Stefan Koolen
IoT Engineer at NovaBytes
Netherlands
Summary
👤
Senior🎓
Top SchoolStefan Koolen is an IoT engineer and software leader from the Netherlands with 11 years of hands-on experience building full-stack and embedded systems. He combines startup grit—as founder of NovaBytes—with team leadership at Nimiq, where he progressed from software engineer to engineering team lead while also taking on an IoT role at Mobycon. His background spans web and product-focused roles (lead developer, full-stack) and a formal Software Engineering education from Rotterdam University of Applied Sciences. Stefan’s profile reflects a pragmatic maker who moves between firmware, cloud services, and user-facing applications, translating complex requirements into deployable solutions. He often bridges design-oriented projects from his media development roots with production engineering, giving him a rare blend of technical depth and product sensitivity. Based in the Netherlands, he brings entrepreneurial initiative and cross-disciplinary experience to IoT and distributed software challenges.
11 years of coding experience
8 years of employment as a software developer
Software Engineer, Software Engineer at Rotterdam University of Applied SciencesOvergang naar Havo 5 Hoger algemeen voortgezet onderwijs (Havo), Overgang naar Havo 5 Hoger algemeen voortgezet onderwijs (Havo) at Stanislas College PijnackerMediadeveloper Mediatechnologie Middelbaar beroepsonderwijs (MBO), Mediadeveloper Mediatechnologie Middelbaar beroepsonderwijs (MBO) at Grafisch Lyceum Rotterdam
Dutch, English
Github Skills (128)
mariadb-database10
peer-to-peer10
windows10
launchy10
faunadb10
database-management10
launcher10
client-library10
linux10
aurora10
productivity-tools10
compiler10
rust10
mysql10
mariadb10
Programming languages (14)
Github contributions (5)
nimiq-tools/nimiq-tools.github.io
Dec 2018 - Nov 2019
Set of Nimiq tools for both online and offline usage.
Contributions:14 commits, 4 PRs, 13 pushes in 11 months
nimiqnimmanualofflinesuite
Eligioo/nimiq-metamask-snap
Apr 2024 - Apr 2025
Contributions:3 reviews, 30 PRs, 46 pushes in 1 year
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.