Blockchain Engineer

Blockchain Engineer

Tandavix llc

New York, NY

Role: Blockchain Engineer Location: NY/NJ Qualifications / Experience $120k/ann Bachelor``s degree in Computer Science, Engineering, or a related discipline; MS is a plus 8+ years of overall software engineering experience, with a strong backend development foundation 2 to 4 years of hands-on experience in Web3 and blockchain application development, including smart contract development and blockchain protocol integration 3 to 5 years of experience with backend development using Java/Spring, No

Blockchain Game Alliance is hiring a Blockchain / Web3 Full Stack Engineer to design and build core blockchain infrastructure powering Web3 gaming products, decentralized economies, and NFT systems. You will work with smart contracts, blockchain integrations, and backend systems that support scalable gaming platforms. The role involves building and maintaining secure on-chain systems including NFTs, token mechanics, marketplaces, staking systems, and wallet integrations. We are looking for engineers with strong experience in Solidity or Rust, EVM-based development, smart contract architecture, and Web3 tooling such as Hardhat, Foundry, Ethers.js, or similar frameworks. Experience with blockchain security, gas optimization, and production deployments is essential. You will collaborate closely with full stack engineers, product teams, and ecosystem partners to build reliable, high-performance decentralized systems across multiple blockchain networks such as Ethereum, Polygon, or Solana. The ideal candidate is highly technical, security-focused, and experienced in building production-grade smart contract systems and decentralized applications. Location: Remote Duration: 10 Months Type: Full-time or Part-time Compensation: $14k–$18k/month (Full-time) $100–$130/hour (Contract / Part-time) The Blockchain Game Alliance (BGA) is a leading global organization dedicated to promoting blockchain technology within the gaming industry. Founded to support innovation, collaboration, and education across Web3 gaming ecosystems, BGA brings together game studios, blockchain companies, infrastructure providers, creators, and community leaders shaping the future of digital entertainment.

Velixus Labs is building the next generation of AI, blockchain, and Web3 infrastructure. We help organizations leverage decentralized technologies to create more secure, transparent, and intelligent digital products. We're a team of builders who enjoy solving difficult technical problems and turning ambitious ideas into production systems used by real people. We're looking for a Lead Blockchain Engineer to help architect and build the blockchain products that power our clients' and partners' ecosystems. You'll work closely with product leaders, designers, and engineers to develop smart contracts, decentralized applications, and blockchain infrastructure that are secure, scalable, and ready for production. This is a hands-on engineering role for someone who enjoys writing code, making architectural decisions, and taking ownership of products from concept to deployment. Design and develop smart contracts and blockchain-based applications. Build backend services and integrations that interact with blockchain networks. Participate in architecture discussions and help shape technical direction. Review code, improve engineering standards, and contribute to security best practices. Work closely with product and design teams to turn ideas into working products. Identify performance, scalability, and reliability improvements across the stack. Mentor other engineers and contribute to a strong engineering culture. Stay current with developments across blockchain, Web3, and decentralized infrastructure. Strong software engineering fundamentals and experience building production systems. Professional experience developing blockchain applications or smart contracts. Deep understanding of Ethereum, EVM-based networks, or similar blockchain ecosystems. Experience with Solidity and modern Web3 development tools. Ability to make sound technical decisions and work independently. A practical approach to building secure, maintainable software. Strong communication skills and a collaborative mindset.

Remote | Full-Time | $220,000–$260,000 USD Are you passionate about blockchain technology and excited by the opportunity to build products that can transform industries? We're looking for a Senior Blockchain Developer to join our growing team and help create next-generation solutions across Web3 , digital assets, tokenized real estate, decentralized finance ( DeFi ), and smart contract infrastructure. This is more than just another engineering role. You'll have the opportunity to shape technical strategy, influence product direction, and work on innovative projects that push the boundaries of blockchain technology. If you're a builder, problem solver, and blockchain enthusiast who thrives in a fast-paced environment, we'd love to hear from you. Design, develop, test, and deploy secure smart contracts on Ethereum and EVM-compatible blockchains. Build and maintain scalable decentralized applications (dApps) and Web3 platforms. Develop backend services, APIs, and blockchain integrations using Node.js and TypeScript. Collaborate with product managers, designers, and engineers to deliver high-quality features and products. Architect blockchain solutions that prioritize scalability, security, and performance. Conduct code reviews and provide technical mentorship to junior and mid-level developers. Integrate wallets, token standards, payment systems, and third-party blockchain services. Monitor, troubleshoot, and optimize production blockchain applications. Implement security best practices and participate in smart contract audits and risk assessments. Improve development workflows, CI/CD pipelines, testing frameworks, and deployment processes. Research emerging blockchain technologies and evaluate new tools, protocols, and frameworks. Contribute to technical documentation, architecture planning, and engineering standards. Participate in technical discussions and help drive long-term product and technology strategy. Work closely with cross-functional teams to ensure successful product launches and ongoing improvements. 5+ years of professional software engineering experience. 3+ years of hands-on blockchain development experience. Strong expertise in Solidity and Ethereum smart contract development. Experience building production-grade applications using React, TypeScript, and Node.js. Strong understanding of blockchain architecture, decentralized systems, and Web3 technologies. Experience with ethers .js, viem , wagmi , or similar Web3 libraries. Knowledge of token standards including ERC-20, ERC-721, and ERC-1155. Experience with REST APIs, GraphQL, databases, and cloud infrastructure. Strong understanding of software design patterns and scalable architecture. Excellent problem-solving, communication, and collaboration skills. Experience building DeFi , NFT , RWA, or tokenization platforms. Familiarity with Layer 2 scaling solutions and cross-chain technologies. Experience conducting or supporting smart contract security audits. Knowledge of AWS, Docker, Kubernetes, and infrastructure automation. Experience working in startups or high-growth technology companies. Open-source contributions within the blockchain ecosystem. Please contact out through the work email - [email protected] if you're interested...

Senior Blockchain Engineer

Bright Vision Technologies

Apex, NC 27502

Bright Vision Technologies is seeking an experienced Senior Blockchain Engineer to join our growing engineering team and build secure, scalable blockchain solutions for enterprise applications. This is a fantastic opportunity to join an established and well-respected organization offering tremendous career growth potential. Job Title: Senior Blockchain Engineer Location: 100% Remote (U.S.) Employment Type: Full-time | Direct W2 Salary: $140,000–$200,000 per year Experience: 6+ Years Work Authorization: U.S. Citizens, Green Card Holders, EAD Holders, and H-1B transfer candidates are welcome to apply. We are unable to sponsor new H-1B visa petitions for this position. Responsibilities Design, develop, and deploy secure smart contracts using Solidity. Build scalable blockchain applications (dApps) and backend services. Integrate enterprise systems with Ethereum, Hyperledger Fabric, Polygon, Avalanche, or other blockchain platforms. Develop REST APIs, GraphQL services, and blockchain integrations. Implement wallet integrations, tokenization, digital identity, and transaction processing solutions. Optimize blockchain performance, security, and scalability. Collaborate with architects, DevOps, and cross-functional teams throughout the software development lifecycle. Required Qualifications 6+ years of software development experience. 3+ years of hands-on blockchain development experience. Strong expertise with Solidity, Ethereum, and EVM-compatible networks. Experience with Node.js, Java, or .NET Core. Experience building dApps using React, Angular, or Vue.js. Knowledge of ERC-20, ERC-721, ERC-1155 token standards. Experience with REST APIs, GraphQL, SQL/NoSQL databases, Git, CI/CD, Azure, or AWS. Strong understanding of blockchain architecture, cryptography, distributed systems, and Agile development. Preferred Skills Hyperledger Fabric Layer-2 solutions (Polygon, Arbitrum, Optimism) Hardhat, Foundry, Truffle, Remix Docker, Kubernetes, Terraform Blockchain security and smart contract auditing Apply Now For immediate consideration, send your resume to jaya@bvteck.com or call 908-505-3545 Bright Vision Technologies is an Equal Opportunity Employer. Equal Employment Opportunity (EEO) Statement Bright Vision Technologies (BV Teck) is committed to equal employment opportunity (EEO) for all employees and applicants without regard to race, color, religion, sex, sexual orientation, gender identity or expression, national origin, age, genetic information, disability, veteran status, or any other protected status as defined by applicable federal, state, or local laws. This commitment extends to all aspects of employment, including recruitment, hiring, training, compensation, promotion, transfer, leaves of absence, termination, layoffs, and recall. BV Teck expressly prohibits any form of workplace harassment or discrimination. Any improper interference with employees' ability to perform their job duties may result in disciplinary action up to and including termination of employment.

Senior Blockchain Engineer

Bright Vision Technologies

Apex, NC 27502

Bright Vision Technologies is seeking an experienced Senior Blockchain Engineer to join our growing engineering team and build secure, scalable blockchain solutions for enterprise applications. This is a fantastic opportunity to join an established and well-respected organization offering tremendous career growth potential. Job Title: Senior Blockchain Engineer Location: 100% Remote (U.S.) Employment Type: Full-time | Direct W2 Salary: $140,000–$200,000 per year Experience: 6+ Years Work Authorization: U.S. Citizens, Green Card Holders, EAD Holders, and H-1B transfer candidates are welcome to apply. We are unable to sponsor new H-1B visa petitions for this position. Responsibilities Design, develop, and deploy secure smart contracts using Solidity. Build scalable blockchain applications (dApps) and backend services. Integrate enterprise systems with Ethereum, Hyperledger Fabric, Polygon, Avalanche, or other blockchain platforms. Develop REST APIs, GraphQL services, and blockchain integrations. Implement wallet integrations, tokenization, digital identity, and transaction processing solutions. Optimize blockchain performance, security, and scalability. Collaborate with architects, DevOps, and cross-functional teams throughout the software development lifecycle. Required Qualifications 6+ years of software development experience. 3+ years of hands-on blockchain development experience. Strong expertise with Solidity, Ethereum, and EVM-compatible networks. Experience with Node.js, Java, or .NET Core. Experience building dApps using React, Angular, or Vue.js. Knowledge of ERC-20, ERC-721, ERC-1155 token standards. Experience with REST APIs, GraphQL, SQL/NoSQL databases, Git, CI/CD, Azure, or AWS. Strong understanding of blockchain architecture, cryptography, distributed systems, and Agile development. Preferred Skills Hyperledger Fabric Layer-2 solutions (Polygon, Arbitrum, Optimism) Hardhat, Foundry, Truffle, Remix Docker, Kubernetes, Terraform Blockchain security and smart contract auditing Apply Now For immediate consideration, send your resume to jaya@bvteck.com or call 908-505-3545 Bright Vision Technologies is an Equal Opportunity Employer. Equal Employment Opportunity (EEO) Statement Bright Vision Technologies (BV Teck) is committed to equal employment opportunity (EEO) for all employees and applicants without regard to race, color, religion, sex, sexual orientation, gender identity or expression, national origin, age, genetic information, disability, veteran status, or any other protected status as defined by applicable federal, state, or local laws. This commitment extends to all aspects of employment, including recruitment, hiring, training, compensation, promotion, transfer, leaves of absence, termination, layoffs, and recall. BV Teck expressly prohibits any form of workplace harassment or discrimination. Any improper interference with employees' ability to perform their job duties may result in disciplinary action up to and including termination of employment.

Are you ready to make an impact at DTCC? br> br>Do you want to work on innovative projects, collaborate with a dynamic and supportive team, and receive investment in your professional development? At DTCC, we are at the forefront of innovation in the financial markets. We are committed to helping our employees grow and succeed. We believe that you have the skills and drive to make a real impact. We foster a thriving internal community and are committed to creating a workplace that looks like the world that we serve. br> br>DTCC Digital Assets is at the forefront of driving institutional adoption of digital assets technology with a steadfast commitment to innovation anchored in security and stability. As the financial services industry s trusted technology partner, we pride ourselves on empowering a globally interconnected and efficient ecosystem. Our mission is to provide secure and compliant infrastructure for digital assets, enabling financial institutions to unlock the full potential of blockchain technology br> br> strong>Pay And Benefits br> br> /strong> ul> li> Competitive compensation, including base pay and annual incentive /li> li> Comprehensive health and life insurance and well-being benefits, based on location /li> li> Pension / Retirement benefits /li> li> Paid Time Off and Personal/Family Care, and other leaves of absence when needed to support your physical, financial, and emotional well-being. /li> li> DTCC offers a flexible/hybrid model of 3 days onsite and 2 days remote (onsite Tuesdays, Wednesdays and a third day unique to each team or employee). br> br> /li> /ul> strong>The Impact You Will Have In This Role br> br> /strong>Being a member of the Digital Assets team, the Senior Rust Smart Contract Engineer will design, develop and maintain production-grade smart contracts for the Stellar blockchain using the Soroban framework and for Solana. The ideal candidate will bring a deep understanding of blockchain technology and smart contract capabilities, along with strong hands-on Rust expertise. You will own smart contract components from design through deployment and ongoing lifecycle management, helping ensure that DTCC s blockchain solutions are secure, efficient, reliable and aligned with the requirements of a regulated financial-services environment. br> br> strong>Your Primary Responsibilities br> br> /strong> ul> li> Design, develop and deploy smart contracts in Rust for Stellar using Soroban and for Solana /li> li> Own smart contract modules from design through deployment and ongoing lifecycle management /li> li> Lead code reviews and contribute to security assessments and audit readiness /li> li> Design and enhance testing strategies, deployment pipelines and reusable contract libraries /li> li> Collaborate cross-functionally to integrate smart contracts with platform and backend services /li> li> Identify, analyze and mitigate smart contract security, reliability and performance risks /li> li> Mentor Associate engineers and promote best practices in Rust and smart contract development /li> li> Participate in incident response and root-cause analysis for smart contract-related issues /li> li> Collaborate with frontend and backend developers to integrate smart contracts with web applications /li> li> Stay current with cryptographic and blockchain advancements to help identify and mitigate potential security threats /li> li> Work closely with product managers and stakeholders to clarify technical requirements and define system architecture /li> li> Share blockchain and smart contract expertise with both technical and nontechnical team members /li> li> Stay current with developments across the blockchain ecosystem and adapt solutions as appropriate br> br> /li> /ul>**NOTE: The Primary Responsibilities of this role are not limited to the details above. ** br> br> strong>Qualifications br> br> /strong> ul> li> Bachelor s degree in Computer Science, Engineering or a related field (preferred), or equivalent practical experience /li> li> 5-7 of professional software engineering experience /li> li> 3+ years of hands-on Rust development experience /li> li> 2+ years of experience developing smart contracts or blockchain-based applications /li> li> Experience developing Rust smart contracts in a production environment /li> li> Strong understanding of blockchain security, distributed systems and cryptographic principles /li> li> Experience with CI/CD pipelines, automated testing and secure software-delivery practices br> br> /li> /ul> strong>Talents Needed For Success br> br> /strong> ul> li> Demonstrated experience performing both manual and automated testing in enterprise software environments /li> li> Experience developing and maintaining automated test frameworks and test suites /li> li> Strong understanding of software development lifecycles, Agile methodologies, and quality engineering practices /li> li> Experience testing REST APIs, web applications, microservices, and distributed systems /li> li> Knowledge of defect tracking, test management, and reporting tools /li> li> Strong analytical, troubleshooting, and problem-solving skills /li> li> Excellent communication and collaboration skills with technical and non-technical stakeholders /li> li> Experience testing blockchain, digital-asset, or distributed-ledger platforms, including smart contracts and on-chain/off-chain transaction workflows /li> li> Experience with permissioned blockchain networks or AppChains; exposure to Hyperledger Besu or comparable enterprise blockchain technology is strongly preferred /li> li> Hands-on experience with modern automation tools such as Playwright, Selenium, Cypress, Postman, or comparable technologies /li> li> Experience working with CI/CD platforms and automated quality gates /li> li> Knowledge of performance, security, and resiliency testing practices br> br> /li> /ul>We offer top class training and development for you to be an asset in our organization! br> br>The salary range is indicative for roles at the same level within DTCC across all US locations. Actual salary is determined based on the role, location, individual experience, skills, and other considerations. We are an equal opportunity employer and value diversity at our company. We do not discriminate on the basis of race, religion, color, national origin, sex, gender, gender expression, sexual orientation, age, marital status, veteran status, or disability status. We will ensure that individuals with disabilities are provided reasonable accommodation to participate in the job application or interview process, to perform essential job functions, and to receive other benefits and privileges of employment. Please contact us to request accommodation.When applying, mention the word CANDYSHOP to show you read the job post completely. This is a beta feature to avoid spam applicants. Companies can search these words to find applicants that read this and see they are human RMTY4LjE0NC44NS4xMzEM

strong>About MoonPay br> br> /strong>MoonPay is for builders with something to prove. br> br>This isn t a work on cool crypto stuff company. It s a high-standards, high-velocity, high-accountability company building the operating system for value movement. If the internet moves information, we move value: crypto, stablecoins, tokenized assets, and whatever comes next. Four offerings make that real: fund, tokenize, trade, and spend. 30M+ customers and 500+ ecosystem partners run on us. Licensed in the U.S. Regulated across the UK, EU, Canada, and Australia. br> br>AI is the default operating mode here. It s woven into every role, and we expect you to use it daily. It handles the manual work so you can deliver on what actually matters. br> br>You ll thrive here if outcomes excite you more than process, if impact motivates you more than titles, and if you want hard problems, real ownership, and teammates who love winning, building, and doing it together. br> br>The bar is high. The pace is real. We re building for what s next, for humans and agents. br> br> strong>Recent Recognition br> br> /strong>Forbes America s Best Startup Employers 2026 . 2nd in Crypto Services on Fortune s inaugural Crypto 100, br> br>The Sunday Times Best Places to Work two years running. br> br> strong>Research has shown that women are less likely than men to apply for this role if they do not have experience in 100% of these areas. Please know that this list is indicative, and that we would still love to hear from you even if you feel that you are only a 75% match. Skills can be learned, diversity cannot. br> br> /strong>______________________________________________________________________________________________________ br> br> strong>What You Will Do br> br> /strong> strong>Transaction Infrastructure at Scale br> br> /strong> ul> li>Design and improve high-volume transaction broadcasting pipelines /li> li>Manage transaction lifecycle /li> li>Detect, retry, rebroadcast, and safely recover stuck transactions br> br> /li> /ul> strong>Wallet & Lifecycle Management br> br> /strong> ul> li>Contribute to wallet infrastructure and automation systems /li> li>Implement safe parallel transaction handling /li> li>Improve monitoring, observability, and operational guardrails /li> li>Design systems with financial correctness and reconciliation and auditability in mind br> br> /li> /ul> strong>Cross-Chain & DeFi Integrations br> br> /strong> ul> li>Build infrastructure supporting cross chain and multi step flows (fiat to on-chain and vice versa) /li> li>Handle non-atomic multi-step journeys across chains /li> li>Design state machines and recovery strategies for partial failure scenarios /li> li>Support routing mechanics and swap execution considerations such as price impact, liquidity changes, including MEV awareness /li> li>Build reliable off-chain services that interact with on-chain contracts br> br> /li> /ul> strong>End-to-End Engineering Ownership br> br> /strong> ul> li>Participate in estimation, planning, and execution of projects, features, and integrations /li> li>Develop and maintain thoroughly tested, high-quality, and performant code /li> li>Collaborate closely with Product Managers to design scalable implementation strategies /li> li>Contribute to reliable, maintainable systems that evolve with product needs /li> li>Participate in incident response and post-mortems /li> li>Improve reliability, alerting, and system resilience /li> li>Continuously evolve infrastructure to support growing volume and complexity br> br> /li> /ul> strong>About You br> br> /strong> strong>Must-Have br> br> /strong> ul> li>Strong backend/platform engineering fundamentals /li> li>Experience operating production systems with real uptime requirements /li> li>Hands-on experience interacting with live blockchain networks in production /li> li>Clear understanding of transaction lifecycle in at least 1 Blockchain and failure recovery /li> li>You think in failure modes, not just happy paths br> br> /li> /ul> strong>Strong Signals br> br> /strong> ul> li>You can explain a real production incident end-to-end /li> li>Experience with at least 1 wallet infrastructure (Eth, Bitcoin, Solana) or custody systems /li> li>Awareness of MEV, slippages, pricing impact and swap execution risks /li> li>Experience with high-throughput or financial systems br> br> /li> /ul> strong>Bonus points br> br> /strong> ul> li>Experience working at exchanges, custody providers, wallet infrastructure teams, or high-volume DeFi platforms /li> li>Familiarity with UTXO-based chains (e.g., Bitcoin), including coin selection and fee bumping strategies (RBF / CPFP) /li> li>Experience designing cross-chain or multi-step transaction orchestration systems /li> li>Familiarity with blockchain indexing or event ingestion pipelines /li> li>Understanding of common token standards (ERC-20, SPL) and interacting with smart contracts from backend services br> br> /li> /ul>Salary Bands: $150,000 - $210,000 br> br> strong>______________________________________________________________________________________________________ br> br> /strong> strong>Benefits & Perks 💡 br> br> /strong> ul> li>💰 Competitive salary package /li> li>🤝 Equity package: financial freedom starts with our employees, so all employees have ownership at MoonPay /li> li>📈 Pay-for-performance equity bonus: those who drive outsized outcomes receive outsized rewards /li> li>🚀 Moonshot award: we honor exceptional impact. 10 employees twice a year, each earning a $250,000 equity grant /li> li>📊Pension: employer contributions from day one /li> li>🎁Employee referral program: refer great people, earn 10K in USDC /li> li>🏝 Flexible Time Off: choose when to work and when to switch off /li> li>🎂 Birthday leave: take the day off to celebrate you /li> li>🍼 Enhanced parental leave: more time with family, no second thought /li> li>🌍 Hybrid working schedule: work fully remotely or from your nearest Moonbase /li> li>🚆 Commuter benefits: public transport to and from the office /li> li>🩺 Private healthcare benefits: to protect you and your loved ones /li> li>🧘 Wellhub wellness membership: access to gyms, studios, classes, and wellness apps in one membership /li> li>🤖 Unlimited enterprise access to the latest AI tools: Claude, ChatGPT, Gemini and whatever s next /li> li>🍱 Lunch credit: meals covered on the days you re in the office /li> li>🪑 Home office setup allowance: build the home office of your dreams /li> li>👛 Remote working allowance: those working fully remotely get a little extra for utilities /li> li>🌕 Monthly product budget and zero-fee crypto transactions /li> li>📚 $1,000 Annual training budget: we support your learning journey /li> li>🎯 High Potential Program: structured development, mentorship, and stretch opportunities /li> li>✈️ Regular remote company offsites: high-impact in-person sessions and hackathons /li> li>🚲 (Ireland) Cycle to Work scheme: tax-efficient bike, gear, and safety kit /li> li>🔌 (UK) EV Salary Sacrifice: lease an electric vehicle through pre-tax salary /li> /ul>When applying, mention the word CANDYSHOP to show you read the job post completely. This is a beta feature to avoid spam applicants. Companies can search these words to find applicants that read this and see they are human RMTY4LjE0NC44NS4xMzEM

Velixus Labs is building the next generation of AI, blockchain, and Web3 infrastructure. We partner with startups, enterprises, and emerging technology leaders to develop secure, scalable, and intelligent digital products powered by decentralized technologies. We're a team of builders who enjoy solving difficult technical challenges and delivering products that create real-world impact. We're looking for a Senior Engineering Manager to lead the delivery of blockchain products and help scale our engineering organization. This role combines technical leadership, people management, and execution. You'll work closely with engineering, product, and business stakeholders to guide teams building smart contracts, decentralized applications, blockchain infrastructure, and supporting platforms. You won't be expected to write production code every day, but you'll be deeply involved in technical decision-making, architecture discussions, hiring, mentoring, and ensuring engineering teams deliver high-quality products. Lead and grow high-performing engineering teams building blockchain and Web3 products. Partner with product and business leaders to define technical strategy and execution plans. Support engineers through mentoring, coaching, performance management, and career development. Drive technical excellence, engineering quality, and operational reliability across projects. Help teams make sound architectural decisions and manage technical tradeoffs. Establish scalable engineering processes that enable teams to move quickly without sacrificing quality. Manage project priorities, resource planning, and delivery expectations. Foster a culture of ownership, accountability, and continuous improvement. Participate in hiring and help build a world-class engineering organization. Experience leading engineering teams and delivering complex software products. Strong background in software engineering and system design. Proven experience working on blockchain, cryptocurrency, or Web3 products. Ability to lead both technical discussions and people-related decisions. Experience building and scaling engineering teams in fast-moving environments. Strong communication skills and the ability to work across technical and non-technical stakeholders. A pragmatic approach to problem-solving and decision-making.

Blockchain Developer / Blockchain Engineer

Jc Corporations

Jersey City, NJ

We`re Hiring: Blockchain Developer Location: Jersey City, NJ Onsite Experience: 5+ Years Looking for a talented Blockchain Developer with strong hands-on experience in Blockchain, Web3, Smart Contracts, and Solidity. Key Skills: Solidity & Smart Contract Development Ethereum / EVM Blockchain Web3.js / Ethers.js JavaScript / TypeScript / Node.js Hardhat / Foundry dApps & Web3 Integrations ERC-20 / ERC-721 / ERC-1155 Smart Contract Security & Gas Optimization DeFi / Layer-2 experience is a plus

Senior Rust Blockchain Engineer

Startale Group

Pittsburgh, PA or Remote

About Us In partnership with SBI Group, we aim to bring the majority of Japanese equities on-chain, creating a secure, transparent, and high-performance trading infrastructure that can support institutional volumes while remaining accessible to retail participants. We are building a next-generation decentralized exchange with a fully on-chain order book. Our system is built with a custom state transition function and consensus layer, purpose-designed for high-performance, low-latency trading. The goal is to deliver a trustless platform that matches the speed and efficiency of traditional trading engines while providing full transparency by running execution as close as possible to the blockchain itself. Position Overview We are looking for a Senior Rust Engineer with strong expertise in system architecture and execution engines. You will be responsible for designing and implementing the CLOB execution layer, including the order book, matching engine, and blockchain client logic. This role is highly technical and requires end-to-end ownership of critical components, from architecture to optimization. While you’ll primarily collaborate with a remote team of experienced engineers, there will occasionally be opportunities to work onsite during offsite sessions to support onboarding and enable more efficient collaboration. Joining at this early stage of development offers a unique opportunity to influence critical technical decisions, achieve career growth, and enjoy competitive compensation. Key Responsibilities Architect and implement the on-chain order book and matching engine in Rust. Design and extend exchange-specific logic (order execution, risk checks, account/state management). Design and develop protocol-level components, such as state transition logic, consensus, validator interaction, and transaction processing pipelines. Implement integration with oracles, bridges, and external data providers, ensuring correctness and resilience in adversarial conditions. Optimize for low-latency execution, concurrency, and gas efficiency. Conduct benchmarking and stress testing to identify and address potential performance/throughput bottlenecks. Develop and maintain a comprehensive suite of unit, integration, and end-to-end tests to ensure code reliability and functionality. Requirements 5+ years of systems programming experience, with 3+ years in Rust. Proven track record building trading platforms, execution engines, or exchanges (DEX or centralized). Contributions to Rust-based L1 protocol projects (e.g., Solana, Cosmos SDK, Substrate). Deep understanding of distributed computing principles, including consensus algorithms, peer-to-peer (P2P) networking, and high-performance data structures. Deep knowledge of decentralized trading models (on-chain order books, AMMs, hybrid architectures). Ability to design and implement complex, production-grade systems independently. Big Bonus Experience with competitive programming or algorithmic problem solving. Expertise in low-latency design, concurrency, and performance optimization.

Senior Blockchain Engineer Digital Assets

cyberThink, Inc.

Southlake, TX

Will consider remote for solid match What This Engineer Will Do: Layer1 Blockchain Integration & Platforms Integrate Client systems with existing Layer1 blockchains (e.g., Ethereumbased or other enterpriserelevant L1s). Evaluate and, where appropriate, contribute to building or extending Layer1 capabilities to meet custody, scalability, or resiliency needs. Understand chainlevel mechanics such as transaction lifecycle, finality, forks, reorgs, and event propagation. Ensure blockchain integrations are reliable under stress conditions and production loads. Blockchain Infrastructure Components Design and build core blockchain infrastructure services, including: Indexers and event processors Block explorers and observability tooling Chain data services and APIs Interoperability and crosschain integration components Ensure blockchain data pipelines are accurate, performant, and auditable. Support operational tooling required for troubleshooting, monitoring, and incident response. Wallet Architecture & Development Contribute to wallet architecture and development, including: Blockchainfacing wallet services Transaction creation, signing workflows, and submission pipelines Integration with custody key management systems (MPC, HSMs, signing services) Ensure wallet implementations cleanly separate protocol logic, security controls, and business rules. Partner closely with custody and security engineers to validate endtoend transaction flows. CustodyRelated Blockchain Workflows Share responsibility for custodyrelated blockchain workflows, including: Onchain transaction execution Event monitoring and reconciliation Chainspecific failure handling and recovery patterns Help define safe patterns for interacting with smart contracts and token standards from custody platforms. Ensure blockchain workflows align with custody policies, approvals, and risk controls. Engineering Rigor & AIAugmented Development Apply modern engineering practices to build reliable, testable, and observable blockchain services. Leverage GenAI and agentic AI tools to accelerate: Protocol analysis Code development and testing Documentation and knowledge sharing Maintain engineering rigor speed without sacrificing correctness or safety. What you have: Required Qualifications: 7+ years of professional software engineering experience. Handson experience building or integrating blockchain or distributed ledger systems. Strong understanding of Layer1 blockchain protocols and transaction lifecycles. Experience building backend services, APIs, and infrastructure components. Proficiency in one or more languages such as Go, Java, Rust, Python, or similar. Ability to work effectively across custody, security, and platform teams. Strongly Preferred: Experience with blockchain indexers, explorers, or chain analytics systems. Familiarity with wallet architecture and blockchain signing workflows. Exposure to crypto custody platforms or securitysensitive financial systems. Strong debugging instincts in distributed, asynchronous environments. Experience using AI tooling to support complex software development. What Success Looks Like: Blockchain integrations are predictable, observable, and resilient. Wallet and transaction pipelines behave correctly across normal and edgecase chain conditions. Custody systems interact with blockchains safely and consistently. Incidents related to blockchain dependencies are well understood and quickly diagnosed. This role establishes strong foundations for scalable digitalasset custody and tokenization platforms.

We are looking for an experienced Blockchain Engineer to contribute to a Web3 developer reputation platform currently under active development. The platform creates verifiable developer profiles from on-chain activity, smart contract deployments, technical contributions, attestations, project history, and other professional evidence. You will work on blockchain architecture, smart contracts, wallet interactions, on-chain data, protocol integrations, security, testing, and deployment. Depending on your background, your work may focus on EVM, Solana, Bitcoin, Cosmos, Move-based networks, zero-knowledge systems, or other blockchain ecosystems. Responsibilities: Design, develop, test, and maintain blockchain components and smart contracts. Build secure wallet, signature, transaction, and authorization flows. Integrate blockchain systems with backend services, indexers, APIs, and frontend applications. Review existing architecture for security, reliability, scalability, and performance. Work with on-chain data, contract events, attestations, credentials, and reputation logic. Write tests, deployment tooling, and clear technical documentation. We are interested in engineers with strong hands-on experience in blockchain development, whether your background is in Solidity/EVM, Rust/Solana, protocol engineering, blockchain infrastructure, smart contract security, ZK systems, cross-chain technology, or on-chain data. You do not need experience across every blockchain ecosystem. Deep practical experience in one or more areas is more important than familiarity with a long list of tools.

We’re building a Web3 developer reputation platform that creates verifiable profiles from on-chain activity, smart contract deployments, attestations, project history, AI-based analysis, and other technical evidence. We’re looking for an experienced engineer with strong skills in Blockchain, AI, and Security to help improve and expand the platform. -Responsibilities Build and maintain smart contracts and blockchain integrations Implement wallet, signature, transaction, and authorization flows Work with on-chain data, attestations, and reputation logic Integrate AI for developer analysis, scoring, and data processing Review smart contracts and platform architecture for security issues Improve reliability, scalability, and performance Write tests and deployment tooling -What We’re Looking For Strong experience in one or more areas: Solidity / EVM Rust / Solana AI / LLM integration Smart contract and Web3 security Blockchain infrastructure ZK / Cross-chain protocols Cosmos / Move / Bitcoin You do not need experience with everything. Strong practical experience in Blockchain, AI, or Security is more important. When applying, please share your strongest technical area and 1 relevant projects you personally worked on.

Senior Engineer – Blockchain Platforms

GTSS Inc

Dallas, TX

Senior Engineer Blockchain Platforms Location Austin/Dallas/Charlotte (Denver/SF Possible) Hybrid role Long Term Contract Role Overview We are seeking a Senior Engineer Blockchain Platforms to build and integrate the blockchain infrastructure supporting digital asset custody and tokenization platforms. This hands-on role focuses on Layer-1 blockchain integration, core infrastructure services, wallet engineering, and custody-related blockchain workflows. The engineer will collaborate with cus

Blockchain Software Engineer | Java Developer Charlotte, NC | Contract To Hire Preferred Skills Blockchain Job Description Duties and Responsibilities: Design, develop and implement blockchain capabilities Design new methods for implementing blockchain technology for our clients Incorporate usage of digital tokens and smart contract Execute research and development activities for new blockchain deliverables Requirements: Bachelor’s in Computer Science, Information Technology or similar field Minimum of 4 years of experience designing, implementing and supporting software solutions Front-end: JavaScript, HTML/CSS, Angular / React Back-end:, Golang, Java, Python Database: Oracle,MongoDB, MySQL, etc… Infrastructure: Docker, Kubernetes, Continuous Integration, etc… Cloud Platform: AWS, Azure, GCP RESTful APIs, Object-Oriented Experienced using cryptography and hashing algorithms Possesses a thorough understanding of the differences between a Private and Public Blockchain Experienced in working with Tokens / Digital Certificates / Smart Contracts Experienced in developing Blockchain applications on Hyperledger, Ethereum, Corda, Ripple or other proprietary language and APIs Strong understanding of blockchain capabilities in logistics, networking, authentication, validation and cryptocurrency Work well in a Scrum team environment full of innovators Open minded with a success driven attitude Has a passion for innovation Desired Skills: Blockchain developer certification Prior blockchain development and implementation experience For immediate consideration, please forward your Word resume to sheetal@craftner.com Apply Online

Senior/Staff Backend & Platform Engineer (FinOps, IAM & Blockchain)

TechChain Talent

United States

About the Role As a Senior / Staff Backend & Platform Engineer at Moonshot, you'll own some of the most critical systems in our stack:identity and access, funds movement and ledgering, and the blockchain infrastructure that powers our on-chain trading. This role is similar to staff engineers at leading crypto wallets and exchanges who own authentication stacks, key management, and high-scale financial backends. You'll design, build, and operate systems that must be both highly reliable and extremely secure, enabling product teams to move quickly on a solid foundation. Key Responsibilities Design, build, and operate Identity & Access Management services: Authentication flows, sessions, device trust. Authorization and entitlements (roles, permissions, policies). Security controls such as MFA and key management (working with security teams). Own: financial operations systems Transfers and payments orchestration. Ledgering and reconciliation flows. Limits, risk controls, and transactional correctness. Build and maintain: blockchain infrastructure Node and RPC management. Transaction submission, monitoring, and retry logic. Indexing and streaming of on-chain data into internal services and data stores. Define and uphold: reliability and observability standards SLOs and error budgets for core services. Dashboards, alerts, runbooks, and incident management practices. Lead large, cross-functional technical projects from design through rollout, collaborating with Product, Security, and Ops. Mentor and guide other engineers, contributing to engineering standards, design reviews, and documentation. Stay close to industry best practices in auth, key management, and secure infrastructure for crypto and trading. Requirements - 5-12+ years of backend or product or platform engineering, including experience with high-scale, high-availability systems in fintech, crypto, or similar domains. - Deep expertise in at least one of: Identity & access / security engineering; Financial systems / ledgering / payments; Blockchain infrastructure / on-chain data. - Strong experience designing and operating distributed systems (datastores, queues, streaming, background workers). - Track record driving architecture decisions and seeing them through implementation and adoption. - Strong operational mindset: monitoring, on-call, incident response, and postmortems. Bonus Skills * Experience with Flutter, React Native, React, Headless CRMs. * Experience with Go, Rust, Solana. * Experience with Google Cloud or Amazon Web Services. * Experience with crypto wallets, exchanges, or onchain protocols including DeFi, L2s, ZK. * Exposure to data warehousing and analytics for financial reporting. * Contributions to open-source projects Originally posted on Himalayas

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