Web3 and Blockchain Developer

TechBiz Global

full-time

Posted on: 9/12/2025

Origin: • 🇩🇪 Germany

✨ AI Apply

Mid-LevelSenior

JavaScriptMongoDBNode.jsReactRedisReduxSolidityTypeScriptWeb3

About the role

Smart Contract Development & Deployment
Design, implement, and deploy smart contracts for match results, NFT minting, and automated reward distribution. Ensure transparency, automation, and tamper-proof operations through secure contract logic. Conduct testing and auditing of contracts to maintain reliability and security
Blockchain Integration
Integrate Web3 functionality with the frontend (React, Tailwind, TypeScript). Implement wallet connection (MetaMask, Coinbase Wallet, etc.) and manage on-chain transactions. Enable NFT creation and asset management directly within the platform.
Game & Player Infrastructure
Support the development of a skill-based ranking system that reflects player performance and progression. Contribute to anti-cheating and fair-play mechanisms using blockchain validation and secure protocols.
Backend & Database Collaboration
Work with databases (MongoDB) to store user data, match history, tournament records, and NFT metadata. Use Redis for caching leaderboards, session data, and real-time game state.

3-5 years of Proven experience as a Web3/Blockchain Developer with strong knowledge of Ethereum
Proficiency in Solidity and smart contract frameworks (Hardhat, Truffle, or Foundry).
Experience with Web3JS or EthersJS for wallet connections and contract interactions.
Familiarity with React, React.js, Redux, Tailwind CSS, and TypeScript for frontend integration.
Familiarity with NodeJS and ExpressJS for backend development
Understanding of MongoDB and Redis for backend data management.
Strong grasp of blockchain security best practices and optimization techniques.
Experience with NFT standards (ERC-721, ERC-1155) and tokenomics.
Problem-solving mindset and ability to work in a fast-paced, collaborative environment.