Available to hire
I am a software engineer with a strong quality engineering profile, experienced in Java backend development in demanding environments such as defense and cloud migration. I am currently building a complete test landscape from the ground up as a Test Automation Engineer, from an approved test policy and strategy to Playwright automation.
Beyond my core role, I freelance as an AI training engineer, helping to deliver large software projects used to train and evaluate language models, and I hold ISTQB and Oracle certifications that underpin my approach to quality.
Skills
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Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Language
Dutch
Fluent
English
Advanced
Work Experience
Software Engineer at CIMSOLUTIONS
March 1, 2023 - PresentWorked as a Software Engineer in a DevOps team responsible for developing, testing, and deploying cloud applications. Key responsibilities included backend architecture development using Spring Boot and Hibernate, code quality assurance, security, performance optimization, and automation of builds, tests, and deployments using Azure DevOps. Participated in Agile Scrum workflows and contributed to frontend development with Angular.
Software Engineer at GMU
December 31, 2022 - July 14, 2025Developed a web application to analyze investment clusters including building a Chrome extension for data scraping, data processing into MySQL, and visualization in a Laravel app. Delivered projects involving clustering and machine learning for customer lifetime value predictions. Worked in an Agile Scrum environment with version control and project management using Git and YouTrack.
Internship Software Engineer at GMU
December 31, 2020 - July 14, 2025Contributed to the design and development of a customer lifetime value prediction MVP, utilizing Python for clustering algorithms and building dashboards for visualization. Worked on integration testing and performance optimization within the Agile team.
Internship Software Engineer at Ittica Media
June 30, 2019 - July 14, 2025Developed and integrated GPS and map functionalities for a search app used by police forces. Responsibilities included technical research, MongoDB database management, real-time data visualization, testing, and collaboration with police teams for feedback.
Full Stack Engineer at Thales Group
January 1, 2020 - PresentContributed to a classified defense project as part of a multidisciplinary Java team. Developed backend components using Java, Spring Boot, Hibernate, and Jackson. Collaborated closely with other teams to align features and interface contracts. Assisted with build and deployment processes using Jenkins and Maven. Wrote unit and integration tests using JUnit and Mockito to ensure code reliability. Worked in a high-security environment with strict coding, review, and documentation standards.
Back-End Developer at Cimsolutions
May 1, 2023 - PresentDeveloped backend components for tools supporting cloud migration strategies for clients. Responsible for implementing new Java features with Spring Boot and Hibernate. Improved API performance and handled database auditing and filtering logic. Wrote unit tests.
R&D Developer at Cimsolutions
May 1, 2023 - August 7, 2025Contributed to a microservices-based demo app for a smart community market concept. Developed REST APIs and backend logic for prediction and review services. Assisted with integration testing and deployment using Docker and Kubernetes. Participated in team demos and collaborated with testers and product owners.
Developer at MajorCapital.com
January 1, 2021 - August 7, 2025Built a Laravel web app visualizing data about investor clusters and developed a custom Chrome extension for scraping financial data. Processed and stored data in MySQL used for front-end visualizations. Though PHP was used on the frontend, data handling and structure knowledge supported future Java migration.
Intern - Customer Lifetime Value project at GMU Meppel
January 1, 2021 - August 7, 2025Implemented the RFM model in Python for Customer Lifetime Value and integrated the KMeans clustering algorithm into the MVP. Built a dashboard for CLV visualization using PHP, JavaScript, and CSS. Used PostgreSQL for data storage and fast access to customer data. Conducted testing and optimizations to ensure performance and accuracy.
Intern - Web development at Ittica Media
February 1, 2020 - August 7, 2025Assisted in designing and maintaining websites for clients. Worked on layout, styling, and simple PHP logic for websites. Collaborated with a small team and translated client feedback into site improvements.
Developer - Sarea App Proof of Concept at Police Noord-Nederland
September 1, 2019 - August 7, 2025Developed the Sarea app designed to support search operations for missing persons by providing real-time insights into areas that had already been searched. Responsible for development and integration of Map and GPS functionality.
Test Automation Engineer at EOC Netherlands
October 1, 2025 - PresentSetting up the complete test landscape from scratch, including a formally approved test policy, test strategy, and test plans; Designing and building end-to-end test automation with Playwright; Embedding structured quality processes into the development workflow; Supporting development work in addition to testing, operating in an SDET capacity; Main technologies: Playwright, C#, CI/CD
Freelance AI Training Engineer at Outlier & Mercor (Remote)
March 1, 2024 - PresentDelivering large-scale software development and QA projects used to train and evaluate large language models for leading AI platforms (clients under NDA); Reviewing, debugging, and improving complex AI-generated code and test suites across multiple languages and frameworks; Consistently received strong project reviews and repeat assignments on high-complexity projects; Flexible freelance engagement alongside full-time employment
Full Stack Engineer at Thales Group
January 1, 2024 - July 1, 2024Contributed to a classified defense project as part of a multidisciplinary Java team; Developed backend components using Java, Spring Boot, Hibernate, and Jackson; Collaborated closely with other teams to align features and interface contracts; Wrote unit and integration tests using JUnit and Mockito; assisted with builds and deployments using Jenkins and Maven; Worked in a high-security environment with strict coding, review, and documentation standards
Software Engineer — Cloud Migration at Cimsolutions
May 1, 2023 - December 1, 2023Developed backend components for a tool supporting cloud migration strategies for clients; Implemented new features in Java with Spring Boot and Hibernate; improved API performance and built database auditing and filtering logic; Wrote unit tests (JUnit, Mockito) and worked with CI/CD pipelines in Azure DevOps
Software Engineer — Community Market R&D at Cimsolutions
March 1, 2023 - May 1, 2023Contributed to a microservices-based demo application for a smart community market concept; Developed REST APIs and backend logic for prediction and review services; Supported integration testing and deployment with Docker and Kubernetes
Software Engineer — MajorCapital.com at GMU Meppel
January 1, 2021 - December 1, 2022Built a Laravel web application visualizing data about investor clusters; Developed a custom Chrome extension for scraping financial data; processed and stored data in MySQL for front-end visualizations
Internship — Customer Lifetime Value at GMU Meppel
January 1, 2021 - February 1, 2022Implemented the RFM model in Python for Customer Lifetime Value calculations and integrated a KMeans clustering algorithm into the MVP; Built a CLV dashboard on top of PostgreSQL
Internship — Ittica Media at Ittica Media
February 1, 2020 - December 1, 2020Designed and maintained client websites — HTML, CSS, PHP, JavaScript
Sarea App proof of concept at Police Noord-Nederland
September 1, 2019 - January 1, 2020Developed Map and GPS functionality for an app supporting missing-person search operations — React, PHP
Education
Bachelor's Degree at Hanze Hogeschool
January 1, 2015 - December 31, 2021HBO - ICT Software Engineering at Hanzehogeschool, Groningen
January 1, 2016 - August 7, 2025HBO-ICT Software Engineering at Hanzehogeschool Groningen
January 1, 2016 - January 1, 2021Qualifications
Robot Framework Training
January 1, 2024 - December 31, 2024Cloud Native DevOps Java Software Engineering
January 1, 2023 - December 31, 2023ISTQB Foundation Level (CTFL)
January 1, 2025 - December 31, 2025Java SE 8 Programmer Oracle Certified Associate (OCAJP)
January 1, 2024 - December 31, 2024Professional Scrum Master™ I Certification
January 1, 2023 - December 31, 2023ISTQB Foundation Level (CTFL)
January 1, 2025 - August 7, 2025Oracle Certified Associate Java SE 8 Programmer (OCAJP)
January 1, 2024 - August 7, 2025Professional Scrum Master I Certification
January 1, 2023 - August 7, 2025ISTQB Certified Tester, Foundation Level (CTFL)
January 1, 2025 - July 6, 2026Oracle Certified Associate, Java SE 8 Programmer (OCAJP)
January 1, 2024 - July 6, 2026Professional Scrum Master I (PSM I)
January 1, 2023 - July 6, 2026Industry Experience
Software & Internet, Financial Services, Government, Professional Services
Skills
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Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
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