Hire Node.js developers for APIs, integrations and real-time back ends
TypeScript engineers who build Node.js APIs, connect your systems through webhooks and queues, and add live features to your product. They work in your repository and your cloud accounts, with types shared from the database to the browser.
- Vetted in four stages
- In place within days
- Your codebase, your tools, your standups
- Code and IP transferred to you
- One UK company accountable
What our Node.js developers build
- APIs for web and mobile appsREST and GraphQL APIs in NestJS, Fastify or Express, with every input validated at the edge and an OpenAPI description your other teams can build against.
- Integrations and webhooksConnections to payment, CRM, e-commerce and accounting platforms. Signatures are checked, duplicate deliveries do no harm, and failed calls go to a queue to be retried.
- Real-time featuresLive dashboards, notifications, chat and presence over WebSockets, with Redis carrying messages between servers so it still works with more than one instance running.
- Serverless back endsAWS Lambda and Azure Functions for event-driven work and uneven traffic. Cold starts, timeouts and cost are part of the design rather than a surprise later.
- TypeScript back ends shared with the front endA monorepo where the API, the web app and the background workers share types and validation schemas. Change a field once and the compiler finds every place it matters.
Node.js skills we vet for
Node.js and TypeScript
- Node.js
- TypeScript
- The event loop and streams
- Worker threads
- npm and pnpm workspaces
Frameworks and APIs
- NestJS
- Fastify
- Express
- GraphQL
- OpenAPI
- Zod
Data and messaging
- PostgreSQL
- Prisma
- Redis
- BullMQ
- SQS and Service Bus
- WebSockets
Cloud and delivery
- AWS Lambda
- Azure Functions
- Docker
- CI/CD
- OpenTelemetry and logging
What the practical task checks for Node.js
- Respect for the event loop: no CPU-heavy work blocking requests, and knowing when it belongs in a worker or a queue.
- A webhook handled properly: signature verified, a repeated delivery processed only once, and failures retried.
- Error handling with no unhandled promise rejections, typed errors and the right HTTP status codes.
- Typed boundaries: input validated with a schema at the edge, and types shared rather than copied.
- Tests that run against a real database, or against a contract for the external API being called.
How we vet Node.js developers
Four stages, before anyone joins your work. You meet the people we propose before anything is signed.
- Portfolio & experience reviewRelevant projects, technical depth and hands-on experience are reviewed first.
- Technical assessmentA practical task tests code quality, problem-solving and the stack the project uses.
- Quality & team reviewSenior engineers review the work for implementation quality, communication and collaboration.
- Final approvalConfirmed against the project's requirements and Backendz's quality standards before joining a team.
Engage the way the work needs
- Full-time on your teamAn engineer who works with you every day, in your repository, your tickets and your standups. They take work from your backlog like anyone else on the team.
- Part-timeA share of an engineer's week for work that does not need a full-time seat, such as keeping an integration running or a steady flow of smaller changes.
- For a sprintAn engineer or two for a defined piece of work: a feature, a migration step, an audit. The scope is agreed up front and the work is handed back at the end.
- For the long termA dedicated team that grows with your roadmap. The same engineers stay on your product, so what they learn about it stays with you.
Hiring Node.js developers: questions we are asked
Do your Node.js developers write TypeScript?
Yes, by default. We write Node.js back ends in TypeScript with strict settings, and share types and validation schemas with the front end where the two live together.
Should we use NestJS, Fastify or Express?
NestJS for a larger API with several developers, where its structure pays off; Fastify for a fast, lean service; Express when you already have one and it works. We would rather extend a sound Express app than move it for the sake of it.
Can they build real-time features?
Yes. Our Node.js engineers build live dashboards, notifications and chat over WebSockets, using Redis or a managed message service so the feature keeps working across several servers.
Is Node.js suitable for heavy processing?
Not on the request path, but it can run it elsewhere. CPU-heavy work such as large file processing goes to worker threads or a background queue, so the API stays responsive; for heavy data or ML work, Python is often the better tool.
Can they work on serverless back ends?
Yes. They build on AWS Lambda and Azure Functions, and plan for cold starts, timeouts, retries and cost from the start, including when a long-running service is the cheaper choice.
Still running on workarounds?
Book a 30-minute call with an engineer. Tell us what's breaking and we'll tell you what we would build, how long it would take and what it would cost, before you commit to anything.
