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React Native Engineer with 4.5 years of commercial experience and 1 year as a Team Lead. Built and scaled production mobile apps and a shared React Native SDK used across multiple apps, significantly improving time-to-market and reducing duplicated work via reusable components and business entities. Shipped a white-label B2C retail app end-to-end from scratch within 2 months, led a large screens rewrite of a core e-commerce platform, and delivered platform-level reliability improvements (including tracing and mitigating Android OOM crashes via targeted OTA fixes and release planning).…React Native Engineer with 4.5 years of commercial experience and 1 year as a Team Lead. Built and scaled production mobile apps and a shared React Native SDK used across multiple apps, significantly improving time-to-market and reducing duplicated work via reusable components and business entities. Shipped a white-label B2C retail app end-to-end from scratch within 2 months, led a large screens rewrite of a core e-commerce platform, and delivered platform-level reliability improvements (including tracing and mitigating Android OOM crashes via targeted OTA fixes and release planning).

Denys Hrychulevych

Web Developer, Software Engineer, App Developer, +3

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React Native Engineer with 4.5 years of commercial experience and 1 year as a Team Lead. Built and scaled production mobile apps and a shared React Native SDK used across multiple apps, significantly improving time-to-market and reducing duplicated work via reusable components and business entities. Shipped a white-label B2C retail app end-to-end from scratch within 2 months, led a large screens rewrite of a core e-commerce platform, and delivered platform-level reliability improvements (including tracing and mitigating Android OOM crashes via targeted OTA fixes and release planning).…React Native Engineer with 4.5 years of commercial experience and 1 year as a Team Lead. Built and scaled production mobile apps and a shared React Native SDK used across multiple apps, significantly improving time-to-market and reducing duplicated work via reusable components and business entities. Shipped a white-label B2C retail app end-to-end from scratch within 2 months, led a large screens rewrite of a core e-commerce platform, and delivered platform-level reliability improvements (including tracing and mitigating Android OOM crashes via targeted OTA fixes and release planning).

Available to hire

React Native Engineer with 4.5 years of commercial experience and 1 year as a Team Lead. Built and scaled production mobile apps and a shared React Native SDK used across multiple apps, significantly improving time-to-market and reducing duplicated work via reusable components and business entities.

Shipped a white-label B2C retail app end-to-end from scratch within 2 months, led a large screens rewrite of a core e-commerce platform, and delivered platform-level reliability improvements (including tracing and mitigating Android OOM crashes via targeted OTA fixes and release planning).

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Language

Ukrainian

Fluent

English

Advanced

Russian

Intermediate

Work Experience

Senior React Native Engineer / Team Lead at Buymeua

March 1, 2025 - Present

Led a team of 4 FE engineers (within a larger org of BE/QA/PM/CTO) on a Ukrainian e-commerce SaaS platform for dropshippers and retailers. Architected a shared frontend SDK to cut development costs, improved time-to-market by reusing shared hooks/components/entities, and chose published package distribution over a monorepo for independent app releases. Shipped a white-label B2C retail app (24 screens) end-to-end to app stores in 2 months using EAS Build and OTA updates with multi-environment setup. Rebuilt a dropshipping app (97 screens) with dual-mode switching (BuymEua vs supplier content), role-based pricing/feature/UI logic, and a product export builder for marketplaces. Investigated Android OOM crashes affecting ~1/3 of users, profiled the issue, delivered the fix via the delivery channel, and shipped JS image caching improvements over OTA, followed by engine downgrade in the next store release. Built custom native Swift modules exposed to React Native via Expo Modules, and set up

Senior React / React Native Engineer at Flawless Group

November 1, 2023 - March 1, 2025

Hardened the app for a security-sensitive domain (secure token storage, encryption, jailbreak detection, screen privacy in background, code signing, and no secrets in codebase). Implemented domain-specific admin client features from scratch on top of a core repository, including tailored business logic and workflows across three verticals (cosmetics, real estate, food delivery). Migrated 10+ core admin web modules to a cross-platform client using React Native & Expo, expanding core web functionality to mobile. Maintained and optimized data-dense MLM admin dashboards using Redux Toolkit and React Navigation for predictable state management and smooth routing.

React / React Native Engineer at Intellecta Space

April 1, 2022 - November 1, 2023

Engineered multi-role administrative dashboards (students, faculty, admins) for managing courses, academic schedules, and performance tracking. Implemented PWA functionality (service workers, dynamic caching, background sync) to enable offline access for test-taking and course material inspection under unstable network conditions. Built a complex multi-step form workflow using React Hook Form and Zod/Yup for academic submissions, automated testing, and report generation.