Oleh Ветеран

CHORNYI OLEH
STRONG JUNIOR FLUTTER DEVELOPER
As for now, I have almost 2 years (22 months) of commercial experience in mobile
development. Since I switched to IT domain, I’m constantly evolving as a Mobile Application
Developer, eager to obtain expertise in cross-platform apps development.

CONTACT WORK EXPERIENCE
Vinnytsia, UA
Junior Flutter Developer | Freelance
[відкрити контакти](див. вище в блоці «контактна інформація»)
March 2026 - Present | Logistics app development (transport domain)
in a small Ukrainian IT boutique. As a Flutter Developer, I am
[відкрити контакти](див. вище в блоці «контактна інформація»)

@olchornyi responsible for the whole mobile app, including UI, authorisation, state
management, REST API and small things (as date piking, animations,
ff
o line accessibility) .

EDUCATION
I. State University of Trade

Junior Flutter Developer | Publia
and Economics (2005-2010)
July 2025 - February 2026 | EdTech app development within a team of
BA Economics,
Designer and Product Owner (+ backend developer, frontend
MA Commerce

developer, project manager, tech lead). As a Flutter Developer, I was
solely responsible for the Dart code, development and maintenance
II. National Pedagogical

of the app both for iOS and Android.

Dragomanov University

(2012-2018)

PhD Philosophy,

Memoling app: App Store, Google Play

MA English Translation

Key Achievements:

III. Vinnytsia National Agrarian
f
I developed in-depth system o state managemen t

University (2018-2020)
Used REST APIs, sockets and rtc to enable user - AI interaction

Post PhD Studies Economics CI/CD establishment and maintenance

f f z
Smooth and subtle system o animation (scroll, ade, si e, position,
color, icons, timers )

HIGHLIGHTS
Features and Technologies:

User interface & business logic (Flutter, Dart)

Flutter / Dart (mobile)

GoLang (server)

Navigation and routing - shell routes, redirection (Go Router)

REST API (mobile+server)

State management (Riverpod Generator)

State Management(mobile)
REST APIs - 50 endpoints (Dio, Json Annotation, Freezed, Chopper)

Web Socket - text, audio & data (dart: io)

Web Rtc - audio and video realtime connection (Live Kit)

LANGUAGES CI/CD - flavours, scripts, workflows (Xcode Cloud, GitHub Actions,

Ukrainian - Native
Dot Env)

English - Upper-Intermediate
z
Moneti ation - subscriptions (App Store Connect, Play Console,

French - Pre-Intermediate Adapty)
WORK EXPERIENCE

Features and Technologies (Publia experience continuation):

Push notifications (PushWoosh, Firebase Messaging).

Analytics and crashlytics (Firebase Analytics, Firebase Crashlytics, Mixpanel, Sentry, Facebook App
Events, Ux Cam)

L
Internationalization & localization (Intl, Slang, ingo.dev)

Authorization - OTP, linking, verification (Supabase, REST endpoints, Apple & Google Sign In, Deeplinks)

Audio, video & microphone - (Audioplayers, Video Player, Record)

L
Animations - icons, native and custom ( ottie, Flutter Animations, Other Pakages)

Git, GitHu b

Junior Flutter Developer | charity lab
October 2024 - July 2025 | Crowdfunding and social app development within a Flutter team which was
constantly cooperating with backend, designer, devOps teams, project managers and CEO. My primary
tasks included UI development, state management, user interactions handling and code reviewing.

Features and Technologies:

User interface & business logic (Flutter, Dart)

Navigation and routing - shell routes, redirection (Go Router)

State management (Bloc, Cubit, Dependency Injection)

REST APIs (Dio, Json Annotation, Retrofit)

Device hardware and data integration (TouchId, FaceId, Gallery)

Monetization and payments integration (Rozetka Pay)

Clean Architecture, Refactoring, Code Review

Git, GitHub (branching, pull requests, rebase, cherry picking)

Junior Flutter Developer | YR-Solutions

July - September 2024 | Fitness app and Beauty app development within a team of 3 Flutter / Flutter Flow
developers, backend developer, designer and project manager. On this job, my primary tasks included
bug-fixing and software development using:

Dart, Flutter, Flutter Flow

Bloc, Provider, REST APIs, Firebase,

RevenueCat, MailChimp, GooglePlay, AppStore, Git, GitHub.

Here I got acquainted with complex projects’ architecture and mobile development patterns.

Military Service

March 2022 - June 2023 | During this period I was a military servant
(division secretary) during Russian-Ukrainian war.
PET PROJECTS
Check this link to Or you can visit
discover my projects my GitHub profile.
on Google Play.
Besides mobile apps development I’m also constantly learning new skills. Recently (spring 2026), I’ve
created a pet project, which consisted of mobile app (Flutter) and server app (GoLang). Mobile app -
authorisation, state management, REST API, custom blockchain integration. Server app - authorisation,
REST API (endpoints), database, custom blockchain on server (code - GoLang, block - JSON) with coins
generation, AI agent (Gemini) integration on server.

PROFESSIONAL COURSES
The Complete Flutter Development Bootcamp with Dart (by Angela Yu) - Udemy

Flutter testing : Unit, Widget & Integration testing (by Richa HarSivo) - Udemy

Flutter & Dart - The Complete Guide (by Maximilian Schwarzmuller) - Udemy

Build Apps w/Swift + SwiftUI (by Prof. John Gallaugher) - YouTube

Go - The Complete Guide (by Maximilian Schwarzmuller) - Udemy

Serverpod Ground Training (by Serverpod Academy)

TypeScript (by Ihor Mykhailichenko) - ITVDN

QA Specialist - Genius Space

Figma for Web Design & Freelancing: Master UI/UX (by Cristian Barin) - Udemy

Figma. Online store design (by Dmitro Okhrimenko & Igor Lisitsky) - ITVDN