Utrecht, Veenendaal

Work Hours
Monday to Friday: 9am – 5pm
Weekend: 10am – 5pm


I lead a project for Qfact focused on developing a Data-Integrity service, a crucial initiative aimed at ensuring the reliability of software behavior and data integrity. The objective was to create a robust service capable of detecting and repairing data corruption, thereby significantly reducing the customer support load and enhancing the overall reliability of the system.

Project Description

The primary goal of this project was to design and implement a comprehensive Data-Integrity service from the ground up. This service monitored software behavior, identified unintended actions, and repaired corrupted data, ensuring the system’s reliability and integrity.

Key tasks included:

  • Research: Investigating best practices for data integrity and reliability.
  • Implementation: Leading the development and integration of the service within the existing event-driven architecture.

The service needed to be robust and adaptable, achieved through research and stakeholder interviews. This approach ensured that the service could effectively address current and future integrity challenges.

Challenges Faced

The project presented several challenges:

  • Reliability: Ensuring the service could reliably detect and repair data corruption.
  • Integration: Seamlessly integrating the Data-Integrity service with the existing event-driven architecture.
  • User Requirements: Accurately capturing and addressing user needs for maintaining data integrity.

These challenges were tackled through a combination of thorough research, stakeholder engagement, and iterative testing and refinement.

Technologies and Tools Used

The project utilized the following technologies and tools:

  • Python: For developing the Data-Integrity service.
  • Eventstore: Used to track chains of behavior and supporting the integrity checks.

These tools were chosen for their capability to handle complex data integrity tasks and their compatibility with the existing infrastructure.

Key Features or Achievements

The project’s key features and achievements include:

  • Data-Integrity Service: Developed a Python-based service for monitoring and repairing data corruption.
  • Eventstore Integration: Successfully integrated the existing Eventstore to track behavior chains.
  • Reliability Enhancements: Implemented features for detecting unintended software behavior and repairing corrupted data.

Results and Outcomes

The project achieved significant results, including:

  • Enhanced Data Integrity: Improved the system’s reliability by effectively detecting and repairing data corruption.
  • Reduced Customer Support Load: Significantly decreased the need for customer support by proactively addressing data integrity issues.

Lessons Learned

Key lessons learned from the project include:

  • Stakeholder Engagement: Regular communication with stakeholders is essential to accurately capture and address user requirements.
  • Reliability Planning: Designing with reliability in mind from the outset ensures long-term system viability.
  • Continuous Improvement: Iterative testing and refinement are crucial for addressing challenges and improving system performance.


Leading the Data-Integrity service project for Qfact was a highly rewarding experience, showcasing my ability to design and implement reliable, user-focused solutions. The project’s success demonstrates my expertise in stakeholder engagement, and the integration of advanced technologies like EventStore. If you are interested in learning more about this project or discussing similar opportunities, please feel free to contact me.

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