Сергій

Flutter Developer
Serhii Dobrovolskyi
Flutter Developer | Ukraine (remote)
Email: [open contact info](look above in the "contact info" section) | Telegram: @sergey_dobrovolskj
LinkedIn: [open contact info](look above in the "contact info" section)

Summary
Flutter Developer with 4+ years of commercial experience (since 2022) and 10+ years in software engineering.
Focused on building stable, user-friendly mobile applications with attention to performance, code quality, and
maintainability. Experienced in working within team environments, following best practices such as Clean
Architecture and BLoC/Cubit state management. Also have backend experience (FastAPI, PostgreSQL, Docker),
which helps to better understand full product workflows and API integrations.

Key Skills
1 Flutter, Dart, BLoC/Cubit, Clean Architecture
2 UI development, animations (AnimationController, Lottie)
3 REST APIs, WebSocket, async data handling
4 FastAPI, Django, PostgreSQL, Redis
5 Docker, CI/CD, Linux

Experience
Flutter Developer | DipDev Studio (2023–Present)
1 Develop and maintain mobile applications using Flutter
2 Implement features using Clean Architecture and BLoC/Cubit
3 Build responsive UI with focus on usability and performance
4 Integrate REST APIs and manage asynchronous data flows
5 Collaborate with team members on feature development and improvements
6 Fix bugs and improve application stability
Software Engineer | BZBGEAR (2016–2023)
1 Developed cross-platform applications for device control and streaming
2 Implemented backend services and REST APIs (Python)
3 Worked with real-time communication features
4 Improved performance and reliability of applications
5 Participated in development of user-focused features for technical products

Selected Projects
AI Product Generator (2025)
Full-stack system (Flutter Web + FastAPI)
1 Built UI for content generation workflows
2 Integrated OpenAI API
3 Implemented Docker-based deployment and CI/CD
Real Estate App (2025)
1 Developed mobile application using Clean Architecture
2 Implemented user interaction features and real-time functionality
3 Focused on responsive UI and performance
Fitness App
1 Worked on application features and improvements
2 Implemented real-time updates via WebSocket
3 Improved user interaction flows
PTZ Camera System
1 Developed API interactions and device control features
2 Worked with streaming and network communication

Additional
1 Published apps to Google Play / App Store
2 Experience with CI/CD pipelines
3 Experience using AI tools in development workflows

Education
System Engineer (1994–1999)

Languages
Ukrainian (native), English (pre-intermediate, improving)