Senior NodeJS Developer

Core Platform Development

• Design, develop, and optimize services within our networking core.
• Build highly reliable systems for request processing, routing, load balancing, failover, and streaming data delivery.
• Contribute to platform scalability, performance, and operational excellence.

Network Protocol Engineering

• Work directly with: HTTP/1.1, HTTP/2, WebSocket, TLS, CONNECT tunneling, Compression technologies (gzip, brotli, zstd, deflate).
• Diagnose and resolve complex networking issues in production environments.

Observability & Reliability

• Implement tracing, metrics, and logging using OpenTelemetry.
• Build dashboards and alerts generated directly from code.
• Analyze system behavior under load and improve operational visibility.

Third-Party Integrations

• Maintain and extend runtime integrations with external web applications.
• Develop compatibility layers between internal systems and third-party clients.

Software Engineering Excellence

• Write portable TypeScript code compatible with both Node.js and Bun runtimes.
• Ensure proper tree-shaking, modular design, and absence of cyclic dependencies.
• Participate in architecture discussions and technical decision-making.

Full Ownership Delivery

• Own projects end-to-end: Research, Design, Planning, Development, QA, Documentation, Retrospectives.
• Leverage AI tools as an integral part of the engineering workflow.

Requirements

• 5+ years of commercial experience with TypeScript and JavaScript.
• Strong expertise in Node.js development.
• Deep understanding of:
• Asynchronous programming
• Event loops
• Streams
• Error handling
• High-performance backend systems
• Experience designing and maintaining production-grade services.

Networking Knowledge

• Practical understanding of:
• HTTP/1.1 and HTTP/2
• WebSocket
• TLS
• HTTP headers
• Caching
• Compression
• Ability to troubleshoot real-world networking problems.

Software Architecture

• Experience designing modular systems with:
• Clean boundaries
• Dependency Injection
• Type-safe contracts
• Maintainable code structures
• Strong understanding of scalable application architecture.

Testing & Quality

• Experience with:
• Unit testing
• Integration testing
• End-to-end testing
• Comfortable using TDD as a practical engineering tool.

Databases

• Strong knowledge of SQL databases.
• Experience with ORM frameworks and database migrations.
• Understanding of indexes, transactions, and performance optimization.

DevOps & Observability

• Experience with monitoring, logging, and tracing.
• Familiarity with CI/CD pipelines and monorepo workflows.
• Understanding of production environments and performance under load.

Highly Valued Experience

• Reverse Engineering & Web Client Analysis
• AI-Assisted Development

Benefits

• 20 vacation days and 5 family days yearly.
• Flexible start to the workday.
• Support from a professional corporate coach and psychologist.
• Regular internal and external activities, workshops, trips, and corporate events.
• Access to our internal knowledge base, meetups, and team-building activities.
• Ongoing training in new technologies and continuous professional development support.