Stay Group is an innovative Marketing Company with a mission to help businesses acquire their target customers and create top-tier solutions in the iGaming and entertainment industry. We are looking for an experienced Senior Flutter Developer to take ownership of our mobile application development and help us deliver a seamless user experience across Android and iOS platforms. In this role, you will work on a hybrid mobile application that combines native functionality with WebView integration, collaborating closely with product, web, and marketing teams. If you enjoy building scalable mobile products, solving complex technical challenges, and owning the full application lifecycle — we would love to meet you. - 4+ years of commercial experience with Flutter and Dart development. - Proven experience building and supporting applications for both Android and iOS. - Strong expertise with WebView integration (flutter\_inappwebview or similar), including session management, cookies, deep linking, and navigation control. - Experience working with REST APIs and authentication mechanisms such as JWT, OAuth, and SSO. - Hands-on experience with push notification services (Firebase Cloud Messaging or similar). - Experience integrating analytics and marketing SDKs such as Firebase, AppsFlyer, Adjust, or similar platforms. - Proven track record of publishing and maintaining mobile applications in Google Play and Apple App Store. - Strong understanding of deep linking and universal links implementation. - Knowledge of Android and iOS platform-specific requirements, permissions, and best practices. - Ability to work independently and take full ownership of the mobile product. ### Responsibilities - Develop and maintain a hybrid Flutter application combining native functionality with WebView integration. - Ensure seamless authentication and user experience across native and web layers. - Collaborate with the web team to align navigation flows, redirects, and in-app browser behavior. - Integrate analytics, attribution, and marketing tools to track user acquisition and engagement. - Optimize application performance and WebView loading speed across different devices. - Manage application releases, updates, and store listings for Google Play and Apple App Store. - Monitor application stability and continuously improve performance and user experience. - Maintain code quality, documentation, and technical best practices. - Participate in technical discussions and contribute to product development decisions. - **Freedom to choose where to work:** work from anywhere in the world with the freedom of remote options. - **Flexibility:** enjoy flexible working hours that let you balance your personal and professional life while staying focused on delivering great results. - **Corporate English speaking club:** improve your English proficiency with regular practice and expert guidance. - **A Culture That Cares:** thrive in a friendly environment where a strong corporate culture builds connections, drives innovation, and makes you feel truly valued. - **Comfort Fuels Success:** experience comfortable conditions that inspire productivity and foster professional growth, giving you the tools and space to excel. - **Accelerate Your Growth:** seize career advancement opportunities in a rapidly expanding marketing company. As the company scales, so will your professional journey.