Олександр

OLEKSANDR SANIN
F R O N T - E N D D E V E L O P E R

SUMMARY
React / React Native Developer with 4+ years of experience building and supporting scalable
applications for mobile and web using JavaScript (TypeScript), React Native (Expo & CLI),
CONTACTS and React.js. Delivered robust user-facing features, enhanced UX, and ensured
maintainability of production apps. Skilled in API integration, UI architecture, performance
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tuning, and team collaboration. Strong communication and proactive contribution to
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documentation and team practices.
Telegram, LinkedIn, Github
Kyiv, Ukraine
EXPERIENCE
CORE SKILLS
React Native Developer
Mobile LaunchLabs · Jul 2024 – Present
React Native (CLI & Expo) LaunchLabs is a US-based agency building sports-related mobile apps for high schools and
Redux Toolkit universities across North America.
Reanimated + Moti
Scorebird Admin:
Gesture Handler
Created and extended multiple app screens, improving UX and functionality for team
WebSocket + Rest API
DeepLinks + Universal Links and schedule management.
React Native Skia Maintained and refactored legacy codebase for scalability and long-term stability.
Push Notification Delivered custom push notifications with interactive actions and implemented
DeskManager for background logic.
Web Integrated universal deep links using AppsFlyer OneLink for seamless navigation.
Led numerous updates including bug fixes, feature rollouts, and UI improvements.
React.js (Gatsby.js)
Scorebird Fan:
Redux Toolkit
Provided continuous support: fixed bugs, modernized legacy logic, updated SDKs and
WebSocket + REST API
libraries.
GraphQL (Apollo)
Material UI Nevco Lead Generation:
Designed and built a lightweight multi-screen form app to streamline lead submission
Tooling and speed up processing for client managers..
Stack: React Native (Expo managed- and bare- flow), Redux Toolkit, REST API, Firebase,
EAS Build
Xcode + Android Studio WebSocket, CI/CD: EAS Build, Bitbucket Pipelines.
Firebase
(Auth/Analytics/Messaging) Frontend Developer
AppsFlyer TenThousand · Jul 2021– Jul 2024
Sentry
TenThousand is a web and mobile development company delivering modern digital solutions
Soft Skills across iOS, Android, desktop, and web platforms.
Dermatology Clinic Platform:
US client collaboration
Enhanced mobile app with new features: onboarding, bookings, chat, and history
PM/designer/backend
tracking.
communication
Documentation contributor Integrated push notifications, analytics, and deep linking with Firebase and AppsFlyer
Languages: English (B2), Participated in rebuilding web version with React.js, improving SEO and user
Ukrainian (Native) experience.
Delivered features, fixed bugs, and ensured consistent UI across platforms.
EDUCATION Construction MVP App:
Built gesture-based polygon drawing interface for floor plans using Skia, Reanimated,
IT School GoIT (2022-23) Gesture Handler.
Fullstack Developer
Enabled users to view, resize, and interact with building layouts directly on mobile.
Donetsk National University of
Stack: React Native CLI, React.js (Gatsby.js), GraphQL (Apollo), Redux Toolkit, REST API,
Economics and Trade (2009-15)
Firebase, WebSocket, AppsFlyer, React native Skia, Gesture handler.
Goods Manager Expert (MSc)