I lead product and design for complex products and growing teams: finding what matters, building it well, and learning from what ships. More at mandiobrien.com.

Recently I've extended that into hands-on product building, taking working software from idea to production for real communities and occasions in my life. I set the product direction, design the experience, write the specs, make the product and technical tradeoffs, and test, debug and decide what ships. I use AI coding agents as implementation partners; they write most of the code.

Turns a restaurant receipt into a fair, itemized tab for everyone at the table, with no app or account for guests. Built for the dinners I host with Amuse-Bouche, a Denver food collective. tabsplits.com · repo

Three curated Denver event feeds, one each for indie music, food, and arts and sciences, serving the Meetup communities I organize. AI drafts listings; a person reviews every one before it publishes. Setlist Social Feed · Amuse-Bouche Insider · Artistry/Nerdistry Live · repo

A party app for one real Fat Bear Week watch party: invites, RSVPs, a potluck sheet and a bear field guide, then a live bracket game played on phones and the TV. Built for about 20 friends and one deadline; now a read-only archive of the night. fatbear.sprigbo.com · repo

Each repo's README covers the problem, the key decisions and tradeoffs, and how it was built.