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Mathias KeulenMK

Mathias Keulen

QA engineer, SDET

€700/day
19 projects
Maastricht-Airport, NL
8-15 years

Average response time: 1 hour

About Mathias

Hi there, welcome to my profile. I'm a technical tester with experience in the financial and energy sector, working for multinationals in Belgium, Netherlands and France.

My academic and professional career choices have one thing in common; I try to work on my weaknesses and challenge myself to grow. I constantly want to learn new things and don't think there is one way to tackle a problem (isn't that what being a tester is all about?), but rather try to approach it from different perspectives to gather new insights. A good puzzle is therefore the biggest gift any project can give to me.

In my spare time I like to travel. Adventure and other cultures all interest me and I am not scared to experience new things. You will not find me in a five star all-inclusive hotel, but among the locals. When I am not catching the next plane, I like to work on classic motorcycles and cars. Last but not least, I enjoy fitness and running, not afraid to go the extra mile.
  • Dutch

    Native or bilingual

  • French

    Native or bilingual

  • English

    Native or bilingual

  • German

    Conversational

  • Italian

    Basic

Can work on-site
Maastricht-Airport (up to 50km)

Experience

  • Nieuwestroom
    Test Automation Engineer
    ENERGY AND UTILITIES
    March 2025 - Today (1 year and 3 months)
    Maastricht, Netherlands
    Op dit moment verantwoordelijk voor:
    - Backend automation in C# met xUnit
    - Backend integration tests met Test Containers
    - API test automation via Postman
    - Frontend automation via Storybook interaction testing, Playwright E2E
    playwright Postman Storybook Angular SQL
  • Engie IT SA
    QA lead
    ENERGY AND UTILITIES
    August 2023 - Today (2 years and 10 months)
    Parijs, France
    At Engie, my tasks are mainly:

    - Lead refinements
    - Test case writing
    - Preparing component test scenarios for TDD-like approach
    - Test execution
    - Test automation
    - Release management
    - Backlog management
    - Stakeholder management
    - Reliability management
    - Define and execute QA strategy to follow

    As teamlead of a 7-man devops team. In this broad position I take on various tasks which are not limited to testing, butrather in a more devops tester role.
    K6 playwright storybook noSQL GitHub Postman TypeScript MongoDB Cypress Cucumber Gherkin Octopus
  • EQUANS Nederland
    Test Engineer
    ENERGY AND UTILITIES
    May 2020 - July 2023 (3 years and 3 months)
    Maastricht, LB, Netherlands
    At Equans I fulfil the following roles simultaneously:
    - QA lead
    - Test automation engineer
    - Scrum Master

    My tasks consisted of
    - Release management
    - Backlog management
    - Writing manual tests and executing bi-weekly regression testing
    - Writing Gherkin files and automating them in Cypress with typescript
    - Jenkins pipeline adjustments in Groovy
    - Maintaining test data across environments
    - Monitoring performance in AWS & Dynatrace
    - Setting up performance testing with artillery

    - Perform code reviews on pull requests from other testers
    - Set up api testing through postman with newman in jenkins
    GitHub noSQL Jenkins Cypress Cucumber gherkin AWS TypeScript

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Education

  • Master of Science
    United Nations University-MERIT
    2017
    Master of Science (MSc), Public policy
  • Bachelor of Science in Business Management
    Hogeschool Zuyd (Maastricht, Heerlen, Sittard)
    2013
    Bachelor, International Business Management

Certifications

  • ISTQB foundation
    isqi group
    2017
    QA Testing Functionele Test User Testing Testing
  • ISTQB Certified Tester - Extension Agile Tester
    Isqi group
    2018
    QA Testing Agile Methode

Skill set

Categories