Medior Test Specialist

Medior Test Specialist (Freelance) - 12 Months - Hasselt, Belgium

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About the Role

We’re seeking a Medior Test Specialist (Freelance) to join our client’s multidisciplinary test team, driving the evolution of test automation within complex enterprise environments. This is a freelance opportunity for 12 months, based in Hasselt, Belgium. You’ll play a pivotal role in shaping sustainable, scalable test automation architecture, leveraging Tricentis Tosca to elevate software quality and reliability. Your expertise will directly impact the delivery of robust, future-ready solutions.

Why This Role Matters

This role is mission-critical: you’ll be at the forefront of advancing test automation, ensuring our client’s software delivery is both high-quality and resilient. By defining automation strategies, integrating best practices, and coaching teams, you’ll help solve the challenge of delivering reliable, scalable software in a fast-paced, agile environment. The stakes are high — your leadership will drive a shift-left testing culture and set new standards for excellence.

What You’ll Be Doing

• Lead the definition and implementation of test automation strategies, with a focus on Tricentis Tosca.


• Design and maintain a sustainable, scalable test automation architecture for enterprise projects.


• Advise on the selection and prioritization of test scenarios for automation.


• Integrate test automation seamlessly within the software delivery lifecycle, including CI/CD pipelines (Azure DevOps or similar).


• Champion shift-left testing principles and embed quality at every stage of development.


• Coach and mentor development teams, transferring knowledge and best practices in test automation.


• Define and enforce Tosca governance, automation standards, and quality guidelines.


• Collaborate closely with business, IT, vendors, and the broader test organization to drive continuous improvement.


• Support the execution and coordination of test activities across functional, integration, end-to-end, regression, release validation, and API testing.

Technical Skills

• Demonstrable experience as a Test Specialist (Medior level).


• Hands-on expertise with Tricentis Tosca in complex enterprise environments.


• Proven experience with Tosca Server and Commander architecture, configuration, and management.


• Strong background in formal test methods and techniques.


• Experience defining and implementing Tosca governance, automation standards, and quality guidelines.


• Integration of Tricentis Tosca within Azure DevOps CI/CD pipelines or comparable DevOps platforms.


• Tricentis Tosca certifications (AS1, AS2, AE1, TDS1, TDS2).

Language Proficiency

• Dutch at European CEFR level C2 (required).

Other Requirements

• Demonstrable experience as a tester in Agile/Scrum projects.


• Experience writing test scenarios.


• Excellent communication skills and a hands-on, proactive mentality (to be demonstrated during interview).