Vasyl

SKILLS

Language
English: Intermediate (actively improving)
Ukrainian: Native
Dart/Flutter (3+ years — Mobile & Web Apps)
Publishing: App Store, Google Play
(Transformation)
Architectures: DDD, Clean Architecture, MVP,
MVC, MVVM
State Management: Bloc, Cubit, Riverpod,
Provider, ChangeNotifiers

VASYL HANTSIUK Navigation: Navigator 2.0, go_router
UI/UX: Flutter Animations, CustomPainter,
D A R T / F L U T T E R Easy Localization
D E V E L O P E R Integrations: Firebase, RevenueCat, Google
Maps, Payment Systems (Apple Pay, Google
Pay), Facebook Auth
SUMMARY Databases & Storage: SQLite, Drift, Secure
Experienced Flutter developer with over 3 Storage, Shared Preferences
years in building and publishing production- Network & APIs: WebSockets, RESTful APIs,
grade mobile and web applications (App Chopper, Dio, HTTP
Store & Google Play). Proficient in Dart, state Tools: Freezed, JsonSerializable, GetIt,
management (Bloc, Riverpod, Provider), and Geolocator, Local Auth (biometrics), Local
modern architectural patterns (Clean Notifications
Architecture, DDD, MVVM, etc.). Python (7 months) & Backend Development
(actively learning FastAPI)
Currently deepening Flutter expertise
Web scraping: BeautifulSoup (bs4), requests,
through a certified course focused on selenium
refactoring, long-term maintainability, and
Data Analysis: pandas, numpy, matplotlib
scalable architecture. Strong attention to
code quality, modularity, and performance Automation: Telegram Bot APIs, Selenium
optimization. Tools & Infrastructure
Firebase: Authentication, Realtime Database,
Skilled in integrating Firebase (auth, storage, Firestore, Storage, Crashlytics, Messaging, A/B
messaging, analytics, A/B testing), Testing, Analytics)
RevenueCat, Google Maps, and various third- Google Cloud Platform: Cloud Functions,
party services. Delivered complex features Buckets, Pub/Sub
including custom UI/UX, video streaming, Third-party: RevenueCat (Subscriptions, A/B
device automation, and subscription flows. tests), AppsFlyer, KeyCRM
Admin Tools: Jet Admin, Retool
Additionally exploring backend
Environment: Git (GitHub, GitLab, Bitbucket
development with Python (FastAPI) as a
complementary skill and area of technical DevOps: Linux (Ubuntu, Manjaro – basic
interest. Confident working in cross- knowledge)
functional teams, with experience in Git- Project Management: Jira, Trello, Confluence,
based workflows and agile environments. Teamwork, Slack
Typing: Blind typing (English/Ukrainian)
CONTACTS
Soft Skills
Address: Lviv, Ukraine Problem-solving mindset with focus on long-
Telegram: @VasylHant term maintainability
Email: [open contact info](look above in the "contact info" section) Experience working in Scrum teams and Git-
Phone: [open contact info](look above in the "contact info" section) based workflows
[open contact info](look above in the "contact info" section) Continuous self-learning and strong drive for
professional growth
 Head of the production team
EXPERIENCE
Plant for the production of plywood boards |
11.2018 – 02.2021
Dart/Flutter Developer Supervised production and led a team of 5,
i3 Engineering | 12.2023 – today ensuring efficient operations.
Redesigned and developed new UI screens and
Process engineer
widgets for a smart home application (mobile &
web). PJSC Ukrgasvydobuvannya branch of
Implemented advanced app logic (search, home UkrNDIGas | 09.2015 - 10.2018
exit logic, permission control per entity). Monitored and analyzed drilling operations,
Developed import/export functionality and ensuring effective evaluation of complex
adapted the app for web. situations.
Reworked device updater logic to extend Maintained detailed records of drilling activities
capabilities and improve reliability and incidents.
.Added and maintained support for various Developed preventive procedures to mitigate and
entities (lights, ACs), devices, templates, and resolve emergencies.
automations.
Built custom API endpoints for data retrieval and
control logic.
Worked with Modbus protocols and bitwise
PROJECTS
operations for low-level device communication.
Refactored and optimized codebase, including Dart/Flutter Projects
API requests and overall app performance
i3 Home
Maintained and extended existing features to
support evolving business needs A smart home app for controlling lights,
sockets, cameras, alarms, heating, and air
Dart/Flutter Developer conditioning. Supports offline mode,
Dot Engineering | 12.2022 – today custom automations, and integration with
third-party smart devices.
Led UI development for a home training app and
published it on App Store and Play Market.
Transformation
Implemented Google and Apple sign-in, built a
video player with TV streaming and offline A subscription-based fitness club platform
support tailored for home workouts with online and
Integrated Firebase (database, storage, analytics, offline video playback, as well as video
push notifications), Google Cloud, RevenueCat, streaming to TV.
AppsFlyer, KeyCRM, and VideoApi
Ran A/B tests (e.g., for payments) and built OnlineLearning
features for progress tracking, achievements, and An online learning platform with in-app
workout reminders. purchases, supporting video streaming,
and user progress tracking.
Dart/Flutter Developer
Avada Media | 05.2022 – 12.2022 Freelance
Developed an e-learning app with Flutter, Developed six apps for a traffic arbitrage
featuring a custom UI and responsive video team across sports, finance, and project
player. tracking domains, adapting to diverse
Integrated Firebase (Firestore, Storage, requirements
Crashlytics, Analytics) for backend services.
Implemented Google and Facebook
authentication for secure login.
Built search, progress tracking, and statistics EDUCATION AND TRAINING
features to enhance UX.
Added Google Maps integration for a cafe delivery SpaceLab
application.
Mobile Developer | 01.2022 – 07.2022
Python Developer Dart/Flutter Developer
Freelance | 05.2021 – 01.2022
Developed scripts for data parsing and Ivano-Frankivsk National Technical
processing. University of Oil and Gas
Applied analysis techniques to extract key 2010 – 2016
insights. Master’s degree in engineering
Created Telegram and Instagram bots for
automation.