555 Defi jobs in the United States

• Design, develop, and implement secure and efficient smart contracts on various blockchain platforms (e.g., Ethereum, Binance Smart Chain, Polygon).
• Write high-quality, well-tested code in languages such as Solidity, Vyper, or Rust.
• Develop and maintain decentralized applications (dApps) and their back-end infrastructure.
• Integrate blockchain solutions with front-end interfaces and other systems.
• Conduct rigorous code reviews and security audits to identify and mitigate vulnerabilities in smart contracts and dApps.
• Collaborate with product managers, designers, and other engineers to define project requirements and technical specifications.
• Stay updated on the latest trends, tools, and best practices in blockchain technology and DeFi.
• Troubleshoot and resolve complex technical issues related to blockchain network performance and smart contract execution.
• Contribute to architectural decisions and technology selection for blockchain projects.
• Ensure the scalability, performance, and security of all deployed blockchain solutions.

• Bachelor's or Master's degree in Computer Science, Engineering, or a related technical field.
• Minimum of 6 years of professional software development experience, with at least 3 years focused on blockchain development.
• Proven experience in smart contract development and deployment, particularly with Solidity.
• Strong understanding of blockchain principles, cryptography, consensus mechanisms, and decentralized systems.
• Experience with popular development frameworks and tools (e.g., Truffle, Hardhat, Web3.js, Ethers.js).
• Familiarity with different blockchain networks and their ecosystems.
• Knowledge of security best practices for blockchain and smart contracts.
• Excellent problem-solving, analytical, and debugging skills.
• Strong communication and collaboration abilities.
• Experience with version control systems like Git.
• A passion for decentralized technologies and the DeFi space.

• Own and scale DayFi's DeFi-native business development function, driving integrations with Layer 1s and Layer 2s, stablecoins, lending markets, interest rate derivatives, structured products, and bridges
• Shape and refine the design of DayFi's yield products to improve liquidity, increase retention, and scale TVL
• Provide strategic input into the roadmap of core DeFi integrations to increase composability, utility, and adoption
• Work closely with partners to structure joint incentive programs, coordinate co-marketing, and accelerate TVL growth
• Work with the engineering and product teams at Daylight to provide seamless DeFi UX for mints, redemptions, and other engagements
• Work with the marketing team at Daylight to communicate the value proposition of our novel yield products to DeFi market participants

• Deep familiarity with the DeFi ecosystem, including RWAs, stablecoins, money markets (e.g., Aave, Morpho), and structured yield platforms (e.g., Pendle), and strong opinions on why certain products have worked and others have not
• Demonstrated understanding of advanced DeFi strategies such as looping and fixed-rate interest products
• A strong rolodex of protocol teams and DeFi power users, specifically in the stablecoin, RWA, lending, infrastructure, and market making spaces
• Prior experience in business development or product strategy at a RWA protocol, lending protocol, stablecoin issuer, Layer 1, or Layer 2
• Comfortable thinking in smart contract logic and understanding the implications of EVM-level design decisions on go-to-market and integrations
• Strong strategic thinking and communication skills-you can move between technical discussions and ecosystem storytelling with ease

• Prior exposure to RWA tokenization or experience structuring compliant DeFi products
• Experience working with or across power markets

• Competitive salary and equity package
• Opportunity to shape a category-defining product from the ground up
• Comprehensive health, dental, and vision insurance
• Wellhub membership
• Monthly wellness stipend

• Conduct in-depth research and analysis of various DeFi protocols, platforms, and tokenomics.
• Evaluate the risk and reward profiles of DeFi investment opportunities.
• Monitor market trends, news, and regulatory developments impacting the DeFi ecosystem.
• Develop financial models and performance metrics for DeFi assets and strategies.
• Identify potential arbitrage opportunities and market inefficiencies within DeFi.
• Provide clear and concise reports and recommendations to the investment and product teams.
• Collaborate with smart contract developers to understand protocol mechanics and potential vulnerabilities.
• Contribute to the development of internal frameworks for assessing DeFi projects.
• Stay informed about emerging technologies and innovations within the blockchain and DeFi space.
• Network with industry participants and experts to gather intelligence and insights.

• Bachelor's degree in Finance, Economics, Computer Science, or a related quantitative field. A Master's degree or relevant certifications are a plus.
• Proven experience (3+ years) in financial analysis, investment research, or a similar role, preferably within the crypto or blockchain industry.
• Deep understanding of DeFi concepts, protocols (e.g., Aave, Compound, Uniswap, Curve), and underlying technologies.
• Strong knowledge of financial markets, valuation methodologies, and risk management.
• Proficiency in data analysis tools and programming languages (e.g., Python, SQL, Excel).
• Excellent analytical, quantitative, and problem-solving skills.
• Strong written and verbal communication skills, with the ability to present complex information clearly.
• A keen interest in cryptocurrencies and blockchain technology.
• Ability to work independently and meet tight deadlines in a fast-paced environment.
• High level of integrity and attention to detail.

• Research and analyze emerging DeFi protocols, platforms, and trends.
• Evaluate the economic models, tokenomics, and security of various DeFi projects.
• Conduct risk assessments and due diligence on potential DeFi investments.
• Monitor market activity and identify arbitrage or yield farming opportunities.
• Prepare comprehensive reports and presentations on DeFi market insights and project evaluations.
• Stay informed about regulatory developments impacting the DeFi space.
• Collaborate with portfolio managers and traders to integrate DeFi strategies.
• Build and maintain relationships with key players in the DeFi community.

• Bachelor's degree in Finance, Economics, Computer Science, or a related field.
• Minimum of 3 years of experience in financial analysis, investment research, or cryptocurrency/blockchain analysis.
• Deep understanding of DeFi concepts, including lending, borrowing, yield farming, and decentralized exchanges (DEXs).
• Familiarity with smart contract functionalities and common DeFi exploits.
• Proficiency in data analysis tools and platforms (e.g., Dune Analytics, Nansen).
• Strong analytical, critical thinking, and quantitative skills.
• Excellent written and verbal communication skills.
• A passion for blockchain technology and decentralized finance.

• Design and architect secure, scalable, and efficient DeFi protocols and smart contracts.
• Develop smart contracts using languages such as Solidity and deploy them on blockchain networks (e.g., Ethereum, Polygon).
• Conduct thorough smart contract security audits and implement best practices to prevent vulnerabilities.
• Research and evaluate new blockchain technologies and DeFi trends.
• Collaborate with cross-functional teams, including developers, product managers, and security analysts.
• Tokenize assets and design tokenomics models for new projects.
• Optimize smart contracts for gas efficiency and performance.
• Develop and maintain documentation for DeFi protocols.
• Stay abreast of regulatory changes and compliance requirements in the DeFi space.
• Contribute to the overall technical strategy and roadmap of DeFi initiatives.

• Bachelor's or Master's degree in Computer Science, Engineering, or a related quantitative field.
• Proven experience in designing and developing smart contracts for DeFi applications.
• Expertise in Solidity and other relevant blockchain development languages.
• Strong understanding of cryptography, consensus mechanisms, and blockchain architecture.
• Experience with DeFi primitives (AMMs, lending protocols, yield farming, etc.).
• Knowledge of security best practices for smart contract development and auditing.
• Familiarity with development frameworks like Truffle or Hardhat.
• Excellent analytical and problem-solving skills.
• Strong communication skills for collaborating with technical and non-technical stakeholders.

Job Description

Career Renew is recruiting for one of its clients a Founding Engineer - DeFi - there is a preference for Miami-based candidates, but US remote is accepted if frequent travel is involved.

Our mission is straightforward yet ambitious: to onboard the world to decentralized finance . We believe in the power of crypto and blockchain technology to build a future where finance is open and accessible to everyone.

We’re a lean team of passionate self-starters who relish the responsibility that comes with autonomy. Everyone on our team is both a decision-maker and an implementer—united by a sense of urgency and driven by the conviction that our work can transform global finance.

If you thrive on curiosity, welcome tough challenges, and aspire to leave a meaningful mark on the world, we are the place for you. You’ll run toward the hardest problems alongside high-caliber teammates who consistently push each other to excel and who share your dedication to shaping the future of decentralized finance.

As our Product Engineer , you’ll assume a hands-on role in designing, building, and maintaining the production features that power our rapidly growing DeFi trading platform. You’ll be responsible for optimizing developer velocity, ensuring platform reliability, and fostering a security-first culture.

If you’re excited by the challenge of building beautiful products for millions of users in a cutting-edge Web3 ecosystem—we want to hear from you.

• Product Ownership
  Design, build, and ship delightful, high-impact features end-to-end across mobile and backend—shaping the core user experience of our app.

• Rapid Iteration
  Collaborate closely with design, product, and growth teams to prototype, test, and launch new ideas quickly—shipping often and learning fast.

• User-Centric Development
  Dive deep into user feedback and product analytics to inform decisions, prioritize enhancements, and continuously improve usability and performance.

• Cross-Platform Engineering
  Own full-stack features from Flutter frontends to Go backends, with an emphasis on clean architecture and high performance across iOS and Android.

• Quality & Reliability
  Uphold engineering best practices, write high-quality code with strong test coverage, and participate in code reviews to maintain velocity without sacrificing stability.

• Team Collaboration
  Partner with engineers, designers, and founders to make product decisions, set milestones, and shape Moonshot’s technical direction.

Requirements :

2–4+ years in Product Engineer or Design roles (preferably at high-growth mobile apps or in Web3/crypto).

Must have deep knowledge of design systems and consumer behavior.

Must have strong interest or experience in crypto/blockchain. (Strong preference for Hands-on experience with blockchain technologies (e.g., Bitcoin, Solana, Ethereum, etc.).

Previous experience at a company during a rapid growth phase (e.g., startup to mid-size).

Experience working as a Full Stack Engineer at a leading Crypto company or High Growth Consumer App.

What we offer:

• Mission-Driven
  We’re here to make decentralized finance accessible to everyone—lowering barriers and fostering financial freedom.

• High Growth
  Rapid user and revenue growth means tackling fascinating scaling challenges and contributing at a level few startups can offer.

• Ownership & Impact
  We trust you to shape and execute initiatives end-to-end. Your ideas matter.

• Competitive Compensation
  Top-of-market salary, meaningful equity, and remote work flexibility—or relocation support to sunny Miami.

• Team Culture
  We’re a dedicated, collaborative group that loves what we do—and we have fun doing it.

• Benefits
  Unlimited PTO, medical, dental, vision, and life insurance; employee stock option plan (ESOP); 401(k) with 5% match.

• Design, develop, test, and deploy secure and efficient smart contracts on platforms like Ethereum, Binance Smart Chain, or Solana.
• Build and maintain decentralized applications (dApps).
• Integrate blockchain technology with existing systems and third-party applications.
• Conduct code reviews and ensure code quality and security best practices.
• Optimize smart contract performance and gas efficiency.
• Stay abreast of new blockchain protocols, trends, and security vulnerabilities.
• Collaborate with front-end developers to create user-friendly interfaces for dApps.
• Troubleshoot and resolve issues related to blockchain networks and smart contracts.
• Contribute to the architectural design of new blockchain solutions.
• Document technical specifications and development processes.

• Bachelor's or Master's degree in Computer Science, Engineering, or a related field.
• Proven experience as a Blockchain Developer or Smart Contract Developer.
• Proficiency in Solidity, Vyper, or other smart contract programming languages.
• Solid understanding of blockchain concepts, cryptography, and distributed ledger technologies.
• Experience with blockchain development frameworks (e.g., Truffle, Hardhat).
• Familiarity with DeFi protocols and concepts.
• Experience with web3.js, ethers.js, or similar libraries.
• Strong problem-solving and analytical skills.
• Excellent communication and teamwork abilities.