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SENDIXAServices
APIs & Integrations

Backends and integrations that hold up under real traffic.

Well-documented APIs, dependable integrations with the tools you already pay for, and backends designed for security and growth from day one.

What we build

APIs & Integrations, end to end.

01

API design & development

REST or GraphQL APIs with authentication, rate limiting, versioning and OpenAPI documentation.

02

Third-party integrations

Payments, CRMs, ERPs, accounting, logistics and messaging — connected with retries and monitoring.

03

Data pipelines & sync

Scheduled jobs, event queues and webhooks that keep systems in step without manual exports.

04

Backend hardening

Security reviews, performance profiling and database tuning for backends under strain.

What you get

Deliverables, not just hours.

Every engagement ends with things you can use, run and hand to someone else.

  • API specification (OpenAPI or GraphQL schema)
  • Authentication and role-based access control
  • Automated tests covering every endpoint
  • Logging, monitoring and alerting
  • Postman collection or client examples
  • Runbook for deployments and incidents

Typical stack

  • Node.js
  • Python
  • FastAPI
  • Django
  • Go
  • PostgreSQL
  • Redis
  • GraphQL

A good fit when

  • Staff copy data between systems by hand
  • Partners or a mobile app need a proper API
  • Your backend slows down or fails as usage grows
Questions

Asked before most projects.

All questions
Can you integrate with a system that has no API?

Often, yes — through database access, file exchange, email parsing or the vendor's export tools. We assess the options during scoping and explain the trade-offs of each.

How do you keep our APIs secure?

Authentication on every endpoint, least-privilege access, input validation, rate limiting, secrets kept out of code, and dependency scanning in CI. The OWASP API Security Top 10 is our checklist.

Need your systems to talk to each other?

Tell us what you want to build. We reply within one business day with questions or a time for a call.