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Software Developer with nearly three years of professional experience building cross-platform mobile and web applications using React, React Native, and TypeScript. Skilled in modernising legacy codebases, building products from scratch, and translating UI/UX designs into scalable, production-ready software within Agile teams. Passionate about continuous learning and clean engineering practices. Currently expanding backend expertise to become a full-stack software engineer, with hands-on experience across APIs, databases, and cloud services.…Software Developer with nearly three years of professional experience building cross-platform mobile and web applications using React, React Native, and TypeScript. Skilled in modernising legacy codebases, building products from scratch, and translating UI/UX designs into scalable, production-ready software within Agile teams. Passionate about continuous learning and clean engineering practices. Currently expanding backend expertise to become a full-stack software engineer, with hands-on experience across APIs, databases, and cloud services.

KHRYSTYNA SYNYTSKA

Web Developer, Software Engineer, Full Stack Developer, +3

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Software Developer with nearly three years of professional experience building cross-platform mobile and web applications using React, React Native, and TypeScript. Skilled in modernising legacy codebases, building products from scratch, and translating UI/UX designs into scalable, production-ready software within Agile teams. Passionate about continuous learning and clean engineering practices. Currently expanding backend expertise to become a full-stack software engineer, with hands-on experience across APIs, databases, and cloud services.…Software Developer with nearly three years of professional experience building cross-platform mobile and web applications using React, React Native, and TypeScript. Skilled in modernising legacy codebases, building products from scratch, and translating UI/UX designs into scalable, production-ready software within Agile teams. Passionate about continuous learning and clean engineering practices. Currently expanding backend expertise to become a full-stack software engineer, with hands-on experience across APIs, databases, and cloud services.

Available to hire

Software Developer with nearly three years of professional experience building cross-platform mobile and web applications using React, React Native, and TypeScript. Skilled in modernising legacy codebases, building products from scratch, and translating UI/UX designs into scalable, production-ready software within Agile teams.

Passionate about continuous learning and clean engineering practices. Currently expanding backend expertise to become a full-stack software engineer, with hands-on experience across APIs, databases, and cloud services.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Language

Ukrainian

Fluent

English

Advanced

Polish

Advanced

Spanish; Castilian

Beginner

Work Experience

React Native Developer at Ei Electronics

June 1, 2025 - June 1, 2026

Led the redevelopment of the SmartLINK mobile application for a European residential fire safety manufacturer. Redesigned the app UI/UX in Figma and implemented the new design in React Native. Migrated 20+ legacy class components to functional components using React Hooks, improving maintainability. Optimised performance, resolved technical debt, and delivered new features. Integrated support for new hardware devices and collaborated with backend developers and QA to ensure quality.

React Native Developer at Shuttlex Inc.

August 1, 2024 - April 1, 2025

Developed two production-ready React Native applications from scratch within a six-month delivery timeline. Built a reusable UI architecture supporting payments, push notifications, AI voice assistant, Live Activities, and real-time communication. Adopted React Native quickly and became independently productive within the first month. Contributed to the startup MVP in a distributed Agile team of 12 engineers.

Frontend Developer (Freelance)

October 1, 2022 - August 1, 2024

Built a multi-user Family Budget application using Firebase Authentication and PostgreSQL. Developed a Weather application using OpenWeather and GeoDB APIs. Created a Pomodoro productivity app using custom state management with useReducer.