Tech hiring Software engineering
Hire Node.js developers who keep the API standing.
A Node.js developer builds the server side of a product in JavaScript or TypeScript: the API, the background jobs, the real-time connections and the integrations with other systems. We shortlist people assessed on asynchronous code, data modelling and what happens to a service when traffic, or a dependency, misbehaves.
01 The role
What Node.js developers do all week, and what comes out of it.
A Node.js developer writes the services that sit behind your web and mobile apps. They design the endpoints and the data model, validate what comes in, talk to the database and to third-party APIs, move slow work onto queues, and make sure the whole thing can be deployed, observed and debugged at three in the morning.
Node runs your code on a single thread with an event loop, which is why it handles thousands of idle connections cheaply and also why one careless synchronous loop can stall every request at once. The real skill is asynchronous discipline: handling rejected promises, respecting backpressure in streams, setting timeouts on every outbound call, and noticing a memory leak before the process is killed for it.
Current practice is TypeScript by default, a schema library at the edges so that types are checked at runtime as well as compile time, and a deliberate choice of framework: NestJS where a large team wants structure, Fastify or Express where it does not. Unlike a full-stack developer, a Node.js specialist is hired for depth on the server and is not expected to own the interface.
What they ship
- REST and GraphQL APIs for web and mobile clients
- Real-time features over WebSockets: chat, presence, live dashboards
- Background workers and scheduled jobs on a queue
- Webhook receivers and integrations with payment, messaging and CRM providers
- Authentication and authorisation: sessions, tokens, OAuth, role checks
- Backend-for-frontend layers that shape data for one specific client
- Database schemas, migrations and the slow-query fixes that follow
02 Skills and stack
What Node.js developers work with, and what is optional.
Node gives you a runtime and very little else, so every team assembles its own stack. Tell us the framework, the database layer and the queue you already run.
Core
The role cannot be done without these.
- JavaScript and TypeScript, in depth
- The Node.js runtime: event loop, streams, async patterns
- HTTP and API design (REST, GraphQL)
- SQL and relational data modelling
- Authentication, authorisation and input validation
- Automated testing of services
- Error handling, logging and debugging in production
Tooling
Varies from team to team.
- NestJS, Fastify or Express
- PostgreSQL or MySQL; MongoDB where the data suits it
- Prisma, Drizzle or TypeORM
- Redis, and BullMQ for queues
- Zod or a similar schema validator
- Vitest, Jest or the built-in Node test runner
- Socket.IO or ws
- Docker
- OpenAPI for API documentation
- Pino and OpenTelemetry for logs and traces
Adjacent
Useful, not required.
- React or another front-end framework, enough to read it
- Serverless platforms (AWS Lambda, Cloudflare Workers)
- Message brokers (Kafka, RabbitMQ, SQS)
- CI/CD pipelines
- gRPC and service-to-service contracts
- Bun or Deno as alternative runtimes
03 When to hire one
Signs you need a Node.js developer, and signs you need someone else.
Most hiring mistakes are made before the job description is written. Read both lists before you brief us.
Hire a Node.js developer when
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Your front end is in TypeScript and the back end should match
One language across both sides means shared types, shared validation schemas and developers who can review each other’s pull requests.
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The product depends on live updates
Chat, notifications, collaborative editing or a live dashboard all mean many open connections at once. That is the workload Node was designed for.
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Most of the work is talking to other services
Payments, messaging, identity checks, partner APIs. An I/O-heavy integration layer plays to Node’s strengths and needs someone careful about retries and timeouts.
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An Express app has grown without structure
Routes run to hundreds of lines, nothing is typed and errors vanish into unhandled rejections. This needs a developer who has brought order to a Node codebase before.
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Front-end developers are waiting on endpoints
Screens are finished and mocked, and the API behind them is the bottleneck sprint after sprint.
Look elsewhere when
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The heavy lifting is numerical, data science or model training
CPU-bound work blocks Node’s event loop, and the scientific libraries live in Python. Hire where the ecosystem is.
Hire Python developers -
Most of the open work is screens, not services
A Node.js developer can write React, but component design, accessibility and render performance are a specialism of their own.
Hire React developers -
You want one person across the browser, the API and the database
Ask for full-stack so that both ends are assessed, not assumed.
Hire full-stack developers -
The service is fine and the releases are the problem
Slow pipelines, manual deployments and missing monitoring are infrastructure work. Another backend developer will not fix them.
Hire DevOps engineers -
You need a content site or a shop on an existing CMS
WordPress and its relatives are PHP. Building the same thing from scratch in Node costs more and gives the editors less.
Hire PHP developers
04 How we assess
Four checks, before a name reaches you.
A CV says what someone claims. We test what they can do, then send you the evidence with the shortlist.
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Stage 1
Profile review
We look for back-end work we can inspect: a repository, an API with documentation, a service the candidate ran in production. We read how errors are handled, whether TypeScript is strict or decorative, and whether there are tests around the database and the external calls.
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Stage 2
Technical test
A timed test on JavaScript and TypeScript fundamentals, asynchronous behaviour in Node, HTTP and SQL, with a coding exercise in which the candidate builds a small endpoint that validates input, reads or writes data and fails cleanly.
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Stage 3
Conversation with our team
Our engineers ask the candidate to walk through a service they owned: the data model, what was moved to a queue and why, how they dealt with a slow dependency, and what broke in production. We listen for whether they can explain the event loop in terms of that system.
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Stage 4
Review and levelling
Reviewers score accuracy, speed, problem-solving, communication and teamwork, then assign a level from our engineering framework. For Node.js roles the notes record how much of a service the person designed and operated, as distinct from endpoints added to someone else’s.
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Then
Your shortlist
Assessed candidates, with notes and scores.
The engine
Evalia
Assessments run on Evalia, the assessment platform we built ourselves. Across the ProDevs network, more than 100,000 assessments have been completed.
The levels we assign are public. Read the engineering framework, or see how a hire runs from brief to offer.
05 Seniority
Three levels. What each one can own.
The title on a CV tells you little. What matters is how much a Node.js developer can be handed without someone checking each step.
Junior
Owns an endpoint or a job
- Adds routes, validation and queries inside an existing service structure
- Uses async and await correctly and handles the failure path
- Writes tests for their own handlers and responds well to review
- Needs guidance on schema design, concurrency and production debugging
Mid-level
Owns a service or a domain
- Designs the endpoints and tables for a feature and agrees the contract with clients
- Decides what runs in the request and what belongs on a queue
- Finds slow queries and event-loop stalls with profiling, not guesswork
- Makes integrations safe to retry: idempotency keys, timeouts, dead-letter handling
Senior
Owns the back-end architecture
- Chooses between a modular monolith and separate services, and can defend the choice
- Sets conventions for errors, logging, validation and testing that others follow
- Plans for load: connection pools, caching, rate limits, graceful shutdown
- Leads incident response and turns each incident into a concrete change
Indicative salary
Backend developers (Node, Python, PHP). Annual, in US dollars, for remote roles with US, UK and EU companies.
- Mid-level
- $28–50k
- Senior
- $50–80k
- Typical US equivalent
- $120–190k
Indicative market ranges as of August 2026, based on ProDevs placement experience and published market data. The exact figure depends on stack, seniority and time-zone requirements. See the full cost breakdown.
06 Interview questions
Interviewing a Node.js developer? Ask these.
None of these has one right answer. The way someone answers tells you how they work.
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What happens to other requests while your handler runs a slow synchronous function?
A good answer shows: They wait, because there is one thread running JavaScript. A strong candidate then says how they would find the culprit and where the work should go: a worker thread, a queue or another service. A weak answer says Node is “multi-threaded because it is async”.
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A promise rejects and nothing catches it. What happens, and how do you prevent that?
A good answer shows: Knowledge that current Node versions terminate the process on an unhandled rejection, plus a habit: awaited calls inside try and catch, a central error handler, and lint rules for floating promises. Vague talk of “adding error handling” is not enough.
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You receive the same payment webhook twice. How does your service cope?
A good answer shows: Idempotency: a unique event identifier stored with a constraint, the work done inside a transaction, and a fast acknowledgement with processing on a queue. Candidates who have not met this in production tend to assume webhooks arrive once and in order.
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How do you validate data at the edge of a TypeScript service?
A good answer shows: Recognition that types disappear at runtime, so request bodies, environment variables and third-party responses need a schema check with Zod or similar. Casting the request body to an interface and trusting it is the common mistake.
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Memory use climbs steadily until the container restarts. How do you investigate?
A good answer shows: A method: confirm with metrics, take heap snapshots and compare them, then look at the usual suspects such as unbounded caches, listeners that are never removed and closures holding large objects. Raising the memory limit is a delay, not a fix.
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When would you choose NestJS, and when something lighter?
A good answer shows: A trade-off, not a favourite: NestJS gives a large team structure and dependency injection at the cost of indirection; Fastify or Express suits a small service. Listen for experience of the downside of whichever they prefer.
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What do you check before adding an npm package to a production service?
A good answer shows: Maintenance activity, the size of the dependency tree, install scripts, licence, and whether twenty lines of their own code would do. Good candidates mention lockfiles, audits and at least one supply-chain incident they remember.
07 Ways to engage
Four ways to bring a Node.js developer in.
A permanent hire is the usual route, not the only one. Choose by how long the work lasts and who should employ the person.
- Placement fee, of first-year salary. One-time.
- 10–15%
- Replacement guarantee on direct hires.
- 2 weeks
- To a first shortlist, for most roles.
- 48h
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Direct hire
A permanent employee on your contract and your payroll. One-time placement fee of 10–15% of first-year salary.
Tech hiring -
Dedicated team
A Node.js developer inside a team we assemble and run for you: product, design and engineering on your roadmap, for a monthly retainer.
Dedicated teams -
Outsourcing & payroll
A full-time person in a country where you have no legal entity. ProDevs employs and pays them: 20% of salary if we find the person for you, or 5% of salary, capped at $500 a month, for payroll and compliance on someone you have already chosen.
Outsourcing -
Freelance project
A defined piece of work with a clear end. You pay the agreed price per milestone through escrow, plus a 5% client fee. Free to post.
Freelancers
08 Around the role
A Node.js developer is one seat. These are the others.
A Node.js developer is usually the person every client team depends on. Web and mobile developers consume their API, product managers ask them what is feasible, and whoever runs the infrastructure needs them to make the service observable and safe to restart.
- React developer
- Agrees payload shapes, pagination and error formats, often through shared TypeScript types.
- Mobile developer
- Keeps old API versions working, because an app release cannot be rolled back like a web page.
- DevOps engineer
- Provides health checks, structured logs and graceful shutdown so deployments do not drop requests.
- Product manager
- Explains what a feature costs on the server side and which parts can ship first.
- QA tester
- Supplies test data, API documentation and stable environments to automate against.
09 Client testimonials
Hear it first-hand, from companies that hired.
Founders, operators and executives describe working with ProDevs, in their own words.
Play video: Client testimonial: Olufemi Seyi, COO, Casafina development company
Play video: Client testimonial: Aproko Doctor, Building AwaDoc
Play video: Client testimonial: JT Liddell, Promenade CEO
10 Questions
Before you hire a Node.js developer: the usual questions.
Something else? Book a call (opens in a new tab) and ask us directly.
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What should a Node.js developer know in 2026?
TypeScript, asynchronous programming and the event loop, a framework such as NestJS, Fastify or Express, SQL with an ORM or query builder, a queue for background work, runtime validation, and service-level testing. Node now ships its own test runner and can run TypeScript files directly, so the toolchain is lighter than it was a few years ago.
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Is Node.js a good choice for our back end?
It suits I/O-heavy work: APIs, integrations, real-time connections, and teams that already write TypeScript on the front end. It is a poor fit for heavy computation in the request path, such as image processing or numerical work, unless that work is moved to worker threads or to a service in another language.
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Do we need a Node.js developer or a full-stack developer?
Hire a Node.js developer when the server side is the hard part: several integrations, real-time features, growing load, or an API that many clients depend on. Hire a full-stack developer when the product is small enough for one person to carry a feature from the database to the screen at reasonable depth in both.
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How do you assess Node.js skills specifically?
In four stages. We review back-end work the candidate has shipped, set a timed test that covers asynchronous JavaScript, TypeScript, HTTP and SQL with a coding exercise, hold a technical conversation with our engineering team about a service they owned, and then review everything together to assign an engineering level.
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What does a Node.js developer in Africa cost?
For remote backend roles with US, UK and EU companies, indicative annual salary ranges are $28,000–$50,000 at mid-level and $50,000–$80,000 at senior level. A direct hire through ProDevs also carries a one-time placement fee of 10–15% of first-year salary, with a two-week replacement guarantee.
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How quickly can we hire a Node.js developer?
For most roles you see a first shortlist within 48 hours of agreeing the brief, and most companies find their hire within two to three weeks. The hire joins on your contract, or through our outsourcing and payroll service if you have no legal entity in their country.
Talk to ProDevs
Tell us about the role.
Tell us the level and the stack. We will tell you how quickly we can put assessed Node.js developers in front of you.
Project work
Need it for a project instead?
Not every job needs a full-time hire. Describe the work, get proposals from vetted freelance Node.js developers, and pay per milestone through escrow. Free to post.