Web3 Developer

At Whitechain, we’re on a mission to revolutionize blockchain, smart contracts, and cryptography. As part of the WhiteBIT ecosystem, we’re building cutting-edge Web3 solutions, from our own EVM blockchain to non-custodial wallets, DeFi platforms, and GameFi experiences.

We’re looking for a skilled and motivated Blockchain / Web3 Developer to help us design, build, and improve scalable blockchain products and infrastructure. If you’re passionate about decentralization, smart contracts, EVM ecosystems, and the future of digital finance, this is your opportunity to make a real impact.

The future of Web3 starts with you — join us as a Blockchain / Web3 Developer!

Requirements

• 3+ years of software development experience
• 1–2+ years of experience in blockchain, Web3, crypto, or DeFi projects
• Strong experience with Solidity and smart contract development in the EVM ecosystem
• Good understanding of Ethereum / EVM architecture, gas optimization, token standards, and smart contract security
• Experience with Web3 tools such as Hardhat, Foundry, Remix, MetaMask, Ethers.js, Web3.js, Viem
• Experience deploying and maintaining smart contracts on testnet and mainnet
• Knowledge of DeFi: AMMs, staking, lending, bridges, oracles, stablecoins, and liquidity pools
• Backend integration experience: APIs, indexers, event listeners, wallets, or transaction services
• Understanding of common blockchain security risks
• Experience with JavaScript, TypeScript, Python, Node.js, or similar backend technologies
• Familiarity with Git, CI/CD, testing frameworks, code reviews, and documentation
• English level B2+

Responsibilities

• Design, develop, test, and deploy smart contracts for Whitechain and Web3 products
• Build blockchain features for DeFi platforms, wallets, GameFi, and ecosystem tools
• Write secure and gas-efficient Solidity code
• Create unit tests, integration tests, and deployment scripts
• Integrate smart contracts with backend services, frontend apps, wallets, APIs, and blockchain infrastructure
• Review existing smart contract code and suggest improvements
• Support audits, security reviews, and vulnerability remediation
• Monitor deployed contracts and help resolve production issues
• Research new blockchain protocols, DeFi mechanics, and EVM improvements
• Contribute to technical documentation and best practices

Nice to Have

• Experience with L1 / L2, rollups, bridges, validators, nodes, or RPC infrastructure
• Experience with audit tools such as Slither, Mythril, Echidna, Tenderly, or OpenZeppelin Defender
• Knowledge of The Graph, SubQuery, custom indexers, or blockchain analytics pipelines
• Experience with account abstraction, cross-chain protocols, or oracle integrations
• Open-source Web3 contributions or a public GitHub portfolio
• Understanding of tokenomics, staking, governance, or protocol economics
• Experience in fintech, crypto exchange, DeFi, wallet, or Web3 infrastructure companies

If you are passionate about Solidity, EVM, DeFi, and building reliable Web3 products, we would be happy to hear from you.