Senior Blockchain Developer
Job Today: #1 Hiring App
Senior Blockchain Developer
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.
Responsibilities
- 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.
Required Qualifications
- 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.
Nice-to-Have Qualifications
- 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.
- ...Job Description: Senior Blockchain Developer in United States (Global) We are seeking a talented and experienced Senior Blockchain Developer to join our dynamic team in Portland. As a key player in our innovative development environment, you will have the opportunity...SeniorFull time
- The Center For Reproductive Rights Inc is looking for a Senior Director, Leadership Giving in New York City. This key position will lead national major and principal gift programs, shaping fundraising strategies to support their strategic plan. The ideal candidate will...Senior
- ...Senior Director, Principal Gifts About the Company Philanthropic organization supporting Indigenous culture & individuals Industry Non-Profit Organization Management Type Non Profit Founded 2017 Employees 11-50 Categories...Senior
$160k - $240k
...service creative agency specializing in Blockchain, Web3 Development, Design, Web & Mobile... ...digital landscape. We are looking for a Senior Blockchain Engineer who is passionate... ...you will be responsible for designing, developing, testing, and deploying blockchain-based...SeniorFull timeContract workRemote workHome officeFlexible hours- ...Senior/Principal Statistician – Medical Affairs (Remote) United States ClinChoice is searching for a Senior/Principal Biostatistician-Medical Affairs Consultant to join our global CRO team. As a client‑faceing role, you will work independently and establish a high‑trust...SeniorRemote work
- ...Senior / Staff / Principal Frontend Engineer Location: Onsite New York We have multiple startups interested in talent. Here is a... ...share how that talent fits in the organization. A Front-End Developer is responsible for building the user-facing parts of websites and...SeniorFull time
- Title: Senior/ Principal Statistical Programmer(R) Location: Remote Duration: Long Term Contract Salary: Open Experience : 6-10+ Years Notice : Immediate OR Within 15days We are looking for Senior / Principal Statistical Programmer(s) with strong hands-on expertise in...SeniorLong term contractImmediate startRemote work
$220k - $320k
...experiences. Our multidisciplinary teams deliver blockchain, Web3, mobile, web, and growth solutions... ...Overview** We are looking for a Senior Engineering Manager to lead the... ...and development roadmaps. * Mentor and develop engineers across blockchain, backend, and...SeniorContract workRemote workWorldwideHome officeFlexible hours$100.22k - $150.34k
...to be part of an inclusive, adaptable, and forward-thinking organization, apply now. We are currently seeking a Sr. Blockchain Java Developer (FTE / Hybrid) to join our team in New York , New York (US-NY) , United States (US) . Key Responsibilities: To...SeniorTemporary workWork at officeRemote workFlexible hours- ...want to be part of an inclusive, adaptable, and forward-thinking organization, apply now. We are currently seeking a Sr. Blockchain Java Developer (FTE / Hybrid) to join our team in New York, New York (US-NY), United States (US). K ey Responsibilities: To...SeniorWork at officeRemote workFlexible hours
$148.8k - $185k
...We are seeking a Senior / Principal Technical Recruiter to join our dynamic Talent team. The ideal candidate will possess extensive... ...acceptance. Lead and implement innovative recruitment strategies and develop targeted outreach plans to identify and attract exceptional...SeniorFull timeWork at officeFlexible hours$200k - $260k
...Senior Tax Manager / Tax Principal – High Net Worth Clients $200,000 - $260,000 per year | New York, NY | On-Site | Permanent A... ...partnership, corporate, and private foundation tax returns Develop quarterly tax projections, estimated tax calculations, and extension...SeniorPermanent employmentWork at officeLocal areaFlexible hours$102.5k - $187.9k
...working world. Consulting - Tech Consulting - FinTech - Blockchain and AI Engineering - Senior Whole industries have been disrupted and... ...are an innovative and collaborative group of technical developers, cryptographers, mathematicians and business strategists...SeniorSummer holidayFlexible hours- ...Senior / Staff / Principal Fullstack Engineer Location: Onsite New York (5 days onsite AND hybrid options) We have multiple startups... ...talent fits in the organization. Key Responsibilities: Developing and maintaining both front-end and back-end components: This includes...SeniorFull time
$90k - $100k
...Department of Design and Construction, Public Buildings Division seeks Senior Project Managers. The selected candidates will manage complex... ...to determine the price at which the project should be bid; developing deliverable dates to determine schedules that should be adhered...SeniorPermanent employmentFull timeFor contractors$205k - $220k
...Overview The Senior Principal Software Architect role shapes and guides the architecture of complex systems, platforms, and technology... ..., and foundational assets that enable durable delivery, develop the capabilities of others, and sustain support continuity. The...SeniorSummer workWork at officeFlexible hours3 days per week$78.4k - $136.95k
...Job Summary As a Senior Financial Planning Analyst, you will engage in more advanced financial tasks and provide significant support... ...conduct financial forecasting and trend analysis. Develop and update complex financial models. Analyze profit-and-loss...SeniorFull timeWork at office- About Adaptive Adaptive is a cybersecurity startup on a mission to stop AI-powered cyberattacks. In December 2025, the company announced an $81M Series B led by NVIDIA and Bain Capital Ventures, with participation from Capital One Ventures, Citi Ventures, and continued...SeniorFull timeWork at officeImmediate startMonday to Friday
$109.9k - $125.4k
...Principal Auditor (Experienced Senior Auditor) Corporate Compliance Audits (Hybrid) Capital One's Audit function is a dedicated group of professionals focused on delivering top-quality assurance services to the organization's Audit Committee. Audit professionals are...SeniorFull timePart timeLocal area3 days per week- Trinity Partners, LLC is seeking a Partner to join its Analytics team in New York. This role involves driving business development and providing analytics solutions to both new and existing clients. The ideal candidate will have over 10 years of experience, particularly...Senior
- About The Job: Hey my name is Elken. I'm seeking a personal support worker working in Manhattan, New York. I plan to hire a dedicated, ethical employee with live-in availability. Details: My family needs personal care, assessments, and respite work. It is preferable if...SeniorLive in
- ...Defense Fund, Inc. is seeking a Deputy Chief Development Officer and Senior Vice President to drive revenue growth and sustainability... ...for the right candidate. The role involves mentoring staff, developing strategic plans, and collaborating closely with the Development...SeniorFull time
$100k - $130k
...working capital to small and medium-sized businesses throughout the US in the form of Revenue-Based Financing. We are seeking a senior IT technical support specialist to handle day-to-day end-user support for a 120-employee, multi-site Windows environment to ensure...SeniorFull timeRemote work$80.9k - $92.3k
Senior Administrative Assistant (Administrative Support Assistant III) Capital One is seeking an exceptionally bright, self-motivated, and experienced Administrative Support Assistant III. This pivotal role supports multiple executives, ranging from Director to Managing...SeniorFull timePart timeWork at officeLocal areaImmediate start- ...KeyBank seeks a Senior AI Systems Designer to shape AI experiences across KeyXD. You will define where AI should assist, how it should interact, and how users stay engaged, with governance for scale and trust. You will collaborate with product, design, and business partners...Senior
- A nationally recognized midsize law firm in New York is seeking an experienced Trademark Paralegal. The role requires 5+ years of trademark experience, including direct USPTO work and client communication. You will manage caseloads across various industries while collaborating...SeniorRemote work
- Giga Energy is seeking a Paralegal to own the NDA and intake process in a fast-paced startup environment. You’ll drive NDAs to execution with minimal attorney involvement, and maintain a centralized intake system that triages requests and guides the company through the...Senior
- ...The Senior Red Team Operator leads advanced offensive security operations designed to assess and improve the organization's cyber resilience. This role is responsible for conducting sophisticated threat emulation exercises, adversarial simulations, a Operator, Operations...Senior
$160k - $185k
...--------------------------------------------------------- Senior Project Manager Location: NYC Salary: $160,000-$185,000 Overview... ...and facility projects from initiation through closeout. * Develop project scopes, budgets, schedules, and implementation...SeniorFull timeContract workFor contractors$17 per hour
...and we have received our SOC 2 Type 2 attestation. PactFi was developed in close partnership with two of the industry's largest players... ...both size (AUM) and deal activity. The Role We're looking for a Senior Product Manager to own a core product surface end to end —...SeniorFull time
Do you want to receive more vacancies?
Subscribe and receive similar vacancies to Senior Blockchain Developer. Be the first to apply!
- blockchain engineer New York, NY
- blockchain developer New York, NY
- sr hr business partner New York, NY
- senior lighting artist New York, NY
- senior planner New York, NY
- senior hvac project manager New York, NY
- senior case manager New York, NY
- home instead senior care New York, NY
- senior technical product manager New York, NY
- senior cloud infrastructure engineer New York, NY




