Ivan

IVAN KASHUBA
[open contact info](look above in the "contact info" section) • [open contact info](look above in the "contact info" section) • https://github.com/Ivan-Kashuba
[open contact info](look above in the "contact info" section) • Europe (GMT + 3)

SUMMARY
Experienced Senior Frontend Engineer (6+ years of experience) specializing in highly scalable React architectures, custom
enterprise design systems, and web performance optimization. Adept at leading cross-functional alignment between
engineering and product design to build type-safe, accessible, and high-impact digital solutions.

Skills

Frontend: React, Next.js, TypeScript, JavaScript, Redux Toolkit, Zustand, Signals, React Query, RTK Query, SWR, Vite,
Webpack, CSS3, HTML5, SCSS, Tailwind, Styled Components, Websocket, GraphQL, Storybook, Ant Design, Material UI,
Shadcn/ui, Chakra UI, React Hook Form, Framer Motion, React-admin, SSR, Lighthouse, Core Web Vitals
Testing: Jest, Vitest, React Testing Library, Playwright, Supertest
Backend: Nest.js, Express.js, PostgreSQL, TypeORM, MongoDB, Mongoose, Node.js
Other: Cursor, Claude Code, GitHub Copilot, Git, GitHub Actions, CI/CD, Docker, REST API, Figma, SEO, Jira, Agile,
Code review

Experience

Meninx Group Remote
Senior Frontend Developer Nov 2023 – Present
 Enhanced AI response accuracy by 23% using prompt engineering techniques.
 Established a unified type and service generation system between backend and frontend, increasing API
integration speed by 2 times, ensuring full type safety, and catching potential errors and schema
mismatches before deployment by 26%.
 Migrated React application from outdated create-react-app to Vite builder, which reduced cold start
development server from 8.7s to 2.4s.
 Developed an advanced XML-based code builder that seamlessly converted between a constructor and
an editor, allowing non-programmers to define initial structures and communicate requirements more
effectively with developers, reducing miscommunication.

Ficus Technologies Remote
Frontend Developer Apr 2022 – Nov 2023 (1 yr 8 mos)
 Decreased first-page load time from 3.4s to 1.8s and reduced initial JavaScript payload by 50% by
implementing code splitting and lazy loading.
 Implemented over 10 custom UI kits and design systems in close cross-functional collaboration with
design teams.
 Wrote complicated test scenarios to improve code work assurance by 40%.

NerdPeople Remote
Frontend Developer Feb 2020 – Mar 2022 (2 yr 2 mos)
 Implemented visualisation graph of user future results based on user's preferences and ongoing steps,
improving user engagement by 18%.
 Implemented CLI system to speed up the development.
 Decreased the size of static images by 30% by transforming PNG to WEBP.

Languages
 English (C1)
 Ukrainian (C2)

Education
Uzhhorod National University
Bachelor’s degree in Computer Engineering
Master’s degree in Computer Engineering HTML5, CSS3, JavaScript, Ty peScript, SA SS, SCSS, L ESS, Tailw ind CSS, React.js, Angular, Vue.js, Next.js, Nuxt.js, Rx JS, Redux, Con text API, MobX, G it, G itHub, G itLab, REST APIs, GraphQL, AJAX, Fetch API, WebSoc kets, Jes t, Cy press, Unit Testin g, Integration Testing, End-to-End Testin g, ESLint, Prettier, Continuou s Integration, Con tinuo us Deploy ment, Docker, Kubernetes, Monorepo, Nx, T urborepo, Webpack, Bab el, Rollup, Parcel, Respons ive Web Design, Mobile-First Des ign, Progressive En hancement, Browser Dev Tools, Accessibility Audits, A11y , Test-Driven Development, TDD, Behavior-Driven Development, BDD, Reactive Programming, State Management, Story book, Figma, Adobe XD, W ireframing, Prototy ping, Web Ac cessibility , WCAG, A RIA, Applications Architecture, Modular Architecture, Design Sy stems, Component L ibraries, Performance Profiling,