Сергій

CV Serhii Dobrovolskyi

Serhii Dobrovolskyi | Flutter Developer

Contact Information

Name: Serhii Dobrovolskyi
Telegram: @sergey_dobrovolskj
E-mail: [відкрити контакти](див. вище в блоці «контактна інформація»)
LinkedIn: [відкрити контакти](див. вище в блоці «контактна інформація»)

Tech Stack

Flutter: Bloc / Cubit, Clean Architecture, Dio, Freezed, Provider, GetIt
Backend: Python (FastAPI, Django), REST API, WebSocket
Databases: PostgreSQL, MongoDB, Redis, SQLite
Native Development: Swift (iOS), Kotlin (Android)
DevOps: Docker, Git, Linux, Nginx

Education

Higher Education: System Engineer (1994 - 1999)

Work Experience

Flutter Developer | DipDev Studio

2023 - present
dipdev.studio
Software Engineer | BZBGEAR

2016 - 2023
bzbgear.com

Software Engineer | VBto Converter

2008 - 2016
vbto.net

Software Engineer | Energy Company

2000 - 2016

Key Projects

Real Estate App for Realtors (2025)

Role: Flutter Developer (team 3+ people)
Stack: Flutter, Clean Architecture, Bloc, Dio

• Developed architecture based on Clean Architecture
• Implemented authentication and session management
• Created office booking module
• Integrated real-time chat system
• Optimized performance for large property lists

AI-Powered Product Description Generator Web App (2025)

Role: Full-stack Developer (Solo)
Stack: Flutter Web, FastAPI, PostgreSQL, OpenAI API

• Full development cycle from architecture to production deploy
• Integrated OpenAI API for content generation
• Built REST API with JWT authentication
• Created responsive UI for Flutter Web
• Set up CI/CD and VPS deployment
Cross-platform App for Fitness Trainers

Role: Tech Lead (team of 2)
Stack: Flutter, FastAPI, MongoDB, WebSocket

• Designed client-server architecture
• Developed backend API with WebSocket for real-time updates
• Implemented state management with Bloc
• Created training plans and progress tracking system
• Code review and mentoring junior developer

PTZ Camera Management App for Medical Facilities

Role: Flutter + Backend Developer (team of 4)
Stack: Flutter, Dart Conduit (Aqueduct), PostgreSQL

• Developed server API on Dart Conduit framework
• Implemented PTZ camera control protocols
• Participated in Flutter client-side development
• Set up video streaming and camera controls

iOS Camera Management Apps (Swift)

Role: iOS Developer (Solo)
Stack: Swift, UIKit, MVVM, Network protocols

• Developed native iOS apps for PTZ cameras and Matrix Switchers
• Implemented custom network protocols
• Created intuitive UI for equipment control
• Published to App Store

Cross-platform Desktop App for PTZ Camera Management

Role: Desktop Developer (Solo)
Stack: Python, PyQt5/6, Threading

• Developed cross-platform desktop application
• Architecture based on MVC pattern
• Multi-threaded video stream processing
• Packaging for Windows, macOS, Linux
Additional Skills

Programming Languages: Dart, Python, Swift, Kotlin, C/C++
Tools: Git Flow, Jira, Figma, Postman
Methodologies: Agile, Scrum, Code Review
Languages: Ukrainian (native), English (technical documentation)

About Me

10+ years of experience in software development. Specialized in Flutter and
mobile development with deep understanding of Clean Architecture and state
management. Full-stack development experience allows me to work effectively
on projects of any complexity - from architecture to production. Worked both in
teams and solo on projects of various scales.