Ігор Veteran

IGOR GREBENYUK

Flutter Engineer

Ukraine | [open contact info](look above in the "contact info" section) | [open contact info](look above in the "contact info" section)
GitHub: github.com/igorgreb | LinkedIn: [open contact info](look above in the "contact info" section)

PROFESSIONAL SUMMARY
Flutter Developer with hands-on production experience building and maintaining feature-rich mobile
applications using Flutter and Dart. Strong in BLoC/Cubit state management, Firebase ecosystem
integration, and architecture-oriented development (Clean Architecture, SOLID). Focused on shipping
stable features, improving UX quality, and resolving platform-specific issues across iOS and Android.

TECHNICAL SKILLS
Flutter, Dart | BLoC, Cubit | Firebase (Auth, Firestore, Functions, Remote Config, Crashlytics,
Analytics, Messaging, go_router
Supabase | REST API | SharedPreferences
Clean Architecture, SOLID, OOP | Git | Android Studio, VS Code, Xcode, Figma, JIRA

EXPERIENCE
Flutter Developer - at Coding House LLC
15.12.2025 - 10.03.2026
Tech Stack:
● Framework: Flutter (Dart)
● State Management: BLoC / Cubit — adherence to Clean Architecture principles.
● Navigation: go_router — implementation of declarative navigation with deep linking and
navigation guards.
● Mobile Services (Firebase):
● Authentication (Email, Google, Apple Sign-In).
● Cloud Firestore (Real-time database).
● Cloud Functions (Server-side logic).
● Cloud Storage (Media hosting and processing).
● Cloud Messaging (Push notifications).
● Crashlytics & Performance monitoring.
● Alternative Backend: Supabase — database and edge functions integration.
● Monetization: RevenueCat (purchases_flutter) — subscription management and in-app
purchases.
● Architecture & Tooling:
● Dependency Injection (get_it, injectable).
● Data modeling (freezed, json_serializable).
● Functional programming patterns (dartz).
● Form management and validation (formz).
● UI/UX: Responsive design (flutter_screenutil), loading states (skeletonizer), and vectorized
assets (flutter_svg).
Key Responsibilities & Achievements:
● Architecture & Development: Spearheaded the development of a scalable mobile application
using Clean Architecture and BLoC, ensuring a clear separation of concerns and high
testability.
● Feature Implementation: Developed core platform features including multi-step content
creation flows, user profile management, and complex authentication cycles.
● State & Data Management: Leveraged Firebase and Supabase for real-time data
synchronization, cloud-based media storage, and serverless backend logic.
 ● Navigation Systems: Implemented a robust routing system using GoRouter, including
advanced Navigation Guards for session-based access control.
● Subscription Models: Integrated RevenueCat to handle cross-platform subscriptions, including
paywall implementation, receipt validation, and transaction lifecycle management.
● Engagement & Retention: Configured Push Notifications (FCM) to drive user engagement
and provide real-time system alerts.
● Stability & Optimization: Monitored and optimized app performance using Crashlytics,
identifying and resolving critical issues based on real-world telemetry data.
● Localization: Implemented full App Internationalization (i18n), ensuring the application is
prepared for global deployment across multiple languages.

Junior Flutter Developer - ToPizdato
07.2024 - 09.2024
- Developed an iOS marketplace application for used toys.
- Worked with Flutter, Riverpod, and Firebase.
- Participated in feature development and bug fixing.

Trainee Mobile Developer - AppVesto LLC
2021 - 2022
- Gained practical experience in Flutter application development.

PROJECTS
Empty Fridge (Pet Project)
Flutter application that suggests recipes based on available ingredients and displays nutritional
values.
Tech: Flutter, Dart, Dio, Retrofit, Firebase, Hive

EDUCATION
National Academy of Statistics, Accounting and Audit - Accounting and Auditing
Hillel IT School - Java Programming
Web Academy - Flutter
Udemy - Flutter and Dart Courses
LANGUAGES
Ukrainian - Native | English - Intermediate (B1)