Lead App Engineer - Discovery & Consideration (all genders)

ABOUT YOU; Hamburg, Berlin; On-site; EUR 77,000 - 94,000; Full time

Job summary

ABOUT YOU, a fast-growing fashion-tech company in Hamburg, seeks a Lead App Engineer to build and maintain our mobile app for iOS and Android using Flutter. You will influence architectural decisions and coding standards while collaborating with Product, Design, QA, Backend, and Web teams across the stack.

You bring 4+ years of programming with Dart/Flutter, plus CI/CD and testing expertise. Ownership, leadership, and strong communication are essential.

Qualifications

• 4+ years of programming experience, including app development.
• Expert-level knowledge of Dart and Flutter; CI/CD and testing experience.
• Strong ownership, self-drive, and leadership skills; excellent communication.

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

Unit testing

Performance optimization

Leadership

Communication

Education

Bachelor's degree in Computer Science or related

Tools

GitHub Actions

fastlane

Sentry

DataDog

Figma

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.