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Blockchain Developer

O

OpenSea

30 - 50 USD
Contract
Remote
Web3.jsERC-721

Project Overview:

We’re building a next-gen NFT marketplace with a 12-month roadmap. The platform will launch with essential NFT features like minting, listings, wallet integration, and royalties – then expand into multi-chain support, gated content, and creator tools.


We’re aiming for a 4-6 month MVP, followed by iterative releases focused on growth, UX improvements and feature depth.


Timeline-Based Roadmap:

Phase 1 (Months 1–4): MVP Build.

- ERC-721/1155 minting, fixed-price listings.

- MetaMask / WalletConnect integration

- NFT metadata handling via IPFS

- Marketplace UI (React-based)

- Deploy to Ethereum testnet & mainnetPhase 2 (Months 5–8): Core Feature Expansion

- Auction smart contracts

- Royalty support (EIP-2981)

- Admin panel & dashboard

- Mobile optimization

- Security audit & gas optimization


Phase 3 (Months 9–12): Advanced Functionality

- Multi-chain support (Polygon, Arbitrum)

- Token-gated content

- Creator profiles & lazy minting

- Integration with OpenSea, Alchemy, or Moralis APIs


Responsibilities

  • Write & deploy Solidity smart contracts
  • Connect frontend (React) with smart contracts
  • Optimize gas usage, ensure upgradeability
  • Collaborate with frontend/dev team
  • Manage CI/CD for smart contract deployment
  • Support audits and test coverage

Required Skills

- Solidity + Smart contract development (2–4+ yrs)

- Deep knowledge of ERC-721, ERC-1155, EIP-2981

- Experience with Web3.js or Ethers.js

- Hardhat / Foundry / OpenZeppelin stack

- Mainnet/testnet deployment experience

- Self-driven, team-friendly, and reliable


Bonus Points:

- Multi-chain experience (Polygon, Arbitrum, etc.).

- Familiar with OpenSea SDK, Moralis, Alchemy.

- NFT governance, fractional NFTs, or DAOs.

- Backend experience with Node.js (for metadata/server logic)