Blockchain Developer

About the Role

Blockchain Developers

Key Responsibilities

• Design and develop secure, gas-efficient smart contracts in

  Solidity

  .
• Build modules like contract anchors, DID/identity registry, reputation tokens, escrow logic.
• Integrate smart contracts with our backend and frontend.
• Write automated tests using

  Hardhat / Foundry

  .
• Implement Web3 flows including wallet login, signing, and events handling.
• Deploy contracts on testnet and mainnet (Polygon, Arbitrum, or similar L2).
• Optimize contract architecture for scalability, cost, and security.
• Integrate IPFS for storing contract hashes and content pointers.
• Review smart contract vulnerabilities and work with auditors.
• Maintain clear documentation for ABIs, deployment scripts, and contract specs.

Required Skills

• Strong experience with

  Solidity

  and EVM-based development.
• Hands-on experience with

  Hardhat, Foundry, Truffle

  , or similar frameworks.
• Excellent understanding of:
• ERC standards (ERC-20, ERC-721, ERC-1155)
• EIP-712 typed data signing
• Gas optimization
• Security patterns (reentrancy, access control, upgradeability)
• Proficiency with

  ethers.js

  or

  web3.js

  .
• Experience integrating smart contracts with React or backend services.
• Practical understanding of blockchain principles (transactions, gas, mempool, nodes).

Nice-to-Have

• Experience with Layer-2 solutions (Polygon, Arbitrum, Optimism).
• Knowledge of DID, Verifiable Credentials, or decentralized identity systems.
• Familiarity with IPFS/Filecoin.
• Experience with Gnosis Safe, multisig, or governance modules.
• Background in security audits or participation in bug bounty programs.

Soft Skills

• Strong analytical & security-first mindset.
• Ability to clearly document complex technical logic.
• Collaboration with product, backend, and frontend teams.
• Ownership and accountability of blockchain module architecture.