Євген

Ivashyna Eugene
REACT / FULL-STACK DEVELOPER
Poltava, Ukraine | Remote | [open contact info](look above in the "contact info" section) | [open contact info](look above in the "contact info" section)
[open contact info](look above in the "contact info" section) | github.com/onethps

SUMMARY
React / Full-Stack Developer with 4+ years of commercial software development experience, focused on React, TypeScript, PostgreSQL /
Supabase, REST APIs, and third-party integrations. Hands-on with reusable UI, state management, authentication, CRUD workflows,
OAuth, webhooks, CI/CD, and production delivery. Also experienced with React Native products used by thousands of end users.

TECHNICAL SKILLS
Frontend: React, TypeScript, JavaScript, Redux, reusable components, Feature-Sliced Design (FSD)
UI and styling: Material UI, Tailwind, SCSS
Backend and data: PostgreSQL, Supabase, REST APIs, Axios, authentication/login flows, pagination, CRUD
Integrations: OAuth, webhooks, third-party APIs, Strapi, Firebase, Google Cloud
State and delivery: Zustand, MobX, MMKV, custom storage layers, CI/CD, unit testing, Git Flow, code reviews
Additional: React Native, Expo, Reanimated, Gesture Handler, Vision Camera, RevenueCat, n8n, Telegram bots

EXPERIENCE
React / React Native Developer | NltDev | September 2021 - 2025
- Built reusable React components and cross-platform interfaces with React and TypeScript; applied FSD to keep feature structure consistent
and easier to extend.
- Integrated REST APIs for pagination, authentication/login, CRUD operations, Strapi-backed payments, RevenueCat subscriptions, and
third-party services.
- Worked with PostgreSQL and Supabase for application data, backend services, and database-backed features.
- Integrated third-party APIs using OAuth and webhooks for authenticated and event-driven workflows.
- Implemented state and local data handling with Redux, Zustand, MobX, MMKV, and custom storage layers.
- Supported production delivery, deployments, bug fixing, and team development across mobile and interface work.
- Automated recurring development and business workflows with n8n AI assistants and Telegram bots to reduce manual work.
Internal Warehouse Operations and E-commerce Platform | React Native / TypeScript
- Contributed to an internal warehouse e-commerce application used to handle warehouse processing and related operational workflows within
the company.
React Native Developer | Incomm Space | September 2021 - Present
- Shipped production-ready applications used by thousands of end users.
- Improved application performance by more than 35% through code optimization.
- Reduced deployment time by introducing automated CI/CD pipelines.
- Contributed to architecture decisions and code reviews; mentored junior developers.
- Supported feature delivery, bug fixing, production maintenance, and release activities across mobile applications.

SELECTED PRODUCT WORK
Social Media Marketing Collaboration Platform | React / React Native product UI
- Built a marketing platform for creators and influencers to find collaboration opportunities and exchange advertising through social media.
- Implemented creator profiles, partner discovery, collaboration offers and statuses, chat, outcome confirmation, virtual currency, reviews,
report/block flows, and Instagram / Meta professional-account verification.
- Integrated push notifications and cloud services for core product workflows.
Healthcare Monitoring and Appointment Platform | May 2020 - June 2021
- Developed patient and provider interfaces for health metrics, appointments, and secure communication.

EDUCATION AND LANGUAGES
IT-Incubator: Front-end React Developer - React / Redux / TypeScript / Material UI
FreeCodeCamp: HTML / CSS / JavaScript | 2020 - 2021
Languages: Ukrainian; English (B2)

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