Senior NodeJS Developer

Role Description

We are looking for a Senior Node.js Developer to join our team and help build a distributed, high-load real-time networking platform that processes, transforms, and routes large volumes of and WebSocket traffic between clients and external services. This is a highly technical engineering role focused on network services, protocol-level development, observability, runtime integrations, and modern software architecture.

Our platform is built as a large TypeScript monorepository running simultaneously on both Node.js and Bun, with a unified abstraction layer. We actively embrace AI-assisted development practices and expect engineers to take ownership throughout the entire software lifecycle—from research and design to implementation, testing, deployment, and continuous improvement.

What You'll Do

• 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:
    • 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.

Qualifications

• 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.
• Practical understanding of:
  • and
  • WebSocket
  • TLS
  • headers
  • Caching
  • Compression
• Ability to troubleshoot real-world networking problems.
• Experience designing modular systems with:
  • Clean boundaries
  • Dependency Injection
  • Type-safe contracts
  • Maintainable code structures
• Strong understanding of scalable application architecture.
• Experience with:
  • Unit testing
  • Integration testing
  • End-to-end testing
• Comfortable using TDD as a practical engineering tool.
• Strong knowledge of SQL databases.
• Experience with ORM frameworks and database migrations.
• Understanding of indexes, transactions, and performance optimization.
• Experience with monitoring, logging, and tracing.
• Familiarity with CI/CD pipelines and monorepo workflows.
• Understanding of production environments and performance under load.

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