Clément Grellier

CG

Open to opportunities

Clément Grellier

@clementgrellier

I build premium interactive websites that bridge design systems, UX, and frontend engineering.

What I'm looking for

I'm looking to build premium, highly interactive web experiences where I can connect high-fidelity design, product UX, motion, and robust frontend engineering.

I've worked independently since 2014 as a front-end developer and UI engineer, turning high-fidelity design systems, product UX, and complex interactive layouts into robust digital experiences.

For GENIE, I engineered a high-fidelity AI-focused interface with custom interactive components and fluid user journeys. I also collaborated on ONTO's high-performance studio showcase and built ThirtySix Studio's motion-led portfolio, optimizing heavy media and transition sequences for smooth rendering.

I work across React, TypeScript, Next.js, Three.js, GSAP, and modern frontend tooling, moving from bespoke showcase sites to state-managed applications. I take ownership of responsive implementation, animation systems, SEO, Web Vitals, asset optimization, accessibility, and browser compatibility.

My work has received 5 Awwwards Site of the Day awards, 3 FWA Site of the Day awards, and 9 CSS Design Awards Site of the Day awards, alongside features in the GSAP Showcase, The Webby Awards, Communication Arts, and other creative platforms.

Experience

Work history, roles, and key accomplishments

SE

Current

Freelance Front-End Developer & UI Engineer

Current

Self Employed

Jan 2014 - Present (12 years 7 months)

Freelance front-end developer since 2014, bridging design and engineering by translating complex UI/UX wireframes into scalable, responsive, and pixel-perfect websites. Specialized in building premium, highly interactive websites with React, TypeScript, and modern animation layers (GSAP).

HTML5 TypeScript React Next.js Git Responsive Design UI Components Web Performance SEO Accessibility

Education

Degrees, certifications, and relevant coursework

GL

Gobelins, l'école de l'image

Concepteur Réalisateur Multimédia, Multimedia

Pursued studies in multimedia design and production at Gobelins, l'école de l'image in Paris.

IL

IUT de Laval

DUT, Services and Communication Networks

Earned a DUT in Services and Communication Networks from IUT de Laval.

Tech stack

Software and tools used professionally

Next.js

three.js

React

JavaScript

HTML5

ES6

CSS 3

TypeScript

Toolkit

Bridge

Availability

Open to opportunities

Location

France

Authorized to work in

Website

clementgrellier.fr

Portfolio

clementgrellier.fr

Social media

Job categories

Front End Developer UI Engineer Creative Developer Web Developer UX Engineer Frontend React Developer Frontend Development UI Frontend Developer UX UI Front End Developer React Frontend Developer Frontend Engineer Frontend Web Development Frontend Lead Developer

Skills

HTML5 CSS SASS SCSS JavaScript TypeScript React Next.js Git Responsive Design Design Systems UI Development Animation SEO Asset Optimization Browser compatibility Accessibility ThreeJS ES6 Toolkit Bridges

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