Катерина

KATERYNA ROSTOVTSEVA
Frontend Developer
Location: Ukraine (open to remote) Portfolio: https://portfolio-kateryna.vercel.app/
Tel: [відкрити контакти](див. вище в блоці «контактна інформація») GitHub: github.com/KaterynaRostovtseva
Email: [відкрити контакти](див. вище в блоці «контактна інформація») LinkedIn: [відкрити контакти](див. вище в блоці «контактна інформація»)

SUMMARY
Frontend Engineer with experience building scalable web and e-commerce applications using React, Next.js (SSR/SSG), and
Feature-Sliced Design (FSD). Strong expertise in state management and data fetching with Redux Toolkit / RTK Query.
Expanding into Fullstack development with Node.js, Express, PostgreSQL, and React Router 7.

TECHNICAL SKILLS
Frontend: React, Next.js, React Router 7, TypeScript, JavaScript, HTML5/CSS3, Tailwind CSS, MUI
State & Data: Redux Toolkit, RTK Query, Axios.
Backend & DB: Node.js, Express, PostgreSQL (Neon), Prisma ORM, REST API, JWT, Swagger
Tools & Architecture: Feature-Sliced Design (FSD), Git, GitHub, Jira, ClickUp (Agile/Scrum), CI/CD (Vercel, GitHub
Actions)

PROJECTS & DEVELOPMENT EXPERIENCE
IT Resource Management Saa | Sep 2026 – Present
Fullstack ERP/SaaS system for project tracking, workforce management, and automated payroll.
• API & DB: Built a secure REST API with Node.js/Express/TypeScript and PostgreSQL (Neon) via Prisma ORM.
• Frontend: Developed UI with React Router 7, optimizing routing, data fetching, and state management.
• Security & Logic: Implemented JWT auth, Role-Based Access Control, Swagger API docs, and a payroll engine.
Stack: React Router 7, Node.js, Express, TypeScript, Prisma, PostgreSQL, JWT, Swagger, Tailwind.
Great Shop (E-commerce Clothing Platform) | Frontend Developer | Feb 2026 – Sep 2026
High-performance, scalable e-commerce clothing store built with a focus on modern development standards and clean
architectural design.
User Features: Advanced product catalog with complex multi-criteria filtering, persistent shopping cart for cross-session
data saving, and a streamlined multi-step checkout flow.
Team & DevOps Features: Automated CI/CD deployment pipelines directly integrated into Vercel via token-based CLI
configurations; repository management within a professional GitHub Organization.
Architecture & Optimization: Implemented Feature-Sliced Design (FSD) methodology for modular folder organization;
managed state and optimized caching/data fetching with Redux Toolkit and RTK Query to ensure instant UI responses.
Stack: Next.js, React, TypeScript, Redux Toolkit, RTK Query, Tailwind CSS, FSD Architecture, CI/CD (Vercel).
Coffee Store Web App (Coffeelane)| Frontend Developer | May 2025 – Feb 2026
Responsive e-commerce web application for ordering coffee and accessories.
User Features: Product catalog with category filtering, shopping cart with real-time price calculation, checkout flow, and
user authentication.
Admin Features: Dedicated administration dashboard for product and order management, image uploads, and item detail
editing.
UI & UX: Fully adaptive mobile and desktop-friendly interface with smooth accessible navigation and Vite build
optimization.
Stack: React, Redux Toolkit, MUI, REST API, Axios, Vite.
Multiwork Team Collaboration Platform| Frontend Developer | Jul 2024 – May 2025
Platform for team assembly and complex project management.
Features: Project creation, specialist search by skills, cross-functional team assembly, and project subscription tracking.
UI & UX: Built responsive interfaces from scratch with MUI, interactive modal-driven forms, and intuitive drag-and-drop
task management.
Auth & API: Developed full authentication flows with validation, protected routes via React Router, and async CRUD
operations using Axios/Fetch.
Stack: React, Redux Toolkit, MUI, React Router, Axios, React-Beautiful-DND, React-Image-Crop.
Audio Player Web App | Frontend Developer | Feb 2024 – Mar 2024
Interactive desktop web application for audio playback and playlist management.
Core Functionality: Full playback controls, responsive track search, and a real-time audio visualizer synchronized with
playback.
User & Playlists: Playlist CRUD operations with smooth drag-and-drop track reordering, and profile management for
avatars and credentials.
UI & UX: Designed a modern, user-friendly desktop interface with smooth interactions and responsive audio processing.
Stack: React, Redux Toolkit, MUI, Web Audio API, React-Beautiful-DND.

EDUCATION & LANGUAGES
A-Level Ukraine: Frontend & Web Development Course
Languages: Ukrainian (Native), English B1 (actively improving, able to read technical documentation)