We are looking for an experienced Blockchain Developer to join our engineering team and build secure, scalable, production-grade blockchain infrastructure. If you have hands-on experience with cryptocurrency wallets, smart contracts, Web3 integrations, and multi-chain ecosystems, we'd love to hear from you.

What We're Looking For

1. 3+ years of professional blockchain development experience.
1. Hands-on experience building production cryptocurrency wallet infrastructure.
2. Solid understanding of wallet architecture and blockchain transaction lifecycles. Knowledge of blockchain security, smart contract auditing, DeFi, crypto payments, exchanges, or Web3 gaming platforms.
3. Experience with one or more blockchain networks including Ethereum, Polygon, BNB Smart Chain, Base, Arbitrum, Solana, Bitcoin, and Tron.
4. Strong understanding of BIP-32, BIP-39, BIP-44, cryptography, digital signatures, and secure key management.
5. Backend development experience using Node.js and TypeScript.

Key Responsibilities

1. Build and integrate custodial, non-custodial, HD, MPC, multisig, and multi-chain wallets.
1. Implement wallet creation,



seed phrase recovery, transaction signing, broadcasting, gas estimation, and transaction monitoring.
2. Develop, test, deploy, verify, and maintain smart contracts using Solidity, Rust, or equivalent technologies.
3. Manage the complete blockchain deployment lifecycle from local development → testnet → security testing → mainnet → production monitoring.
4. Integrate RPC providers, blockchain nodes, WebSockets, explorers, indexers, WalletConnect, hardware wallets, custody providers, bridges, DEXs, and third-party Web3 APIs.
5. Implement blockchain event listeners, balance tracking, transaction monitoring, confirmation handling, nonce management, and chain reorganization handling.
6. Design and implement secure key management using KMS, HSM, MPC, multisig, hot/cold wallet architecture, and secrets management.

Pay: Up to ₹45,000.00 per month

Experience :

- Blockchain: 2 years (required)

Location :

- Lucknow, Uttar Pradesh (required)

Work Location: In person

📌 Blockchain Developer (Lucknow)
🏢 websultanate software technologies
📍 Lucknow