George Marmaridis
Senior IOS Engineer at Trade Republic
Berlin, Germany
Summary
🤩
Rockstar🎓
Top SchoolGeorge Marmaridis is a Senior iOS Engineer based in Berlin with 11 years of experience designing and shipping mobile products across fintech and consumer apps. He has scaled iOS teams and practices at fast-growing companies like Trade Republic and OLX, serving as tech lead and driving architecture, CI optimization, and hiring. George introduced company-wide automation such as code-generated testing helpers and analytics event generation, which materially reduced meetings and improved cross-platform consistency. Hands-on in both UIKit and SwiftUI, he launched his company’s first SwiftUI-backed feature while evolving a protocol-oriented MVVM approach and maintaining strong test coverage. An active open-source contributor, he improved accessibility, RTL, and testability in a popular UI control library, showing an eye for reusable UI and quality engineering.
11 years of coding experience
9 years of employment as a software developer
Bachelor, Department of Information Technology, Bachelor, Department of Information Technology at Alexander Technological Educational Institute of Thessaloniki
German, Spanish, Greek, English
Stackoverflow
1,882reputation
45kreached
4answers
1question
xcode
top-5%
git
top-5%
ios
top-5%
Github Skills (15)
swift10
ios10
implement10
ui-design9
xcode9
git9
unit-testing8
accessibility7
coredata6
swift-package-manager6
swiftui-list6
alamofire6
swiftui6
icloud6
facebook6
Programming languages (3)
Github contributions (5)
gmarm/BetterSegmentedControl
Apr 2016 - Oct 2020
An easy to use, customizable replacement for UISegmentedControl & UISwitch.
Role in this project:
Mobile Developer (iOS)
Mobile Developer (iOS)Contributions:10 releases, 214 commits, 65 PRs in 4 years 7 months
Contributions summary:George primarily contributed to the UI implementation of the BetterSegmentedControl library. Their commits show the addition of various features such as support for right-to-left languages, custom accessibility identifiers, auto-sizing, setting custom animations, new properties for customization and a new iOS 13+ styling. They also refactored the code for better readability and testability, and added comprehensive snapshot tests to verify UI changes.
segmentedcontrolswift5swift-3iosswitch
gmarm/AlamofireURLRequestConfigurable
May 2016 - Oct 2019
URLRequestConfigurable for Alamofire - Even cleaner type safe routing
Contributions:26 commits, 4 PRs, 16 pushes in 3 years 5 months
type-safealamofiresaferouting
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