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Full Stack JavaScript Developer (Web3, Next.js & TypeScript)

  • Posted:
  • Proposals: 49
  • Remote
  • #4510771
  • Open for Proposals
Samiullah S.Óscar P.Subhan F.Yasir Ali M.Sidhartha P. + 44 others have already sent a proposal.
  • 5

Description

Experience Level: Expert
I'm looking for an experienced Full Stack JavaScript Developer to help build and maintain a modern web application over the next several months. The project includes frontend and backend development, with blockchain integration as part of the application.

The ideal candidate has strong experience with React, Next.js, Node.js, and TypeScript, along with a solid understanding of REST APIs, Git, and writing clean, maintainable, and well-tested code. Experience with Solidity or Rust, blockchain wallet integrations, Ethereum or other EVM-compatible networks, and development tools such as Hardhat or Foundry would be a plus.

Your responsibilities will include developing new frontend and backend features, integrating blockchain functionality where required, improving existing code, optimizing performance, and collaborating throughout the project to deliver a high-quality application.

When applying, please share a brief summary of your relevant experience, links to similar projects or your GitHub profile, your availability, and your expected hourly rate.

I'm looking for a reliable developer who communicates well and can contribute consistently throughout the project.

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Clarification Board Ask a Question

  • Asad C.

    - What specific blockchain functionality is planned for this application? For example, should users connect wallets, sign messages, execute token transfers, mint NFTs, interact with DeFi protocols, or perform custom smart contract transactions? Also, are the smart contracts already developed, or will they need to be created or modified as part of the project?

    - Is there an existing backend with REST APIs that will be extended, or will new services need to be developed from scratch? Additionally, what database and authentication system are currently being used, and are there any third-party integrations that the new features must support?

  • Muhammad Ather A.

    Hi,

    Thanks for sharing the opportunity! I have a few quick questions:

    1. Is this a new platform or an existing application that needs ongoing development?

    2. Which blockchain network(s) are you planning to support (Ethereum, Base, Polygon, Solana, etc.)?

    3. Do you already have the UI designs and API architecture, or will the developer help define them?

    4. What wallet integrations are you planning to use (e.g., MetaMask, WalletConnect, Coinbase Wallet)?

    5. Roughly how many hours per week are you expecting, and what's the anticipated project duration?

    Looking forward to your reply.

    Best Regards.

  • David H.

    Hello. One thing I'd want to define early is where blockchain functionality fits into the overall product architecture, since Web3 applications require careful separation between frontend experiences, backend services, and on-chain logic. I'd first understand the wallet flows, smart contract interactions, and data ownership model to ensure blockchain features are implemented securely without adding unnecessary complexity. Are the smart contracts already deployed, or will the application also require contract development and integration?