Senior Full-Stack Developer for DeFi Platform (Web3)

Posted yesterday

Worldwide

Summary

Project Overview We are looking for an experienced Full-Stack Developer to help build a next-generation decentralized finance (DeFi) platform. The project involves developing secure, scalable, and high-performance Web3 infrastructure, including smart contracts, backend services, APIs, and a modern frontend. The ideal candidate has experience delivering production-ready blockchain applications and is comfortable working across the full technology stack. Responsibilities - Design and develop a DeFi platform from concept to production. - Develop secure smart contracts using Solidity. - Build backend services using Node.js or NestJS. - Develop responsive frontend applications with React or Next.js. - Integrate Web3 wallets such as MetaMask, WalletConnect, and Coinbase Wallet. - Integrate blockchain networks including Ethereum, Base, Arbitrum, Optimism, Polygon, or BNB Chain. - Develop REST APIs and GraphQL services. - Implement staking, token management, and reward distribution logic where applicable. - Integrate price oracles and blockchain indexing services. - Optimize platform performance, scalability, and reliability. - Write unit and integration tests. - Participate in architecture discussions and code reviews. - Prepare technical documentation. Required Skills - Solidity - Node.js - TypeScript - React.js / Next.js - Web3.js or Ethers.js - REST API / GraphQL - PostgreSQL or MongoDB - Docker - AWS, Google Cloud, or Azure - Git

  • $5,000.00

    Fixed-price
  • Intermediate
    Experience Level
  • Remote Job
  • Ongoing project
    Project Type

Contract-to-hire opportunity

This lets talent know that this job could become full time.
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Skills and Expertise
Mandatory skills
Next.js
Vue.js
React
Node.js
Activity on this job
  • Proposals:20 to 50
  • Last viewed by client:yesterday
  • Interviewing:
    6
  • Invites sent:
    31
  • Unanswered invites:
    21
About the client
Member since Jul 26, 2026
  • Philippines
    Naic1:46 AM

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