(Node.js Development)
Node.js backends
and APIs built
to scale.
WebAnts is a London Node.js development agency building REST APIs, GraphQL backends, and real-time applications, TypeScript throughout, clean architecture, and CI/CD deployed from day one. No prepayment required.
Free quote
Tell us about your
Node.js project.
Flat written quote, same day.
What we do
WebAnts is a London web development agency specialising in Node.js backend and API development. We build REST and GraphQL APIs, real-time systems, and serverless functions for startups and scale-ups that need reliable, well-documented backend infrastructure.
TypeScript throughout. Tests as a deliverable, not an afterthought. Documentation your future developers will actually thank you for.
100+
projects shipped
1.8×
faster than industry average
4.9★
rated on Google, Clutch & Upwork
£0
deposit required
Node.js services
Everything Node.js,
done properly.
01
REST API Development
Well-documented, versioned REST APIs with Express or Fastify, authentication, rate limiting, error handling, and auto-generated OpenAPI docs included as standard.
02
GraphQL API Development
Type-safe GraphQL APIs with Apollo Server or Yoga, real-time subscriptions, DataLoader batching, and schema-first design for clean client-server contracts.
03
Real-time Applications
WebSocket-powered applications with Socket.io, live chat, presence indicators, collaborative tools, real-time dashboard updates, and notification systems.
04
Serverless Functions
Event-driven serverless functions on Vercel, AWS Lambda, or Cloudflare Workers, webhook handlers, background jobs, and integrations without managing server infrastructure.
05
Database Design & Architecture
PostgreSQL, MongoDB, or Redis schema design, query optimisation, migration strategies, and indexing for data models that need to grow without breaking.
06
Authentication & Identity
JWT, OAuth 2.0, and session-based auth, with role-based access control, multi-tenancy, and third-party IdP integrations (Auth0, Clerk, Supabase Auth).
07
Third-party API Integrations
Connect your Node.js backend to Stripe, Twilio, SendGrid, Slack, HubSpot, or any REST/webhook-based service, cleanly abstracted and easy to test.
08
Node.js Performance & Refactoring
Profiling slow endpoints, fixing N+1 queries, adding caching layers (Redis), and refactoring legacy Node.js codebases to modern TypeScript with proper error boundaries.
How we work
Four phases.
Architecture first.
01
Discovery
A free 30-min call to scope your data model, auth strategy, external integrations, and performance requirements. Written proposal and flat quote the same day.
02
Architecture
API design (OpenAPI spec), database ERD, auth flow, and tech stack confirmation, all documented and agreed before a line of code is written.
03
Build & Test
TypeScript throughout. Unit and integration tests. Weekly staging deployments. CI/CD pipeline from day one. Docker container for local development.
04
Launch & Docs
Production deployment, OpenAPI/Swagger documentation, Postman collection, and a codebase walkthrough. Full repo handover, you own everything.
What you get
Deliverables
- ↳Source code on GitHub, fully owned
- ↳TypeScript throughout
- ↳OpenAPI / Swagger documentation
- ↳Postman collection
- ↳Unit and integration test suite
- ↳Docker setup for local dev
- ↳CI/CD pipeline (GitHub Actions)
- ↳Two weeks post-launch support
Toolkit
- Node.js
- Express
- Fastify
- NestJS
- GraphQL
- Apollo Server
- PostgreSQL
- MongoDB
- Redis
- Supabase
- Prisma
- Docker
- Vercel
- AWS Lambda
- Zod
Who we build for
Node.js for
ambitious products.
Logistics & Delivery
Media Platforms
Internal Tooling
FAQs
Common
questions.
Node.js vs other backends, why Node.js?
Node.js is an excellent choice for API servers, real-time applications, and serverless functions. Its non-blocking I/O model handles high concurrency efficiently, the npm ecosystem is unmatched in breadth, and TypeScript support is first-class. For CPU-intensive workloads (video processing, heavy ML) we might recommend a Python or Go service, we'll advise on the call.
Do you write tests for your Node.js code?
Yes. We write unit tests for business logic (Vitest or Jest) and integration tests for API endpoints (Supertest). Test coverage is part of every deliverable, not optional. We also set up the CI pipeline so tests run on every pull request.
Can you work with our existing Node.js codebase?
Yes. We can add features to an existing Express or NestJS codebase, add TypeScript to a JavaScript project, refactor a slow query layer, or add a new service to a monorepo. We follow your existing patterns and document what we change.
How much does a Node.js API project cost?
A straightforward REST API with 10–20 endpoints, auth, and a PostgreSQL database starts from around £5,000. A GraphQL API with real-time subscriptions and complex business logic typically starts from £10,000. Flat quote after a free discovery call.
Do you set up CI/CD and deployment?
Yes. Every project ships with a GitHub Actions workflow for linting, testing, and deployment. We deploy to Vercel (for serverless), Railway, Render, or AWS (EC2/Lambda) depending on your requirements. Docker containers for every service so deployments are reproducible.
Do you use TypeScript or plain JavaScript?
TypeScript by default. We've seen too many Node.js projects become unmaintainable after six months of plain JavaScript. TypeScript adds the type safety, IDE support, and refactoring confidence that make a codebase pleasant to work in long-term. We can work in plain JavaScript if your codebase requires it.
Get started
Ready to build your
Node.js backend? →
Free 30-minute discovery call. Flat written quote. No prepayment.
WebAnts Ltd · London, UK · hello@webants.io · +44 20 3983 9795
Client stories
4.9★ across Google, Clutch & Upwork. 100+ projects. 14 countries.
“WebAnts built something better than I'd ever imagined — shipped faster than any agency I've worked with.”
LaTisha Ebanks North Pointe Marketing
Dr. Nadish Ravindran
Founder · Elite Scholars
“The team were methodical, fast and honest. Exactly what we needed. No surprises, just results.”
Guillaume Etlin Bro Bread
“We ranked #1 in three London postcodes within 90 days of launching with WebAnts. The ROI has been remarkable.”
Ahmed Hassan Papa Doner
Rachel Piccoli
Founder & CEO · Humming Bliss Acres
“WebAnts delivered our marketing site faster than any agency we'd worked with before. Clean build, great communication throughout.”
Patrick Bishop ReRoute Americas
“Incredible attention to detail. The site launched under budget and our leads doubled in the first month.”
Tom Walker Access Super
“WebAnts built something better than I'd ever imagined — shipped faster than any agency I've worked with.”
LaTisha Ebanks North Pointe Marketing
Dr. Nadish Ravindran
Founder · Elite Scholars
“Incredible attention to detail. The site launched under budget and our leads doubled in the first month.”
Tom Walker Access Super
“The team were methodical, fast and honest. Exactly what we needed. No surprises, just results.”
Guillaume Etlin Bro Bread
“We ranked #1 in three London postcodes within 90 days of launching with WebAnts. The ROI has been remarkable.”
Ahmed Hassan Papa Doner
“WebAnts delivered our marketing site faster than any agency we'd worked with before. Clean build, great communication throughout.”
Patrick Bishop ReRoute Americas
Rachel Piccoli
Founder & CEO · Humming Bliss Acres
Verified ratings
About WebAnts Node.js Development London
WebAnts is a London web development agency specialising in Node.js backend and API development. Services: REST APIs, GraphQL APIs, real-time applications, serverless functions, database architecture, authentication systems, third-party integrations, and performance refactoring. TypeScript throughout. 4.9★ Google, 5.0 Clutch. London, UK. No deposit.