Stefan Ceriu
Apple Platforms Tech Lead
Iași, Romania
Summary
🤩
Rockstar🎓
Top SchoolStefan Ceriu is an Apple Platforms Tech Lead and polyglot mobile engineer with 14–17 years of experience building production-grade iOS apps and Rust-backed cross-platform systems. At Element he architects and leads development of Element X, bridging SwiftUI and the Matrix Rust SDK via UniFFI while setting CI/CD, code review, and release processes for a global open-source team. His background spans Objective-C, Swift, C#, and low-level Rust FFI work—skills honed building apps for FLIR, EF Education First, and enterprise medical-training platforms used by major pharma clients. A frequent open-source contributor, he’s directly improved matrix-rust-sdk bindings and shipped UI and audio features across element-ios and element-x-ios, demonstrating both protocol-level thinking and practical UI craftsmanship. Based in Iași, Romania, he combines systems-level engineering with hands-on product delivery and a preference for keeping most work visible on GitHub.
13 years of coding experience
13 years of employment as a software developer
Master of Science (MSc), Computer Software Engineering, -, Master of Science (MSc), Computer Software Engineering, - at Universitatea „Alexandru Ioan Cuza” din Iași
English, French, Romanian
Stackoverflow
518reputation
19kreached
15answers
0questions
Github Skills (35)
objective-c10
ios10
mobile-development10
swiftui-app10
user-interface10
ui-design10
cffi10
foreign10
ffi10
swift10
rust10
swiftui10
debug9
debugging9
navigation-drawer9
Programming languages (12)
Github contributions (5)
element-hq/element-x-ios
Feb 2022 - Jan 2023
Next generation Matrix client for iOS built with SwiftUI on top of matrix-rust-sdk.
Role in this project:
Front-end Developer
Front-end DeveloperContributions:130 releases, 1538 reviews, 286 commits in 11 months
Contributions summary:Stefan primarily contributed to the UI of the iOS Matrix client, Element-X. Their work included implementing new features such as a logout option, room lists on the home screen, and the ability to view image files. They added new timeline UI features such as displaying stickers, handling different timeline item types such as messages and displaying reactions. Additionally, they worked on improving the UI, user experience, and fixing bugs related to the timeline and other views.
matrix
stefanceriu/SCSiriWaveformView
Apr 2014 - Feb 2021
UIView subclass that reproduces the waveform effect seen in Siri on iOS 7.
Role in this project:Mobile Developer (iOS)
Mobile Developer (iOS)Contributions:1 review, 20 commits, 6 PRs in 6 years 11 months
Contributions summary:Stefan primarily worked on enhancing the iOS application `SCSiriWaveformView`. Their contributions included implementing a playback example, fixing device compatibility issues, and improving power level calculations. Further development focused on refining the core functionality of the waveform view, as well as improving the calculation.
siriuiviewswiftioswaveform
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.