API & Backend Test Automation
Most defects are cheaper to catch below the UI. We build fast, reliable backend suites that verify behaviour, contracts and data, so problems surface minutes after a commit.
What we cover
- Functional API testing for REST, GraphQL and gRPC
- Contract testing between services and consumers
- Integration tests with real databases, queues and caches in containers
- Event-driven and asynchronous workflow testing (Kafka, RabbitMQ, SQS)
- Authentication, authorisation and negative-path coverage
- Schema validation and backward-compatibility checks
- Service virtualisation and mocking of third-party dependencies
From first call to running tests
- 1
Discovery call
We look at your product, stack, current tests and release process, and agree on the outcome you need.
- 2
Audit & plan
You get a short written plan: what to automate first, the framework and pipeline design, and a fixed scope.
- 3
Build & integrate
We build the suite and pipeline in your repo in short iterations, with tests running in your CI early on.
- 4
Handover or run
We train your team and hand over, or stay on to maintain and extend the suite as your product grows.
API & Backend Automation: common questions
Which languages do you write backend tests in?
Python, TypeScript/JavaScript and Java are the most common. We normally match the language your backend team already uses so they can maintain the tests.
What is contract testing and do we need it?
Contract testing verifies that a service and its consumers agree on request and response formats without running the whole system. If you have several services or teams releasing independently, it catches breaking changes far earlier than end-to-end tests.
Can you test without a stable test environment?
Yes. We use containers to start the service with its real dependencies inside the pipeline, and mock the third parties, so tests do not depend on a shared environment.
Often combined with
QA AI Pipelines & CI/CD
We design and integrate testing pipelines: parallel runs, smart test selection, flaky-test triage, AI failure analysis and quality gates on every pull request.
GitHub Actions, GitLab CI, Jenkins
Performance & Load Testing
Load, stress and soak tests with k6, JMeter or Gatling, with performance budgets enforced in your pipeline.
k6, JMeter, Gatling
Frontend & E2E Automation
Stable end-to-end and component tests with Playwright, Cypress or Selenium, covering cross-browser, visual regression and accessibility.
Playwright, Cypress, Selenium
Tell us what you want to stop testing by hand
A few lines about your product, stack and biggest quality problem are enough. We will reply by email, usually within one business day, to set up a discovery call.
- No obligation, no sales script
- A concrete plan and a fixed scope
- NDA available on request
Or talk to us directly