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Embed with your product team
Join an in-house team to lead market and competitor research, set product strategy, and prototype the next state in Figma and as a working interactive build via vibe coding.
Senior Product Design Partner for decisions that compound.
I'm Lucas Rappart — a Product Design Partner working remotely with founders, design leads, and executive teams across Switzerland, Europe, and the US. Strategy, IA, hi-fi design, systems.
Get in touchSelected clients
Fortune 500 enterprises to Series A founders, across healthcare, hospitality, media, marketplaces, and climate tech. I help teams ship hi-fi product surfaces, set up design systems that compound, and translate complex workflows into clear customer-facing experiences.
- 15+ clients across Europe, Switzerland & the US
How I partner
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Ship the first version with founders
Work with early-stage founders to pin down the real need, prototype the core flows, and ship a v1 that holds up in front of real users.
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Map what comes next
Run strategic user research with your stakeholders, set a 5 to 10 year vision, and prototype how AI could reshape the product before you commit.
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Upskill your team on AI
Partner with executives and product teams in mid-size and enterprise companies on a clear AI playbook: where designers should lean on it, where to hold back, and how PMs can ship their own prototypes.
WHAT CHANGES
What changes when we work together.
On your own
Together
Every release fixes a symptom. Nobody on the team can name the user need that actually moves the metric.
A sharp hypothesis on what users actually need, tested in two-week cycles. Activation bends within a quarter and the team can explain why.
Your v1 is twelve months of Slack threads and three pivots away. The founder prototypes in their head; the team waits for a brief.
A working v1 in front of paying users in eight weeks. Discovery, prototype, and core flows shipped end to end.
The roadmap looks twelve weeks out at best. Nobody has drawn the product you should be running in three years.
A vision prototype of where the product lives in three to five years, anchored in real stakeholder research. Quarterly bets stop feeling random.
Half the team is using AI in their flows. The other half is afraid to. No shared rule on where it helps and where it hurts.
A clear AI playbook designers and PMs can quote in a thread: where it accelerates work, where it dilutes craft, and how PMs ship their own prototypes.
Selected case studies
Foodhack
A Switzerland-born impact platform that lets curious investors discover, back, and track European and American startups through trusted media, live conferences, and a dedicated portfolio tool.
Hafnova — Dohzel
A Swiss-built mobile cybersecurity app from Hafnova that protects individuals and businesses without asking them to learn the subject — designed in Vaud, made for everyday Swiss users.
Digital Key
A two-week design sprint reframing car ownership around shared mobility — a mobile prototype letting an owner issue a secure, time-bound digital key to share their vehicle on demand.