Who you are

• Technically strong with an architectural mindset — you don’t just write code, you design systems. You think about data flows, failure modes, and long-term maintainability before writing the first line.
• Opinionated and able to defend your decisions — you bring an expert perspective to technical discussions and can articulate trade-offs clearly to both engineers and stakeholders.
• Proactive problem-solver — you find issues before they become incidents and propose solutions without waiting to be asked.
• Product-driven — most of your time goes into shipping features and solving real user problems, not open-ended refactoring.
• Self-motivated and responsible — you thrive in small teams, enjoy autonomy, and take full ownership of the development process.

What you will bring

• 5+ years of production experience in backend development with TypeScript/Node.js as the primary stack.
• 2+ years with NestJS in production — modules, providers, middleware, guards, interceptors, microservice architecture with custom transports.
• Deep PostgreSQL expertise — schema design, indexing (partial, GIN/GiST), query optimization, migrations with zero-downtime, database-per-service pattern.
• Hands-on microservices experience — not a monolith split into modules. You’ve dealt with inter-service communication (RPC + pub/sub), message brokers, idempotency, eventual consistency, saga/outbox patterns.
• System design experience — decomposing services, designing API contracts, data flow architecture, capacity planning. You can whiteboard a system and explain why you made each decision.
• Complex integration experience — you’ve built and maintained integrations with third-party APIs, payment systems, or similar external services in production. You know how to handle retries, circuit breakers, and graceful degradation.
• Performance engineering — profiling, caching strategies, load analysis, bottleneck identification. You can optimize a slow query and a slow service alike.
• Production blockchain experience (MUST-HAVE) — you’ve worked with on-chain transactions, multiple networks, and real user funds. You understand HD wallets (BIP32/BIP39), smart contracts, ABI, ERC-20/SPL tokens, and the differences between account-based and UTXO models. Experience with libraries like ethers.js, viem, and solana/web3.js.
• AI-driven development (MUST-HAVE) — you actively use AI tools (Claude, Copilot, Cursor) in your daily workflow. Beyond personal productivity, you have experience optimizing business or organizational processes with AI/LLMs—building automations, internal tools, or workflows powered by language models.
• Strong testing discipline — unit tests (Jest), integration tests with real databases, microservice testing.
• Security-conscious — in fintech and crypto, every code path can touch real user funds. You build accordingly.
• Skilled in technical research — evaluating trade-offs, testing hypotheses, and making data-driven architectural decisions.
• English proficiency at Upper-Intermediate.
• Fluent in the Russian language.

Nice to have

• Experience with NATS JetStream as a transport layer (streams, consumers, delivery policies).
• Observability: OpenTelemetry, Prometheus + Grafana, structured logging (pino), distributed tracing.
• Kubernetes beyond basics: Kustomize/Helm, deployment strategies, resource management.
• Fintech domain knowledge: PCI DSS, GDPR, KYC/AML, payment systems.
• Experience mentoring junior/middle developers.
• React basics for back-office UIs (functional components, hooks, Redux, Material-UI).

Recruitment Process

1. Application.
2. Application Review.
3. HR Interview.
4. Technical Interview.
5. Team Lead Interview.
6. Offer.