Scalable, Secure Node.js Backends & APIs

From a single REST API to a microservices fleet. Typed end-to-end, tested, observable, and ready for traffic.

What we build

Production Node.js backends powering mobile apps, web dashboards, and internal tools. TypeScript end-to-end. Tested with Vitest. Deployed with proper CI/CD, monitoring, and rollback. We've shipped Node.js APIs handling millions of requests a day.

What We Build

Node.js Backend projects we deliver

REST and GraphQL APIs

Type-safe, documented, versioned. With auth, rate limiting, and pagination handled the right way the first time.

Real-time backends

WebSockets, SSE, presence — for chat, collaboration, dashboards, and live notifications.

Microservices and queues

Service decomposition with BullMQ / SQS, with proper observability so you can actually debug a distributed system.

Integrations and webhooks

Stripe, Twilio, SendGrid, OAuth providers — wired up with idempotency and retry logic.

Process

How we approach a project

  1. API design first

    We design endpoints and contracts in OpenAPI before writing code. Frontend teams can mock against the spec immediately.

  2. Build with TS, Vitest, and Zod

    Strict TypeScript, runtime validation at boundaries, tested before merge. No 'let it crash' culture.

  3. Deploy with observability

    Railway / Fly / AWS, with logs, metrics, and traces (OpenTelemetry) wired from day one.

  4. Document and hand over

    OpenAPI spec, runbooks for the on-call you might one day hire, and architecture diagram you can read.

Tech & Tools

What we use

Why DEVNIXS

Why pick us for Node.js Backend

End-to-end TypeScript

From DB to API to client. Refactors are safe, edge cases are caught at compile time.

Testing is a first-class citizen

Unit, integration, and contract tests. We don't ship endpoints we haven't tested.

Production-mindset from day one

Logging, monitoring, error tracking, alerting — set up at the start, not bolted on after the first outage.

See It In Action

Real projects, real metrics

Browse the portfolio for case studies — including ones built with this exact stack.

FAQ

Common questions

  • Why Node.js over Python / Go / Rust?

    If your team is JS-fluent or you're shipping a Node-friendly stack (Next.js, Flutter with REST, etc.), Node is the lowest-friction option. We'll happily recommend Go or Python if your specific case calls for it.

  • Do you handle DevOps?

    Yes — Vercel, Railway, Fly.io, AWS, GCP. We can also work with your existing platform team.

  • How do you handle authentication?

    Supabase Auth, Clerk, or custom JWT — picked based on your data residency, roles model, and existing accounts.

  • Can you migrate from another stack?

    Yes — we've done strangler-fig migrations from Rails, PHP, and Django to Node.js with no downtime.

  • Will I be locked in to your code style?

    No. We follow conventional patterns (Express / Fastify), documented, with a README that any Node dev can pick up in an hour.

Ready to Build Your Dream App?

Let's discuss your project in a free 30-minute discovery call. No commitment required.