Hello, I'm

Zach Martens

Product Manager & Curious Tinkerer

On paternity leave, building things between naps and bottles. This is my playground for documenting what I get to explore when Zoey allows.

The Playground

Things I've tinkered with, built, or broken while on leave.

💓

HR Performance Dashboard

Interactive heart rate analysis for mountain hunting fitness. Zone breakdowns, recovery analysis, cardiac drift, peak intervals, and more.

JavaScript Chart.js Mountain Fitness
✍️

Blog

Notes from the playground. Thoughts on building, parenting, product, and whatever else ends up on the page.

Writing Reflections

More to come...

More experiments incoming. Zoey's nap schedule permitting.

About Me

I'm a product manager who spends most days thinking about user problems, roadmaps, and how to ship the right thing. Right now, though, I'm on paternity leave with my daughter Zoey, and using the downtime to get my hands dirty with tools and tech I don't normally get to touch.

This site is equal parts sandbox and journal. It's where I document the things I'm learning, building, and experimenting with while I have a rare window to just play.

Product Strategy Roadmapping User Research Data Analysis Prototyping AI Tools HTML/CSS/JS

Say Hello

Want to chat about product, tech, or parenting survival tips? Reach out.