Holger Rapp
Chief Technology Officer at Qwello
Bavaria, Germany
Summary
🤩
Rockstar🎓
Top SchoolHolger Rapp is a seasoned technology leader and CTO with 24 years of experience building resilient hardware-software products and teams, currently leading cross-disciplinary engineering at Qwello to scale EV charging infrastructure. A long-time open-source founder and contributor (Widelands, UltiSnips) and ex-Googler, he helped make Google's Cartographer SLAM project production-ready through build, testing and ROS integration work. He founded Lyft’s first international engineering office in Germany, growing it from a four-person seed team to 35 engineers focused on mapping and localization for autonomous vehicles. Holger blends hands-on backend and DevOps skills with mobile and embedded development, owning everything from on-device software to cloud and apps. Based in Bavaria, he pairs academic depth in time-of-flight camera systems and autonomous vehicle research with practical automation and build-system expertise that often surfaces in infrastructure-focused contributions. An engineer who still commits code, he brings rare cross-domain fluency across robotics, cloud, and consumer hardware.
24 years of coding experience
7 years of employment as a software developer
Diplom Time of flight camera systems, Diplom Time of flight camera systems at Heidelberg University
English, German, French
Github Skills (36)
json10
snippet10
opencv10
docker10
c-language10
visualization10
python10
sni10
scripting10
image-processing10
snips10
bash10
cmake10
dockers10
java10
Programming languages (23)
Github contributions (5)
SirVer/ultisnips
Dec 2015 - Oct 2022
UltiSnips - The ultimate snippet solution for Vim. Send pull requests to SirVer/ultisnips!
Role in this project:
DevOps Engineer & Backend Developer
DevOps Engineer & Backend DeveloperContributions:2 releases, 29 reviews, 100 commits in 6 years 11 months
Contributions summary:Holger primarily focused on improving the build and testing infrastructure for the Vim plugin. They moved the Travis testing into Docker containers to ensure consistency, enabling testing for Python 3. The user also made changes to the build and install scripts, including altering the installation directory. Furthermore, they updated the test scripts and made changes to the snippet file handling, enhancing the robustness of the project's functionality.
vimsnippetpluginsnippetspull-requests
widelands/widelands
Feb 2002 - Dec 2021
Widelands is a free, open source real-time strategy game with singleplayer campaigns and a multiplayer mode. The game was inspired by Settlers II™ (© Bluebyte) but has significantly more variety and depth to it.
Role in this project:Back-end Developer
Back-end DeveloperContributions:13 reviews, 4002 commits, 7 PRs in 20 years 2 months
Contributions summary:Holger's commits focused on refactoring the existing code by converting all README files into Lua and migrating developer and translator credits into JSON files. This involved creating a Python script (`utils/update_authors.py`) to parse the JSON data and generate corresponding Lua files. The changes touched build scripts (`utils/merge_and_push_translations.sh`), and a few core files like developers.lua, showing significant engagement with the project's infrastructure and internationalization efforts.
pythongamec-plus-plusstrategycampaigns
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