Senior Flutter Developer

The Opportunity

Join us as a Senior Flutter Developer and help create stunning cross-platform mobile and web applications for multiple green‑field products - from marketplace platforms to internal SaaS - while co‑building our in‑house AI‑native development system. You'll:

• Code smarter, ship faster with Claude Code, Vibe Coding, Cursor/Windsurf, and whatever ingenious tools you suggest.

• Build & optimize high-performance Flutter applications for iOS, Android, and web with exceptional user experiences.

• Develop our AI‑native platform for developers - your feedback and features go straight into the product roadmap.

• Collaborate remotely with designers, backend developers, PMs, and engineers across Poland and Saudi Arabia on several ventures at once.

• Own the mobile development lifecycle: design system implementation, widget development, state management, performance optimization, and user testing.

• Champion best practices in Flutter architecture, accessibility, testing, and modern cross-platform development workflows.

Why You'll Love Working with Us

• AI at the Core - We're not just using AI; we're building AI tools that make developers 10× more productive - and you'll be a key contributor.

• Remote‑First Freedom - Work anywhere in Europe. Flexible hours and a supportive culture focused on outcomes, not clock‑watching.

• Startup Energy + Venture‑Studio Stability - Tackle new ideas every quarter with the backing of an established venture builder.

• Competitive B2B Compensation - 18 000-26 500 PLN / month (depending on experience) and learning budget.

• Continuous Growth - Access to conferences, AI workshops, and internal hackathons to keep your skills razor‑sharp.

• Friendly, Multicultural Team – Collaborate daily with passionate engineers and product folks who love clean code, good memes, and sharing knowledge.

You Might Be a Good Fit If You…

• Have deep experience building production Flutter applications with modern state management solutions (Bloc, Provider, Riverpod) and widget composition patterns.

• Are fluent with Dart, Flutter SDK, platform channels, and mobile development tools (Android Studio, Xcode, Firebase).

• Have already experimented with Claude Code or other AI pair‑programming tools - and can't imagine coding without them.

• Master responsive design, accessibility standards, performance optimization, and cross-platform compatibility (iOS, Android, Web).

• Communicate confidently in English (Polish is a bonus - many teammates are Polish).

• Thrive in fast‑paced, ambiguous environments where you switch between projects and wear many hats.

• Believe in craftsmanship - automated testing (unit, widget, integration tests), clean architecture patterns, and design system consistency are second nature.

• Have an eye for design and can collaborate effectively with UX/UI designers to bring mockups to life with pixel‑perfect precision across all platforms.

• Experience with native platform integration (iOS/Android) and understanding of platform-specific design guidelines (Material Design, Human Interface Guidelines).

Additional Information

Rimthan Corporate Venture Builder launches and scales digital ventures across the Middle East. We're their dedicated Polish delivery powerhouse, bringing European engineering excellence to a global portfolio of disruptive products. Together, we combine startup agility with enterprise‑grade resources - so your code reaches real users fast.