:  Medical Insurance Dental Insurance Vision Insurance HSA Voluntary Life Insurance Accident, Critical Illness,Hospital Indemnity Insurance 401(k) Retirement Plan Currently hiring in: Alabama, Florida, Georgia, Indiana, Kansas, Kentucky, Montana, New Hampshire, North Carolina, Ohio, Oklahoma, Pennsylvania ,South Carolina, Tennessee, Texas, Utah, Virginia, West Virginia, Wisconsin. Applicants must be of at least 18 years of age to apply. Requirements Fluency in English Strong understanding of popular culture in the United States Must be dedicated only to "Search Quality rating program" and NOT other search or ads rating programs Must not have current or previous experience with "Ads quality rating" Web-savvy and able to work in a fast-paced environment Excellent online research skills Reliable computer system and internet connection Reliable anti-virus software (as you will be surfing the web as part of the work) Ability to follow instructions in English and comply with the project conventions and rules expected by the client Must sign a Non-Disclosure Agreement to protect client confidentiality Must pass learning modules and a required quality test designed by our client before starting work Recruitment process Application & Initial Screening: Submit your interest through our Careers Page and answer a few brief project-related questions. Candidate Portal Registration: Keep an eye on your inbox! You’ll receive an invite to create your profile on our internal platform , where you will complete your final application steps. Skill & Language Evaluation: Take a quick assessment to showcase your linguistic expertise. Project Guidance: Access our exclusive "Know-How" guides and project documentation to set you up for success. Client Exam: Complete a client entrance exam to ensure you're ready for the live project. Onboarding & Launch: Once verified (ID & Tax only), you’ll be officially onboarded. Set your own schedule and start working! 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.  In addition, we employ anti-fraud checks to ensure all candidates meet the requirements of the program. If you are currently working or have previous experience as an "Ads Quality Rater", unfortunately, you will not be able to work on our Search Quality Rating project. However, we often have an open Ads Rating job posting. Please check our careers page here to apply: https://jobs.lever.co/welocalize

Location: Home Based - APAC 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 require an HR function that thinks and acts globally.​ We're looking for a Graduate HR Generalist to offer their expertise to our APAC region. It's an exciting time to join with the opportunity to help shape and create an HR function for the future.  You will demonstrate a high work ethic and the personal confidence to set and defend high expectations of colleagues, counterparts and processes. You must be able to work independently, take a hands-on approach, and interface effectively with professionals at all levels. You'll need excellent communication, professional and interpersonal skills as well as the ability to function in a proactive, innovative environment. We look to HR both to support our colleagues in their personal needs and development, and also to maintain consistently high standards across multiple teams, managers and directors. Location: This role will be based remotely in the APAC region The role entails the individual to: Provide HR support by answering team members’ questions and responding to requests regarding their employment and contracts, escalating when necessary. Requests may include information about the new starter process and onboarding, questions regarding global benefits, employment verifications, and other general inquiries. Maintain our HRIS, ensuring a high degree of accuracy and timeliness in processing all team member changes and new joiners. Owning global projects (e.g. engagement, training or culture initiatives) Partnering with the managers and employees - supporting HR processes and driving the people strategy for your areas of responsibility Working as a truly global partner to colleagues, especially leads, managers and executives Process new hires, including country-specific on-boarding documentation, creation of files, systems set-up, and coordination of introductory reviews. Provide support to employees for the enrollment and processing of benefits and the payroll process, ensuring monthly data is provided on time and is accurate. Liaise with payroll to guarantee smooth salary payments. Create purchase orders for internal departments. Provide administrative support to employees for the enrollment and processing of benefits. Conduct regular audits of employment files and systems to ensure they are up-to-date, accurate, and GDPR compliant. Continually work to better our processes, spotting areas we can improve to drive our function forward. What we are looking for in you Track record of exceptional achievement from high school and graduate studies. Internship experience working in an HR/People team is beneficial, preferably in the Technology industry. Excellent verbal and written communication skills. Able to prioritize complex workloads, manage time effectively and work well under pressure. Self-motivated and results-orientated with a clear focus on accuracy. High level of honesty, integrity, and ability to handle confidential data. Flexible attitude and easily adaptable to change. Willing to take the initiative and provide suggestions and ideas to contribute to the success of the role/team. Ambitious to grow your career within HR. 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 recognise outstanding performance. In addition to base pay, we offer a performance-driven annual bonus. 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. Employee Assistance Programme. 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 its 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: Worldwide Workplace: hybrid COLUMBIA SHIPMANAGEMENT is looking for self-motivated and skilled seafarers to join our expanding fleet.   JOB DESCRIPTION   Responsible for maintaining the electrical and electronic equipment onboard the ship. Holder of valid COC (STCW Reg III/6) with verification. STCW and training certificates corresponding to the rank must be valid. Good communication and solution finding skills. English proficiency written and spoken. Safety culture and mindset.   VESSEL'S SPECIFIC REQUIREMENTS   Minimum Experience in Rank 4 months. Experience with High Voltage installation. Experience with Electro-Hydraulic crane repairs. Trading area [USA, Australia]   CONTRACT TERMS & CONDITIONS   Contract Duration [4 months +/- 1 months] Contract Benefit: competitive salary Terms and condition as per CBA applicable Rejoining Bonus Free Internet onboard and wellbeing support   You may include with your application any reference, specific job qualification, and your availability date. Looking forward to welcoming you in the Columbia Family.

Location: New York, NY / Seattle, WA / San Francisco Bay Area, CA / Remote Workplace: remote About CertiK 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, Yearn, and Chiliz.  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 the role We are seeking security research interns to join a top-notch security research team. We are working on a wide range of security research topics, including malware analysis, vulnerability detection, network anomaly detection, mobile app analysis, reverse engineering, and fraud detections. Multiple research tasks are ready to be explored. Responsibilities Develop analysis tools to facilitate security discovery and design mitigation techniques to deter security threats. Review system implementation of sandbox, VM, network modules, and critical distributed system. Perform vulnerability discovery and develop PoC exploits to large distributed system implementations. Publish research findings in related academic and industry venues. Requirements Pursuing Masters or PhD in Computer Science or Cybersecurity related field. Experiences in vulnerability discovery and exploitation on web applications or system software. Preferred Experiences in WASM or Rust/Go development is a plus. CTF experiences are a plus as well. Compensation $3000 - $8000/month (Full Time). The exact compensation at which this internship is filled will be determined by the skills and experience of qualified candidates. #blockchain #startups #hiring CertiK accepts applications on an ongoing basis for this position until it is filled. The approximate date of closing will be April 30, 2024. 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: Worldwide Workplace: hybrid COLUMBIA SHIPMANAGEMENT is looking for self-motivated and skilled seafarers to join our expanding fleet.       JOB DESCRIPTION   Responsible for the safe cargo operations and maintenance of the vessel. Holder of valid COC (STCW Reg II/2) with verification. Holder of valid STCW certifications required for the position. Good communication and leadership skills. Fluent in written and spoken English language. Experience with multicultural working environment. Safety culture and mindset.   VESSEL'S SPECIFIC REQUIREMENTS   Minimum experience requirements: 4 months in Rank with the same type/size of vessel. Experience onboard same vessel tonnage is mandatory. Experience in Steam Turbines cargo pump system is recommended. Experience with Crude Oil and STS cargo operations. Experience in trading area USA and Australia is recommended.   CONTRACT TERMS & CONDITIONS   Contract Duration [4 months +/- 1 months] Contract Benefit: competitive salary Terms and condition as per CBA applicable Rejoining Bonus Free Internet onboard and wellbeing support   You may include with your application any reference, specific job qualification, and your availability date. Looking forward to welcoming you in the Columbia Family.

Location: Worldwide Workplace: hybrid CSM is looking for self-motivated and skilled seafarers to join our expanding fleet of Columbia Shipmanagement. JOB DESCRIPTION & QUALIFICATIONS   Responsible for the proper operation and maintenance of the engine room and other machinery equipment. Assist the Chief Engineer in managing daily engine room operations Supervise maintenance and repair of main engine, auxiliaries, and machinery Plan and execute preventive maintenance schedules Monitor fuel, lube oil, and machinery performance Lead engine room watchkeeping and manage engine crew Ensure safety, pollution prevention, and compliance with regulations   Holder of a valid COC (STCW Reg III/2) with verification. Holder of valid STCW certifications required for the position. Experience in repairs and dry docking is required Experience with a multicultural working environment. Good communication and leadership skills. Effective English communication Safety culture and mindset.   VESSEL'S SPECIFIC REQUIREMENTS   Minimum experience requirements: 8 months in rank with the same type/size of vessel. Experience in Steam Turbines cargo pump system is recommended. Experience with Crude Oil and STS cargo operations. Experience in trading area USA and Australia is recommended.   CONTRACT TERMS & CONDITIONS   Contract Duration [4 months +/- 1 month] Contract Benefit: competitive salary Terms and condition as per CBA applicable Rejoining Bonus Free Internet onboard and wellbeing support   You may include with your application any reference, specific job qualification, and your availability date. Looking forward to welcoming you in the Columbia Group Family.

Location: Worldwide Workplace: hybrid COLUMBIA SHIPMANAGEMENT is looking for self-motivated and skilled seafarers to join our expanding fleet.     JOB DESCRIPTION   Responsible for maintaining the electrical and electronic equipment onboard the ship. Holder of valid COC (STCW Reg III/6) with verification. STCW and training certificates corresponding to the rank must be valid. Good communication and solution finding skills. English proficiency written and spoken.   VESSEL'S SPECIFIC REQUIREMENTS   Minimum experience requirements: 4 months in Rank with the same type/size of vessel. Experience in FRAMO and/or Steam Turbines cargo pump system is recommended. Experience in high Voltage installation is preferred. Experience in trading area USA and Australia is recommended.   CONTRACT TERMS & CONDITIONS   Contract Duration [4 months +/- 1 months] Contract Benefit: competitive salary Terms and condition as per CBA applicable Free Internet onboard and wellbeing support   You may include with your application any reference, specific job qualification, and your availability date. Looking forward to welcoming you in the Columbia Family.

Location: Worldwide Workplace: hybrid COLUMBIA SHIPMANAGEMENT is looking for self-motivated and skilled seafarers to join our expanding fleet.     JOB DESCRIPTION   Overall ship's command and responsibility to ensure safety of crew and environmental protection. Responsible for the compliance with the International regulations and company safe practices and policies.  Holder of valid COC (STCW Reg II/2) with verification. Holder of valid STCW certifications required for the position. Good communication and leadership skills. Fluent in written and spoken English language. Safety culture and mindset. Experience with multicultural working environment.   VESSEL'S SPECIFIC REQUIREMENTS   Minimum experience requirements: 12 months in Rank with the same type/size of vessel. Experience in Deepwell Centrifugal Cargo pump system is mandatory.     CONTRACT TERMS & CONDITIONS   Contract Duration [4 months +/- 1 months] Terms and condition as per CBA applicable Contract Benefit: competitive salary Rejoining Bonus Free Internet onboard and wellbeing support   You may include with your application any reference, specific job qualification, and your availability date. Looking forward to welcoming you in the Columbia Family.

Location: Worldwide Workplace: hybrid COLUMBIA SHIPMANAGEMENT is looking for self-motivated and skilled seafarers to join our expanding fleet.   JOB DESCRIPTION   Responsible for proper operation and maintenance of Engines room and other machinery equipment. Holder of valid COC (STCW Reg III/2) with verification. Holder of valid STCW certifications required for the position. Experience in repairs and dry docking is required Experience with multicultural working environment. Good communication and leadership skills. Effective English communication Safety culture and mindset.   VESSEL'S SPECIFIC REQUIREMENTS   Minimum Experience in Rank 4 months with Engine type (2 stroke of output 8000kw and above) Experience on Electronic engines (RT Flex - ME) is preferred Experience with cargo gear [deck Crane 30MT SWL] Trading area [USA, Australia]   CONTRACT TERMS & CONDITIONS   Contract Duration [4 months +/- 1 months] Contract Benefit: competitive salary Terms and condition as per CBA applicable Rejoining Bonus Free Internet onboard and wellbeing support   You may include with your application any reference, specific job qualification, and your availability date. Looking forward to welcoming you in the Columbia Family.

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: 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: Germany Workplace: remote Ads Quality Rater       Welo Data is an award-winning localization and data transformation company. We run one of the world's largest ad evaluation programs and want you to join our team!   As an Ads Quality Rater, you will review and rate internet ads to improve which ads are presented to end users. In other words, you will provide feedback to the AI ​​program on how good or bad its ad suggestions are based on the user's keywords.     You will review ads in both English and German.   This position is ideal for people who:   - surf the Internet daily - Use search engines regularly - know what Internet users are searching for based on a few keywords - enjoy researching topics online - looking for a flexible and entertaining part-time job   Project details    Job title: Ads Quality Rater (m/f/d) Remuneration: Variable depending on the complexity of the task Location: Remote (Germany only)  Working hours: 5-20 hours per week, flexible scheduling  Start Date: Immediately  Employment relationship: Freelancer/self-employed: self-employed contractor  Project duration: long-term      There is no formal interview for this job! No calls, no waiting, and no wasting time wondering whether or not you got the job. Instead, you will be guided through a self-directed and automated recruitment process.   IMPORTANT NOTE: Welo Data uses numerous identity verification checks to ensure that everyone who joins the team is genuine, qualified, and ready to work. To avoid misunderstandings, do not use IP obfuscation programs (such as VPNs). Requirements Fluent in German Good knowledge of English (written and oral) Familiarity with modern popular culture Reliable computer system and internet connection Familiarity with the use of online search engines Signing a standard NDA (non-disclosure agreement) and a service level agreement Working with Welo Data is your chance to advance your career.   - We offer you a variety of unique and interesting projects in a multicultural and international working environment   - We attach particular importance to long-term relationships and close cooperation with our partners   - Our projects offer you excellent opportunities to develop your career and learn   - And our community team is  there for you 24 hours a day, 6 days a week if you need support   Interested in working together? Then apply here !

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.