About:

AlgorithmX is a fast-growing product engineering company building secure and innovative AI and blockchain-powered solutions.

We are expanding our technical team and looking for a Blockchain Developer passionate about wallet infrastructures, Web3 ecosystems, and secure crypto asset management.

You will play a critical role in designing secure blockchain integrations, wallet systems, and decentralized application components across multi-chain environments like Ethereum and Bitcoin.

Responsibilities:

• Develop and maintain blockchain integrations across Ethereum, Bitcoin, and multi-chain protocols.
• Implement secure wallet architectures using HD wallet standards (BIP39/32/44).
• Design backend systems to encrypt and manage user seed phrases securely, ensuring admin-controlled recovery access for internal wallets.
• Integrate token swap functionality using DEX aggregators such as 1inch or Uniswap.
• Develop on-chain transaction flows for crypto asset transfers, fee handling, and token management.
• Build and integrate APIs for blockchain explorers, DEXs, and crypto-related services.
• Collaborate with backend engineers to maintain highly secure, scalable, and reliable infrastructures.
• Conduct thorough testing (unit, integration, security) for all blockchain modules.
• Stay updated with the latest Web3 innovations, standards, and security practices.

Ideal Candidate:

• 3+ years of experience as a Blockchain Developer working in production-grade systems.
• Strong knowledge of Ethereum and Bitcoin ecosystems.
• Expertise with Node.js, ethers.js, web3.js, bitcoinjs-lib, and wallet libraries.
• Solid understanding of wallet creation, key/seed phrase management, and encryption protocols (AES-256, Argon2).
• Experience in integrating token swaps and interacting with decentralized finance (DeFi) platforms.
• Proficient in backend API development and blockchain data handling.
• Highly security-conscious with knowledge of secure storage, key rotation, and audit logging practices.

More the Merrier:

• Exposure to smart contract development (Solidity or Rust).
• Experience working with custodial or semi-custodial wallet architectures.
• Knowledge of multi-party computation (MPC) and threshold signature schemes (TSS).
• Familiarity with DevOps tools for blockchain deployment and vault management.