Founding designer · Paris
I turn product ambiguity
into systems.
I’m François-Henri Dupuich, designer based in Paris. I work across interface design, design systems and product delivery, with performance constraints in mind.
- +10 Years XP
- design systems
- branding
- dataviz
- motion
Interface, system, delivery.
Good product design does not stop at the screen. I work through the interface, the tokens and rules beneath it, and the constraints that decide whether a product can ship, scale, and stay coherent.
I learned to design under tight resources: smaller teams, limited assets, real performance budgets. That made code, tooling and AI part of the craft. This showcase follows the same principle: lean, fast, measured.
Turning abstract finance into something you can read.
This interactive chart breaks a balance into net invested capital and gains. It makes a counter-intuitive case visible: net invested capital can go negative while the balance remains positive. Switch scenarios, then hover any point to see why.
Saving, then a large withdrawal. Net invested capital crosses zero and goes negative: the stake has been recovered, and the remaining balance is gain.
The second chart models a long-horizon projection with a progressive-derisking path. Toggle the strategy to compare a steadier route with a higher-risk curve; the probability cone, IRR cards and risk score update in real time.
Product motion built in code.
Motion inserts for an investment app release: interface states, transitions and live charts built with Recharts. They were authored in React and Remotion, the same language as the product, then exported here as video.
Design systems for the interface and the way teams work.
Interface system
Tokens, variants, property-first naming, Storybook and Chromatic: a design system treated as a product, not a folder of components.
Team system
Design ops for handoff, tooling, rituals and quality checks: the habits that make design usable inside product cycles.
Alba — the design system I built and run at Nalo. Real tokens, components and theming, here as living code rather than screenshots. Flip the theme to watch the token set re-map:
Identities for products, brands and tech tools.
Brand and art direction across product identities, open-source tooling and community projects. The work spans polished launches and small technical ecosystems, with a feel for how developer culture should look and sound.
Also: legacy marks for Snatch & Zou (Rust CLI download tools), multilayer-perceptron (Erlang), and PluXML community templates.
Technical interfaces where legibility is non-negotiable.
Real-time passenger displays for railway stations, designed around hierarchy, distance and stress. In dense public environments, legibility is not a polish layer. It is the product.
- AI-assisted ideation · RGAA 4gaming product
- Design system + design-to-devpublic broadcast
- Design system from scratchfintech app
Selected work.
Ten years across product, design systems, brand and open source. In Libre mode this section becomes the fast path: scan the grid and follow whatever catches your eye.
Need a founding designer with range?
Looking for a founding or first designer who can own the product surface, the system beneath it and the shipping rhythm around it? Let’s talk.