Hire Entry level Node.js Developers
Node.js developers build API and service layers on a single-threaded, event-driven runtime. That runtime model is the whole job: candidates who do not understand the event loop write code that works in development and stalls under concurrency. Backend experience in a threaded language does not transfer automatically.
Skills to screen for
Must have5
- Node.js event loop, streams and async patterns
- HTTP API design and a framework (Express, Fastify or NestJS)
- Relational database access and query performance
- Error handling, timeouts and graceful shutdown
- JavaScript or TypeScript depth
Useful to have4
- Message queues (BullMQ, Kafka)
- Redis caching patterns
- Observability and structured logging
- Docker
Experience levels and what to expect
CTC ranges are advertised figures from live listings on betterjobs.in, not survey data. Actual offers vary with location, funding stage and interview performance.
| Level | Experience | Scope | Typical CTC |
|---|---|---|---|
| Junior | 0-2 years | Implements endpoints against an existing service structure. | ₹4-9 L |
| Mid-level | 2-5 years | Owns a service including its data model and failure behaviour. | ₹10-20 L |
| Senior | 5-9 years | Designs service boundaries, resilience patterns and data architecture. | ₹22-40 L |
| Lead / Principal | 9+ years | Owns backend architecture and standards across teams. | ₹42-75 L |
What this role owns
- Design and implement HTTP or RPC service endpoints
- Own database schema and query performance for their services
- Implement authentication, authorisation and input validation
- Instrument services with logging, metrics and tracing
What actually separates a good hire here
Ask what happens to a Node process when one request runs a 400ms synchronous loop. Candidates who explain that every other request is blocked understand the runtime. Candidates who say "it gets slower" do not.
The common mistake
Hiring on framework familiarity rather than runtime understanding. Express syntax takes a week; diagnosing an event-loop stall in production does not.
Questions worth asking in a first screen
- 1How do you prevent one slow downstream call from taking your whole API down?
- 2When would you use a stream rather than buffering a response?
- 3How do you make an endpoint safe to retry?