We are looking for a talented and experienced Blockchain Node.js Developer who thrives in a fast-paced environment and is ready to tackle new challenges.The project involves the development of a system for working with cryptocurrencies that will partially replace the current structure used in the services. The system will be similar to the tools used by cryptocurrency exchanges for accepting and managing balances, but with specific features for distributing outgoing flows. The integration includes connecting to existing services, such as merchant platforms and systems for handling fiat payments.Responsibilities:· Write efficient, maintainable code· Ability to efficiently design and implement separate self-sufficient components· Participate in architectural discussions and technical decision-making· Identify potential technical risks and develop mitigation strategies· Ensure knowledge is effectively shared and maintained within the team· Foster a collaborative and innovative development environment· Perform cross code-review with team members· Properly maintain documentationRequirements:· 4+ years of experience with server-side JS/TS· Solid understanding of TypeScript, JavaScript fundamentals and internals· Experience with Express, NestJS or any other similar framework· Flexible approach in regard to different programming languages/technologies· Proven experience using any other stack (.NET/ Go/ Java/ C++, etc.)· Strong understanding of asynchronous programming, event-driven architecture, and non-blocking I/O· Hands-on experience with Web3.js or Ethers.js for interacting with Ethereum or other EVM-compatible networks· Understanding of smart contracts· Familiarity with popular blockchains like Ethereum, Binance Smart Chain, or Layer 2 solutions· Expertise in data structures, algorithms, and software design patterns· Solid understanding of different software architectural patterns· Experience with different RDBMSes (MySQL/ PostgreSQL)· Experience in writing complex SQL queries and their optimization· Experience with different kinds of ORMs· Familiarity with Docker, containerization and orchestration tools· Strong analytical skills with the ability to think critically and solve complex issues· Proficiency in writing unit tests, integration tests, and end-to-end testsWill be a plus:· Familiarity with DevOps practices and infrastructure as code tools· Understanding of consensus algorithms, cryptographic principles, and decentralized applications (dApps)We offer:· Competitive compensation· Social package (24 working days of annual leave, 5 paid sick days)· Flexible working hours· Challenging projects in diverse business domains and a variety of tech stacks· Personal development and professional growth opportunities· Work with talented, ambitious and family-feel teams· Educational possibilities: corporate courses, knowledge hubs, and in-house English classes· Compensation for your professional certification & support for your learning activities· Opportunity to choose IT equipment you like· Corporate social responsibility