Senior NodeJS Developer

Talentgrator

1d

About The Position

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 HTTP 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.

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, and high-performance backend systems.
• Experience designing and maintaining production-grade services.
• Practical understanding of HTTP/1.1 and HTTP/2, WebSocket, TLS, HTTP headers, caching, and compression.
• Ability to troubleshoot real-world networking problems.
• Experience designing modular systems with clean boundaries, dependency injection, type-safe contracts, and maintainable code structures.
• Strong understanding of scalable application architecture.
• Experience with unit testing, integration testing, and 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.

Nice To Haves

• Reverse Engineering & Web Client Analysis: Experience working with third-party web applications and browser internals, including reading and understanding minified or obfuscated JavaScript bundles, reverse engineering application behavior without source code, network traffic analysis using HAR files and proxy tools, debugging HTTP/2 and WebSocket traffic, browser instrumentation and runtime code injection, working with Service Workers and modern SPA architectures, cross-browser testing using Playwright and BrowserStack.
• AI-Assisted Development: Use AI critically and responsibly, verify generated code and recommendations, follow structured workflows from research to implementation, understand security considerations when working with AI tools, take ownership of outcomes rather than relying blindly on generated solutions.

Responsibilities

• 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.
• Work directly with HTTP/1.1, HTTP/2, WebSocket, TLS, CONNECT tunneling, and Compression technologies (gzip, brotli, zstd, deflate).
• Diagnose and resolve complex networking issues in production environments.
• Implement tracing, metrics, and logging using OpenTelemetry.
• Build dashboards and alerts generated directly from code.
• Analyze system behavior under load and improve operational visibility.
• Maintain and extend runtime integrations with external web applications.
• Develop compatibility layers between internal systems and third-party clients.
• 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.
• Own projects end-to-end: Research, Design, Planning, Development, QA, Documentation, Retrospectives.
• Leverage AI tools as an integral part of the engineering workflow.

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

What This Job Offers

• Job Type: Full-time
• Career Level: Senior
• Education Level: No Education Listed