Solidity jobs in crypto and blockchain companies

Golang Auditor
Nethermind
What are we all about? We are a team of builders and researchers on a mission to empower enterprises and developers worldwide to access and build on decentralized systems. Our expertise covers several domains: Ethereum and Starknet protocol engineering, layer-2, AI, cryptography research, protocol research, decentralized finance (DeFi), security auditing, formal verification, real-time monitoring, smart contract development, and dapps and enterprise engineering. Working to solve some of the most challenging problems in the blockchain space, we frequently collaborate with renowned companies, such as Ethereum Foundation, Starknet Foundation, Gnosis Chain, Flashbots, Forta Protocol, Lido, EigenLayer, Open Zeppelin, RISCZero, Aleph Zero, and many more. Today, we are a 350+ strong team working remotely across 66+ countries. View all our open positions here: https://www.nethermind.io/open-roles We're seeking an experienced Smart Contract Security Auditor to join our team in safeguarding Web3 protocols and applications. As a key member of our security team, you'll conduct comprehensive audits of smart contracts while contributing to our blockchain infrastructure development. Responsibilities: Work directly with protocols in the Solana, Ethereum, StarkNet, and Polkadot ecosystems to review their code and help secure their protocols. Perform thorough security audits of smart contracts written in Solidity Develop and maintain security tooling using Golang to enhance our audit capabilities Collaborate with teammates to maintain and continually improve our existing blockchain security tools using modern software engineering practices. Develop new blockchain security tools. Engage in meetings with clients to discuss security and best practice improvements. Skills: Understanding of blockchain technology and the Ethereum network. Solid understanding of the Ethereum Virtual Machine. Fluency in Solidity smart contract security and Golang audit. Detailed understanding of common smart contract vulnerabilities. Fluency with common tools and frameworks used for the development and security analysis of smart contracts. Strong debugging skills and/or experience in reverse engineering. Portfolio of audit report. Nice to Haves: Good written and verbal communication skills. Understanding of most common DeFi applications. Publicly visible audit reports in your portfolio. Disclaimer: I hereby consent to my personal information being stored and processed by Demerzel Solutions Limited (t/a Nethermind) (the “Company”) for recruitment purposes in relation to both the selected job role and any other role the Company considers me a qualified candidate for. All data storing and processing by the Company takes place in accordance with the UK GDPR. Kindly refer to our privacy policy for more details. Your consent to share personal information is entirely voluntary, and you may withdraw your consent at any time. Should you have any questions about this process, or wish to withdraw your consent please contact: [email protected] Keep up to date on what we are working on by following us on our social channels       Click here to view our Privacy Policy.
👉🏻 Remote
👉🏻 Full time
🌐 Worldwide

13 days ago

Senior React.js Full-stack Developer
Lemon.io
Are you a talented Senior Developer looking for a remote job that lets you show your skills and get decent compensation? Look no further than Lemon.io — the marketplace that connects you with hand-picked startups in the US and Europe.   What we offer: Earn $5k—$10,4k monthly: the rate depends on your seniority level, skills and experience. We've already paid out over $11M to our engineers. No more hunting for clients or negotiating rates — let us handle the business side of things so you can focus on what you do best. We'll manually find the best project for you according to your skills and preferences. Choose a schedule that works best for you. It’s possible to communicate async or minimally overlap within team working hours. We respect your seniority so you can expect no micromanagement or screen trackers. Communicate directly with the clients. Most of them have technical backgrounds. Sounds good, yeah? We will support you from the time you submit the application throughout all cooperation stages. Most of our projects involve working in a fast-paced startup environment. We hope you like it as much as we do. Through our community, we will connect you with the best developers from more than 50 countries.   Requirements: 4+ years of software development experience. 3+ years of commercial experience with React.js. 3+ years of commercial experience with Python AND/OR 4+ years of experience with Node.js.   For React & Python Developer: hands-on experience with AWS, Next.js, TypeScript, PostgreSQL would be a plus. For React & Node Developer: hands-on experience with AWS, Next.js, TypeScript is a must.   Strong technical skills: as a Senior Developer, you are expected to be able to create projects from scratch and have a deep understanding of application architecture. Clear and effective communication in English — advanced ability to discuss business tasks, justify decisions, and communicate issues. Good self-presentation is also essential for upcoming client calls. Strong self-organizational skills — ability to work full-time remotely with no supervision. Reliability — we want to trust you and expect that you won’t let us and the client down. Adaptability and Flexibility — the ability to onboard the project promptly after accepting it and start delivering results quickly.   Sounds good for you? Apply now and join the Lemon.io community!   NOT YOUR TECH STACK? We have different projects for Senior Engineers, so if you have 4+ years of commercial experience in software development/testing and you are fluent with AI Engineering or QA Engineering, Blockchain, Solidity, we would be happy to communicate and provide you with a project that matches your experience. Just apply, and we will share more details with you.   If your experience matches our requirements, be ready for the next steps: VideoAsk — watch a short video about our startup, up to 10 minutes Complete your profile on our website 30-minute screening call Technical interview Feedback Magic Box (we are looking for the best project for you).   P.S. We work with developers from 50+ countries in different regions: Europe, LATAM, Asia (Philippines, Indonesia), Oceania (Australia, New Zealand, Papua New Guinea), Canada, and the UK. However, we have some exceptions.   At the moment, we don’t have a legal basis to accept applicants from the following countries: European: Iceland, Liechtenstein, Kosovo, Belarus, Russia, and Serbia. Latin America: Cuba and Nicaragua Most Asian countries and Africa.   We expand and shorten the list of exemptions regularly.   Do you represent a company with engineers who match the description and want to collaborate with us through staff augmentation? Then register here.
👉🏻 Remote
👉🏻 Full time
💰 $60k-$124k
🌐 LATAM, Europe, UK, Canada, Indonesia, Papua New Guinea, Australia and New Zealand

44 days ago

Solidity Developer
SORAMITSU
SORAMITSU is an award-winning global financial technology company with expertise in developing blockchain-based solutions for digital asset and identity management. Our mission is to use blockchain to promote innovation and solve pressing societal challenges.SORAMITSU is the developer of and major contributor to the open-source blockchain platform Hyperledger Iroha, which is tailored for enterprise and public-sector use. Hyperledger Iroha, a project of Hyperledger Foundation, part of the Linux Foundation, has a permissions system that is scalable and performant.Utilizing blockchain, SORAMITSU has developed a digital currency for the National Bank of Cambodia, a CBDC Proof-of-Concept with the Bank of the Lao PDR, a closed-loop payment system for the University of Aizu in Japan, an identity verification system prototype for Bank Central Asia in Indonesia, we were finalists in the Monetary Authority of Singapore CBDC Challenge, and are currently participating in Asia-Pacific's first proof-of-concept test of a cross-border, multi-currency security settlement system using distributed ledger technology with the Asian Development Bank. We have also conducted proof-of-concept tests for several major Japanese enterprises, and are active contributors to open source projects, such as Klaytn, South Korea's leading Layer-1 blockchain, KAGOME, the C++ Polkadot Host implementation, the SORA crypto-economic system, the Polkaswap DEX, and the DeFi wallet, Fearless WalletBased on these experiences, SORAMITSU aims to deploy cutting-edge technology on a global level in order to expedite financial inclusion and health, mitigate economic inefficiencies, and contribute to the fulfilment of the Sustainable Development Goals.You can find out more by visiting our homepage at soramitsu.co.jp or check out our Twitter profile.We are seeking a highly skilled blockchain developer with deep expertise in blockchain technologies and smart contract development, focusing on Solidity, Ethereum, and various Layer 1 and Layer 2 protocols. This role will involve designing, implementing, and optimizing secure and scalable blockchain solutions.You will be responsible for:Develop, deploy, and maintain secure, efficient, and scalable smart contracts on Ethereum and other blockchain networks.Architect decentralized systems and define smart contract standards for new projects and features.Lead code reviews and provide mentorship to junior and mid-level developers.Optimize smart contract code for gas efficiency, performance, and security.Collaborate with cross-functional teams including frontend developers, product managers, and security experts.Identify and mitigate security risks within smart contracts.Stay up-to-date with the latest trends, tools, and best practices in Solidity and blockchain development.Perform rigorous testing and auditing of contracts, and ensure all code is secure and bug-free.Requirements:3+ years working specifically with Solidity and Ethereum-based development.Fluent EnglishDeep understanding of Ethereum's architecture, smart contracts, and related technologies.Proficient in Solidity, Web3.js, and Ethers.js.Experience with deploying and interacting with smart contracts on Ethereum, Binance Smart Chain, or other EVM-compatible blockchains.Familiarity with common design patterns (e.g., ERC-20, ERC-721, ERC-1155) and decentralized protocols.Expertise in smart contract security practices, including common vulnerabilities (e.g., reentrancy, overflow/underflow, front-running).Knowledge of decentralized finance (DeFi) protocols and their smart contract ecosystems.Experience with testing frameworks (e.g., Truffle, Hardhat, Foundry).Experience with CI/CD pipelines and blockchain-specific deployment strategies.Ability to communicate complex technical concepts effectively to both technical and non-technical stakeholders.Strong problem-solving, debugging, and optimization skills.Preferred:Experience in developing for Layer 2 networks or alternative blockchain protocols (e.g., Optimism, Arbitrum, Polygon).Familiarity with cross-chain technologies and bridging protocols.Experience with smart contract auditing tools like Slither, MythX, and othersGeneral Skills:Programming Languages: Solidity, JavaScript, Python, with knowledge of Rust considered a plus.Blockchain Platforms: Ethereum, Binance Smart Chain, Polygon, Arbitrum, Optimism, etc.Frameworks & Libraries: Truffle, Hardhat, Foundry, Web3.js, Ethers.js.Security Best Practices: Smart contract auditing, vulnerability mitigation, best practices for gas optimization.Collaboration Tools: Git, GitHub/GitLab, JIRA, Slack, etc.Soft Skills: Strong communication in English, problem-solving, and analytical thinking.Additional Requirements:Please include a link to your GitHub profile showcasing examples of your code or repositories where you’ve contributed.What we offer:A relaxed remote-first (work from anywhere) work environment with flexible working hoursA permanent, full-time role with a rapidly growing international team of professionalsAn educational budget to support your continued growth and developmentOpportunities to attend global meetups and conferences for learning and/or speaking engagementsAn opportunity to be a part of an award-winning team designing a better world through decentralized technologiesThis is a remote position. Our distributed team is mostly spread across Europe and Asia. Team meetings are held generally during European working hours, and it is expected that you would adapt if necessary and be available accordingly.If you have the required qualifications and are passionate about the Web3 industry, we encourage you to apply for this exciting opportunity.SORAMITSU values diversity and is committed to providing equal opportunities for all applicants and employees. Our employment decisions, such as hiring, promotion, discipline, and termination, are based solely on an individual's qualifications, performance, and business needs. We do not discriminate against anyone on the basis of their race, color, religion, marital status, age, national origin, ancestry, physical or mental disability, medical condition, pregnancy, genetic information, gender, sexual orientation, gender identity or expression, veteran status, or any other protected status under federal, state, or local law.
👉🏻 Remote
👉🏻 Full time
🌐 Europe, Asia

56 days ago

Senior Blockchain Developer - Web3 and Smart Contract experts
Playmate
Welcome to Playmate, your trusted partner in creating stunning, functional, and user-friendly websites that drive results. With a passion for innovation and a commitment to excellence, we are here to transform your online presence and help you achieve your digital goals.The RoleYou Will Be Responsible For Writing well-designed, testable and efficient code. Gathering and evaluating user feedback. Working as a part of a dynamic team to deliver winning products. Providing code documentation and other inputs to technical documents. Supporting continuous improvement by investigating alternatives and new technologies and presenting these for architectural review. Troubleshooting and debugging to optimise performance. Leading the design, creation, and implementation of a suite of software. Building a strong blockchain product offering. Ideal Profile You possess a Degree/Diploma in Computer Science, Engineering or related field. You have at least 3 year experience, ideally within a Software Architect or Software Engineer role. You have working knowledge of Web3, Solidity, Smart contract, Crypto and Ethereum You are highly goal driven and work well in fast paced environments You possess strong analytical skills and are comfortable dealing with numerical data You are a self-starter and demonstrate a high level of resilience What's on Offer? Work alongside & learn from best in class talent Flexible working options Attractive salary & benefits   The interview process     Coding test. Meet with CTO Final interview.     Salary     First 3 months: 12k - 16k USD 3+ months: 16k - 20k USD
👉🏻 Remote
👉🏻 Full time
💰 $16k - $20k /month
🌐 Worldwide

78 days ago

People and Culture Partner
Parity
Parity is one of the world's most experienced core blockchain infrastructure companies, having built and pioneered some of the most advanced technologies in the blockchain sector. Parity was founded by Dr. Gavin Wood, co-founder and former CTO of Ethereum, the primary engineer behind the Ethereum Virtual Machine (EVM), inventor of the Solidity programming language, and primary author of the Ethereum Yellowpaper. Based in Berlin, London, and Lisbon, Parity has built clients for Ethereum, Bitcoin, and Zcash and has pioneered a completely new, next-generation blockchain protocol with Polkadot and the framework it’s built with, Substrate. Parity builds the open-source technologies needed to power an unstoppable, decentralised web—known as Web3—and helps developers and organisations implement and build upon the Web3 tech stack. With a remote-first, global team, Parity is building open-source technologies for developers and organisations to implement and build upon. Our Web3 tech stack includes Polkadot, Substrate, and Kusama. People in our collective are: Highly motivated to contribute to Parity’s mission and be part of something bigger Excited to work on projects that are groundbreaking and complex Autonomous workers that self-initiate, but also collaborate well with others Taking maximum accountability and having minimum ego at work Comfortable with chaos and adapting to the ever-changing Web3 space Continuously educating themselves about Parity and the wider ecosystem About the team: We are a small, curious, tight knit People Partner team working independently within a larger People team. We have had an exciting and transformative year setting up levelling within the organisation, revamping our compensation structure and implementing a performance review process. In 2025 we have similarly big plans and want to work on our learning & development offering, improving our onboarding & offboarding experience and making Parity a more inclusive space to work. About the position: Be a strategic partner and advisor to team leads on various people topics including employee relations, performance management, conflict resolution, compensation  Coach managers on applying best practices to drive performance and team development Own, collaborate and deliver people & culture projects such as onboarding, learning and development, and offboarding Support organisational change and engagement aligned with the company's strategic objectives. Optimise processes to improve internal team operations and the overall employee experience Collaborate with other support teams such as Finance, People Operations, Talent, Communications  and Operations About you: Excellent interpersonal and communication skills, with the ability to influence and build strong relationships at all levels. Excellent problem-solving skills  Ability to leverage data and metrics to drive data-based decision making. Experience working either as a people partner, people ops or a similar role within a people function Collaborative and motivated to work closely with other teams. Practical knowledge of employee labour laws in either one or more of these jurisdictions: Germany, UK, Switzerland or Portugal   About working for us: Competitive remuneration packages based on iterative market research, including tokens (where legally possible) “Future of work” environment that’s remote-first and self-initiating with flexible hours Team mates that are genuinely excited about their impact and projects Access to the brightest minds in this space to learn about Web3 and develop your skills and knowledge while on the job Becoming part of the wider ecosystem (career and networking opportunities) Team and company-wide retreats Work laptop   Those joining our collective as an employee in Germany, Portugal, and the U.K. also enjoy benefits such as health care, parental leave, PTO (28 days per year) and local team events Parity is an Equal Opportunity Employer. We welcome diversity in our global team and care about everyone in our collective feeling included and welcome.   View our Applicant Notice to see how we use your data. Is this position not quite your match? Browse our other open roles.
👉🏻 Remote
👉🏻 Full time
💰 competitive remuneration packages including tokens
🌐 UK, Germany, Portugal

83 days ago

Senior Smart Contract Engineer
Ondo Finance
About the CompanyHi, we're Ondo Finance. Our mission is to provide institutional-grade, blockchain-enabled investment products and services. We have both a technology arm that develops decentralized finance technology, and an asset management arm that creates and manages tokenized funds. We were the first company to tokenize exposure to US Treasuries, and have since expanded into several other assets. We are also focused on incubating protocols that can support both tokenized real-world assets and traditional crypto.Founded by folks from Goldman Sachs Digital Assets Team, we’re backed by some of the best investors in the world including Founders Fund, Coinbase Ventures, Pantera Capital, Tiger Global, and more. We are currently the leaders in the space in terms of AUM and are well capitalized to continue growing the firm. We're fully remote, with team members across the U.S.About the RoleAs a Smart Contract Engineer at Ondo, you will be at the forefront of developing and optimizing smart contracts that power Real World Asset (RWA) tokenization. You will design and implement secure, efficient, and scalable smart contract solutions across many blockchain ecosystems.In this role, you will collaborate with cross-functional teams, including product, legal, and compliance, to ensure the contracts are not only technically sound but also aligned with regulatory standards. You’ll tackle complex challenges around asset tokenization, security, novel token bridging solutions, novel DeFi protocols, and DeFi interoperability. You will play a pivotal role in expanding Ondo’s suite of products and paving the way for large-scale blockchain adoption by traditional financial institutions.This is a unique opportunity to help shape the future of finance by creating smart contract solutions that bring real-world assets on-chain, driving innovation and transforming financial markets.Responsibilities•Smart Contract and Protocol Development: Drive the development of new chain deployments, novel DeFi interoperability and bridging solutions, and DeFi protocols for Ondo Finance’s ever-evolving product suite.•Technical Leadership: Serve as a tech lead and subject matter expert for blockchain projects, guiding the engineering team in delivering high-impact, scalable solutions while making sound technical decisions that align with long-term goals.Requirements•Based in PT, MT, CT, or ET time zones.•Excellent technical and non-technical communication skills, verbal and written.•Bachelor's degree in Computer Science, Engineering, or a related technical field.•5+ years of software engineering experience.•Minimum of 3+ years of experience working in blockchain engineering, ideally coming from another Defi Protocol live on multiple chains.•A strong competency with Solidity and other non-EVM smart contract languages.•Proven results in building and scaling a Defi protocol.•Strong technical grasp and excellent judgment on task prioritizations.•Strong emphasis on understanding the “why” behind requirements and commitment defining the “minimum scope”.What we offer:•Competitive compensation including salary, future token rights, and/or equity (according to your preferences) — we're well-funded and believe that great talent deserves great compensation.•Full benefits (medical, vision, and dental) and flexible vacation policy (PTO).•Small remote-first team across many countries — you'll be an early team member helping shape our vision, culture, and design practices.•A+ colleagues — our team includes alumni from Goldman Sachs Digital Assets, SpaceX, AWS, DeFi protocols like BadgerDAO, private equity funds, hedge funds, and various VC-backed startups.•Best-in-class investors — we are proud to be backed by leading crypto experts (incl. founders of Aave, Quantstamp, and Anchorage) and funds (incl. Pantera, Genesis, DCG, Coin Fund, and CMS).
👉🏻 Remote
👉🏻 Full time
💰 competitive compensation including salary, future token rights, and/or equity.
🌐 USA

92 days ago

DevOps/SRE Team Lead
Parity
About Us Parity is one of the world's most experienced core blockchain infrastructure companies, having built and pioneered some of the most advanced technologies in the blockchain sector. Parity was founded by Dr. Gavin Wood, co-founder and former CTO of Ethereum, the primary engineer behind the Ethereum Virtual Machine (EVM), inventor of the Solidity programming language, and primary author of the Ethereum Yellowpaper. People in Our Collective Are Highly motivated to contribute to Parity’s mission and be part of something bigger Excited to work on projects that are groundbreaking and complex Autonomous workers that self-initiate, but also collaborate well with others Taking maximum accountability and having minimum ego at work Comfortable with chaos and adapting to the ever-changing Web3 space Continuously educating themselves about Parity and the wider ecosystem About the Team The Parity DevOps team is part of the Parity Infrastructure & Data department, made of more than 20 people. We are remote-first, but can also work from offices in Berlin, Lisbon, and London About the Position As the DevOps/SRE Team Lead, you will lead a team of 5 DevOps/SRE engineers responsible for maintaining the infrastructure and tools that support the development of Parity’s Polkadot SDK. Within the Product Engineering department, you will collaborate closely with cross-functional teams to ensure the reliability, scalability, and security of our systems. Your leadership and expertise will play a crucial role in advancing automation, enhancing efficiency, and optimising the performance of our entire technology stack. Lead a team of DevOps engineers, providing guidance, mentorship, and support Define and implement best practices for infrastructure automation, continuous delivery and cloud operations Provide strategic direction and contribute to the overall technology roadmap Drive the adoption of DevOps culture, practices, and tools across the organisation Collaborate with software development teams to streamline the build, deployment, and release processes Establish and maintain robust monitoring, alerting, and logging systems to ensure system reliability and availability Continuously evaluate and implement new technologies and tools to improve efficiency and productivity Liaise with stakeholders to gather requirements, prioritise projects, and communicate progress About You Strong leadership and team management skills, with the ability to inspire and motivate others Strong understanding of containerization technologies such as Docker and orchestration tools like Kubernetes Experience with multiple cloud providers such as AWS, GCP, Azure, DigitalOcean, OVH, Scaleway, etc. Experience leveraging Infrastructure as Code (eg. Terraform, Ansible) and GitOps (eg. ArgoCD, FluxCD) tooling. Expertise in Linux-based systems Proven experience managing infrastructure teams, and  overseeing large scalable, resilient and observable systems Strong communication, collaboration, and interpersonal skills About Working for Us Competitive remuneration packages based on iterative market research, including tokens (where legally possible) “Future of work” environment that’s remote-first and self-initiating with flexible hours Team mates that are genuinely excited about their impact and projects Access to the brightest minds in this space to learn about Web3 and develop your skills and knowledge while on the job Becoming part of the wider ecosystem (career and networking opportunities) Team and company-wide retreats Work laptop Opportunity to relocate to Germany or Portugal (with visa sponsorship) Those joining our collective as an employee in Germany, Portugal, and the UK, also enjoy benefits such as healthcare, parental leave, PTO (28 days per year) and local team events. Parity is an Equal Opportunity Employer. We welcome diversity in our global team and care about everyone in our collective feeling included and welcome. View our Applicant Notice to see how we use your data. Is this position not quite your match? Browse our other open roles.
👉🏻 Remote
👉🏻 Full time
💰 competitive remuneration packages including tokens
🌐 UK, Germany, Portugal

100 days ago

Senior Business Intelligence Engineer
Proxify
The Role: We are looking for a Senior Business Intelligence Engineer for one of our clients. You are a perfect candidate if you are growth-oriented, you love what you do, and you enjoy working on new ideas to develop exciting products. What we’re looking for: 5+ years of professional experience in Business Intelligence development or data engineering roles. Expertise in designing and building solutions using Microsoft Power BI. Proven track record of working with large datasets and complex SQL queries. Proficiency in SQL, including advanced query writing, stored procedures, and performance tuning. Strong experience with data modeling, Power Query, DAX, and Power BI service administration. Familiarity with database platforms like SQL Server, Azure SQL Database, or PostgreSQL. Experience with ETL tools and processes (e.g., SSIS, Azure Data Factory, or similar). Knowledge of data warehouse design principles (e.g., star schema, dimensional modeling). Nice-to-have skills: Experience with Azure data tools (e.g., Azure Data Lake, Azure Synapse Analytics). Familiarity with version control tools like Git. Knowledge of scripting languages such as Python for data processing. Microsoft certifications in Power BI or SQL Server. Responsibilities:   Design and build interactive dashboards and reports in Microsoft Power BI to meet business requirements. Implement data modeling, calculated columns, and DAX measures for optimized reporting solutions. Develop scalable, reusable Power BI templates and reports for enterprise-wide use. Write complex SQL queries, stored procedures, and scripts for ETL processes and data manipulation. Design and maintain efficient data pipelines and workflows to integrate, clean, and transform data from multiple sources. Optimize database queries and ensure high performance in large datasets. Design and implement data warehouse solutions and schemas to support BI requirements. Integrate data from diverse sources such as relational databases, cloud-based platforms, APIs, and flat files. Collaborate with the data engineering team to design and enhance ETL workflows. Monitor and optimize the performance of Power BI reports and underlying data models. Troubleshoot and resolve performance bottlenecks in SQL queries and BI tools. Ensure data accuracy, integrity, and reliability across BI platforms.    What we offer:   Get paid, not played No more unreliable clients. Enjoy on-time monthly payments with flexible withdrawal options. Predictable project hours Enjoy a harmonious work-life balance with consistent 8-hour working days with clients. Flex days, so you can recharge Enjoy up to 24 flex days off per year without losing pay, for full-time positions found through Proxify. Career-accelerating positions at cutting-edge companies Discover exclusive long-term remote positions at the world's most exciting companies. Hand-picked opportunities just for you Skip the typical recruitment roadblocks and biases with personally matched positions. One seamless process, multiple opportunities A one-time contracting process for endless opportunities, with no extra assessments. Compensation Enjoy the same pay, every month with positions landed through Proxify.
👉🏻 Remote
👉🏻 Full time
💰 $40k - $80k
🌐 CET +/- 3 HOURS

116 days ago

Applied Cryptographer
OpenZeppelin
About us Founded in 2015 with the mission to protect the open economy, OpenZeppelin is the world leader in securing blockchain applications and smart contracts.  Its bedrock open source Contract Libraries are a public good and industry standard for smart contract development. OpenZeppelin’s professional expertise, unified with the Defender developer security platform, integrates through clients’ development lifecycles, so teams can plan, code, audit, deploy and operate projects faster and more safely. 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 ZK Practice The Zero-Knowledge Practice at OpenZeppelin is responsible for the execution and delivery of cryptography audits and circuit audits for the world’s leading web3 organizations and protocols. The team currently consists of security researchers, applied cryptographers and theoretical cryptographers who perform audits and advisory with direct client contact and conduct independent zk-research that culminates in academic publications, blog posts and conference talks. We are now looking to expand this team by one additional applied cryptographer to increase the overall capacity and expand the diversity of academic backgrounds. What you'll be doing Analyzing the security of circuit construction and cryptographic components in support of audits of succinct and/or zero-knowledge proofs for blockchain protocols. Researching new mathematical approaches based on novel cryptography research available in academia. Teaming up with other auditors to review zero-knowledge circuits line by line to try to hack them. Educating the community about zero-knowledge technology and relevant security considerations through series of blog posts. Leading research and contributing to OpenZeppelin’s projects and knowledge bases. Training new team members in zero-knowledge technology. Speaking at ZK conferences around the world. You have PhD or equivalent experience in cryptography, computer science, mathematics, engineering, or related field. In depth algorithmical and mathematical understanding of zero-knowledge proof systems and related cryptographic primitives. Experience implementing cryptographic components in one or more of: Rust, Go/Golang, Solidity, Circom, ZoKrates, Cairo. Proven track record of achieving significant results as demonstrated by grants, fellowships, patents. Publications at leading workshops or conferences at any of the IACR flagship conferences (EUROCRYPT, CRYPTO, ASIACRYPT, etc.). Intellectual curiosity and the capability to learn complex topics independently. An advanced English level and great communication skills (oral and written). The ability to work independently, with minimal supervision. Passion about the blockchain space and decentralization. Ability to work collaboratively in a distributed team. Nice to have Experience analyzing the security of blockchain protocols. Experience building or analyzing STARK-based and/or FRI-based systems. Experience contributing to a major zk library (e.g. Halo2). In-depth knowledge of implementations of elliptic curve cryptography. Experience developing applications using PLONK or recursive zk-proofs. Experience working with L2 scaling protocols or privacy applications Experience participating in zk-themed CTF competitions. Logistics Our interview process takes place on Zoom and tends to consist of the following stages: Recruiter call (45 minutes) Hiring Manager call (1 hour) Team member interview (1 hour) Paid work test (Lasting multiple days) 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 Company in-person gatherings in different locations around the world 😎 Fully remote work 🌎 Flexible time off 🏝 Paid parental leave for primary or second caregiver 💙 One time work-from-home equipment stipend of up to $500 USD 🪑 Co-working (up to $250/month) 👩‍💻 Medical coverage Annual Learning & Development budget 🧠 Referral program Work with a global team in a fast-growing industry 🚀 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!  
👉🏻 Remote
👉🏻 Full time
🌐 USA

116 days ago

Senior Engineer, Developer Relations
Sui foundation
The Sui Foundation exists to support the development, growth and adoption of the Sui network. Sui is the first permissionless Layer 1 blockchain designed from the ground up to enable creators and developers to build unique Web3 experiences from gaming to finance. The Sui Foundation is committed to three decentralization principles; Embrace transparency and level the playing field, Communicate openly to build a culture of trust, and Engage directly with the community.Mission:Onboard the next billion users to web3 by supporting the advancement and global adoption of the Sui blockchain.Vision:To create a better world that unlocks opportunities through universal access and individual ownership.The Role:The Developer Relations team engages with the developer community online and in person to provide expert help and guidance in building next-generation Web3 applications on Sui. By talking to the community and understanding developer pain points, the team creates a rapid and positive feedback loop between the developer community and the protocol.As an engineer on the Developer Relations team, you will have or develop a technical understanding of the Sui protocol as well as a proficiency in writing Sui Move. You will have or develop an understanding of the Sui ecosystem by using developer tooling and testing apps. You will use your newly-developed knowledge to collaborate and connect with developers, enabling them to build and innovate on Sui.You will use your excellent communication skills to explain complex concepts to a wide variety of audiences, such as Web2 developers and Solidity developers, and through a variety of mediums, including documentation, tutorials and workshops.As an experienced engineer, you will be able to operate on your initiative, prioritize work streams based on impact, and manage cross-functional teams.This role is an exciting opportunity for someone who enjoys high-impact, complex, and multi-disciplinary programs. Experience of Move (or Rust) is a positive that will enable the role to be picked up quickly, but fast learners are also welcome!Responsibilities:Understand the community's goals, and provide technical expertise and direction to help the developers navigate their journey of building on Sui.Create and own the feedback loop between the community and the network.Translate developer feedback into meaningful product insights for future product development.Develop and deliver remote and in-person training sessions and workshops for new and existing Sui developers.Requirements:Based in APAC.7+ years of Software Engineering or combination of Software and DevRel Engineering experience.Strong written and verbal communication skills.Strong interest in Web3.Good understanding of developer profiles, developer markets and trends within Europe, gained either through developer-facing work experience or personal intuition.Nice to Have:Prior DevRel experience, or related developer-facing function (e.g. Solutions Engineering).Experience with blockchain, cryptography and/or Web3 engineering.Experience with Move and/or Rust programming language(s).Our team is 100% remote and we are hiring across the world. Here at the Sui Foundation, you’ll be joining a world-class team with tremendous growth potential as we bring the next billion users to web3.
👉🏻 Remote
👉🏻 Full time
🌐 APAC

116 days ago

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