Data Engineer

At Alfen, we are at the forefront of the energy transition. We build smart energy solutions that enable a sustainable future-ranging from EV charging infrastructure to energy storage systems and grid solutions. To support our growing data landscape, we are looking for a Data Engineer to join our Enterprise Platform Team . Your Role As a Data Engineer, you will play a key role in designing, building, and maintaining robust data structures and pipelines across both our operational systems and analytical data platform. You ensure that our data is reliable, secure, high-performing, and accessible-empowering teams across Alfen with actionable insights. You will work with a diverse range of data sources, including ERP, HR, service desk systems, and IoT data from our advanced battery solutions. What You'll Do Data Engineering & Platform Development

• Design, build and maintain databases and data pipelines across operational systems and the analytical platform

• Develop and optimise Microsoft SQL Server environments (T-SQL, stored procedures, ETL/ELT pipelines)

• Model data using dimensional modelling and data warehouse best practices

• Build and integrate data solutions using Python and modern data engineering tools Performance, Security & Quality

• Ensure high performance, scalability, and security of databases

• Implement indexing, backup, and recovery strategies

• Safeguard data quality through validation, monitoring, and lineage tracking

• Monitor system performance and resolve incidents proactively Delivery & Collaboration

• Support releases, migrations, and ongoing improvements of the data platform

• Collaborate in IT projects and contribute to the data roadmap

• Work with tools such as Microsoft SQL Server, Matillion, Snowflake, Azure Analysis Services, and Power BI

• Participate in on-call duties when required Innovation & Standards

• Evaluate and implement new technologies and data engineering best practices

• Document data models, pipelines, and flows for transparency and scalability

• Maintain standards for naming conventions, version control, and deployment What You Bring

• Bachelor's or Master's degree (or equivalent) in IT, Data, Computer Science, or similar

• 5+ years of experience in IT/technology roles, including 3+ years in data-focused positions

• Strong expertise in SQL Server (T-SQL, stored procedures)

• Experience with programming languages such as Python, R, C#, Java or similar

• Hands-on experience with data warehousing, dimensional modelling, and ETL/ELT processes

• Experience with Snowflake and Matillion is a strong plus

• Knowledge of database performance, security, and optimisation

• Understanding of operational vs analytical data environments

• Strong communication skills in English and Dutch Who You Are

• Analytical and detail-oriented

• Proactive with a strong sense of ownership

• Customer-focused with strong stakeholder awareness

• Organized and able to manage multiple priorities

• A clear communicator who enjoys collaboration

Why Alfen?

• Work on impactful solutions that accelerate the energy transition
• Be part of an innovative, fast-growing technology company
• Collaborate with passionate professionals in a dynamic environment
• Opportunities for growth, learning, and innovation What do we offer you?

• Competitive salary and excellent benefits (Metalektro CLA).
• 27 vacation days + 13 additional days, with the option to sell 10.
• Hybrid working (up to 2 days/week).
• Company laptop.
• Access to online learning.
• AlFun and Young Alfen activities.
• Sports activities and fitness options.
• PME pension plan with strong employer contribution.
• Travel allowance of €0.23 per km (max 50 km one-way). Ready to power the future with data? Read more Interested? Freek Appels Contact Working at