Marcel Voss
Senior IOS Engineer - Design System at SumUp
Berlin, Germany
Summary
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Rockstar🎓
Top SchoolMarcel Voss is a senior iOS engineer based in Berlin with 11 years of experience designing modular, testable architectures and shipping polished mobile products across startups and enterprise teams. He currently leads Design System efforts at SumUp after guiding mobile chapters and platform work at Mercedes‑Benz.io and SumUp’s POS squad, bringing both hands‑on implementation and cross‑team leadership. Marcel has a history of driving engineering quality—introducing linters, unit test requirements, and release automation—and has shipped impactful features from large redesigns to high‑performance graphics layers. An active contributor to the Provenance emulator on iOS, he pairs pragmatic UX enhancements with low‑level fixes (e.g., permission and iPad issues) that improve real user workflows. Colleagues rely on him for thoughtful architecture discussions and a continuous‑learning mindset; outside work he admits to being easily distracted by dogs.
11 years of coding experience
7 years of employment as a software developer
Gymnasium Heide-Ost
German, English
Stackoverflow
380reputation
8kreached
15answers
1question
Github Skills (13)
objective-c10
uikit10
ios10
emulation10
ui-design9
swift9
tvos9
catalyst7
watchkit6
nsuserdefaults6
appstore6
iphone6
appstoreconnect6
Programming languages (5)
Github contributions (5)
Provenance-Emu/Provenance
Sep 2016 - Jan 2021
iOS & tvOS multi-emulator frontend, supporting various Atari, Bandai, NEC, Nintendo, Sega, SNK and Sony console systems… Get Started: https://wiki.provenance-emu.com |
Role in this project:
Mobile Developer (iOS)
Mobile Developer (iOS)Contributions:3 reviews, 29 commits, 20 PRs in 4 years 4 months
Contributions summary:Marcel primarily focused on improving the Provenance emulator's iOS interface and functionality. Their contributions include fixing crashes related to missing permissions, adding FPS count functionality to the emulator's UI and settings, and implementing an acknowledgements view controller. They also made adjustments to the game library, implemented a screenshot feature, and addressed iPad-specific issues within the app. These changes collectively enhance the user experience and improve the emulator's features on iOS.
gameboyemulatorgameemulator-frontendprovenance
marcelvoss/Mac-Setup
Jan 2018 - Apr 2019
Contributions:17 commits, 13 pushes in 1 year 3 months
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