Vladyslav

VLADYSLAV KOSENKO
Flutter Engineer
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ABOUT ME
Flutter Engineer with 3+ years of commercial experience building production mobile and web
applications across fintech, iGaming, and consumer products. Experienced in delivering products from
MVP to production, modular Flutter architecture, real-time communication, native iOS/Android
integrations, third-party SDKs, automated testing, and CI/CD. Strong in Flutter/Dart, BLoC/Cubit, Clean
Architecture, REST APIs, WebSockets, and production release workflows.

WORK EXPERIENCE
SpaceCrew Finance | Apr 2026 - Sep 2026
Flutter Engineer | Fintech
Project 1: ClickCredit | South Africa
• Built and evolved a Flutter lending product from MVP to production across web, iOS, and Android, owning
major client-side flows and integrations.
• Took responsibility for the release cycle, including release PRs, hotfixes, production tags, and stabilization
across multiple production versions.
• Implemented end-to-end lending flows: registration, affordability checks, bank verification, bank
statements, OTP contract signing, application status polling, customer cabinet, payments, and repeat
loans.
• Integrated FaceTec, Hyphen, DebiCheck, Altron, device fingerprinting, GTM/GA4, and Scaleo into identity,
payment, banking, and analytics flows.
• Integrated Corezoid-driven backend workflows and moved OTP timing, attempt limits, and form-based
navigation to server-controlled logic.
• Improved Flutter Web reliability with guarded browser navigation, session-expiration handling, deep links,
maintenance mode, and mobile test coverage with widget/BLoC tests.
Project 2: Clicredito | Colombia
• Implemented registration, login/OTP, session handling, loan-status flows, and customer-cabinet
functionality against production APIs.
• Built a native FaceTec Android integration in Kotlin via MethodChannel, including Liveness Check, Photo ID
Scan, theming, and localization.
• Added unit-test coverage and optimized Flutter UI performance using RepaintBoundary, cached UI
configuration, and targeted BLoC rebuilds.
DEDO | May 2026 - Present
Flutter Engineer | Part-time / Contract
• Architected and developed a white-label Flutter app for iOS and Android for smart intercom and
building-access services using a modular monorepo and Clean Architecture.
• Built real-time video intercom calls over SIP/WebRTC with an Asterisk backend, including a native Kotlin
FCM receiver and foreground service for reliable incoming calls in the background.
• Implemented backend-driven branding and feature configuration, per-client build flavors, SMS/OTP
authentication, session restore, document scanning, and subscription payments with cards, Apple Pay, and
Google Pay.
• Built shared networking and resilience layers with token refresh, centralized error handling, maintenance
mode, and continuous connectivity tracking.
• Set up Codemagic CI/CD with analyze, format checks, automated tests, caching, and tag-triggered
TestFlight releases per white-label client.
• Maintained strong automated coverage with unit and widget tests and supported QA-driven stabilization
across production builds.

Favbet Tech | Oct 2025 - Apr 2026
Middle Flutter Engineer | iGaming Industry
Project 1: Large-scale Regulated Casino Platform | Casino UA
• Played a key role in refactoring a large legacy Flutter monolith into a modular architecture, improving
separation of concerns and long-term maintainability.
• Developed and maintained core casino functionality in a high-traffic production environment and resolved
complex production issues.
• Refactored performance-sensitive and tightly coupled areas of the codebase to improve application
performance and code quality.
Project 2: Crypto-focused Casino Application | NDA
• Developed a new Flutter crypto-casino application from scratch using the core architecture and reusable
modules of the primary platform.
• Implemented deep linking, push notifications, complex state-management flows, real-time UI updates, and
advanced user interactions.
• Integrated REST APIs and supported the application across the full development lifecycle, including
maintenance and production issue resolution.
Unicorn STC | Jan 2024 - Oct 2025
Flutter Engineer | Software Development Agency
Project 1: Solar Studio Network App | Sunpoint
• Implemented device brightness control through Method Channels to improve QR-code scanning
reliability.
• Developed a module for retrieving and processing real-time data from POS systems.
• Added unit and widget test coverage and migrated the project from a monolithic structure to a modular
monorepo.
• Built core user flows including onboarding and password recovery for a subscription-based consumer
application.
Project 2: Camper Lifestyle & Utility App | Camper Manual
• Developed the application from scratch using a monorepo architecture.
• Implemented a guide system with deep links for individual topics and sections.
• Built a Sun Compass feature using magnetometer and gyroscope data.
• Developed vehicle registration flows with dynamic content filtering and integrated paywalls.
Maksoft | Jul 2023 - Jan 2024
Junior Flutter Developer | Startup Company
• Developed a Telegram Mini App as the sole Flutter developer.
• Designed an adaptive interface for consistent rendering inside Telegram WebView.
• Researched platform-specific constraints and used BLoC for predictable application state and data flow.

SKILLS
• Core: Flutter & Dart, Async, Streams, Isolates, • Integrations: REST APIs, WebSockets,
Flutter Web, iOS, Android. SIP/WebRTC, Asterisk, payment systems, POS
• Architecture: Clean Architecture, modular integrations, Firebase, third-party SDKs.
architecture, monorepo, Melos, Mason, internal • Analytics: Google Tag Manager, GA4, Scaleo,
packages, SOLID, OOP. event and attribution tracking.
• State Management: BLoC / Cubit, Riverpod, • Native & Hardware: Method Channels, Kotlin/Swift
Provider. interaction, FCM native receiver, foreground
• Navigation: AutoRoute, GoRouter, complex deep services, device sensors.
linking. • Testing & CI/CD: Unit, widget and BLoC testing,
• Fintech & Identity: Corezoid, FaceTec, Hyphen, Codemagic, GitHub Actions, Azure DevOps,
DebiCheck, Altron, device fingerprinting, identity TestFlight, automated release pipelines.
verification flows. • Mobile Specific: White-label/flavors, responsive
UI/UX, localization, push notifications, app
lifecycle and session handling.

Languages: English (Intermediate), Ukrainian (Native), Russian (Native)