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Iryna Korolova
FRONT-END ENGINEER (REACT / TYPESCRIPT)

Lviv, Ukraine Phone: [открыть контакты](см. выше в блоке «контактная информация») Email: [открыть контакты](см. выше в блоке «контактная информация») LinkedIn: [открыть контакты](см. выше в блоке «контактная информация»)

SUMMARY:
Front-End Engineer with 3+ years of experience across e-commerce and marketing web projects. Specialized in React, Next.js and
Gatsby with a strong focus on accessibility, performance and clean, testable code. Comfortable owning features end-to-end - from
clarifying requirements and working with design to implementation, testing and release - in agile, cross-functional teams.

PROFESSIONAL EXPERIENCE:
EPAM Systems – Front-End Engineer
Aug 2022 – Present · Lviv, Ukraine / Remote

Headless eCommerce Platform (Next.js, React, TypeScript)
Collaborated within a large-scale agile environment, aligning with 12 front-end developers to smoothly migrate an
enterprise Hybris storefront to a headless Next.js architecture.
Implemented complex UI features including a robust Product Listing Page with multi-level tree filtering and sorting,
leveraging GraphQL to optimize data fetching for large product sets.
Engineered accessible shared front-end components for an internal library, driving visual consistency and code
reusability across a multi-site e-commerce ecosystem.
Maintained high code quality and consistent styling across the project through ESLint and Prettier, actively contributing
to peer code reviews and unit testing workflows in Azure DevOps.

Enterprise Coaching Platform – Web & Marketing Site (React, Gatsby, TypeScript, Contentful)
Delivered 10+ production-ready marketing and product pages using React and Gatsby with Static Site Generation (SSG),
achieving sub-second initial load times and improved Lighthouse performance scores.
Managed Content Models in Contentful, including defining field schemas, references, and validations.
Improved SEO and accessibility (WCAG) via semantic HTML and ARIA attributes.
Investigated and resolved layout and performance issues, which led to faster and more stable page loads.

Global eCommerce Platform (React, Next.js, TypeScript)
Developed and maintained shared React/Next.js components reused across several e-commerce sites, ensuring UI
consistency within a microservices-based architecture.
Configured analytics and marketing tracking via Google Tag Manager, enabling business teams to adjust campaigns and
monitor user behavior without code changes.
Wrote unit and integration tests with Jest and React Testing Library to support safe refactoring and prevent regressions.
Fixed accessibility, UI and functional defects, ensuring consistent behavior across devices and browsers.

TECHNICAL SKILLS:
Core Stack: JavaScript, TypeScript, React 18, Next.js (App Router, SSR, SSG), Gatsby, Context API, Redux Toolkit
UI & Styling: Tailwind CSS, Styled Components, CSS Modules
Data & Integrations: GraphQL, REST APIs, Contentful CMS, Google Tag Manager
Testing & Quality: Jest, React Testing Library, Storybook, ESLint, Prettier
Architecture & Practices: Headless front-end, Web Accessibility (WCAG 2.1), SEO & Core Web Vitals, performance
optimisation
Tooling: Git, Azure DevOps, Jira, Bitbucket, Postman, GitHub Copilot, Claude

LANGUAGES: EDUCATION: ADDITIONAL TRAINING:
Ukrainian – Native Lviv State University of Internal EPAM University Front-End Program
English – Upper-Intermediate (B2+) Affairs - Law Department Claude Certified Architect –
Master’s Degree in Law Foundations Certification