Senior Flutter Mobile Developer - Remote Position

About the Role

We are seeking a Senior Flutter Mobile Developer to join our remote team at Toloka AI. As a key player in our innovative projects, you will help build the next generation of our mobile platform, which is essential for our ecosystem's operation. This role offers the opportunity to work on products that are utilized by thousands of new experts each month, and you will be instrumental in defining how mobile devices can collect, process, and validate real-world data.

What You'll Do

• Define and drive the technical direction of the mobile platform across iOS and Android.
• Design and ship scalable, production-grade mobile applications used by tens of thousands of users weekly.
• Build advanced mobile features involving camera, video, audio, and sensor data.
• Develop solutions for real-world task execution and data collection on mobile devices.
• Support non-standard device usage scenarios and edge cases.
• Own the end-to-end delivery lifecycle: from idea and prototyping to production and iteration releases to App Store and Google Play.
• Ensure reliability of critical user flows at scale.
• Improve performance, stability, and user experience across the mobile stack.

Requirements

• Strong experience with Android development (Java/Kotlin) and Flutter.
• Solid understanding of mobile architecture and design patterns.
• Hands-on experience with Flutter state management, networking, and API integration.
• Experience building and maintaining production-grade apps for Google Play and Apple App Store.
• Deep understanding of mobile performance optimization, multithreading, and async programming.
• Ability to work independently with ambiguous or loosely defined requirements.
• Good written and spoken English (B2 or higher) - must-have for daily communication.

Nice to Have

• Familiarity with hybrid approaches (e.g. WebView integrations).
• Strong ownership mindset and ability to drive solutions end-to-end.
• Understanding of product development workflows and cross-team collaboration.

What We Offer

• Freelance collaboration via the Ontop freelance platform.
• Flexible, fully remote work schedule.
• Opportunity to work on highly innovative projects at the leading edge of AI development.
• Work with a dedicated and dynamic team of experts.
• Engagement with customers that are AI industry leaders and well-known household names.