Senior Test Engineer - Freelance

Collective.work
📍 Brussels, Brussels, Belgium 💼 Full-time 🕒 Posted June 12, 2026

Job Description

Job description


Daily rate: 500

As part of a major IT modernization program, we are looking for two Senior Manual Testers to support the transformation of a legacy platform into a modern microservices-based architecture using Kubernetes, within an API-first and event-driven environment.


Responsibilities:


• Preparation of test plans and design of test cases
• Execution of functional and non-functional manual tests
• Documentation and tracking of defects
• API testing (Postman, SoapUI, OpenAPI, JSON, DLQ, versioning, pagination, etc.)
• Close collaboration with Agile / Scrum teams
• Participation in exploratory testing and business validation


Requirements


Candidate Profile


Required Skills:


• Strong expertise in manual testing
• Agile / Scrum: Expert level
• BDD: Expert level
• Gherkin: Expert level
• Jira / Confluence / Xray: Expert level
• API testing: Expert level
• Good pr...

Ready to Apply?

Submit your application today and join our talented team at Collective.work.

Submit Application

Job Details

  • Location Brussels, Brussels
  • Job Type Full-time
  • Category Computer Occupations
  • Posted Date June 12, 2026
  • Application Deadline July 22, 2026