eG Innovations - Senior Node.js Engineer - NestJS / Express.js

Role Overview :

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 :

• Design and develop scalable Node.js applications with a focus on reliability and performance.
• Optimize applications for event loop efficiency, memory usage, and throughput.
• Implement logging, metrics, and tracing best practices within Node.js services.
• Work with APIs, databases, and message queues to build high-performance integrations.
• Troubleshoot production issues such as CPU bottlenecks, memory leaks, async / await pitfalls, and unhandled rejections.
• Collaborate with DevOps / APM teams to ensure applications are fully observable.
• Stay up to date with Node.js ecosystem updates, performance tuning techniques, and monitoring 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 Skills :
• Exposure to OpenTelemetry APIs for Node.js or distributed tracing concepts.
• Experience with undici, WebSockets, 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.

(ref : hirist.tech)