Ralf Gehrer
CTO & Co-Founder at www.ralfgehrer.com
Berlin, Germany
Summary
🤩
Rockstar🎓
Top SchoolRalf Gehrer is a Berlin-based technology leader and serial founder with 12 years of hands-on experience building mobile products, scaling engineering teams, and launching marketplaces for elite tech freelancers. As CTO and Co-Founder of ElevateX and a longtime freelance lead Android/Flutter developer, he blends strategic product thinking with deep mobile engineering expertise, including contributions to the high-profile Corona-Warn-App. His background spans startups and research—from co-founding ecotastic to work at the Hasso-Plattner-Institute and SAP—and includes international study at Stanford and UC San Diego. Known for turning technical debt into predictable delivery, Ralf helps founders achieve 10x growth through pragmatic AI adoption and rapid team scaling. He pairs a developer’s attention to detail with founder-level instincts for product-market fit and talent curation.
12 years of coding experience
6 years of employment as a software developer
Basic Track Design Thinking, Basic Track Design Thinking at HPI School of Design Thinking!University of California, San DiegoMaster of Science Software Engineering, Master of Science Software Engineering at Hasso Plattner InstituteVisiting Student Mechanical Engineering Design Innovation, Visiting Student Mechanical Engineering Design Innovation at Stanford University
German, English, French
Stackoverflow
719reputation
11kreached
13answers
1question
camera
top-5%
Github Skills (17)
kotlin10
android-development10
java10
javas10
ui-design9
interface-design9
camera9
android-testing8
android-test8
orientation6
android-camera-intent6
android6
android-spinner6
android-image6
listener6
Programming languages (3)
Github contributions (5)
corona-warn-app/cwa-app-android
Sep 2020 - Aug 2021
Native Android app using the Apple/Google exposure notification API. The CWA development ends on May 31, 2023. You still can warn other users until April 30, 2023. More information:
Role in this project:
Mobile Developer (Android)
Mobile Developer (Android)Contributions:4 releases, 1203 reviews, 125 commits in 10 months
Contributions summary:Ralf primarily contributed to the native Android application, focusing on bug fixes, UI improvements, and the implementation of new features. Their work included fixing grammar errors in privacy notices, removing obsolete elements, and introducing code changes related to text and link placement. They also worked on improving test readability and modifying the layout for displaying test results. Additionally, the user's changes involved updating the application's release information and handling keyboard-related issues within the contact diary feature.
apinotification-apiexposure-notification-apiexposure-notificationandroid
ralfgehrer/AndroidCameraUtil
Dec 2013 - Jun 2015
Contributions:21 commits, 2 PRs, 6 pushes in 1 year 6 months
utilpicturesandroid-devicescameraandroid
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