Cees Jol
Senior Data Engineer
Rotterdam, South Holland, Netherlands
Summary
👤
Senior🎓
Top SchoolCees Jol is a Senior Data Engineer based in Rotterdam with eight years of experience building reliable data and web systems across startups and agencies. He combines hands-on backend engineering (Python, Django, SQL) with full-stack experience (React, Ruby on Rails) and a strong focus on code quality and performance, evidenced by projects that sped up admin systems 90% and automated multi-hour tasks to minutes. He has applied data engineering and computer vision in industrial settings, improving machine performance and integrating analytics for product integrity. Comfortable in fast-paced, cross-functional teams, he also brings a technical foundation from an MSc in Computer Science at TU Delft and complementary minors in entrepreneurship and psychology. Outside core engineering he has a history of independent initiative—from tutoring to fundraising—which surfaces in his pragmatic, impact-oriented approach.
8 years of coding experience
4 years of employment as a software developer
Minor Entrepreneurship, Minor Entrepreneurship at Rotterdam School of Management, Erasmus UniversityMaster of Science - MSc Computer Science, Master of Science - MSc Computer Science at Delft University of TechnologyAtheneum Natuur & Techniek, Atheneum Natuur & Techniek at Trinitas College Heerhugowaard
Dutch, English
Github Skills (22)
keras10
mask10
segmentation10
object-detection10
instance-segmentation9
mask-rcnn9
react9
android-apps9
faster-rcnn8
mattermost8
android8
tensorflow8
ios8
react-native8
lifecycle7
Programming languages (3)
Github contributions (5)
CeesJol/coronachat
Mar 2020 - Sep 2022
Een chat app voor senioren om anoniem met elkaar te praten -->
Contributions:132 commits, 24 PRs, 128 pushes in 2 years 6 months
chat-appmetchat
CeesJol/CeesJol
Dec 2020 - Oct 2023
Contributions:2 PRs, 57 pushes, 7 branches in 2 years 10 months
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