About the role
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.
About Twine
Twine is a leading marketplace connecting top freelancers, consultants, and contractors with companies needing creative and tech expertise.
Our Mission
Twine's mission is to empower creators and businesses to thrive in an AI-driven, freelance-first world.
About Twine
Twine connects companies to over 500,000 freelance experts across 190+ countries. We enable flexible work opportunities for so many talented people. Twine covers digital, creative and AI – Software development, graphic design, animation, marketing, video products and everything in between.
AI COMPANIES (www.twine.net/ai) If you're a company that uses machine learning and needs audio-visual datasets, we can use our network of diverse freelancers to build this for you. Text to speech, video, actors, presenters, and more.
STARTUPS (www.twine.net) Companies need a flexible and global workforce to keep competitive. However, they struggle to find specific experts to match their needs. If you have niche technical/creative requirements or need a freelancer in a specific location – we can help you.
FREELANCERS (www.twine.net/freelancers) If you're a freelancer, take control and choose which projects you want to work on. Build your portfolio with Twine and find interesting jobs from all over the world.
About the role
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.
About Twine
Twine is a leading marketplace connecting top freelancers, consultants, and contractors with companies needing creative and tech expertise.
Our Mission
Twine's mission is to empower creators and businesses to thrive in an AI-driven, freelance-first world.
About Twine
Twine connects companies to over 500,000 freelance experts across 190+ countries. We enable flexible work opportunities for so many talented people. Twine covers digital, creative and AI – Software development, graphic design, animation, marketing, video products and everything in between.
AI COMPANIES (www.twine.net/ai) If you're a company that uses machine learning and needs audio-visual datasets, we can use our network of diverse freelancers to build this for you. Text to speech, video, actors, presenters, and more.
STARTUPS (www.twine.net) Companies need a flexible and global workforce to keep competitive. However, they struggle to find specific experts to match their needs. If you have niche technical/creative requirements or need a freelancer in a specific location – we can help you.
FREELANCERS (www.twine.net/freelancers) If you're a freelancer, take control and choose which projects you want to work on. Build your portfolio with Twine and find interesting jobs from all over the world.