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Frontend Developer specializing in React, Next, TypeScript, Web Components and performance-driven UI. Focused on scalable architectures, accessibility standards and seamless API integrations, collaborating closely with UX and backend teams. — Developed and maintained scalable React/Next.js applications using TypeScript, TanStack Query, and TailwindCSS, delivering modular UI components and enterprise-grade web features. — Architected and implemented workspace-based, multi-tenant front-end architecture, optimizing routing, data fetching, and overall code scalability. — Led the migration of a legacy jQuery CRM into a modern React + Redux stack, dramatically improving performance, maintainability, and developer productivity. — Enhanced UX and performance through dynamic states, skeleton loaders, responsive layouts, and accessibility-first design aligned with Figma specs. — Collaborated cross-functionally with design, backend, and marketing teams to deliver performance-driven UI strategies and maintain clean Git workflows (branching & rebasing) for smooth delivery.…Frontend Developer specializing in React, Next, TypeScript, Web Components and performance-driven UI. Focused on scalable architectures, accessibility standards and seamless API integrations, collaborating closely with UX and backend teams. — Developed and maintained scalable React/Next.js applications using TypeScript, TanStack Query, and TailwindCSS, delivering modular UI components and enterprise-grade web features. — Architected and implemented workspace-based, multi-tenant front-end architecture, optimizing routing, data fetching, and overall code scalability. — Led the migration of a legacy jQuery CRM into a modern React + Redux stack, dramatically improving performance, maintainability, and developer productivity. — Enhanced UX and performance through dynamic states, skeleton loaders, responsive layouts, and accessibility-first design aligned with Figma specs. — Collaborated cross-functionally with design, backend, and marketing teams to deliver performance-driven UI strategies and maintain clean Git workflows (branching & rebasing) for smooth delivery.

Yevhen Kartashian

Front-End Developer, Web Developer, Developer

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Frontend Developer specializing in React, Next, TypeScript, Web Components and performance-driven UI. Focused on scalable architectures, accessibility standards and seamless API integrations, collaborating closely with UX and backend teams. — Developed and maintained scalable React/Next.js applications using TypeScript, TanStack Query, and TailwindCSS, delivering modular UI components and enterprise-grade web features. — Architected and implemented workspace-based, multi-tenant front-end architecture, optimizing routing, data fetching, and overall code scalability. — Led the migration of a legacy jQuery CRM into a modern React + Redux stack, dramatically improving performance, maintainability, and developer productivity. — Enhanced UX and performance through dynamic states, skeleton loaders, responsive layouts, and accessibility-first design aligned with Figma specs. — Collaborated cross-functionally with design, backend, and marketing teams to deliver performance-driven UI strategies and maintain clean Git workflows (branching & rebasing) for smooth delivery.…Frontend Developer specializing in React, Next, TypeScript, Web Components and performance-driven UI. Focused on scalable architectures, accessibility standards and seamless API integrations, collaborating closely with UX and backend teams. — Developed and maintained scalable React/Next.js applications using TypeScript, TanStack Query, and TailwindCSS, delivering modular UI components and enterprise-grade web features. — Architected and implemented workspace-based, multi-tenant front-end architecture, optimizing routing, data fetching, and overall code scalability. — Led the migration of a legacy jQuery CRM into a modern React + Redux stack, dramatically improving performance, maintainability, and developer productivity. — Enhanced UX and performance through dynamic states, skeleton loaders, responsive layouts, and accessibility-first design aligned with Figma specs. — Collaborated cross-functionally with design, backend, and marketing teams to deliver performance-driven UI strategies and maintain clean Git workflows (branching & rebasing) for smooth delivery.

Available to hire

Frontend Developer specializing in React, Next, TypeScript,
Web Components and performance-driven UI. Focused on
scalable architectures, accessibility standards and seamless
API integrations, collaborating closely with UX and backend
teams.

— Developed and maintained scalable React/Next.js applications using TypeScript, TanStack Query, and TailwindCSS, delivering modular UI components and enterprise-grade web features.
— Architected and implemented workspace-based, multi-tenant front-end architecture, optimizing routing, data fetching, and overall code scalability.
— Led the migration of a legacy jQuery CRM into a modern React + Redux stack, dramatically improving performance, maintainability, and developer productivity.
— Enhanced UX and performance through dynamic states, skeleton loaders, responsive layouts, and accessibility-first design aligned with Figma specs.
— Collaborated cross-functionally with design, backend, and marketing teams to deliver performance-driven UI strategies and maintain clean Git workflows (branching & rebasing) for smooth delivery.

Skills

React JS

TypeScript

Tailwind

Experience Level

React JS

Expert

TypeScript

Expert

Tailwind

Expert

Language

English

Advanced

Ukrainian

Fluent

Russian

Fluent

Spanish; Castilian

Intermediate

Work Experience

Frontend Developer at MadAppGang

May 1, 2025 - October 27, 2025

— Built and maintained complex front-end modules for enterprise-grade web platforms using ReactJS, NextJS, TypeScript, TanStack Query and TailwindCSS. — Developed modular, scalable UI components (tables, forms, dashboards, sidebars, etc.) aligned with Figma specs and company design system. — Implemented workspace-based architecture, routing and data-fetching logic to support multi-tenant environments. — Collaborated with backend and design teams to optimize API integrations, improve UX consistency, and ensure high performance across views. — Enhanced user experience with dynamic states, skeleton loaders and responsive layouts optimized for accessibility and mobile. — Contributed to CI/CD workflows and maintained clean Git branching an

Frontend Developer at CALL TO ACTION

November 1, 2020 - February 5, 2025

— Developed scalable web applications and complex marketing platforms using React, TypeScript and modern frontend tooling, architecting modular component libraries with TailwindCSS and Material UI to ensure maintainability and cross-browser responsiveness. — Built and enhanced a customer portal using React, Next and TypeScript, improving code reliability, SSR/SSG, and developer experience. — Led the migration of a legacy jQuery-based CRM to a modern React-Redux architecture, boosting performance, scalability, and maintainability. — Improved website performance by 50% through optimization techniques, refined UI/UX and streamlined collaboration between developers, designers, and marketing teams.