About

Hi, I'm Thelxi.

I'm a product designer at Miro, where 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: at Miro I've worked on how people prototype and build ideas with AI, and now on how they talk to each other around them. I'm at my best when the problem is still fuzzy: finding the real question, setting the product strategy, and then staying hands-on until it ships, caring about craft and the small details along the way.

Say helloLinkedIn

Portrait of Thelxi Mamagkaki

What I bring

Strategy and craft

From the product vision to the last pixel. I can set direction and still sit in the details.

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 teams of senior designers.

Experience

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.

2024 – 2025Lead UX/Product DesignerUizard by Miro Labs

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

2023Principal Product DesignerClerk

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

2016 – 2021Senior UI Designer, then Principal Product DesignerWorkable

Owned product design for candidate experience and sourcing in an applicant tracking system (Job Board, Careers Pages, Referrals, People Search), and headed a team of senior designers.

2017 – 2018Designer (side project)Kenza

Designed continuous integration for machine learning, from research and flows to UI and branding. 3rd place at the Product Hunt Global Hackathon.

2013 – 2015Interaction and UX DesignerScandinavian Airlines

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

Education

Outside work

Sketching, sewing, being a chronic newbie at knitting, buying books faster than I read them (Olive Kitteridge is my latest love; Murakami's Hard-Boiled Wonderland is the all-timer), and lately, Lego.