Senior NodeJS Developer

About the role

As a Senior Node.js Developer at Talentgrator, you will be responsible for developing a distributed, high-load networking platform that efficiently processes and routes large volumes of HTTP and WebSocket traffic. This role emphasizes core platform development, network protocol engineering, and ensuring system reliability and observability.

You will work on projects from start to finish, engaging in design, planning, and implementation while utilizing AI tools to enhance your workflow. The position requires a strong understanding of asynchronous programming and high-performance backend systems, alongside experience with SQL databases and DevOps practices.

Skills that matter here

• TypeScript: You will write portable TypeScript code compatible with both Node.js and Bun runtimes.
• Node.js: This role requires strong expertise in Node.js development for building core networking services.
• Networking Knowledge: Practical understanding of HTTP protocols and WebSocket is essential for diagnosing networking issues.
• Software Architecture: Experience in designing modular systems with clean boundaries is crucial for this role.
• DevOps & Observability: You will implement monitoring and tracing to improve operational visibility of the platform.
• Testing & Quality: Experience with various testing methodologies, including TDD, is important for maintaining code quality.

Who this role suits

• You have a strong technical background with a focus on performance and reliability.
• You thrive in a collaborative environment where you can take ownership of projects.
• You are proactive in troubleshooting and resolving complex technical issues.
• You appreciate continuous learning and are open to utilizing new technologies and methodologies.

From the employer

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.