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Charlie Ellington.

Work.

What I'm building and tools. I also take on a select few client projects per year.

Have something in mind? Let's talk

Main Focus

Zebra Practice

OS for accountancy work.

The operating system for accountancy practices using AI. Built inside a fifteen-person practice; opening to new practices in 2027.

Website

Working with you

Design & Build Works

Designing and building critical user journeys and AI products, validated with real users.

Book Zebra Works

Built on the design process I've used with these teams.

Ethereum FoundationConsenSysRamp NetworkNexus MutualArbitrum

Selected work

AI diligence · Shipped in code

Research Tech

From API to investor-ready in four sprints. User testing led us from chat to structured evidence views.

Research Tech AI diligence platform

Visual design · Animation

Ramp Network

Twelve motion spotlights in four days. A return to the team whose first product I designed in 2018.

Your Balance
$100.00
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Earning 4.3% APY
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Client feedback

“I’m amazed. Unbelievable. Everything was done so fast and the quality of the insights from the user validation is incredible.”
BartoszCo-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 SypniewiczCo-founder of Ramp Network
More client feedback
“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.”
MikeCo-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 TothFounder, Paid247

Smaller things

History

First Chapters · Pre-2017

2013-2017

Yoga Retreat Company

Founded and scaled a yoga retreat company to €1.5M annual revenue. Learned everything about building a business from zero.

2008-2012

Teaching Sailing

My first 'job' was teaching sailing from a beach in Greece.

1989

Ocean Kid

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