Blockchain Middle Backend Engineer

We are looking for a Middle Blockchain Backend Engineer to join our team and help build production-grade blockchain and backend systems. The role focuses on developing services with Go or Node.js/TypeScript, integrating blockchain networks, processing on-chain data, and building reliable backend infrastructure. Requirements • 3+ years of professional software engineering experience • Strong experience with Go or Node.js/TypeScript and backend development • Experience designing and implementing REST APIs and backend services • Hands-on experience with PostgreSQL and/or MongoDB • Practical experience with Redis and message queues such as RabbitMQ or Kafka • Experience with Docker and CI/CD • Practical experience integrating applications with Ethereum or other EVM-compatible blockchains • Good understanding of blockchain transactions, wallets, token standards, and on-chain data • Experience with blockchain libraries/tools such as ethers.js, web3.js, viem, Hardhat, or Foundry • Understanding of smart contracts and Solidity • Experience working with blockchain nodes, RPC providers, or indexing services • Understanding of blockchain security and cryptographic principles • Strong problem-solving skills and ability to work independently We can offer: • Projects for such clients as PayPal, Wargaming, Xerox, Philips, adidas and Toyota • Competitive compensation that depends on your qualification and skills • Career development system with clear skill qualifications • Options to work remotely • Compensation for medical expenses • English courses online • Corporate parties and events for employees and their children • Internal conferences, workshops and meetups for learning and experience sharing • Gym membership compensation, corporate sport competitions (cybersport included) • 5 days of paid sick leave per year with no obligation to submit a sick-leave certificate