Senior Node.js Engineer

We are looking for a hands-on coding Senior Node.js Engineer with strong backend development skills and a keen interest in application performance, monitoring, and observability. The role involves building high-performance Node.js services while contributing to advanced monitoring capabilities such as tracing, metrics, and error visibility.

You will work on designing resilient, low-latency services while ensuring they are observable, debuggable, and production-ready.

Responsibilities

1. Design and develop scalable Node.js applications with a focus on reliability and performance.

2. Optimize applications for event loop efficiency, memory usage, and throughput.

3. Implement logging, metrics, and tracing best practices within Node.js services.

4. Work with APIs, databases, and message queues to build high-performance integrations.

5. Troubleshoot production issues such as CPU bottlenecks, memory leaks, async/await pitfalls, and unhandled rejections.

6. Collaborate with DevOps/APM teams to ensure applications are fully observable.

7. Stay up to date with Node.js ecosystem updates, performance tuning techniques, and monitoring tools.

Must-Have Skills

• 3+ years of hands-on Node.js development experience (Express, Koa, NestJS, Fastify, or similar).
• Deep understanding of Node.js internals event loop, async programming, promises, streams, garbage collection.
• Experience with debugging and profiling Node.js apps (CPU profiling, heap dumps, async hooks).
• Strong skills in JavaScript/TypeScript coding, modular design, and testing.
• Familiarity with monitoring/observability tools (APM, metrics, tracing, logging) such as New Relic, Datadog, Dynatrace, or OpenTelemetry.
• Knowledge of database drivers and performance tuning (MongoDB, PostgreSQL, MySQL, Redis).
• Solid understanding of REST APIs, gRPC, or GraphQL and their performance implications.

Nice-to-Have Skills

• Exposure to OpenTelemetry APIs for Node.js or distributed tracing concepts.
• Experience with undici, WebSocket’s, or message brokers (Kafka, RabbitMQ).
• Knowledge of Docker/Kubernetes and deploying Node.js apps in cloud-native environments.
• Familiarity with Linux performance tools (perf, eBPF, flame graphs).
• Hands-on experience building high-performance SDKs, middleware, or monitoring libraries.
• Interest in APM/observability domain and performance engineering.