Backend & API

The Boring Important Stuff

Nobody downloads your app because of the backend. But if the backend is slow, unreliable, or insecure, they will uninstall it pretty quickly. We build backends that are fast, secure, and maintainable — and that scale when you need them to without requiring a rewrite.

Our Backend Stack

Node.js with Express or Fastify for most projects. Python with FastAPI when the project involves data processing or ML integration. PostgreSQL for the database almost always. Redis for caching and real-time features. Deployed on AWS or Google Cloud depending on what else you are using.

API Design

REST for most apps because it is simpler to debug and more developers understand it. GraphQL when the app has complex, nested data relationships and you want to avoid over-fetching. We document every endpoint with OpenAPI/Swagger so your future developers do not have to guess what our API does.

Authentication and Security

JWT-based auth with refresh tokens. Social login integration (Google, Apple, Facebook). Rate limiting, input validation, SQL injection prevention, and CORS configuration. We follow OWASP guidelines because getting hacked is a very expensive and embarrassing way to learn about security.

From 193,40 EUR for a custom backend. Often bundled with app development at a better rate.