Raphael Michel
Geschäftsführer at pretix
Heidelberg, Baden-Württemberg, Germany
Summary
🤩
Rockstar🎓
Top SchoolRaphael Michel is a software entrepreneur and CEO with 16 years of experience building event and ticketing products such as pretix, Venueless, and abiapp. Based in Heidelberg, he combines hands-on backend Python/Django expertise with mobile and frontend experience (Android/Kotlin and JavaScript), shipping secure, production-grade systems used for conferences, festivals and other live events. He’s an active open-source contributor with notable backend work in Django and practical improvements to ticketing workflows, payments and DoS mitigations in pretix. Raphael pairs technical leadership with operator experience running product companies since 2013, bridging product, engineering and ops. Unusually for a tech CEO, he holds an MSc in Physics, which informs a data-driven, methodical approach to engineering and product decisions. Colleagues describe him as the person to talk to about all things ticketing and event technology.
16 years of coding experience
Master of Science - MS, Physics, Master of Science - MS, Physics at Ruprecht-Karls-Universität Heidelberg
German, English, Italian
Stackoverflow
854reputation
290kreached
29answers
3questions
Github Skills (39)
kotlin10
application-framework10
bootstrap10
python10
apidoc10
django10
app-framework10
android-sdk10
orders10
orm10
api10
front-end-development10
android10
web-framework10
bootstra10
Programming languages (22)
Github contributions (5)
pretix/pretix
Sep 2014 - Jan 2023
Ticket shop application for conferences, festivals, concerts, tech events, shows, exhibitions, workshops, barcamps, etc.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:1 release, 828 reviews, 7582 commits in 8 years 6 months
Contributions summary:Raphael contributed to the development of the back-end logic of the pretix ticketing application, primarily using Python and Django. The commits demonstrate work on data validation, including implementing case-insensitive email validation. Further contributions involved addressing potential vulnerabilities by adding limits to subevent creation to prevent denial-of-service attacks, and also included improvements to the API for order processing, as well as payment and refund-related actions.
eventspythonconcertspretixtech-events
pretalx/pretalx
Feb 2017 - Jul 2019
Conference planning tool: CfP, scheduling, speaker management
Role in this project:Full-stack Developer
Full-stack DeveloperContributions:179 commits, 14 PRs, 97 pushes in 2 years 4 months
Contributions summary:Raphael's commits primarily focus on front-end development and include implementing UI components. The user made changes to the front-end template including using Django's bootstrap4 library. The user added a new form to the agenda for the CFP and also included code to allow the user to logout and show their submissions. The user also has contributions to the backend in the settings and URLs files.
eventspythoncall-for-papersschedulingdjango
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