Bob Karreman
Mission Critical Engineer at Schuberg Philis
Delft, South Holland, Netherlands
Summary
🤩
Rockstar🎓
Top SchoolBob Karreman is a Principal Developer and Tech Lead with 14 years of hands-on experience building cloud-native, full‑stack systems from Delft. He combines deep backend skills in Python, microservices, Postgres/PostGIS and MySQL with frontend experience in JavaScript, HTML/CSS and Leaflet mapping, and operational expertise in Docker, Terraform, Ansible and AWS. At Fox-IT he progressed from senior developer to team lead and now principal developer, shepherding secure, production-grade software delivery and cross-functional teams. He contributes to open-source projects like OpenTripPlanner, where he added real-time itinerary UI features and backend GTFS improvements, reflecting an interest in multimodal transport tooling. Known for pragmatic problem solving and a background that spans freelance startups to enterprise security, he brings both hands-on coding and technical leadership to complex distributed systems.
14 years of coding experience
18 years of employment as a software developer
Grafimediatechnologie, Grafimediatechnologie at Rotterdam University of Applied SciencesICT Beheer, ICT Beheer at ID College Zoetermeer
Stackoverflow
1reputation
0reached
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Github Skills (9)
opentripplanner10
leaflet9
java9
front-end-development9
javascript9
javas9
api8
apidoc8
gtfs7
Programming languages (4)
Github contributions (5)
opentripplanner/OpenTripPlanner
Mar 2012 - Jul 2013
An open source multi-modal trip planner
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:10 commits, 2 comments in 1 year 4 months
Contributions summary:Bob contributed to both the front-end and back-end aspects of the OpenTripPlanner project. They modified the front-end user interface by adding real-time information to the itinerary display. Additionally, the user introduced changes to the back-end, including adding and then reverting a feature to include `tripId` in the `Legs` data structure. Furthermore, the user updated the project's configuration to set the Leaflet client as the default front-end for the standalone version and included support for metric units and `transfers.txt` from GTFS feeds.
multimodal
fox-it/dissect-add-on-for-splunk
Oct 2024 - Feb 2025
A splunk plugin that provides sourcetyping for ingestion and processing of dissect records
Contributions:1 release, 2 reviews, 5 PRs in 4 months
splunk
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