Arnaud Ringenbach - IOS Android Software Engineer at Niji

Arnaud Ringenbach

IOS Android Software Engineer at Niji

Brittany, France

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Summary

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Rockstar

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Top School

Arnaud Ringenbach is an iOS and Android software engineer based in Brittany, France, with eight years of experience building mobile applications in both native and cross-platform stacks. Currently at Niji, he combines solid academic training in computer science with hands-on delivery across production apps and SDKs. He is an active open-source contributor to the Matrix ecosystem, having implemented features and critical bug fixes in well-known projects like Element and the matrix-ios-sdk. Pragmatic and detail-oriented, he has improved search UX, media handling, permalink behavior and sync logic—work that spans app UI and core SDK concerns. Comfortable working in teams and associations, he brings both collaborative project experience and a taste for refactoring and test-focused improvements. Those combined skills make him a reliable engineer for mobile projects that require both product-facing polish and robust underlying integrations.

8 years of coding experience

1 year of employment as a software developer

Licence, Informatique, Licence, Informatique at Université de Strasbourg

Diplôme d'Études Universitaires de Technologie, Classes préparatoires, Diplôme d'Études Universitaires de Technologie, Classes préparatoires at Université de Technologie de Belfort-Montbéliard

Formation Expert Développement Mobile, Formation Expert Développement Mobile at Diginamic / DTA Ingénierie

English, German, French

Stackoverflow

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Github Skills (13)

kotlin10

javas10

objective-c10

swift10

ios10

user-interface10

mobile-development10

matrix10

sdk10

android-development10

java10

ui-design9

unit-testing8

Programming languages (5)

TypeScriptRustObjective-CSwiftKotlin

Github contributions (5)

element-hq/element-ios

Feb 2022 - Jan 2023

A glossy Matrix collaboration client for iOS

Role in this project:

iOS Mobile Developer

Contributions:154 reviews, 219 commits, 123 PRs in 11 months

Contributions summary:Arnaud primarily contributed to the Element iOS application by implementing features and fixing bugs. The user worked on adding search highlighting for search results, proper handling of image types for sharing, and fixing a phone number validation issue. Furthermore, the user contributed to features such as updating the create room avatar placeholder with a remove button, and updating the back button text on the room info screen.

matrix-collaborationmatrixcollaborationios

matrix-org/matrix-ios-sdk

Feb 2022 - Oct 2022

The Matrix SDK for iOS

Role in this project:

Mobile Developer (iOS)

Contributions:40 reviews, 36 commits, 23 PRs in 7 months

Contributions summary:Arnaud primarily contributed to the iOS SDK for Matrix, focusing on bug fixes and feature enhancements. They addressed issues related to phone number validation within a custom URL, added functionality for strict matches in room filter predicates, and fixed a problem with the `membersCount` not being set in the room state. Additionally, the user made updates to the session, including adding a preferred sync presence property and other improvements to the sync process.

the-matrixsdkmatrix-sdksdk-for-iosmatrix

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