I help founders and product leaders ship with more clarity and less rework. Research, experiments, and delivery support, scoped to the decision you need to make next. Based in Madrid, working worldwide.
I help founders and product leaders make better product decisions under constraints—so teams ship coherently and can measure what changed.
I work end-to-end across B2C growth and B2B SaaS, including operations-heavy platforms and public-sector constraints—Privacy, Secure & Accessible by Design.
Every engagement follows the same loop: evidence → trade-offs → prototype → ship with instrumentation → iterate.
A focused engagement with a defined output: a clarity sprint, an audit, or an experiment framework. Best when you need a clear answer fast.
End-to-end design and delivery support for a defined scope: a new feature, a redesign, or a v1 launch. Includes research, prototyping, specs, and iteration after release.
Lightweight, ongoing support: design reviews, decision check-ins, and strategic input on a regular cadence. Best for teams with internal design capacity.
I work directly with engineers—reviewing PRs, pairing on edge cases, and writing specs they can build from. Design is only useful if it ships, so I stay close to implementation.
Yes, when it accelerates learning. I build working prototypes, front-end components, and CLI tools to validate flows before committing engineering time. I also contribute to design system code.
I work under NDA regularly. Case studies on this site are published with explicit client permission; confidential work is described without naming the client.
Depends on the engagement: activation, conversion, retention, task completion time, error rates, escalation frequency, time-to-first-success (for developer tools). I define the metric at the start and instrument it before release.
Madrid, Spain. I work remotely with teams across Europe, and I'm available for on-site workshops when needed.
Describe your constraints and the decision you need to make. I'll tell you if I can help.