Ivan

Ivan Kharkivskyi
Senior Frontend Developer | React | TypeScript
Suceava, Romania | [відкрити контакти](див. вище в блоці «контактна інформація») | [відкрити контакти](див. вище в блоці «контактна інформація») | Linkedin .

Summary:
Senior Frontend Developer with 10+ years of experience building high-performance, scalable web applications and
SaaS platforms. Specialized in React.js and TypeScript. Experienced in developing reusable component libraries,
optimizing frontend performance, and building reliable, responsive applications. Strong experience collaborating with
cross-functional teams and working with modern frontend architecture, testing, and CI/CD practices.

Work Experience:
InsulaLabs.
Front-End Developer (January 2025 - Present).
● Developed responsive layouts and interactive features using Angular, TypeScript, and SCSS.
● Optimized frontend code for cross-browser compatibility and high performance across devices.
● Contributed to CI/CD implementation and conducted code reviews.
● Improved code quality and frontend markup to support fast rendering and smooth animations.

Cloudbeds.
Senior Front-End Developer (April 2024 - September 2024).
● Developed modular microfrontends using React.js, enabling independent development and scalable application
architecture.
● Built reusable components for an internal Storybook component library using React.js and Chakra UI, supporting
multiple microfrontends.
● Implemented complex React.js features and pages with a focus on responsive design and cross-browser
compatibility.
● Implemented unit and E2E testing to improve application reliability and stability.
● Optimized frontend performance and reduced page load times through targeted performance improvements and
frontend best practices.
● Refactored existing code to improve performance, maintainability, and scalability.
● Collaborated with designers and backend developers to deliver user-focused features and API integrations.

Cloudbeds.
Middle Front-End Developer (May 2017 - April 2024).
● Developed and maintained interactive features using React.js, Vue.js, and Bootstrap for responsive web
applications.
● Translated UI/UX designs into responsive, production-ready web interfaces.
● Collaborated with designers and backend developers on feature development, component implementation, and
API integration.
● Refactored frontend code and resolved complex bugs to improve application stability and maintainability.
● Conducted code reviews and contributed to frontend coding standards and best practices.
● Participated in Agile ceremonies, sprint planning, retrospectives, and technical discussions.

Freelance experience.
Junior Front-End Developer (December 2013 - May 2017).
● Developed responsive layouts and interactive web interfaces based on design specifications.
● Performed cross-browser debugging and manual UI testing.
● Used PerfectPixel to ensure accurate implementation of visual designs.

Core Technical Skills:
Frontend: React.js, TypeScript, JavaScript, HTML5, CSS3;
Frontend Architecture: Microfrontends, Module Federation, Storybook, Component Libraries;
State & Data: TanStack Query, Zustand, Context API, REST APIs, WebSockets;
UI & Styling: Chakra UI, Material UI, Tailwind CSS, Bootstrap, SCSS, CSS Grid, Flexbox, Responsive Design;
Testing & Quality: PerfectPixel, Jest, Testing Library, Unit Testing, E2E Testing, Manual Testing, WCAG Compliance;
Build & DevOps: Turborepo, Webpack, Rspack, Vite, npm, Docker, Git, GitHub Actions, GitLab CI/CD, Bitbucket
Pipelines, Jenkins.

Backend & Additional Technologies:
Backend & Databases: Node.js, NestJS, PostgreSQL, Prisma (Practical, non-commercial experience);
Additional Frontend: Vue.js, Angular, Next.js;
Design & Prototyping: Figma, Adobe Photoshop;
Templates & Preprocessors: Pug (Jade), Handlebars, Stylus;
AI-Assisted Development: Claude, GitHub Copilot, Cursor;
Other: Chrome Extensions, Email Development, Crowdin / Localization.

Education:
Zaporizhzhia Classic Private University — Master of Business Economics, 2006–2007.
Zaporizhzhia National University — Master of Science, 2000–2005.

Languages:
● Ukrainian — C2 (Native);
● Russian — C1 (Advanced);
● English — B2 (Upper-intermediate);
● Romanian — A1 (Beginner).