Hi, I'm Timothy
I'm a Product Director at Meta building AI-native consumer products at billion-user scale.
GenAI in Messenger & Facebook
I lead AI product for Messenger and the social surfaces of Facebook—Profile, Creation, Friends Tab, etc. We work with researchers in TBD Labs and have our own full stack team that post trains, evals, and hill climbs our models. The challenge is building AI that feels natural in the most personal spaces people use every day—not bolted on, but something genuinely useful in context. We productionize these into consumer features used by hundreds of millions of people.
GenAI in Instagram
I previously led the effort to bring Meta AI to Instagram, introducing generative AI capabilities to one of the world's most popular platforms. We shipped Meta AI chat and voice, writing tools, image creation and editing, AI stickers, and AI themes—used by hundreds of millions of people. The work required rethinking how AI integrates into a visual, creative platform where people don't think of themselves as “AI users.”
End-to-end Encryption
Project Armadillo began with me and 3 other people in a room. After rebuilding hundreds of features top to bottom, more than a billion people can now know that only they and the person they're talking to can access their personal messages and calls.
Privacy Features
I led teams that shipped privacy features now available to several billion people across Instagram, Messenger, and Facebook. These include app lock, the ability to edit sent messages, and the option to turn off read receipts. We also built Message Delivery Controls across all three apps, empowering people to decide whose messages reach their Chats list, their Message Request folder, or are blocked entirely.
Before Meta
I helped pay for college working as a self-taught engineer. I then worked at HP, two startups, and a product studio I co-founded that still runs today—nicer.com.
Fun Facts
I live in San Francisco with Alyssa Guerrero.
Sometimes you'll find me helping Alyssa with Frenzy Faire, her retail store of handcrafted and vintage goods in North Beach.
I've read a book each week for over a decade and keep a list here.