Hi, I'm David.

I build consumer products that bring people together. I care deeply about technology and am optimistic about a future of abundance. I love meeting like-minded builders.

Just moved to San Francisco. Say hi!

Career timeline

I've been blessed to work with some talented people

2026–present
a16z · Special Projects
Building networks in San Francisco.
2022–2026
Tapestry · Founder & CEO
Founded on the thesis that new social apps needed open infrastructure to compete. Led an incredible team of 12, raised $12.5M, and built Zumi, a multiplayer AI companion that grew to 160k users. Wound down the company in 2026.
2020–2022
Union Square Ventures · Analyst
Focused on early crypto, climate, and education companies. Spent most of my time thinking about open infrastructure, where I started building the conviction that would become Tapestry.
2018–2020
Lyft · Quality Engineer
Part of the team that built Lyft's first automated testing infrastructure. Worked on the rider pickup experience as the company scaled toward its IPO. Led an experiment that never made it to production: in-app games to play while waiting for your ride. I still contend it was a great idea!
2015–2018
Snap · Quality Engineer
Early member of Snap's Stories team. Shipped products used by hundreds of millions, including Discover and Snapchat's first ad products, alongside well-intentioned experiments that didn't take off, like Group Stories.
2012–2014
NYU
Studied psychology. Dropped out, learned to code.

Writing

Serendipities in San Francisco Nov 2026
Building Cosign with the a16z New Media Team Nov 2026
5 lessons from building social AI for 160,000 users Sep 2026
Crypto’s Broadband Moment Aug 2026
Where Does Value Accrue in Pearl? Jun 2026

All writing

What 2,000 High Schoolers Taught Us About Building for the Next Generation Apr 2026
What Comes After The Creator Economy Jan 2026
TikTok, Consumer AI, and New Censorship· co-authored with Sydney Iadarola
Jan 2026
Structured Agent Memory Jul 2025
Composability is Not Just Crypto· co-authored with Nitya Subramanian
Jun 2025
Internet Capital Markets Need A Social Layer Mar 2025
Tokenized Natural Assets Apr 2021
Augmented Reality NFTs Jun 2020
Synchronous Entertainment Mar 2020

Projects

Company

TapestryOpen social graph for the next generation of apps and agentsWhitepaper Series A announcement Protocol →Solana starter kit →

Products built by Tapestry

ZumiAn embodied AI companion for Gen Z, built on the idea that persistent relationships with AI characters could meaningfully reduce loneliness. People spent 17 minutes a day with it across voice, chat, and video. Under the hood: a multi-model stack across OpenAI, Minimax, and Gemini.#zumichat →Product Hunt →Introducing Zumi 2.0 →
PrimitivesPlatform for collecting digital art and building community around on-chain objects. Artists and collectors minted 500k NFTs from their camera roll.Art show →Journal →Art Basel exhibit →
SSE, Solana Social ExplorerOpen-source trading platform for Solana memecoins and emerging tokens. Did $50M in trading volume in its first two months.GitHub →

Side projects

Side Projects

Solo projects I work on in my spare time.

BrambleA macOS desktop app that runs in the background while you work in Claude Code or Codex, capturing the full event stream — prompts, tool calls, file edits, model responses — and turning it into a structured dev log. Nothing leaves the machine unless you choose to ship something.
AI Atlas NYCA market map of New York's early-stage AI ecosystem, rebuilt nightly. An agent pipeline scrapes funding announcements, LinkedIn signals, and founder activity, re-clusters companies by category, and publishes a new version by morning.

Recent camera roll photos

a closer look