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# Data Engineer

- **Company:** Lionsville
- **Location:** Den Haag, Netherlands
- **Salary:** €4,600.0
- **Contract:** Permanent contract
- **Skills:** Artificial Intelligence, Information Engineering, Extract Transform Load (ETL), NoSQL, SQL Databases, Data Streaming, Management of Software Versions, Data Management
- **Published:** September 10, 2026
- **Apply:** https://www.indeed.com/viewjob?jk=ab28231d0c785bde

## About the Role

* Ownership, a bias to solutions, and clear communication. You work across organisational boundaries - the source systems are usually somebody else's - so you ask precise questions and you are easy to say yes to
 * Strong architecture capability for data platforms - ingestion, storage and scheduling designed to be understood and changed by someone else, with the trade-offs written down rather than implied
 * Deep data engineering - ETL and ELT, orchestration and scheduling, with SQL you are genuinely fluent in and real experience of streaming as well as batch. With it the judgement that only comes from having been burned: idempotency and replay, schema drift, and what a backfill actually costs. The tooling matters less than the depth
 * Experience working agentically with AI - not curiosity about it, but a way of working you already have, and opinions about where it breaks down
 * Complex data-model design, across SQL and NoSQL, with data contracts and schema versioning - and the discipline to treat a contract as a promise
 * A real feel for data quality - staleness, completeness, silent drift. The curiosity to ask why a fifth of the records are missing a field everyone assumed was always populated, instead of filtering them out, and the honesty to say "we cannot conclude that from this data yet"
 * Living in the Randstad and comfortable with occasional travel to customer sites. The work runs on English; Dutch is welcome, not required



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