Zebra Design Sprint Docs
The full sprint methodology, documented and open. How we validate critical user journeys in code, not Figma.


“I’m amazed. Unbelievable. Everything was done so fast and the quality of the insights from the user validation is incredible.”
— Bartosz, Co-founder, Research Tech

“Shortest design cycle available on the market. Charlie is a master of communication, so working with him is not only very effective, but also a real pleasure.”
— Szymon Sypniewicz, Co-founder of Ramp Network

“In a mere two weeks, they took a high-level concept and turned it into a visually stunning leaderboard app that delights our users. As a small, highly technical team, we found that because they were able to own all the design, UI/UX and front-end engineering related to the project, it allowed us to concentrate on back-end and data engineering, where our strengths lie.”
— Mike, Co-founder, Hummingbot

“We found Charlie by searching for the Ramp designer — we needed someone who actually understood fintech UX. His user testing caught what we never would have: users freezing on the first screen, not understanding why verification was needed. Insights that would have killed adoption. He delivered it all in production-ready code we could integrate directly — no Figma translation, no months of back-and-forth. His work was instrumental to securing our next round of funding.”
— Philipp Toth, Founder, Paid247
I run a product studio building tools. I take on select client sprints to fund it — typically one to four week UX and product design engagements shipped in code. Browse the client case studies. 2026 availability. Below is everything else: personal projects, apps I'm building, and a few stories from along the way.
The full sprint methodology, documented and open. How we validate critical user journeys in code, not Figma.

I built an AI user experience tool that interviews your users while you sleep.

AI-powered design workflow agents that ship production code. Open source tools for the design engineering era.
export const agent = {
name: 'design-agents',
type: 'design-engineer',
ships: true,
}
AI agents that generate production-ready Framer Motion animations. Turning design intent into shipped code.
export const agent = {
name: 'motion-agents',
type: 'design-engineer',
ships: true,
}
Built a gift list app for my daughter's birth. Full-stack Next.js, designed and shipped in a weekend.

A personal project exploring Internal Family Systems therapy through thoughtful UX design.
.png&w=3840&q=75)
Sunrise surfs, values reset, and the space to figure out what actually matters. A year that changed everything.

Hand-built a campervan and lived off-grid for months. Solar panels, composting toilet, complete freedom.

Converted a sailing yacht to electric propulsion. Batteries, motor controllers, and a lot of fibreglass.

Co-founded Deep Work Studio. The UX behind Web3's most important launches, including Ethereum's staking platform.
Designed Ramp's first product from zero to launch. Fiat-to-crypto onramp used by millions.

Designed one of the first DeFi products. Decentralised insurance on Ethereum, from concept to shipped UI.
Founded and scaled a yoga retreat company to €1.5M annual revenue. Learned everything about building a business from zero.

Created a media agency whilst at university in 2011. Clients included Danone and Evian and more fun ones like mountain bike events.
My first 'job' was teaching sailing from a beach in Greece.

On the ocean since I was eight, sailing, windsurfing, kitesurfing and later surfing.
