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Cyril GromoffCG

Cyril Gromoff

Supermalter

Web Developer | Next.Js | React.Js | WCAG

€600/day
3 projects
Paris, FR
3-7 years

Average response time: 4 hours

Freelancer profile translated to English.
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About Cyril

React / Next.js Frontend Developer - Modern, Performant, and Accessible Interfaces


I transform your ideas, mockups, or existing products into clear, fluid, and scalable web interfaces.

Specializing in **React**, **Next.js**, **TypeScript**, and **web accessibility**, I support startups, agencies, and product teams in creating SaaS, business platforms, dashboards, advanced showcase websites, and e-commerce interfaces.

My approach: a clean,maintainable**, and **user-centricfrontend, with a strong focus on **UX**, **performance**, **responsiveness**, and **accessibility**.

What I master:
  • React 19 and Next.js: App Router, SSR, SSG, Server Components
  • TypeScript: clean, typed, maintainable, and scalable code
  • Pixel-perfect integration from Figma: responsive, mobile-first, UI animations
  • Design systems: Tailwind CSS, Shadcn UI, MUI, Storybook
  • Accessibility: WCAG, RGAA, keyboard navigation, screen readers, ARIA
  • Frontend testing: Playwright, Jest, React Testing Library
  • APIs: REST, GraphQL, Apollo Client
  • Quick team integration: agile environment, code review, CI/CD
I have supported about ten clients includingCHANEL**, **Infomaniak**, **DINUM(Interministerial Directorate for Digital Affairs)

Looking for a developer capable of transforming an idea into a professional, robust, and user-friendly interface?

I respond quickly.
  • French

    Native or bilingual

Can work on-site
Paris (up to 50km), Saint-Julien-en-Genevois (up to 50km), Lyon (up to 50km), Bordeaux (up to 50km), Marseille (up to 50km)

Experience

  • DINUM
    React Next TypeScript Accessibility Developer
    PUBLIC SECTOR
    August 2025 - Today (10 months)
    • Development of React components and improvement of existing ones (Docs)
    • Accessibility refresh on several projects (Docs, File, UI Kit)
    • Application of WCAG / RGAA rules and ARIA best practices
    • Refactoring of components to ensure compliance and keyboard navigation
    • Implementation of E2E tests with Playwright
    • Audit and correction with Lighthouse, Axe, Wave
    • Fix & Responsive Improvement for Visio project
    Web Accessibility Next.js React.js Typescript
  • Agence Dn'D
    React / Next / TypeScript Developer
    April 2025 - July 2025 (4 months)
    • Development of new features in Next14 / Tailwind
    • Bug fixing
    • Focus on quality / clean code
    • Unit tests
    • Accessibility focus
    Next.js React.js Typescript Accessibility
  • CHANEL
    React Next TypeScript Developer
    February 2025 - April 2025 (3 months)
    Complete development of an internal web application (Next.js 15, TypeScript,
    Tailwind CSS)
    - Creation from scratch of an interface used in production by teams
    - Implementation of unit tests and accessibility best practices
    - Strong focus on code quality (clean code, modular components)
    - Responsibility for the entire frontend part (development, maintenance, optimization)
    React.js Next.js Typescript Jest Web Accessibility

Reviews

5.0

Out of 2 ratings

Q

Quentin

Directeur Technique - Suite Numérique

Several months project

-

Reviewed on 4/9/2026

Great collaboration that continues over time. Cyril continued his work on a complex React base with significant accessibility challenges, bringing concrete and lasting improvements. The level of requirement is there, whether for keyboard navigation, focus management, or overall code quality. He is autonomous, proactive, and knows when to challenge, always in a relevant way. PRs are clear, well explained, and truly secure the evolution on the team side. Very good interpersonal skills, simple and effective communication. Nothing to add, we happily continue.
Q

Quentin

Suite Numérique

Several weeks project

-

Reviewed on 9/1/2025

Excellent experience with this developer specialized in accessibility. On a complex React base, he quickly got up to speed and brought visible improvements: complete keyboard navigation, careful focus management, semantics/ARIA aligned with WCAG, corrected contrasts, and some "bonus" performance gains. The PRs were clear and well-argued, with tests and a small deployment plan to avoid regressions. Communication was simple, professional, and always solution-oriented. In short, someone pleasant, reliable, and efficient. We will happily continue to work with him and highly recommend him on Malt.

Recommendations

Ornella RobinsonOR
Albert BarsamovAB
FU
Ornella Robinson and 2 other people have recommended Cyril

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