Expert Test Automation Engineer (Cloud & API)
Brussels-Capital
Digital - Testing and QA
Work experience: 10+
Reference number: 92925

You will join a large-scale digital modernization program focused on building and operating a mission-critical, cloud-native platform. The environment is highly technical and includes microservices, APIs, zero-trust security, and modern CI/CD pipelines. As a Senior Test Automation Engineer, you are responsible for defining and operationalizing a robust, automated testing strategy covering functional, technical, performance, security, and end-to-end testing. You work as a core member of an agile delivery team and collaborate closely with developers, architects, analysts, and business stakeholders to ensure that quality is embedded throughout the delivery lifecycle.

What You’ll Do

  • Design and maintain an agile, cloud-ready test strategy aligned with microservices and API-based architectures
  • Translate the test strategy into an operational, automated test plan integrated into CI/CD pipelines
  • Implement and maintain automated test suites covering:
    • API contract, functional, performance, and security testing
    • UI and end-to-end user flows
    • Integration between microservices and external systems
  • Validate business logic, data integrity, and system behavior across distributed services

  • Perform performance, load, and stress testing to validate scalability and resilience

  • Contribute to monitoring, logging, and observability setups to support quality and diagnostics

  • Actively participate in all agile ceremonies (planning, refinement, reviews, retrospectives)

  • Continuously improve testing tools, frameworks, and practices within the team

What are we looking for?

  • 10+ years of hands-on experience in software testing and quality engineering
  • Strong experience with test automation in modern software environments
  • Cloud-native testing experience, preferably on Microsoft Azure
  • API testing using dedicated frameworks and tools (e.g. BRUNO or equivalent)
  • UI test automation, preferably with Cypress, and solid understanding of the HTML DOM
  • Performance and load testing using tools such as JMeter and/or Gatling
  • Test-Driven Development (TDD) and integration testing practices
  • Experience integrating tests into CI/CD pipelines (preferably Azure DevOps)
  • Programming experience with:
    • Java (SE / SE 10+)
    • Python and/or JavaScript
    • Bash and/or PowerShell
  • Experience with version control, pull requests, and code quality tooling

  • Experience working in large, mature agile delivery teams

Nice-to-Have Experience

  • Contract testing, mocking, and service virtualization
  • Security testing in environments with authentication, authorization, and encryption
  • Observability and monitoring tools (e.g. Grafana)
  • NoSQL databases
  • Experience with API and microservice design
  • Event-driven architectures
  • Domain-Driven Design (DDD) or Behavior-Driven Development (BDD)

What do we offer?

Contract: Freelance or Perm (a hairstyle produced by setting the hair in waves or curls and then treating it with chemicals so that the style lasts for several months.)

Duration: 01/04/2026 – 31/03/2027

Location: Brussels 

Work mode: Hybrid (minimum 3 days on-site per week)

Kenneth Van Cleynenbreugel
Business & Talent Consultant
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