Blockchain Developer

15 hours ago

Noida, Uttar Pradesh, India Flexsin Technologies Pvt Ltd Full time ₹ 3,60,000 - ₹ 10,00,000 per year

We are looking for a skilled Blockchain Developer with hands-on experience in Solana (Rust + Anchor) and EVM-compatible chains (Ethereum, Polygon, Base, BSC). The ideal candidate should have expertise in smart contract development, cross-chain interoperability, and full-stack dApp development with React and Web3 integrations.

You will work on building secure, scalable, and user-centric decentralized applications with seamless wallet and blockchain integrations. Immediate joiners preferred.

Responsibilities:

  • Develop and deploy smart contracts on Solana (Rust + Anchor) and EVM-based networks using Solidity
  • Build full-stack dApps with , , and wallet integrations (MetaMask, Phantom, WalletConnect)
  • Implement cross-chain features using LayerZero, Wormhole, or Axelar (bridging, syncing, wrapped tokens)
  • Write secure, gas-optimized contracts and perform thorough testing (Mocha, Jest, Anchor test suite, Hardhat, Foundry)
  • Integrate backend services with , GraphQL/REST APIs, PostgreSQL/MongoDB, and Redis (optional)
  • Automate deployments using Docker and CI tools (GitHub Actions, GitLab CI)
  • Monitor and troubleshoot on-chain activity using tools like Tenderly, Etherscan APIs, and Solana Explorer
  • Collaborate with frontend and DevOps teams to ensure great UI/UX and scalable infrastructure

Required Skills & Experience:

  • 3+ years of full-stack development experience.
  • 1+ year of hands-on Solana smart contract development (Rust + Anchor).
  • Proficiency in Solidity and EVM tools (Hardhat, Foundry, Truffle).
  • Strong knowledge of Web3 wallet integration, blockchain architecture, and RPC interactions.
  • Experience with DeFi, NFTs, DAOs, and decentralized storage (IPFS, Arweave).
  • Familiarity with authentication protocols like JWT, OAuth2, and SIWE (Sign-In With Ethereum/Solana).
  • Understanding of smart contract vulnerabilities and Web3 security best practices.
  • Experience with zk-rollups (zk-SNARKs, zkSync, StarkNet).
  • Exposure to other chains like Cosmos, NEAR, or React Native/mobile dApps.
  • Contributions to open-source blockchain projects.
  • Knowledge of MEV, gas fee estimation, and bridging mechanics across chains.

Job Types: Full-time, Permanent

Pay: ₹360, ₹1,000,000.00 per year

Benefits:

  • Health insurance
  • Provident Fund

Work Location: In person

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