Rémi Charreau

Rémi Charreau

Design Engineer @ Vibe.coAvailable

Design Engineer covering both design and front-end, end-to-end, with 16 years of experience. I specialize in complex B2B SaaS.

Lyon, France·
/llms.txt··

What I do

Product Design

From a problem or an idea all the way to shipped features, on complex B2B products.

  • User flows & wireframes
  • UI design & prototyping
  • Design systems & component libraries
  • Design tokens & theming

Front-End

I write and ship the code. What I design, I deliver — deployable, in your stack.

  • Next.js, React, TypeScript, Tailwind
  • Animations & micro-interactions (Framer Motion)
  • Responsive & accessible layouts
  • Performance optimization

Growth

Design and build of the surfaces that drive conversion.

  • Landing page design & build
  • A/B test setup & analysis
  • Onboarding & activation flows
  • Funnel audit & optimization

Work

2026
2025
2024
2023
Vibe.co

Vibe.co · Design Engineer · Mar 2023 — Now

Covering both Product and Growth at a New York-based CTV advertising SaaS. Acquired by Walmart in June 2026.

  • Owned product features solo, end-to-end: from mockup to deployment (Next.js, React, TypeScript, Shadcn & Framer Motion)
  • Implemented the design system & component library with shadcn/ui, styled to match Tailwind UI
  • Solely owned onboarding flows for new clients
  • Solely owned the public website & landing pages
2023
2022
Hexa/eFounders (Cohort)

Hexa/eFounders (Cohort) · Design Engineer · Jun 2022 — Mar 2023

Covering design and frontend at Cohort, a B2B SaaS loyalty platform built within eFounders / Hexa, one of Europe's leading startup studios. Acquired by Brevo in 2025.

  • Design system built from scratch
  • Back-office interface for brand teams
  • White-label customer-facing platform
2021
2020
invoxia

invoxia · Head of Product Management · 2020 — 2021

Improved the mobile app and the B2B SaaS platform for this connected asset-tracking company.

2019
2018
2017
DentalMonitoring

DentalMonitoring · Product Manager & Designer → Head of Design · Dec 2017 — 2020

Embedded with a mobile team of 5 developers as both Product Manager and Designer to fully redesign the patient-facing scanning experience.

  • Full redesign of the mobile scanning experience
  • Created the mobile design system
  • Integrated ML algorithms into the patient scanning flow
  • Managed the mobile team roadmap & delivery
  • Designed the ScanBox, a physical hardware device
2016
SimpliField

SimpliField · Product Manager & Designer · 2016 — 2017

Product design and feature delivery on a retail execution platform, including its design system built from scratch.

2015
2014
2013
2012
2011
2010
Freelance / Co-founder

Freelance / Co-founder · Designer / Developer · 2010 — 2015

Freelancing for clients while building my own products on the side.

  • Websites built with CMS and JavaScript
  • Mobile apps in Swift

Selected work

3D Tile Background
B2B Landing Page
Demo Filter
Coupons
Empty state settings
Video Ad Creator
Launch Modal
Vibe Wrapped
Vibe Wrapped
Onboarding Flow
Calendar component
Time Slots

Testimonials from LinkedIn

Rémi has been working with us at Cohort for a few month as a freelancer and we have been extremely pleased with his work. He started doing Product Design, and we were really pleased by the overall quality of the designs
Nathan Barraillé

Nathan B.

Co-founder & CTO at Cohort (ex Google/LinkedIn)Managed Rémi directly · Sep 2022
Rémi has been freelancing with us at Vibe for several months, and we've been impressed with his contributions. His unique combination of design and front-end development skills makes him exceptionally effective and
Nicolas Hémidy

Nicolas H.

Head of Product @ VibeManaged Rémi directly · Dec 2023
I had the pleasure of working with Remi as a freelancer on Baback, and I want to highlight his outstanding skills in design and development. His contribution was crucial in enhancing the overall user experience of the
Benoît Tallandier

Benoît T.

Co-founder & CTO at BabackManaged Rémi directly · Nov 2023
I can only recommend Rémi for his skills as a designer, graphic artist, and website creator. During the project we entrusted him with, he showed impressive creativity, expertise, and efficiency. He also remains available
Jean-Marc Sabet

Jean-Marc S.

CEO & Founder @ b-sharpeClient · Jan 2015
I had the opportunity to work with Rémi on the complete overhaul of our SaaS website. What started as a planned modernization of our pages went well beyond a visual refresh: he challenged our business needs with an
Rudy Goury

Rudy G.

Co-founder at Vook.aiClient · Jul 2025
We worked with Rémi on revising our logo and brand guidelines, as well as redesigning our website. What we appreciated most about this collaboration: his understanding of our needs, his strong proposals, his technical
Jordan Guyon

Jordan G.

Chief Operating Officer at Lys TherapeuticsClient · Nov 2014

Learning

2025Animations.devOnline course by Emil Kowalski

2023Next.jsOnline course by Maximilian Schwarzmüller (udemy.com)

2022Refactoring UIBook by Adam Wathan & Steve Schoger

2021How To Write Unmaintainable CodeBook by Roedy Green

2020TypeScriptOnline course by Maximilian Schwarzmüller (udemy.com)

2019The Design of Everyday ThingsBook by Donald Norman

2019React.jsOnline course by Maximilian Schwarzmüller (udemy.com)

2018(Design) SprintBook by Jake Knapp

2017Atomic DesignBook by Brad Frost

2016Designing InterfacesBook by Tidwell, Brewer & Valencia

2016The Lean StartupBook by Eric Ries

2015SwiftOnline course by Lynda.com

2011JavaScriptOnline course by Lynda.com

2007Flash & ActionScript 3Book

FAQ

Are you only open to freelance contracts?

No, I'm open to any contract type: freelance, salaried (CDI), fixed-term, whatever works best for you. The structure matters less to me than the project and the team. For foreign companies, I already run my own company in France and can invoice you directly, so there's no admin hurdle on that side either.

Are you open to long-term engagements?

Yes, long-term is what I prefer. I'm happy to commit to multi-month engagements so I can really get into the product, the codebase, and the team rather than just shipping one-off tasks.

What's the minimum engagement?

One month firm after the trial. It's pretty standard for US clients and gives both sides enough time to ramp up and ship something meaningful before deciding to continue. After that first month, the engagement rolls month-to-month with a 2-week notice on either side.

How soon can you start?

Usually about 1 month from signing. I always honor a clean handover with current clients. If something is more urgent, I can sometimes start with a few hours per week to unblock things while ramping up.

Can we do a trial before committing?

Absolutely. I usually suggest a 2 or 3 day paid trial (billed at my standard daily rate) on a small, well-defined piece of work. It's the fastest way to see if we click on communication, code quality, and design taste before signing up for something longer.

Can you invoice international clients?

Yes. I run my own company in France and invoice clients worldwide in EUR or USD. For EU clients I handle VAT through reverse-charge; for non-EU clients (US, UK, etc.) invoices are issued without VAT. Payment by wire transfer, Wise, or Stripe, whatever's easiest for you.

Do you sign NDAs?

Yes, happy to sign whatever NDA you have in place. If you don't have one, I can provide a standard mutual NDA.

Who owns the work you produce?

You do. Everything I produce is yours upon payment: design files, code, assets, all of it. No strings attached.

What if it doesn't work out?

After the first month (which is firm), either side can end the engagement with a 2-week notice. I'll invoice for work done up to the end date and hand over everything in good shape: files, repo access, documentation.

Do you do design or code?

Both. I'm a Design Engineer: I own the work end-to-end, which removes the back-and-forth between designer and developer.

Are you using Figma?

I've spent years in Figma and still know it well, but I use it less and less these days, mostly for preparing assets. My current workflow: I sketch on paper with a pen, then jump straight into code. It's faster, I iterate in the real medium, and the result is the same: production-ready interfaces that look and feel polished.

What's your stack?

My favorite stack: Next.js, React, TypeScript, Tailwind, and Framer Motion on the front-end; Figma for assets when needed; Slack and Linear for day-to-day collaboration. I'm comfortable plugging into whatever your team already uses though.