Senior Flutter Developer (Cupid Media) in London

This is an exciting opportunity for a skilled mobile engineer to contribute to a globally scaled social discovery platform used by millions of users across multiple international markets. You will play a key role in building and enhancing high-performance Flutter applications that enable meaningful digital connections between users worldwide. Working within a cross-functional and fully remote environment, you will collaborate closely with product, backend, QA, and architecture teams to deliver scalable, secure, and user‑centric features. The role combines hands‑on development with architectural thinking, code quality ownership, and active participation in release cycles. You will be involved in shaping technical decisions, improving application performance, and ensuring smooth delivery of new features in a fast‑paced product environment.

Accountabilities

• Drive end‑to‑end delivery of business features from technical design and estimation through development, testing, and production release.
• Design and implement scalable Flutter‑based mobile applications with a strong focus on performance, usability, and maintainability.
• Review technical specifications, define solution approaches, and present architectural decisions to senior stakeholders and architects.
• Develop clean, modular, and well‑tested code while maintaining high standards through peer code reviews and best practices.
• Collaborate closely with product managers, QA engineers, backend developers, and architects throughout the development lifecycle.
• Support QA and release processes by identifying, debugging, and resolving production and pre‑production issues.
• Ensure application stability, performance optimization, and security across Android and iOS platforms.
• Participate in CI/CD workflows, app store release cycles, and monitoring of live application performance.
• Contribute to maintaining technical documentation and managing technical debt within the codebase.
• Actively participate in Agile ceremonies and cross‑functional team discussions to continuously improve product delivery.

Requirements

• 3+ years of hands‑on commercial experience with Flutter and Dart development.
• Strong understanding of Flutter architecture, widgets, navigation, and state management solutions (e.g., Provider, Bloc, Riverpod).
• Experience building responsive UI components, animations, and high‑performance mobile interfaces.
• Solid knowledge of mobile application lifecycle, performance optimization, and debugging tools such as Flutter DevTools, Android Studio, and Xcode.
• Experience writing unit and widget tests, ensuring code reliability and maintainability.
• Familiarity with mobile CI/CD pipelines and release processes using tools such as GitHub Actions, Bitrise, or Codemagic.
• Experience integrating RESTful APIs, JSON‑based services, and authentication mechanisms such as OAuth2 or token‑based systems.
• Strong understanding of clean code principles, SOLID design principles, and modular architecture patterns.
• Proficient in Git workflows, Agile methodologies, and collaborative development practices.
• Ability to communicate effectively in English (B2+) and fluently in Russian, including documentation and cross‑team collaboration.
• Experience with crash reporting tools such as Firebase Crashlytics or Sentry is a plus.
• Exposure to app store deployment processes and native Android/iOS integrations is an advantage.

Benefits

• Fully remote full‑time opportunity with global team collaboration.
• 28 calendar days of annual vacation plus 7 additional wellness days.
• Health benefits, including reimbursement for insurance or medical expenses up to $1,000 annually if not covered by corporate insurance.
• Support for professional growth, including 50% reimbursement for training courses, conferences, and industry events.
• Corporate discounts for English language learning programs.
• Home office or co‑working space support, including equipment provision or reimbursement up to $1,000 every three years.
• Performance‑based bonuses for successful employee referrals (up to $5,000).
• Access to an internal recognition and rewards system redeemable for perks and experiences.
• Fully equipped remote‑first work environment with strong organizational support.