method · the lens · not a services page
I work where
behavior, systems,
and conversion intersect..
Three layers most teams treat separately, and where every meaningful product problem actually lives. This page is the lens. Not a sales page, not a price list. If your problem looks like this, we can talk it through.
01
Three layers, where the work actually lives.
01 · behavioral
What people actually do, and why.
Cognitive load, risk perception, effort cost, uncertainty, narrative coherence. The questions teams almost never ask: why is the rational thing not happening here?
Tools. Behavioral interviewing, friction mapping, mental-model audits, narrative coherence analysis.
02 · systemic
What's holding the behavior in place.
Legacy code, compliance gates, organizational silos, incentive misalignment. The constraints no roadmap names and every funnel suffers from.
Tools. Service blueprint, stock-and-flow modeling, leverage-point analysis, organizational mapping.
03 · conversion
Where the business actually moves.
Acquisition, activation, retention. Every insight from the first two layers earns its place by being tied here. If it doesn't move a number, or credibly explain why a number didn't move, it doesn't ship.
Tools. Funnel instrumentation, A/B + multivariate, decision memos, learning archives.
Most teams pick one layer.
The work lives at the intersection.
02
Five steps, demystified.
No proprietary framework, no double-diamond rebranding. The loop most working designers know, written down so we agree on the artifact at each step before we start.
01
Discover
typically 2 weeks · artifact opportunity log
Where does the funnel actually break, and what evidence already exists for why? Interviews, session replays, prior research, analytics audit.
02
Frame
1 week · artifact opportunity map
Translate findings into a map. Behavioral hypothesis, system constraint, business lever, one row per finding. The artifact teams keep coming back to.
03
Test
2, 6 weeks · artifact experiment briefs
The hypotheses worth testing get an experiment. Method depends on the question, A/B, qual study, prototype-and-walk-through. Speed matters; rigour more so.
04
Ship
paced by the org · artifact release plan
Release plan with rollout sequence, risk gates, and the metrics that prove it worked. Not “go live”, “move the number.”
05
Learn
always · artifact learning memo
What we hypothesized, what we measured, what we now believe. The cumulative artifact that compounds across projects.
03
Engagement shapes, descriptive, not priced.
Four shapes the work typically takes. The portfolio doesn't quote, doesn't sell packages, and doesn't claim availability. If something matches your shape of problem, we can talk it through.
Audit
2, 4 weeks
A bounded look at a funnel, journey, or product surface.
output opportunity map + risk-ranked recommendations
Sprint
4, 8 weeks
Tighter focus, deeper test. Hypothesis, experiment, decision memo.
output decision memo + shipped change
Retainer
ongoing
Embedded with a product or CX team, owning the experimentation cadence and the strategic-design layer.
output the cadence itself
Advisory
light-touch
Monthly conversations, decision support, sometimes a workshop. For teams that have the talent and want sparring.
output better calls, faster
Note on availability. I'm currently CRO & Design Lead at Europ Assistance, most engagement happens through my employer, with limited room for outside work. The honest answer: if your problem fits and the timing fits, write to me. We'll figure out the right shape from there.
04
For this to work, I need:
- Access to the people who actually use the product, in their context.
- Access to the data you already have, analytics, session replay, prior research.
- Decision rights on a small set of artifacts: what ships, what doesn't, what changes.
- One stakeholder who can unblock when the system inevitably pushes back.
- A response SLA, a week to ten days max, on questions during the engagement.
Do you sign NDAs?
Yes. Reasonable ones. The case studies on this site are NDA-cleared or non-protected work; future case studies will be too.
Remote or onsite?
Both. Brussels-based, comfortable working across European time zones. For deep work, a few days onsite at the start tends to be worth it.
Do you do “just UX”?
Rarely. UX without behavior, system, and conversion is decoration. If the brief is genuinely a UX brief, I'll either reframe it or point you to people who do that work better than I do.
Which languages do you work in?
Working competency in seven, native in French. Day-to-day across French, English, Spanish without friction.
When can you start?
Depends on the shape. Audit work has been possible alongside the day job. Sprints and retainers depend on the calendar. Best to ask.
If your problem looks like this,
let's talk it through.
No quote, no calendar, no sales cadence. A real conversation about whether and how we'd work, that's it.