Etienne ChevalierAvailable near La Rochelle

Design systems your developers integrate without friction.

I’m a freelance product designer. I design the system and the screens that go with it, for SaaS startups that don’t have a designer yet. Before Astra Studio: Agorapulse and Cegid.

Book a 30-min call See the three projects

Astra System components: stat cards, stepper, task card, tabs, split button, accordion and a filter bottom sheet in dark theme

50+components · Cegid mobile DS

100+screens designed at Cegid

7 yearson SaaS products

16handoff pages

Projects, and the decisions behind them.

Agorapulse asset library: file grid, detail panel, view switcher and storage

AgorapulseWeb app2020 – 2022Keeping visuals inside the productSocial media teams kept losing their visuals between two tools. I connected the asset library to the publishing queue, after interviews and A/B tests.Read the Agorapulse case study

Cegid mobile DS foundations: palettes, text styles, spacing and radius tokens with their usage

CegidiOS and Android2022 – 2026A mobile design system, from scratchThe only designer on an ATS mobile app, with no library to start from. I started with the screens and the system came next: 50+ components and one naming scheme from Figma to code.Read the Cegid case study

Astra System: stat cards, a dark-theme mobile screen and the button spec

Astra SystemPersonal project2026A design system built with AITesting how far Claude and the Figma MCP can go on a real system. AI executes, I keep the judgment: 72 components, light and dark themes, 0 hard-coded values.Read the Astra System case study

One screen, in light and dark.

Nothing was redrawn between the two themes: only the Astra System tokens switch modes. That’s what I set up for you with Foundations.

astra system / playground

Drag the slider, or use the arrow keys.

Three ways to work together.

What each service includes

Where is your product at?

For you

Foundations

To lay the groundwork

from €6,000 excl. VAT

Your design system up and running in about 3 weeks.

Book a 30-min call

Included

Color, typography, spacing, icons, radius
Variables and tokens in Figma
50 ready-to-use components
An organized Figma file

For you

Sprint

For one feature

from €10,000 excl. VAT

A product designer in your team for 4 to 6 weeks.

Book a 30-min call

Included

Feature framing
Joining your rituals
Exploration, mockups, prototype
Dev-ready Figma handoff

For you

Partner

For ongoing monthly work

from €2,000 excl. VAT / month

A designer who knows your product, without a hire.

Book a 30-min call

Included

4 or 8 days a month
Topics prioritized together each month
Joining rituals if needed
Continuity from one month to the next

“Always open to feedback, Etienne listens and takes everyone’s input on board, which makes working with him a real pleasure.”

Matthieu Cannizzaro · Product & Design at Cegid, Etienne’s direct manager · translated from French

Read my background

30 minutes on your product and what’s holding it back.

Intro call
Etienne Chevalier · 30 min

Video callFrench or EnglishBook a 30-min call contact@astra-studio.frWork starts as soon as the quote is signed