An experienced Backend Blockchain Developer is required to build and integrate the backend infrastructure for a decentralized finance (DeFi) application. This role involves developing backend services to support blockchain functionality, writing and auditing smart contracts, and integrating blockchain protocols such as Ethereum, Solana, or Polygon with an existing React-based frontend. The developer will also be responsible for implementing wallet connectivity solutions, optimizing the backend for gas efficiency, security, and scalability, and collaborating closely with frontend developers to ensure seamless functionality.
Requirements
- Proven experience in backend development for blockchain-based applications.
- Proficiency in smart contract development using Solidity, Rust, or Vyper.
- Experience with integrating blockchain protocols such as Ethereum, Solana, or Polygon.
- Skilled in implementing wallet connectivity solutions (e.g., MetaMask, Phantom, WalletConnect).
- Knowledge of backend API development and connecting blockchain services to frontend applications.
- Strong focus on security, gas fee optimization, and scalable architecture design.
- Ability to review existing codebases and collaborate with other developers effectively.
- Remote availability for a full-time contract engagement.
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- Posted
- Aug 06, 2025
- Type
- Contract
- Level
- Mid-Senior
- Location
- Switzerland
- Company
- Twine
Industries
Categories
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