Johan Dettmar
Senior Machine Learning Engineer at octonomy
Berlin, Germany
Summary
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Senior🎓
Top SchoolJohan Dettmar is a Senior Machine Learning Engineer based in Berlin with 12 years of experience bridging physics, ML research, and production engineering. Trained as a physicist and fluent in web and games development, he has built NLP and recommender systems in fast-moving product teams (Merantix Momentum, JustWatch) and delivered computer vision and document-extraction solutions for clients like ESA and DLR. He moves models from prototype to production, combining constrained convex optimization, text-similarity and sentiment analysis expertise with practical full-stack instincts from earlier agency and freelance work. Now at octonomy, he continues to specialize in NLP while maintaining a rare mix of research rigor and product-focused engineering. An interesting thread through his career is shipping consumer-facing systems (e.g., Novi news chatbot, large-brand web projects) that sharpen his sense for robust, user-centered ML deployments.
12 years of coding experience
15 years of employment as a software developer
Course French, Course French at France LangueTestdaf Diploma German, Testdaf Diploma German at Berlin VolkshochschuleBachelor of Science - BS Physics, Bachelor of Science - BS Physics at Technische Universität BerlinDiploma Digital Media, Diploma Digital Media at Hyper IslandHighschool Science, Highschool Science at Olympiaskolan
English, Swedish, French, German
Stackoverflow
28,778reputation
4.0mreached
22answers
7questions
dom
top-1%
javascript
top-1%
macos
top-1%
youtube-api
top-5%
youtube
top-5%
Github Skills (81)
openstreetmap10
javascript10
offline-maps10
crowd10
ads10
dom10
macos10
nodejs10
convolutional-neural-networks9
youtube9
maps9
youtube-api9
tabular9
osrm9
cpp9
Programming languages (5)
Github contributions (5)
dettmar/dettmar.github.io
Jan 2015 - Feb 2024
Contributions:61 pushes in 9 years 2 months
dettmar/m-wiki
Nov 2016 - Oct 2021
Contributions:3 pushes, 1 branch in 4 years 11 months
wikipediachrome-extensionfirefox-addonchrome
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