Portrait of Raphael Diftopoulos, Senior Product Designer

I’m Raphael! 👋

A Senior Product Designer with 9+ years turning complex, data-heavy workflows into simple products teams actually adopt.


Proven impact across 90POE and Workable, including 400% adoption growth, 200% engagement growth, 3× faster uploads, and 30–40% workflow efficiency gains.


Now at Levellr, building a product that gives fans a real say in the products they love. I design how their voices reach the teams who make those products, in a way they can act on.

BACKGROUND

I started in economics, realised design was what I loved, and moved from graphic design at Stream Team in Thessaloniki into UI/UX at Mind-Alliance. Since then I’ve worked on products where the complexity is the point: voyage estimation at 90POE, the core hiring workflow at Workable, and grocery delivery for Saudi Arabia at Mart.

I started in economics, realised design was what I loved, and moved from graphic design at Stream Team in Thessaloniki into UI/UX at Mind-Alliance. Since then I’ve worked on products where the complexity is the point: voyage estimation at 90POE, the core hiring workflow at Workable, and grocery delivery for Saudi Arabia at Mart.

WHAT I DO

I’ve built or led design systems at Workable, 90POE, Mart and Levellr, managed designers at Mart and 90POE, and run 32 mentoring sessions in 10 countries on ADPList. Lately I’ve moved prototyping from Figma to AI, making design systems readable by AI so Claude Code can generate realistic, on-brand prototypes in hours, not weeks.

I’ve built or led design systems at Workable, 90POE, Mart and Levellr, managed designers at Mart and 90POE, and run 32 mentoring sessions in 10 countries on ADPList. Lately I’ve moved prototyping from Figma to AI, making design systems readable by AI so Claude Code can generate realistic, on-brand prototypes in hours, not weeks.

NOW

I’m currently completing a BA (Hons) in Graphic Design at AKTO, in partnership with Middlesex University. I design for adoption, not aesthetics: clarity, accessibility and long-term impact.

I’m currently completing a BA (Hons) in Graphic Design at AKTO, in partnership with Middlesex University. I design for adoption, not aesthetics: clarity, accessibility and long-term impact.

MY DESIGN PHILOSOPHY

Three principles behind my work

Design for adoption, not aesthetics

A design is only done when people choose it over their old workaround. At 90POE that meant replacing Excel-based voyage estimation with a tool that grew adoption by 400%.

Design for adoption, not aesthetics

A design is only done when people choose it over their old workaround. At 90POE that meant replacing Excel-based voyage estimation with a tool that grew adoption by 400%.

Systems over screens

I build the foundations teams scale on: tokens, components and clear documentation. I’ve built or led design systems at Workable, 90POE, Mart and Levellr.

Systems over screens

I build the foundations teams scale on: tokens, components and clear documentation. I’ve built or led design systems at Workable, 90POE, Mart and Levellr.

Prototype with AI, validate with people

I make design systems readable by AI, so Claude Code can generate realistic, on-brand prototypes in hours. Then I test them with real users before anything ships.

Prototype with AI, validate with people

I make design systems readable by AI, so Claude Code can generate realistic, on-brand prototypes in hours. Then I test them with real users before anything ships.

CASE STUDIES

Selected work