Node.js Developer

Anyone can write an
Express route.
Hire someone who has kept one alive.

Our Node engineers work full-time inside your sprints and stay on our payroll. You get the person; we keep the contract, the benefits, the laptop and the cover when they take leave.

engagement.spec
Rate band
$28–48 / hour
Typical lead time
5–8 days to first standup
Commitment
Full-time, one client at a time
Minimum term
1 month
Overlap
4+ hours with your working day
Employed by
Virtus Infotech
The screening question

Six ways a Node service dies at 3 a.m.

This is the list we interview against, and it is the list you should interview against too. A developer who has met four of these has production scars. One who has met none has written tutorials.

01

p99 latency climbs, CPU is flat

What it actually is

Something synchronous is parked on the event loop — a big JSON.parse, a sync crypto call, a regex that backtracks.

What ours does about it

Loop-lag metric on the dashboard, heavy work moved to worker threads or a queue, and the offending regex bounded.

02

Memory climbs until the pod is OOM-killed

What it actually is

A closure holding request scope, an unbounded cache, or listeners added per request and never removed.

What ours does about it

Heap snapshots compared across two hours, the retainer named, and a max size put on every cache that did not have one.

03

Requests hang, then everything hangs

What it actually is

Connection pool exhausted. One slow query holds a client; the next fifty queue behind it.

What ours does about it

Pool size tuned against database max_connections, statement timeouts set, and a circuit breaker on the slow dependency.

04

Process exits with no stack trace

What it actually is

An unhandled promise rejection, or an error thrown inside a callback nobody wrapped.

What ours does about it

Global handlers that log and exit cleanly, async errors surfaced through the framework, and structured logs with a request id.

05

It works on one instance and breaks on four

What it actually is

State kept in module scope — an in-memory session, a rate-limit counter, a scheduled job running on every replica.

What ours does about it

State pushed to Redis or the database, and schedulers given a distributed lock.

06

The deploy is fine, the traffic spike is not

What it actually is

No back-pressure. Node happily accepts more work than it can finish and dies politely.

What ours does about it

A queue with a bounded depth, load-shedding above a threshold, and a load test that proves the number.

Inside your team

Six things they pick up in the first sprint

They join your standup, your repo and your review rotation. There is no parallel Virtus process running alongside yours — that is the point of the model.

API and service work

REST and GraphQL services in TypeScript, with request validation at the boundary and typed responses out of it.

Event-driven plumbing

Queues and streams — BullMQ, SQS, Kafka — with retries, dead-letter handling and idempotent consumers.

Database work that matters

Schema design, migrations, indexes, and the query plan review that stops a table scan reaching production.

Integrations

Payment providers, ERPs, third-party APIs — including the rate limits, webhooks and replay logic nobody scopes.

Performance

Profiling, caching strategy, connection pooling, and the load test that turns an opinion into a number.

The boring rigour

Tests that run in CI, structured logging, health checks, graceful shutdown, and a runbook for the on-call rotation.

The stack

What they already know

Runtime & language
Node.js 20/22 · TypeScript · ESM
Frameworks
NestJS · Express · Fastify · tRPC
Data
PostgreSQL · MongoDB · Redis · Prisma · TypeORM
Messaging
BullMQ · RabbitMQ · Kafka · AWS SQS/SNS
Testing
Vitest · Jest · Supertest · Testcontainers · k6
Ops
Docker · Kubernetes · GitHub Actions · OpenTelemetry
Seniority

Pick the level, not just the language

Mid-level

3–5 yrs$28–34/hr

Ships features in an existing codebase with review. Comfortable with the framework, still learning the failure modes.

Senior

5–8 yrs$34–42/hr

Owns a service end to end. Designs the schema, sets the SLOs, and is the one who reads the heap snapshot.

Lead / Architect

8+ yrs$42–58/hr

Sets service boundaries, reviews across teams, and makes the calls you will still be living with in three years.

Bands are indicative and depend on time-zone overlap and engagement length. The quote we send you is fixed for the term.

Tell us what the service has to do

Throughput, dependencies, deadline. We will send two or three Node engineers who have shipped that shape of system before — with an honest note on where each is weaker.