MacOS Desktop Engineer

Stuttgart

Join the team behind one of the world’s leading open-source file sync and collaboration platforms.

At Nextcloud, we empower users to take control of their data — securely, privately, and transparently. With a distributed team of 140 across 24 countries, we work remotely and foster a collaborative, trust-based culture built around our commitment to open source and digital sovereignty.

We’re looking for a passionate and skilled macOS Desktop Engineer to help
shape the future of our Desktop Client — a core product relied on by millions of users worldwide. As part of our Desktop team, you’ll play a key role in building privacy-respecting, reliable, and high-performance sync software on macOS.

Tasks

Improve and maintain the Qt/C++ cross-platform desktop sync client.
Develop macOS-specific extensions using Swift and Objective-C++ (File Provider, AppKit).
Troubleshoot and resolve complex sync issues across diverse systems.
Participate in code reviews, community forums, and open-source development
processes.
Collaborate with fellow developers, designers, and community members across time zones.
Contribute to the evolution of a secure and user-respecting alternative to
proprietary cloud services.

Requirements

Proven experience with Swift, C++, and Objective-C++ (non-ARC).
Solid grasp of Qt, AppKit, FileProvider, and Finder Sync.
Familiarity with Xcode, CMake, Git, GitHub (PHP is a plus).
Strong understanding of multithreading and concurrency (GCD, Swift Concurrency).
Knowledge of macOS internals including launchd, fileproviderd, code signing,
and app distribution.
Comfort working independently in a remote, open-source team.
Proficiency in English is required; additional languages are a plus.

Nice to have

Experience with Realm or other embedded databases.
Background in cloud storage, file sync, or secure application development.
Contributions to open-source projects or active participation in relevant
communities.

Benefits

Ein internationales Team mit viel Herzblut für die Philosophie von Open-Source
Ein innovatives Produkt, das Millionen von Nutzern weltweit begeistert
Attraktive Vergütung und flexible Arbeitszeiten
Zeit für persönliche Entwicklung und ein jährliches Budget für Weiterbildung
Entwicklungsmöglichkeiten und Perspektive für die Zukunft

We are looking for somebody with ambition and drive who would like to grow and learn. That means that if you don’t fulfill the requirements yet but want to learn, apply!