Сергій

Contact SERHII DOBROVOLSKYI
Location: Ukraine · Remote FLUTTER DEVELOPER
Email: [open contact info](look above in the "contact info" section)
Telegram: @sergey_dobrovolskj PROFILE
LinkedIn: [open contact info](look above in the "contact info" section)
dobrovolskyi-62622b27a Flutter Developer with 4+ years of commercial Flutter experience and 10+ years
GitHub: github.com/dsvsergey in software engineering. I build scalable mobile and web apps with Clean
Architecture and BLoC/Cubit, owning features end to end — from requirements
Key Skills and architecture to App Store and Google Play releases. Strong in REST/
WebSocket integrations, Firebase, and performance. I also build FastAPI/
• Flutter — Flutter, Dart, Flutter
PostgreSQL backends and integrate AI features via the OpenAI API.
Web, BLoC/Cubit, Clean
Architecture, Feature-first
architecture WORK EXPERIENCE
• Tooling — GoRouter, Freezed,
Drift, REST APIs, WebSocket, DipDev Studio — Flutter Developer
async data handling 2023 – present
• Firebase — FCM, Crashlytics, • Built and maintained mobile apps with Clean Architecture and BLoC/Cubit,
Analytics owning features from implementation to production
• Backend & AI — FastAPI, • Designed responsive UI focused on usability and performance, and managed
PostgreSQL, Redis, OpenAI API asynchronous data flows over REST APIs
integrations • Shipped AI-powered features and external API integrations
• Delivery — App Store & Google • Worked in an Agile team, contributing to planning, estimation, and code
Play publishing, Git/Git Flow, reviews
Agile/Scrum, CI/CD, Docker,
Linux BZBGEAR — Software Engineer
2016 – 2023
Education
• Developed cross-platform applications for device control and streaming
Specialist Degree in Systems • Implemented backend services and REST APIs in Python, including real-time
Engineering communication features

Central Ukrainian National • Improved the performance and reliability of user-facing technical products
Technical University
1994 – 1999 SELECTED PROJECTS

Languages AI Product Generator — Full-stack (Flutter Web + FastAPI), 2025
• Built AI-driven content-generation workflows with OpenAI API integration
• Ukrainian — native
• Implemented a Flutter Web frontend against a FastAPI backend, with Docker-
• English — working proficiency,
based deployment and CI/CD
actively improving
Real Estate App, 2025
• Developed a mobile app on Clean Architecture with real-time functionality and
responsive, performant UI

Fitness App
• Implemented real-time updates over WebSocket and improved user-interaction
flows

PTZ Camera System
• Built device-control and API-interaction features over streaming/network
communication