Senior Software Engineer 2026-APG-424

Location: Heerlen or Amsterdam Netherlands (Onsite: 2 days per week after onboarding)
Hours per week: 40
Contract Type: Freelance / Interim Assignment (Not suitable for ZZP freelancers)
Start Date: ASAP
Duration: Initial contract with extension option
Maximum Hourly Rate: 42
Education Level: Bachelors degree in Computer Science Software Engineering Data Engineering or related field
Experience Required: Minimum 5 years
Travel Requirement: 25% 50%
Language: English (Dutch is a plus depending on team setup)

We are seeking a Senior Software Engineer Data Quality Framework to design build and maintain a scalable data quality framework within Databricks using PySpark.

You will play a key role in developing reusable framework components that support data validation rule execution and contract-driven data quality checks across enterprise data environments. The role combines strong software engineering practices with data platform engineering in a modern cloud-based ecosystem (Azure Databricks).

You will work in a multidisciplinary Agile team responsible for delivering reliable and scalable data capabilities that support critical business and data products.

• Design develop and maintain a PySpark-based data quality framework in Databricks
• Build reusable components for rule execution validation logic and result handling
• Implement contract-driven data validation mechanisms across datasets
• Develop scalable and maintainable framework architecture

• Ensure high engineering standards through:
  • Code refactoring and modular design
  • Unit and integration testing
  • CI/CD pipeline implementation and maintenance
  • Packaging and versioning of framework components
• Support multi-environment deployment strategies (dev/test/prod)

• Develop and manage Databricks jobs workflows alerts and notifications
• Support operational stability of data pipelines and framework execution
• Contribute to monitoring and reliability improvements

• Work closely with data engineers analysts and platform teams
• Translate data quality requirements into scalable technical solutions
• Contribute to documentation standards and best practices
• Support coaching and knowledge sharing within the team

• A scalable and reusable data quality framework in Databricks
• Robust PySpark-based validation and rule execution components
• Stable CI/CD and deployment processes for framework components
• Improved reliability and governance of data quality processes
• Documented standards guidelines and reusable engineering patterns
• Operational monitoring setup (alerts triggers notifications)

• Minimum 5 years of experience in software engineering data engineering or platform engineering
• Strong proficiency in Python and PySpark
• Experience working with Apache Spark in production environments
• Hands-on experience with Databricks (Azure preferred)
• Strong understanding of:
  • Software design principles (OOP modular design maintainability)
  • CI/CD pipelines and testing strategies
  • Multi-environment cloud deployments
• Experience with version control packaging and release processes
• Strong communication skills in English
• Ability to work independently and take ownership of tasks

• Experience building or maintaining data quality frameworks or rule engines
• Knowledge of metadata-driven validation approaches
• Experience with data contracts and governance concepts
• Familiarity with Databricks alerts workflows and operational tooling
• Experience with Azure DevOps and Artifactory
• Experience developing reusable platform components or shared libraries
• Exposure to enterprise-scale cloud data platforms

• Strong software engineering mindset
• High attention to code quality and maintainability
• Analytical and structured problem-solving ability
• Ownership and proactive delivery attitude
• Ability to work across technical and business stakeholders
• Strong collaboration in agile teams
• Platform thinking and scalability focus