Back-end developer (web2 project) $2000-3000

We are an innovative  Blockchain company building scalable and secure blockchain solutions. Our projects in DeFi, NFT platforms, and other decentralized services, leveraging Ethereum and Solana. We are looking for Back-end developer (web2 project) for more than one large project that will be used by hundreds of thousands, if not millions of Ukrainian users. 

Mandatory Skills & Experience:
 

• Node.js and TypeScript (2+ years): deep knowledge of NestJS — modules, providers, middleware, decorators; ability to design microservice architecture.
• MongoDB: schema design, query optimization, replication, sharding.
• PostgreSQL: schema design, query optimization, transactions.
• Redis: caching, pub/sub, TTL, token graph storage.
• RabbitMQ (or equivalent): pub/sub, RPC, prefetch configuration, dead-letter queues, high availability.
• Docker & Docker Compose: writing optimized Dockerfiles, multi-stage builds, local service orchestration.
•  AWS: EC2, S3, Secrets Manager.
• CI/CD: GitHub Actions for build, test, and deployment automation.
• Soft Skills: reading English documentation; working effectively in a distributed team; code review expertise; responsibility for finding optimal solutions.

• Experience with Go: goroutines, channels, performance optimization.
• Experience with APIs of various centralized exchanges (Binance, OKX, Kraken, Coinbase, etc.).
•  GraphQL: schema design, resolvers.
• DDD, event sourcing, CQRS.
• Intent-based systems and sequencer endpoints.
   
  We offer:
• Flexible schedule and remote work opportunities.
• Professional growth opportunities
• 18 day off
• 30 sick leave
• and others benefits