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PETRO HERASYMIV
FRONTEND ENGINEER | REACT · TYPESCRIPT

● DETAILS ● PROFILE
Telegram: @Ptr_Herasymiv Frontend Engineer with 7+ years of commercial experience building production web applications with React
and TypeScript in cross-functional teams of up to 12 people. Focused on predictable state architecture,
[open contact info](look above in the "contact info" section) maintainable component systems and smooth delivery from design handoff to release. Currently building an
[open contact info](look above in the "contact info" section) interactive card-training platform with complex game logic, using AI-assisted engineering (Claude Code,
MCP with Figma and Jira) in daily work.

● SKILLS ● EMPLOYMENT HISTORY
Languages & Frameworks Frontend Developer at Yael Acceptic
• React August 2024 — Present
• TypeScript
• JavaScript (ES6+) Browser-based interactive card-training platform for online gameplay and strategy analysis. A rules-heavy
• Next.js interface backed by live server data, built together with PM, TL, designers, backend engineers and QA.
• HTML5, CSS3, SCSS / SASS • Built the gameplay interface in React and TypeScript, turning complex game rules into a responsive UI
State & Data Layer that stays clear for the player
• Redux Toolkit / Redux • Kept game logic predictable as the product grew by modeling it in Redux Toolkit and keeping server data
• TanStack Query separate in TanStack Query
• REST API Integration • Gave the team a shared Chakra UI component base, so new screens are assembled from existing parts
• React Router and look consistent
• React Hook Form
• Tuned rendering on state-heavy gameplay screens so the interface stays responsive during play
UI & Design Systems • Connected Claude Code to Figma and Jira through MCP, so design specs and tasks feed straight into
• Chakra UI development without manual copying
• Material UI Technologies: React, TypeScript, Redux Toolkit, TanStack Query, Chakra UI, React Router, React Hook Form,
• Reusable Component Libraries
• Responsive UI Claude Code, MCP.
Team: 1 PM, 1 TL, 2 FE, 2 BE, 1 QA
Quality & Tooling
• Jest, React Testing Library Frontend Developer at Sk-Telemed
• Code Review
• Git December 2022 — July 2024
• Performance Optimization Company web projects delivered by a 12-person cross-functional team including 3 backend engineers and
AI-Assisted Engineering DevOps.
• Claude Code • Defined how frontend business logic and global state (Redux) are structured, giving every project the
• MCP integrations (Figma, Jira) same clear foundation
• AI-assisted workflows • Wrote the server communication layer with backend developers, so frontend and API changes stayed in
Additional Technologies sync
• GraphQL • Built a set of complex shared components that other features reused instead of rebuilding
• Node.js • Cleaned up the codebase and improved render performance
• Tailwind CSS • Covered logic and components with Jest and React Testing Library
• Bootstrap Technologies: React, JavaScript, TypeScript, Redux, Jest, React Testing Library.
• Webpack
• Google OAuth Team: 2 PM, 2 TL, 4 FE, 3 BE, 1 DevOps
• Vercel
Frontend Developer at Peiko
October 2020 — August 2022
● LANGUAGES ●
Several product projects over almost two years, in a team with PM, BA, tech leads and backend engineers.
Ukrainian – native • Shipped new features and interfaces on React, Next.js and Material UI across different projects
English – B2 • Typed feature code with TypeScript and managed state with Redux Toolkit
• Raised team code quality through regular code reviews
• Improved rendering performance of the applications
Technologies: JavaScript, React, Next.js, Material UI, Redux Toolkit, TypeScript.
Team: 1 PM, 1 BA, 2 TL, 3 FE, 2 BE

Frontend Web Developer at Freelance
April 2019 — July 2020
Custom websites and web applications for multiple clients in HTML, CSS and JavaScript. Handled
requirements, client communication and delivery end to end.

EDUCATION
Bachelor’s degree, Vasyl Stefanyk Precarpathian National University
September 2016 — February 2020. Field of study: Computer Science and Information Technology
Front-end Web Development course, Logos IT Academy
April 2018 — October 2019. HTML, CSS, JavaScript and hands-on project experience.