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. Shipped three commercial cross-platform Flutter apps
(iOS, macOS, Windows, Android) published on the App Store, Google Play and
Key Skills Microsoft Store, consolidating what were previously separate native Swift/Kotlin
codebases into one Flutter codebase.
• Flutter — Flutter, Dart, Flutter
Experienced in full-cycle product development, from requirements analysis and
Web, BLoC/Cubit, Clean
architecture design to multi-store releases, with a strong background in REST
Architecture, Feature-first
API integrations, Firebase services, and performance optimization. Also build
architecture
backend services with FastAPI, PostgreSQL, and Docker, integrating AI-powered
• Cross-platform — iOS, macOS,
features via the OpenAI API.
Windows, Android
• Tooling — GoRouter, Freezed,
Drift, REST APIs, WebSocket, WORK EXPERIENCE
async data handling
• Firebase — FCM, Crashlytics, DipDev Studio, contracted to BZBGEAR — Flutter Developer
Analytics 2023 – present
• Backend & AI — FastAPI, • Built and shipped three commercial Flutter apps for BZBGEAR — PTZ
PostgreSQL, Redis, OpenAI API Camera Control, Switch Control, and BG-NUTRIX — published on the App
integrations Store, Google Play and Microsoft Store (see Selected Projects)
• Delivery — App Store, Google • Consolidated previously separate native Swift (iOS/macOS) and Kotlin
Play & Microsoft Store (Android) codebases into a single cross-platform Flutter codebase
publishing, Git/Git Flow, Agile/ • Implement features using Clean Architecture, BLoC/Cubit, REST API
Scrum, CI/CD, Docker, Linux integrations and AI-powered workflows
• Took ownership of features from implementation to production, participating in
Additional planning, estimation and code reviews

• CI/CD pipelines BZBGEAR — Software Engineer
• Agile/Scrum teams
2016 – 2023
• AI-assisted development tools
• Developed desktop PTZ camera-control applications (Python, PySide6,
OpenCV) — the predecessor systems later consolidated into the Flutter apps
Education
above
System Engineer • Implemented backend services and REST APIs (Python)

1994 – 1999 • Improved performance and reliability of applications

Languages SELECTED PROJECTS
• Ukrainian — native
BZBGEAR PTZ Camera Control
• English — working proficiency,
Flutter · iOS, macOS, Windows, Android — App Store, Google Play, Microsoft
actively improving
Store
• Consolidated separate native Swift (iOS/macOS) and Kotlin (Android)
codebases into a single cross-platform Flutter app
• VISCA-over-IP camera control: pan/tilt/zoom/focus joystick, presets,
brightness/contrast tuning

• Smart Zone and Presenter auto-tracking; simultaneous management of
multiple connected cameras

BZBGEAR Switch Control
Flutter · iOS, Windows, Android — App Store, Google Play, Microsoft Store
• Controls 30+ BZBGEAR AV devices: matrix switchers, video wall processors,
HDBaseT and AVoIP transceivers
• Drag-and-drop source switching and video wall configuration with bezel
correction
• Role-based access and multi-user administration

BG-NUTRIX — Medical PTZ Monitoring
Flutter
• Monitoring application for BZBGEAR's IEC 60601-certified medical PTZ
camera system: live video/audio via NDI, presets, auto-tracking
• Role-based access (User/Admin/Manager) and patient-data privacy controls,
including image-blur privacy mode

AI Product Description Generator (BZBGEAR / BZBToolbox)
Flutter Web + FastAPI + OpenAI API
• Built the Flutter Web front end for BZBToolbox's AI content service, generating
SEO-ready marketplace listing content
• Integrated OpenAI API content-generation workflows into a FastAPI +
PostgreSQL backend

Fitness App
• Flutter mobile app with a FastAPI backend for a fitness training company; real-
time updates via WebSocket