Arjan Bontsema
Data Platform Engineer
Netherlands
Summary
👤
Senior🎓
Top SchoolArjan Bontsema is a pragmatic data platform engineer with 8–9 years of experience delivering cloud-native analytics and ETL solutions across public and private sectors in the Netherlands. He combines a strong mathematical background (MSc in Business Analytics and Stochastics) with hands-on expertise in Azure, Databricks, MS Fabric, Python, R and SQL to design scalable lakehouse architectures and optimize heavy statistical workloads. As a consultant and freelance founder of ABDC he blends architecture consulting with building production pipelines, orchestration (Azure Service Bus, Functions) and performant PySpark implementations that have cut processing times from days to minutes. He has led platform-level projects for organisations like De Nederlandsche Bank and water boards, and runs knowledge-sharing initiatives including training cohorts and technical mentorship. Colleagues value his critical yet solution-oriented approach and his knack for turning complex data problems into concise, usable products. Available from October 2025, he pairs deep technical craft with an eye for operational impact and reproducible analytics.
8 years of coding experience
9 years of employment as a software developer
MSc, Business Analytics, MSc, Business Analytics at Vrije Universiteit AmsterdamBSc, Mathematics, BSc, Mathematics at Rijksuniversiteit Groningen
Dutch, English
Github Skills (8)
forecasting10
anomaly-detection10
python9
time-series9
machine-learning8
data-science8
asset-management8
pypi2
Programming languages (3)
Github contributions (5)
RoyalHaskoningDHV/sam
Oct 2019 - Aug 2022
Python package for time series analysis and machine learning
Contributions:28 reviews, 381 commits, 33 PRs in 2 years 10 months
forecastingpythontime-series-analysisdata-scienceanomaly-detection
abontsema/shinymaterial
Jan 2019 - Jan 2019
Contributions:3 pushes, 1 branch in 1 day
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