Featured · In Development
15th Club
Golf is full of data, ritual, and decision-making — and almost none of it has been meaningfully touched by AI. Most golf apps are just digital scorecards.
2025AIFounder & Builder
Visit 15th.club →Four holes in one.
Selected work & experiments
Spaceman
Independent design and engineering work doesn't always fit neatly inside a company. Some of the best work happens at the edges — between studios, between disciplines, between what a client thinks they need and what they actually need.
2018FounderFounder
FishSticks
Kids struggle to practice spelling lists from school — the tools that exist are either boring, require a parent to quiz them, or don't work with the actual word lists teachers send home.
2025Founder & BuilderSaaS
dougmar.ch
A portfolio argues that you can design and build things, then sits unchanged for years, which quietly undercuts the argument. The decisions behind it are invisible, the process is hidden, and none of it is falsifiable.
2026Designer & BuilderAI
TeeTurn
A mobile-first cross-platform golf app that lets players track the progress of a round in real-time. Responsible for product direction and strategy.
2020Experiment
Politweets
Built over a weekend with the Character140 collective — a group of DC-area developers and designers. Politweets scraped Twitter's public timeline for presidential candidate mentions and displayed them in real time, homepage styled like a digital newspaper. Went live just before the New Hampshire primaries. Covered by HuffPost, Mashable, ZDNet, and ReadWriteWeb. Six to nine months later, Twitter shipped their own version at election.twitter.com.
2008Experiment
Twittertale
One of the earliest experiments using the Twitter API to track keywords across the public timeline — built with Jason Garber and the Character140 crew initially just to entertain friends. Twittertale scanned every public tweet for swear words and ranked which users had the biggest potty mouth. Covered by Mashable. The same keyword-tracking mechanic became the foundation for Politweets a few weeks later.
2008Experiment
The scorecard is the first experiment.
Trajectory
- 2025 to presentVice President, iCapital
- 2022 to 2025Senior Engineer, Parallel MarketsAcquired by iCapital, Jan 2025
- 2020 to 2022Senior Engineer, Mandiant
- 2018 to presentFounder, Spaceman LLC
- 2018Senior Engineer, The Atlantic
Capabilities
- Product Design
- Design Systems
- Component Libraries
- Prototyping
- Brand & Identity
- Accessibility (WCAG, Section 508)
- React
- TypeScript
- JavaScript
- GraphQL
- PandaCSS
- Radix
- SCSS
- Ruby on Rails
- Elixir / Phoenix
- Webpack
- AML/KYC & Identity Verification
- Threat Intelligence
- Healthcare
- Mentoring
- Technical Leadership
- AI-Assisted Workflows (Claude Code)