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Job description
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.
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
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
About Whitebit
WhiteBIT is a European cryptocurrency exchange platform that offers spot, margin, and futures trading, as well as crypto-to-fiat services. The company serves both retail and institutional customers and positions itself as a security- and liquidity-focused trading venue for crypto assets.