MANDATORY: Experience with native iOS/Android development and AWS-based backend architecture

Full-Stack Flutter Developer (iOS/Android) – Firebase & AWS

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What is Lotus Chess?

Lotus Chess is a Berlin-based learning platform focused on helping chess players improve their openings through personalized feedback and AI-powered insights.

Our unique training system uses real-world opening data from millions of games to surface the most instructive mistakes and teach you how to exploit them.

We’ve built a cross-platform mobile app used by chess enthusiasts to study smarter, train faster, and win more games — regardless of rating.

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What is your role?

•Cross-Platform Development: Build and maintain our mobile apps with Flutter for both iOS and Android

•Backend Features: Design and scale features with Firebase (Auth, Firestore, Functions, Analytics)

•Cloud Infrastructure: Work with AWS services such as Cognito, Lambda, and S3 to power scalable backend logic and sync

•Analytics & Insights: Integrate custom telemetry and analytics to understand user behavior and shape product decisions

•Collaboration: Work closely with product, design, and data science to iterate on features and improve performance

•Code Quality: Maintain a high standard of code with CI/CD pipelines, tests, and documentation

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What skills are we looking for?

•Experience with native iOS/Android development and Flutter

•Experience with Firebase backend tools (Firestore, Functions, Crashlytics, etc.)

•Experience with AWS services, especially Cognito, Lambda, S3, and Amplify

•Experience with release processes (App Store, Play Store, TestFlight, etc.)

•Familiarity with Git, GitHub, and mobile CI/CD (e.g., Fastlane, GitHub Actions)

•Comfortable with REST, and mobile deployment processes

•Bonus: interest or experience with data science, ML, or data-driven product design

•Bonus: interest in or experience with chess

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Your education and experience

•B.Sc. or M.Sc. in computer science, mathematics, or similar field

•Past experience shipping mobile apps (portfolio, GitHub, or app store links welcome)

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What can you expect from us?

•A fun, creative product in the chess and edtech space

•New MacBook (Apple Silicon) and modern toolchain

•Dynamic work in an already profitable company owned 100% by the founders

•The opportunity to shape a growing app used by tens of thousands of players worldwide