Stefano Oldeman
Lead Data Engineer
Utrecht Area Netherlands
Summary
👤
Senior🎓
Top SchoolStefano Oldeman is a Lead Data Engineer with 14 years of experience building and operating large-scale data platforms, streaming systems, and cloud-native data warehouses across companies like bol, KPN, and Spil Games. He blends hands-on engineering—having built near-real-time tracking that processed billions of daily events—with team leadership, coaching engineers and steering product-driven data initiatives. Stefano is pragmatic about design and reliability, influenced by SRE and data systems literature, and has led migrations to BigQuery, data-mesh and dbt-driven analytics at scale. He contributes to open-source (notably improving the Solarium PHP Solr client) and has a polyglot background spanning Java, Scala, Python, Go and cloud tooling. Colleagues describe him as a hacker-at-heart who prioritizes collaboration and measurable value over pure technical novelty. Based in Utrecht, he brings both deep technical craft and a knack for translating product goals into robust, production-ready data solutions.
14 years of coding experience
17 years of employment as a software developer
Bachelor's Degree Information Technology, Bachelor's Degree Information Technology at HU University of Applied Sciences Utrecht (Hogeschool Utrecht)ROC van Amersfoort voor Multimedia
English, Dutch
Stackoverflow
263reputation
28kreached
8answers
0questions
Github Skills (14)
php10
solarium10
solr10
phpunit10
datetimes9
datetime9
iso8
env6
homebrew6
sbt6
macos6
netbeans6
scala6
intellij-idea6
Programming languages (4)
Github contributions (5)
solariumphp/solarium
Jan 2012 - Jan 2012
PHP Solr client library
Role in this project:
Back-end Developer
Back-end DeveloperContributions:9 commits in 2 days
Contributions summary:Stefano focused on improving the Solarium PHP client library. Their contributions primarily involved fixing bugs, such as adding a `__toString` method to the `Request` class and addressing issue #58 by implementing a `formatDate` function within the `Query_Helper` class. Further work included refactoring the `formatDate` tests, separating them into individual tests and adding both failing and successful scenarios, reflecting a focus on improving code quality and testing.
solrclient-libraryphpsolariumphp81
kpn/pyrandall
Sep 2019 - Feb 2021
Pyrandall is a test framework with a focus on Event Streaming and Stream Processors.
Contributions:1 release, 27 commits, 8 PRs in 1 year 5 months
event-streamingstream-processorsprocessorstest-frameworkstreaming
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