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Xenia Kadar

I turn ideas into working digital products.

I take early ideas and messy information, figure out what the product actually needs to do, and build from there.

StrideSense

A personal running-intelligence app that combines running, recovery, weather, and glucose data to explain why each run felt the way it did.

FastAPI · PostgreSQL · pgvector · Next.js · TypeScript

StrideSense run detail for a 17.5 km long run in New York: time, pace, heart rate, and temperature up top; an Insight card attributing the harder-than-planned effort to temperatures climbing from 22.6°C to an apparent 27.3°C; and a glucose chart showing 100% time in range.

Client work

A little about me

Portrait of Xenia smiling at a café table

I work across product, web development, and data, and I’m currently pursuing an MS in Emerging Technologies at NYU.

I’m interested in what happens when a lot of messy information becomes something useful. Not another dashboard full of numbers, but a product that helps someone understand what is happening, why it matters, and what to do next.

That interest grew through my work on a women’s health platform. I translated research into product requirements, helped shape symptom-tracking experiences, and structured information for an AI-powered health assistant. The challenge was not finding more information. It was making the right information clear, personal, and usable.

Now, that same thinking shapes projects like StrideSense, where I bring together data from different sources, define the logic behind the insights, and build around the questions a runner actually wants answered.

Alongside my own projects, I help small businesses turn early ideas and scattered content into clear digital products, from structure and visual direction through development and launch.

Say hello.

Whether it’s a role, a product idea, or a project that needs structure, I’d be happy to hear about it.