Blockchain Developer

Blockchain Developer

Posted 7 days ago by Twine

Negotiable
Undetermined
Remote
United Kingdom

Summary: An experienced Backend Blockchain Developer is needed to build and integrate backend infrastructure for a decentralized finance (DeFi) application. The role focuses on developing backend services, writing and auditing smart contracts, and integrating blockchain protocols with a React-based frontend. The developer will also implement wallet connectivity solutions and optimize the backend for efficiency, security, and scalability. Collaboration with frontend developers is essential for ensuring seamless functionality.

Key Responsibilities:

  • Develop backend services to support blockchain functionality.
  • Write and audit smart contracts.
  • Integrate blockchain protocols such as Ethereum, Solana, or Polygon with a React-based frontend.
  • Implement wallet connectivity solutions.
  • Optimize the backend for gas efficiency, security, and scalability.
  • Collaborate closely with frontend developers to ensure seamless functionality.

Key Skills:

  • 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.

Salary (Rate): undetermined

City: undetermined

Country: United Kingdom

Working Arrangements: remote

IR35 Status: undetermined

Seniority Level: undetermined

Industry: IT

Detailed Description From Employer:

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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