Product design for founder-led companies

First we figure out what
your product needs.
Then I design it myself.

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The gap

I work with founders at the point where design starts to matter.

The product may be live with something holding it back, or still just an idea on paper. Either way, nobody on the team truly owns design, and hiring a full-time lead feels too early.

That's the gap I fill.

The hero offer

Product Discovery Sprint.
Fixed scope, fixed price.

3 weeks · one client at a time.
The price includes one round of revisions. New requests after the sprint become a new sprint, so your scope and budget stay predictable.
WEEK 1

I dig into your product, your users, and what you already know, and we agree on what matters most.

WEEKS 2 & 3

I design that flow, end to end.

FROM
€4,500
You walk away with
A diagnosis you can act on: what's holding the product back, what to fix first, and why
That flow fully designed, every state, clickable prototype included
A ranked list of what comes next
A handoff pack: annotated Figma plus a written spec your team, or your AI tools, can build from
Book an intro call 30 minutes, no prep needed.

Other ways to work together

Projects One-off, fixed scope
Product Check
€1,500

One week, no design. A written diagnosis of what's holding your product back, what to fix first, and why. The lowest-commitment way to start.

Book a call
Landing Page Build
from €1,800

A landing page designed and built by me, end to end, on a fixed timeline.

Book a call
Design Sprint
from €3,000

Two weeks, one named flow, every state designed, clickable prototype included. For when you already know what to fix and don't need the diagnosis.

Book a call
Ongoing
Design Partner Retainer €2,500/month

For when the product is live, design questions never stop, and a full-time hire is still too early. Ongoing decisions, reviews, priorities, and the design of critical pieces. One design question at a time; anything bigger becomes a Sprint. Pause any month.

Book a call

How I work

01

You work with me directly, start to finish.

02

I use AI to move fast where it helps. The judgment and the final design are mine.

03

Based in Barcelona, working with teams across the EU.

What I don't do

01

Brand identity, logos, and visual-only work. I design how products work, not just how they look.

02

Development. I hand off designs, prototypes, and specs your team can build from. The one exception is a landing page, which I design and build myself.

03

Full-time embedded roles. That's a hire, not a practice.

Julia Slipenchuk
About

Julia Slipenchuk

Two decades designing digital products. Six of them leading design at Filmin, a streaming service in Barcelona. I've hired designers, killed features, shipped redesigns, and answered for the numbers afterwards. If you want to see past work, I'd rather walk you through the decisions on a call than send a PDF.

Let's figure out what your product needs.