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In4Matic • Brussels, Brussels-Capital, Belgium
Role & seniority: Technical Tester (seasoned, 5+ years experience)
Stack/tools: SQL Server and/or Oracle; API testing (REST & SOAP) with Postman/Swagger/ReadyAPI/SOAP UI; frontend automation (Playwright); test automation and CI (Jenkins, Azure pipelines); defect tracking (Jira/Xray); source control (Git/Bitbucket); data formats (XML/JSON); databases (Cosmos DB a plus)
Own end-to-end testing lifecycle across Test and Acceptance environments for functional and non-functional requirements
Lead API testing initiatives, validate data workflows, and manage API/endpoint quality (authentication, error handling)
Manage defect lifecycle, design test plans (Sanity, Smoke, Integration, Regression, E2E), and contribute to QA reporting and process improvements
5+ years as a Technical Tester; 2+ years API integrations (REST/SOAP)
Proficiency with SQL Server and/or Oracle; strong SQL skills
Experience with API test tools (Postman, Swagger, ReadyAPI, SOAP UI); Jira/Xray; Git; Jenkins
Playwright or equivalent frontend automation experience; SDLC and structured testing methodologies
Clear English communication; strong defect prioritization and risk identification
Cosmos DB experience; French or Dutch language proficiency
Location & work type: Hybrid work model; minimum two days onsite per week
We’re looking for a seasoned Technical Tester to join our client’s high-performing delivery team. This is an exciting opportunity for a quality-driven consultant who thrives at the intersection of manual testing, database validation, and API integration. You will play a pivotal role in safeguarding the quality of complex systems, driving improvements in QA processes, and acting as a trusted partner to product and development stakeholders.
The Role
As a Technical Tester, you will take ownership of the end-to-end testing lifecycle across multiple environments (Test and Acceptance), ensuring both functional and non-functional requirements are clear, feasible, and thoroughly validated. You will operate across manual and automated testing initiatives, with a strong focus on database and API testing, while contributing to process enhancement and quality reporting.
Key Responsibilities
Analyze, challenge, and refine functional and non-functional requirements Design and lead structured test plans covering Sanity, Smoke, Integration, Regression, and End-to-End testing Manage the complete defect lifecycle, ensuring accurate documentation, prioritization, and follow-up Perform advanced database testing using SQL Server or Oracle (queries, stored procedures, PL/SQL validation) Validate and manage data workflows using XML and JSON inputs from source systems Lead API testing initiatives (REST & SOAP), including authentication and error handling validation Execute API testing using tools such as Postman, Swagger, ReadyAPI, or SOAP UI Contribute to API and frontend test automation initiatives (Playwright preferred) Create and manage automated test jobs and campaigns using Jenkins or Microsoft Azure tools Produce detailed QA reports and communicate progress clearly to stakeholders Continuously improve QA methodologies and collaborate closely with cross-functional teams
The Ideal Candidate
Experience & Background
Bachelor’s or Master’s degree in IT (or equivalent professional experience) Minimum 5 years of experience as a Technical Tester At least 2 years of hands-on experience with API integrations (REST, SOAP) At least 2 years of experience with relational databases
Technical Expertise
Strong command of SQL Server and/or Oracle Experience with Cosmos DB is a plus Solid knowledge of SDLC and structured testing methodologies Proficiency with tools such as ReadyAPI, Swagger, Postman, Jira/Xray, Git/Bitbucket, Jenkins Experience in API test automation and frontend automation (Playwright preferred)
Competencies
Strong analytical skills with the ability to identify risks and improvement opportunities High level of accuracy in test design and defect reporting Proven ability to manage and prioritize defects effectively Collaborative mindset, bridging manual and automation testing approaches Clear and structured communication skills in English Professional proficiency in French or Dutch Available for a hybrid work model (minimum two days onsite per week)