Lead App Engineer - Discovery & Consideration (all genders)

ABOUT YOU SE & Co. KG; Hamburg, Berlin; On-site; EUR 77,000 - 94,000; Full time

Job summary

ABOUT YOU SE & Co. KG in Hamburg is seeking a Lead App Engineer to own and advance our Flutter-based mobile app for iOS and Android.

You will contribute to architecture, coding standards, and collaborate across product, design, testing, backend, and web teams to deliver high-quality experiences. We value strong ownership, self-drive, and leadership, along with deep Dart/Flutter knowledge, CI/CD proficiency, and performance optimization.

Qualifications

• 4+ years of programming experience, including at least 1 year in app development.
• Expert-level Dart and Flutter knowledge; CI/CD experience (fastlane, GitHub Actions); unit and golden tests; performance optimization.
• Strong ownership, self-drive, leadership, and excellent communication and problem-solving.

Responsibilities

• Build and maintain our high-quality mobile application for iOS and Android using Flutter.
• Contribute to architectural decisions and set coding standards for the team.
• Work closely with Product Managers, Designers, Testers, and other teams (Backend and Web) in a cross-stack environment.
• Introduce new technologies, tools, or processes that improve developer productivity and product quality.
• Debug performance and reliability issues across the stack.

Skills

Dart & Flutter

CI/CD

Performance optimization

Ownership & leadership

Education

Bachelor's degree in Computer Science or similar

Tools

GitHub Actions

fastlane

Job description

Lead App Engineer - Discovery & Consideration (all genders)

• Full-time
• Compensation: from EUR 85,000 - yearly

ABOUT YOU is one of Europe’s fastest growing e-commerce companies. Based in Hamburg and Berlin, we operate at the intersection of fashion and technology. Our mission is to rethink online shopping and make it personal and seamless. This takes more than good ideas. It takes people who take initiative and challenge the status quo. We believe in flat hierarchies, direct communication, and pragmatic decisions. No long approval chains. Just ownership, trust, and clear responsibility. We work hard, but we also believe in enjoying the ride together - over team lunches, afterwork drinks, company events, or a quick coffee in between meetings. If this sounds like you, ABOUT YOU could be the right place to bring in your perspective.

• Build and maintain our high-quality mobile application for iOS and Android using Flutter
• Contribute to architectural decisions and set coding standards for the team
• Work closely with Product Managers, Designers, Testers, and other teams (Backend and Web) in a cross-stack environment
• Introduce new technologies, tools, or processes that improve developer productivity and product quality
• Debug performance and reliability issues across the stack
• You have 4+ years of programming experience, including at least a year of app development. A Bachelor's degree in Computer Science or a similar technical degree is a plus, but we prioritize skill
• You have expert-level knowledge of Dart and Flutter. You're experienced with CI/CD (e.g., fastlane, GitHub Actions) and unit and golden tests. You also have a strong understanding of performance optimization and profiling
• You have strong ownership, self-drive, and leadership skills. You are a team player with excellent communication and problem-solving abilities

Nice to have

• Mobile native experience (iOS and/or Android) or mobile automated testing
• Experience with gRPC, Firebase, and monitoring tools like Sentry or DataDog
• Figma knowledge and open-source experience

Your perks at a glance: Visit our benefits page .

A Place Where You Can Be You

We take it as our responsibility to create an environment where everyone feels welcome, exactly as they are.

Different backgrounds and perspectives make us stronger and shape our culture in ways that matter.

What we stand for internally, we stand for as a brand: acceptance, inclusion, and a fairer approach to fashion.