3Amigos

APIs and backends built to be depended on

The backend is where reliability is won or lost. We build REST and GraphQL APIs, microservices, queues, and integrations in PHP, Node.js, and Python, documented, tested, and monitored from day one.

Why teams pick us for API & Backend Development

Contract-first design

OpenAPI specs and typed schemas before code, so your frontend, mobile, and partner teams can build in parallel.

Integration specialists

Payments, OAuth, shipping, CRMs, and messy third-party APIs, we've integrated them all, including the poorly documented ones.

Built for 3 a.m.

Structured logging, health checks, alerting, and graceful degradation, because APIs fail at night and should recover without you.

What you can buy

  • REST and GraphQL API design and build
  • Microservices and event-driven architectures (Kafka, queues)
  • Third-party integrations: payments, OAuth, CRMs, logistics
  • API documentation, versioning, and SDKs
  • Load testing, monitoring, and scaling

Track record

From enterprise engineering at Insider and Rolls-Royce projects to Symfony APIs and OAuth-heavy platform integrations (Upwork, Google, payment gateways), our backends carry real production traffic daily.

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Questions we hear

REST or GraphQL, which should we use?

REST for public APIs and simple resource models; GraphQL when many clients need flexible queries over rich data. We'll recommend one based on your consumers, not fashion.

Can you integrate with our legacy systems?

Yes. We regularly wrap legacy databases and SOAP/XML systems behind clean modern APIs so new products can move fast without a risky rewrite.

How do you ensure API security?

OAuth2/JWT auth, rate limiting, input validation at every boundary, secrets management, and dependency scanning, plus penetration-test support before major launches.

Ready to scope your project?

Free discovery call, written scope, and a fixed quote within 48 hours.

Start with API & Backend Development