Stefan De Konink
Director at Kinkrsoftware B.V.
Panningen, Limburg, Netherlands
Summary
👤
Senior🎓
Top SchoolStefan De Konink is a director and seasoned software leader with 17 years of experience building open-source transportation and geospatial systems from the Netherlands. He founded and leads Bliksem Labs to deliver BSD-licensed journey planners and works closely with transit agencies to enable cross-border travel info using open standards. Hands-on across backend development, embedded systems and AI, he has contributed to notable projects like OpenTripPlanner (improving elevation handling and implementing Dutch fare logic) and runs a consultancy focused on open implementations for broadcasting, ETL and reservation systems. A persistent open-data advocate, he has driven community shifts toward publicly available transit and aerial data through multiple nonprofit boards, and holds an MSc in Artificial Intelligence. An unexpected thread through his career is his beekeeper training, reflecting a practical, systems-minded curiosity beyond software.
17 years of coding experience
3 years of employment as a software developer
HAVO, Natuur en Techniek & Natuur en Gezondheid, HAVO, Natuur en Techniek & Natuur en Gezondheid at College Het LooB.ICT, Advanced Computer Science, B.ICT, Advanced Computer Science at Rotterdam University of Applied SciencesMaster of Science (MSc), Artificial Intelligence, Master of Science (MSc), Artificial Intelligence at Universiteit van AmsterdamBeekeeper, Beekeeping, Beekeeper, Beekeeping at Imkersvereniging Den Haag en omstreken
Dutch, German, English, French
Stackoverflow
13reputation
150reached
4answers
2questions
Github Skills (14)
openstreetmap10
javas10
java10
algorithms9
implement9
error-handling9
algorithm9
qml6
keycloak6
javascript6
qt6
django6
lxml6
openid-connect6
Programming languages (37)
Github contributions (5)
opentripplanner/OpenTripPlanner
Apr 2012 - Nov 2018
An open source multi-modal trip planner
Role in this project:
Back-end Developer
Back-end DeveloperContributions:15 commits, 1 PR, 50 comments in 6 years 8 months
Contributions summary:Stefan primarily focused on improving the OpenTripPlanner's handling of elevation data from OpenStreetMap and implementing features related to Dutch fare calculations. They implemented try/catch blocks to handle elevation parsing errors and switched between using `Double.NaN` and `null` to represent invalid elevation values. Additionally, the user integrated DutchFareService, introducing a proprietary fare system that uses fare_attributes.txt and fare_rules.txt data and hardcoded the currency to Euro. Furthermore, they adjusted several elements of the Dutch fare implementation and logging levels.
multi-sourcemulti-modaltrip-plannermodalplanner
skinkie/NeTEx
Oct 2017 - Apr 2022
Contributions:26 pushes, 13 branches in 4 years 7 months
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