Senior Flutter Engineer (Global/Remote or Berlin)

Another is a sharing app for 1–5 minute selfie videos and swipeable photos, offering an authentic glimpse into your week. Updates are shared with specific groups, individuals, or chats through a mutual-viewing system — see friends' recaps only if you share yours. Content disappears after a week, promoting regular, meaningful interactions with customized privacy controls for secure sharing.

• Take full ownership of our Flutter mobile application, from architecture to release
• Work closely with Moritz (CTO) to implement features quickly and efficiently
• Build, test, and optimize media-heavy user flows (uploading, compressing, storing photos and videos)
• Integrate with Firebase backend and ensure secure, scalable data handling
• Lead performance optimization and help set best practices for mobile app development
• Maintain a high bar for code quality and app responsiveness

• 5+ years of mobile development experience, with 3+ years in Flutter
• Deep experience building and scaling social or media-rich apps
• Hands-on experience with media handling, compression, and video/image optimization
• Proficient with Firebase (Auth, Firestore, Storage, Functions)
• Strong product sense and an ownership mentality—you treat the app like it’s your own
• Comfortable working full-time or beyond (50-60 hours/week) in a remote, fast-moving environment. This is very important to us.

• Work closely with a very nice CTO who values deep collaboration and who appreciates your work
• Play a key role in building the early foundation of a new social product
• Full-time, long-term opportunity with room for growth and autonomy
• 100% remote with flexible location