About

Hi, I'm Thelxi.

I'm a senior product designer in Stockholm. At Miro I lead design for Messaging, helping teams stay in the loop as they collaborate. Before that I led Prototyping, where ideas become AI-generated prototypes on the canvas. I like turning complicated systems into products that feel simple.

I trained as a computer engineer, then did a doctorate in user-system interaction. Since 2010 I've designed for healthcare, e-commerce, SaaS, developer and productivity tools, and now AI products.

These days my work is about AI and collaboration. I'm at my best when the problem is still fuzzy: finding the real question, setting the product strategy, and staying hands-on until it ships, with an eye for craft and the small details.

Say helloLinkedIn

Portrait of Thelxi Mamagkaki

What I bring

Strategy and craft

I set product direction, then stay in the details until it ships.

Hard domains

Developer tools, machine learning, recruiting, healthcare: I enjoy learning a field fast and asking the dumb questions early.

Team glue

I work closely with PMs, engineers and researchers, and I've led and grown design teams.

Experience

Jun 2024 – nowSenior Product DesignerMiro

Lead design for Messaging, helping teams stay in the loop and collaborate around their ideas. Previously led Prototyping, taking AI-generated prototypes on the canvas from 0 to 1.

Jan 2024 – Dec 2025Lead UX/Product DesignerUizard (acquired by Miro in 2024)

Led product design and a team of 3 designers for the AI design and prototyping tool Miro acquired in 2024, including the launch of Autodesigner 2.0 in June 2024.

May 2023 – Oct 2023Principal Product DesignerClerk

Designed developer tools for authentication and user management, delivered as drop-in components and APIs, including organizations and auto-join.

Feb 2016 – Dec 2021Senior UI Designer, then Principal Product DesignerWorkable

Owned product design for candidate experience and sourcing in an applicant tracking system, and headed a team of 3 senior designers. Job Board: +60% conversion, 30x more candidates. Careers Pages: activation 15% to 22%, now part of every plan.

Mar 2013 – Feb 2015Interaction and UX DesignerScandinavian Airlines

Designed web, mobile apps, airport check-in kiosks and inflight entertainment.

Education

Outside work

I'm a mother of two, so free time is more of a rumour. When it does show up, I sketch, crochet, knit (a chronic newbie, but an enthusiastic one) and, lately, get clay under my fingernails doing ceramics. I also buy books faster than I read them: Olive Kitteridge is my latest love, Murakami's Hard-Boiled Wonderland the all-timer.