Hi, I’m Timothy

I am the Product Lead for generative AI in Messenger and Instagram Direct.

Previously, I led teams that brought the privacy, safety, and security of default end-to-end encryption to the billion+ people who use Messenger.

 
 

Fun Facts

I live in San Francisco with my wife, Alyssa Guerrero.

I co-founded Nicer Studio and Fitness Totals.

I’ve read a book each week since 2016 and list them here.

I enjoy creating ceramic sculptures at our neighborhood pottery studio.

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Generative AI Work

Meta AI

Meta AI is a powerful assistant you can interact with like a person. I led the team that brought it to Messenger and Instagram Direct. It’s powered by a custom model based on Llama 2. It has access to real-time information through a search partnership with Bing, and it can also generate images for you in seconds.

Press Release Building Responsibly

AI Stickers in Messenger

AI Stickers

My team and I built the ability for you to generate fun, customized stickers for your chats in seconds in Messenger and Instagram Direct. Type in a text prompt and see how AI-generated stickers provide infinitely more options to convey how you’re feeling at any moment and express yourself in ways that are uniquely you.

Press Release Building Responsibly

AI Characters

I led the team that brought a universe of AI characters to Messenger and Instagram Direct. Each has a unique personality, mannerisms and backstory and many are played by recognizable public figures like Tom Brady, Naomi Osaka, Snoop Dogg, Kendal Jenner, MrBeast and Paris Hilton.

Press Release Building Responsibly

Privacy Work

End-to-end Encryption

Project Armadillo began with me and 3 people in a room, and after years of effort from a large team of dedicated and talented people, we brought the privacy, safety and security of default end-to-end encrypted messaging and calling to Facebook and Messenger. More than a billion people can now know that only they and the person they’re talking to have access to their personal conversations.

I’m incredibly proud of Meta for taking the time to do this responsibly, completely rearchitect the service, rebuilding 100+ features on each app, and doing all this without disrupting people’s critical ability to connect with the people they care about.

Press Release White Papers Podcast Appearance

Edit

Edit Messages

We introduced the ability to edit your messages after you’ve sent them. My team and I built this much requested feature for your personal conversations as well as your business and community chats.

Press Release

Read Receipts Controls

My team and I gave people the ability to control read receipts. If you turn them off, people won’t be able to see when you’ve read messages they send you. This can be done for all threads at once at the account level or on a per-thread basis.

Press Release

Message Delivery Controls

In concert with the introduction of cross-app communications, I led a team that gave the billions of people who use Facebook, Instagram, or Messenger control over who can reach them. This privacy settings empower you to decide whose messages reach your Chats list, your Message Request folder, or can’t message or call you at all.

Press Release

Personal Work

Fitness Totals

Fitness Totals

Managing your long-term fitness progress is difficult. Fitness Totals simplifies it by emphasizing weekly, monthly and yearly activity totals and making them available in customizable widgets. A couple of friends and I built Fitness Totals for fun, and we’ve been lucky enough to get very positive press from 9to5Mac, TechRadar, iMore, and MacStories, among others.

Download from the App Store

Decline Stickers

Decline Stickers

Alyssa Guerrero and I built an iMessage sticker pack that helps you decline with confidence. This little product ranked #1 in Art, #3 in Stickers, and #4 paid overall in the iMessage App Store. Decline was featured by Apple on several occasions.

Download from the App Store

Apple Plugs

Apple Plugs

The day Apple launched the iPhone 7 without a headphone jack, my friends and I launched Apple Plugs. It’s a parody product and gorilla marketing campaign. Adweek, The Verge, The Atlantic and 60 other publications wrote about it. We were trending on Twitter and hit the front pages of Reddit, Imgur and Product Hunt. We leveraged the buzz to launch Nicer Studio.

appleplugs.com

How I Got Here

I’m often asked to share the story of how I made it to this place in my career. My story does not follow the path of top universities and prestigious early jobs. It’s a story of creativity, perseverance, hard work, and a bit of luck.

I grew up in the Blue Ridge Mountains of North Carolina, ran a small landscaping business in high school, studied international business at a small liberal arts college, and worked as a designer and engineer to pay for my degree. After graduating in 2014, I moved to Houston to work for HP as a project manager.

Things took a difficult turn in 2016. A month after my wedding, I was laid off from HP alongside thousands of my colleagues.

We moved to South Carolina where I joined a less-than 10-person startup as its first product manager. The team and I built automation tools for enterprise customers including Microsoft and Wells Fargo.

At the same time, I co-founded a product studio called Nicer with 4 friends as a way to build our skills with a wider variety of work and make extra money. We all had other full-time jobs, but we unexpectedly saw quick growth because of a guerrilla marketing campaign that I worked on.

As the year came to a close, the automation startup hit a rough spot, and I was laid off for the second time that year. A few weeks later, 3 of the co-founders forced me and the 5th co-founder out of Nicer Studio.

My wife and I moved to San Francisco and for the next several years, I was laser-focused on personal growth, finding stability, and building legitimacy in the highly competitive technology industry.

I worked as a product manager for a small green energy finance company in Santa Rosa, commuting ~3 hours a day. After two years, I moved to another green energy finance company. This time in Oakland, commuting ~2 hours a day. In my time there I worked my way up to Head of Product for the Home Improvement business line. I will forever be grateful for the opportunities I was given to learn and grow at those two companies.

While I was learning how to be a great product manager, I was also extremely active building and shipping personal projects (Fitness Totals, Decline Stickers, etc). I blogged regularly, and I had two podcasts that turned out to be incredibly important for my career.

I started an interview podcast called UNCO as an excuse to talk with interesting people in the technology space. It worked, and I was able to interview 49 leaders from companies like Google, Amazon, Apple, Etsy, MailChimp, Khan Academy, BuzzFeed, The Verge, and Automattic. This built my network, grew my confidence, and helped me learn from a wide variety of incredibly-talented people.

In parallel, I started a show about accessibility in tech called Accessible, with my good friend, journalist, and accessibility expert, Steven Aquino. We saw success among an important group of technologists who deeply care about accessibility. One of those listeners was the Head of Accessibility at Facebook. He recommended me for a role at the company. Facebook reached out to me about it, and I ended up taking it.

I spent my first several years at Meta focused on improving user privacy. In that time I introduced powerful new privacy controls and transitioned into managing other PMs. I also started a multi-year initiative that ultimately brought the privacy, safety and security of end-to-end encrypted messaging and calling to Facebook and Messenger.

I’m now responsible for generative AI in Messenger and Instagram Direct.

Press and Appearances

My work is sometimes covered in the media. I’ve listed selected coverage below along with some of my speaking and podcast appearances. Feel free to contact me to discuss speaking opportunities.

2024

A lecture and discussion on Generative AI with MBA students
UCLA’s Anderson School of Management—February 1, 2024

Mark Zuckerberg’s new goal is creating artificial general intelligence
The Verge—January 18, 2024
@zuck, The Information, Axios, Techmeme

2023

Security Cryptography Whatever
Podcast Appearance—December 28, 2023

Living in the Future
Newsroom—December 18, 2023
Semafor

Meta starts rolling out default end-to-end encryption for Messenger
TechCrunch—December 7, 2023
Newsroom, White Papers, EFF, Bruce Schneier, Ars Technica, Techmeme

Meta AI adds Reels support and ‘reimagine,’ a way to generate new AI images in group chats, and more
TechCrunch—December 6, 2023
Newsroom, The Verge, Techmeme

Meta is putting AI chatbots everywhere
The Verge—September 27, 2023
Newsroom, BBC, Rolling Stone, Wired, FT, Techmeme

Generative AI stickers are coming to Meta’s apps
TechCrunch—September 27, 2023
Newsroom, The Verge, Techmeme

Expanding Testing for End-to-end Encryption on Messenger
Authored for Newsroom—August 22, 2023
The Verge, TechCrunch, Techmeme

AI and Education
PathCamp Conference Panel—July 18, 2023

Messenger ramps up testing of default end-to-end encryption
TechCrunch—January 23, 2023
Newsroom, The Verge, Engadget, Techmeme

2022

Meta begins testing default end-to-end encryption on Messenger
The Verge—August 11, 2022
Newsroom, TechCrunch, Techmeme

Ways You Can Take Control of Your Privacy
Newsroom—June 22, 2022

Meta’s encryption plan has human rights benefits, report says
The Washington Post—April 4, 2022
Newsroom, Wired, The Register

Meta’s Ongoing Efforts Regarding Russia’s Invasion of Ukraine
Newsroom—February 26, 2022
Techmeme

Recapping Our Privacy Efforts on Data Privacy Day
Newsroom—January 28, 2022

Updates to End-to-End Encrypted Chats on Messenger
Authored for Newsroom—January 27, 2022
TechCrunch, The Verge, Digital Trends, Techmeme

2021

Meta’s approach to safer private messaging
Newsroom—December 1, 2021
TechCrunch, AdWeek

Facebook is bringing end-to-end encryption to Messenger calls and Instagram DMs
TechCrunch—August 13, 2021
Newsroom, PC Mag, The Verge, Techmeme

Fitness Totals gets a big update with charts, improved widgets, and more
iMore—August 3, 2021
9to5Mac, TechRadar, AppAdvice

Facebook ramps up privacy efforts with end-to-end encrypted audio, video calling trials in Secret Conversations
ZDNet—June 7, 2021

Safer Internet Day
Engadget—February 9, 2021
Newsroom, Adweek, GQ Italia

TheTop.VC
Podcast Appearance—January 21, 2021

MacStories Unwind
Podcast Segment—January 8, 2021

2020

Thinking Differently
Podcast Appearance—December 21, 2020

Fitness Totals Review: Effortlessly Surface Fitness Data and Track Your Progress
MacStories—December 22, 2020

Fitness Totals Launch
9to5Mac—December 17, 2020
iMore, BirchTree, 512pixels

Facebook outlines its privacy stance now Instagram & Messenger are one
iMore—September 30, 2020
Newsroom, New York Times, TechCrunch, Techmeme

Facebook's Messenger launches new privacy features
CNET—July 22, 2020
Newsroom, TechCrunch, Engadget, Techmeme

Accessible Email Matters
Unspam Conference Talk—March 13, 2020

And You Are?
Podcast Appearance—January 20, 2020

Decline: A Sticker Pack for Saying No, Beautifully
BirchTree—January 7, 2020
MacBreak Weekly

2019

iPad Pros
Podcast Appearance—November 21, 2019

Headspace: A Guided-Meditation Companion
Authored for TidBITS—October 14, 2019

Sip: Smart Color Management for Your Mac
Authored for TidBITS—August 6, 2019

Terminology: Where Word Explorations Begin
Authored for TidBITS—June 27, 2019

Clip sharing with Overcast
Marco.org—April 27, 2019

2018

The Outpost Show
Podcast Appearance—September 03, 2018

Apple’s Sarah Herrlinger talks accessibility in new podcast interview
9to5Mac—June 11, 2018
The Talk Show

BYOD Podcast
Podcast Appearance—May 02, 2018

2017

You Don’t Hear So Much About the iPhone 7 Headphone Jack Anymore
Daring Fireball—February 1, 2017

2016

Greenville "stickers" now available on iPhone
Greenville News—September 16, 2016

The Apple Plug is today’s perfect iPhone parody
The Verge—September 8, 2016
AdWeek, Mashable, The Atlantic