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NAZAR KUZENKO
Mobile Developer & AI-Powered Consumer Apps
Kyiv, Ukraine

PROFESSIONAL SUMMARY
Senior / Lead Mobile Developer with 5+ years of professional experience building and releasing Android and
Flutter applications. I combine hands-on mobile engineering with product ownership — from architecture
and UI implementation to API integration, analytics, subscriptions, store release, and post-launch iteration.

Contacts My experience covers B2C mobile products, high-traffic consumer applications, AI-powered mobile apps,
media products, and product growth systems. Recently focused on Flutter, Firebase, AI/LLM API
[open contact info](look above in the "contact info" section) integrations, Google Play / App Store releases, ASO, subscriptions, analytics, and rapid product iteration.

https://t.me/Sych1337 WORK EXPERIENCE
[open contact info](look above in the "contact info" section) Sych-Tech | Independent Product Portfolio Mar 2026
sych-tech.com Founder & Mobile Product Engineer
Build and release AI-powered consumer apps for Android and iOS using Flutter
Own the full product cycle from idea validation and UX structure to development,
HIGHLIGHTS store launch and iteration
Integrate Firebase, REST and AI/LLM APIs, analytics events, subscriptions and
monetization workflows
4× Monetization Margin Prepare Google Play / App Store listings, localized metadata, screenshots,
AI API Cost Optimization experiments with ASO
20+ Traffic Delivery
Architectures FAVBET | Commercial Mobile Products May 2022 - Jan 2026
Mobile Routing & Attribution Lead Android Developer / Mobile Delivery Lead
Systems Led Android delivery for the company’s flagship B2C mobile application, from feature
−75% API Spend planning and R&D to release and production support
Token Optimization Without Worked on social and engagement products, supporting new business models,
Quality Loss retention, and user-activity initiatives
Collaborated with product, design, media buying, CRM, and marketing teams on
3% → 32% acquisition funnels, onboarding, communications, and conversion improvements
Store Conversion via ASO Improved mobile architecture, stability, performance, analytics, attribution, push
0% → 11.2% notifications, ASO, and A/B testing
Week-4 Retention Improvement
FAVBET | Commercial Mobile Products Oct 2020 - May 2022
Android Developer
Core Skills Developed Android applications from scratch using Kotlin and Java.
Built UI components, core features, and REST API integrations.
Flutter / Dart Worked with Firebase, Room, OkHttp, WebView flows, analytics, and attribution
SDKs.
BLoC / Riverpod State
Supported release cycles, fixes, and post-launch improvements.
Android SDK / Kotlin / Java
Selected Concurrent Contract Projects
Jetpack Compose / WebView Project-based engagements completed alongside the main full-time role
Clean Architecture / MVVM Efumo SSC | Senior Android Developer Oct 2024 - Apr 2025
REST API’s / Firebase / Room Developed and modernized the Latvijas Radio Android app;
improved radio / podcast streaming. UI quality and app
AI / LLM API Integration
performance; supported full-cycle development of the 4Life
GP Console / AS Connect mobile app

IAP / Subscripinons / AdMob NDA | Lead Mobile Engineer May 2025 - Aug 2025
Led mobile development for a high-load ecosystem with
Firebase / AppsFlyer / Meta SDK
backend integrations , custom traffic-routing systems,
ASO / A/B Testing / CI/CD Telegram Mini Apps and bot integrations
Release Management
3XTER & DEVILS | Lead Android Developer Mar 2023 - May 2025
Led Android and Flutter delivery with modular architecture,
native integrations, platform channels, code reviews, UI/UX
Languages improvements and stronger release quality for B2C mobile
products
English Intermediate (B2)

Ukrainian (Native)