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Web3 & Blockchain Developer

  • Remote
    • Pondicherry, Tamil Nādu, India
    • Almaty, Almaty, Kazakhstan
    • Antalya, Antalya, Türkiye
    • Astana, Astana, Kazakhstan
    • Athens, Attikí, Greece
    • Asunción, Asunción, Paraguay
    • Augsburg, Bayern, Germany
    • Austin, Texas, United States
    • Bad Homburg, Hessen, Germany
    • Baden-Baden, Baden-Württemberg, Germany
    • Baku, Baku, Azerbaijan
    • Batumi, Ajaria, Georgia
    • Bergisch Gladbach, Nordrhein-Westfalen, Germany
    • Berlin, Berlin, Germany
    • Bernau, Brandenburg, Germany
    • Bielefeld, Nordrhein-Westfalen, Germany
    • Bolzano, Trentino-Alto Adige, Italy
    • Boston, Massachusetts, United States
    • Bratislava, Bratislavský kraj, Slovakia
    • Brussels, Brussels, Belgium
    • Bucuresti, București, Romania
    • Budapest, Budapest, Hungary
    • Cairo, Al Qāhirah, Egypt
    • Dresden, Sachsen, Germany
    • Dubai, Dubai, United Arab Emirates
    • Erevan, Erevan, Armenia
    • istanbul, İstanbul, Türkiye
    • Kharkiv, Kharkivska oblast, Ukraine
    • Krakow, Podlaskie, Poland
    • Kyiv, Kyiv, Ukraine
    • Vilnius, Vilniaus apskritis, Lithuania
    • Madrid, Comunidad de Madrid, Spain
    • Minsk, Minsk, Belarus
    • Pilsen, Plzeňský kraj, Czechia
    • Poland, Mazowieckie, Poland
    • Sofia, Sofia, Bulgaria
    • Tbilisi, Tbilisi, Georgia
    +36 more

Job description

At TechBiz Global, we are providing recruitment service to our TOP clients from our portfolio. We are currently seeking a Web3 & Blockchain Developer to join one of our clients' teams. If you're looking for an exciting opportunity to grow in a innovative environment, this could be the perfect fit for you.

Key Responsibilities

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.

Job requirements

  • 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.

    Nice to Have

  • Experience with real-time gaming platforms or competitive ranking systems.

  • Knowledge of L2 scaling solutions (Polygon, Arbitrum, Optimism) or cross-chain integrations.

  • Previous work on anti-cheating mechanisms or game validation protocols.

  • Familiarity with tournament systems and multiplayer matchmaking.

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