Node.js Jobs in Web3

Company: NAVI Protocol is the most trusted DeFi infrastructure on #Sui with the leading Lending + LSDeFi platforms. Co-led by OKX Ventures, Hashed, and Dao5. NAVI Protocol has 700m+ TVL and 1m users since its launch.

Job Summary

We are seeking a Fullstack Engineer to join Navi Protocol’s core team, based in the Bay Area with a hybrid work arrangement. You’ll play a key role in developing and scaling our DEX aggregator, leveraging your deep expertise in Node.js, TypeScript, and React to build features that connect users to the best trading opportunities across decentralized exchanges. This role is integral to advancing our mission of simplifying DeFi trading while upholding the security and efficiency that define Navi Protocol.

Job Details

Employment Type: Permanent Job

Seniority: Senior Engineer

Job Function: Engineer

Team: Aggregator

Job Description

Key Responsibilities

• Lead the design and implementation of Navi Protocol’s DEX aggregator, with a focus on React-based frontends and Node.js/TypeScript backends, optimizing liquidity routing, price aggregation, and cross-exchange transaction flows.
• Collaborate with in-office and remote team members—including product managers, blockchain engineers, and UI/UX designers—to integrate new DEX partners and enhance platform functionality.
• Develop responsive, low-latency React UIs that deliver real-time price comparisons, transaction simulations, and intuitive trading experiences for users.
• Build and maintain Node.js/TypeScript backend services, including liquidity aggregation algorithms, API integrations with partner DEXs, and transaction routing logic.
• Optimize smart contract interactions (e.g., multi-step swaps, gas estimation) to ensure cost-efficiency and reliability across EVM and non-EVM chains.
• Troubleshoot cross-stack issues, from React frontend state management to Node.js/TypeScript backend performance and blockchain transaction execution.
• Drive innovation in DEX aggregation, such as refining routing efficiency, reducing slippage, and enhancing user trust through transparent transaction mechanics.
• Mentor junior engineers in React/Node.js best practices, conduct code reviews, and enforce standards for maintainable, secure code.

Required Qualifications

• 5+ years of full stack engineering experience, with 2+ years specializing in DEX aggregators or decentralized trading platforms.
• Expertise in Node.js and TypeScript for backend development, including RESTful API design, WebSocket integration, and performance optimization.
• Advanced proficiency in React for frontend development, with experience in state management (Redux, Context API), component architecture, and responsive design.
• Deep understanding of DEX aggregator mechanics: liquidity routing algorithms, price aggregation logic, and cross-exchange compatibility.
• Strong knowledge of blockchain fundamentals, including smart contracts (Solidity/Rust/Move), EVM chains, and layer-2 solutions (e.g., Arbitrum, zkSync).
• Experience with blockchain development tools: Ethers.js, Web3.js, Hardhat, and integration with DEX APIs (e.g., Uniswap, SushiSwap, PancakeSwap).
• Familiarity with security practices for DEX aggregators, including front-running mitigation, transaction validation, and smart contract interaction auditing.
• Ability to thrive in a fast-paced environment, adapting to evolving DeFi protocols and Navi Protocol’s roadmap.
• Eligibility to work in the United States and willingness to participate in a hybrid work model in the Bay Area.
• Bachelor’s degree in Computer Science, Engineering, or equivalent practical experience.

Preferred Qualifications

• Direct experience building or scaling DEX aggregators (e.g., 1Inch, Matcha, 0x Protocol).
• Familiarity with cross-chain aggregation technologies and bridge integrations.
• Experience with DevOps for Node.js/React applications (CI/CD, Docker, AWS/Azure, monitoring tools like Datadog).
• Contributions to open-source DeFi or React/Node.js projects.
• Highly preferred: Experience with Sui blockchain development and on-chain integrations.
• Understanding of yield optimization or advanced trading features (e.g., limit orders, TWAP).