Senior Functional Tester

Start Date: Asap

End Date: 31/12/2026

Location: Brussel

Description:

We are looking for a Senior Functional Tester to ensure that developed software operates as expected on both technical and functional levels. The role involves supporting the software design and delivery team with your expertise, conducting functional and non-functional testing, end-to-end testing with external partners, and providing end-user support for acceptance testing. You will contribute to the continuous improvement of testing processes and the implementation of quality assurance. Reporting to the Software Team Leader, you will work closely with functional analysts, developers, and engineers.

Responsibilities:

• Define the test strategy

• Review business requests and analysis documents
• Create and execute test cases, scenarios, and plans
• Follow up on defects and issues and write test reports
• Automate test cases using various tools
• Support teams and assist in estimating test effort and test plans for projects
• Improve processes and test deliverables

Technical Skills:

• Bachelor's degree or higher

• Minimum 5 years of relevant experience in software testing (manual and automated)
• Experience with manual testing, API testing, and building test strategies
• Strong knowledge of testing processes and methodologies (ISTQB certification is an asset)
• Experience in testing Java services, web services, REST APIs, proxy services, and open standards such as XML, XSD, WSDL
• Solid experience in analyzing and modeling complex processes and workflows
• Knowledge of tools such as Jira, Xray, and ReadyAPI; Katalon or Selenium are a plus
• Experience working in Agile environments
• Experience with Groovy Script or equivalent
• Familiarity with public administration systems is a plus

Soft Skills:

• Fluent in Dutch/English or French/English, with a good understanding of the other language

• Team player, comfortable sharing knowledge and best practices
• Attentive to details, with strong analytical and communication skills
• Result-driven, maintaining quality without compromising speed