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David Lieb: How I Founded Google Photos & Bump; Why I Left Google | 20VC #927

David Lieb is one of the product OGs of the last decade. As the founder of Bump, David pioneered how over 150M users shared data, contacts and more before the company was acquired by Google. At Google, David took this one step further by creating Google Photos, which he has led with immense success for the last 9 years. In the last few weeks, David announced his latest move, to join Y Combinator, one of the world’s leading accelerators as a Partner. If that was not enough, David also has a stellar angel portfolio with the likes of Rippling, Flexport, Tally, Maven and many more. ------------------------------------- Timestamps: 00:00 How did you come to lead Google Photos? 02:16 Lessons from founding Bump 03:30 Advice to founders on letting go 04:35 When do you know you have product-market fit? 06:22 Why did you sell Bump? 08:11 What made Google Photos a success? 10:40 Why did you decide to leave Google? 13:15 Is product more art than science? 17:05 Can you trust your gut? 18:40 How Google Photos instilled trust 20:50 How to listen to customer feedback 23:35 Data vs feedback 24:45 Cohort retention curve 26:48 What are good retention numbers? 34:05 How do you create a culture of product obsession? 36:35 How do you hire your product team? 39:15 When do you bring in a CPO? 46:43 Difference between good and great PMs 49:44 Product reviews 52:18 How to make employees comfortable to speak? 55:28 Where do people go wrong with product reviews? 58:08 How has angel investing changed your thinking? 1:01:25 How to judge founders that are technical? 1:03:24 Did you really get fired from Google twice? 1:05:15 Do you still have a chip on your shoulder? 1:06:19 Which product leader do you most admire? 1:06:46 Advice for new product leader 1:07:08 What would you like to change about the world of product? 1:07:43 Most impressive recent product strategy ------------------------------------- In Today’s Episode with David Lieb We Discuss: 1.) Entry into Product: How did an idea at business school turn into Bump and ultimately the creation of Google Photos? What are the single biggest mistakes David made with the early Bump product? What does David know now that he wishes he had known at the start of Bump? 2.) Scaling the Team Alongside the Product: What is product-market-fit to David? What is it not? What are the single biggest mistakes founders make when they think they have it? What should founders do first and most importantly, when they do have it? Why does David believe individual user data is more important than relying on data? 3.) Product: Art or Science: Why does the description we have for product managers need to change? How does David determine when to act on customer feedback vs stick to the current product plan? What is the right way to do customer discovery? What questions are best to ask? Where do founders make the biggest mistakes in customer discovery? Ultimately, is product more art or science? Is this changing with ever-increasing data? 4.) Product: The Process: How does David conduct product reviews? What are the biggest mistakes founders and product leaders make when managing product reviews? Who is invited? Who sets the agenda? Who determines who is accountable for what? How do product reviews change in a world of Zoom? What is better? What is worse? What can product leaders do to build culture in remote worlds? How can product leaders make everyone feel safe and comfortable to share how they feel, regardless of seniority, in product reviews? ------------------------------------- #DavidLieb #20product #ycombinator #googlephotos #bumptechnologies #productleader #productgrowth #harrystebbings

Harry StebbingshostDavid Liebguest
Sep 20, 20221h 8mWatch on YouTube ↗

At a glance

WHAT IT’S REALLY ABOUT

From Bump to Google Photos: David Lieb’s Playbook for Product Mastery

  1. David Lieb recounts his journey from engineer and accidental founder of Bump to leading Google Photos for nearly a decade, then leaving Google after surviving leukemia to join Y Combinator. He explains how Bump’s failure to find a business model and its acquisition by Google led to the insight behind Google Photos: everyone would soon drown in unorganized mobile photos. Lieb dives deep into his product philosophy—why product is more art than science, how to truly understand users, and why founder and PM gut instinct is a powerful ‘machine learning model’ rather than something to dismiss. He also covers how to hire and structure product teams, run effective product reviews, recognize real product‑market fit, and avoid common scaling mistakes in both startups and big companies.

IDEAS WORTH REMEMBERING

5 ideas

True product–market fit is unmistakable and all‑consuming.

If you’re unsure whether you have product–market fit, you don’t; when you do, demand is so strong that your time is overwhelmed by keeping systems up and satisfying eager customers, not searching for users.

Define a narrow, explicit mission—and be equally clear on what you will not do.

Google Photos succeeded by committing to being “the home for the world’s memories” and explicitly not building a social network or heavy editing tool; this mission filtered who joined, who left, and which features shipped.

Use your gut as a trained model, not a random hunch.

Lieb argues your gut is “the world’s most sophisticated ML model,” trained on years of experience; you should aggressively feed it with user research, experiments, and data, then trust it for big product calls and creative bets.

Cohort retention curves beat vanity metrics for understanding real usage.

Founders should obsess over whether cohorts flatten—showing a stable, recurring user base—rather than just MAUs or installs, and must beware misleading signals like accidental sessions or poorly qualified signups.

Founders usually delegate product and sales too early.

The founder should own core customer interaction and product decisions longer than feels comfortable, only hiring senior product or sales leaders once they are absolutely bottlenecked and the work remains mission‑critical.

WORDS WORTH SAVING

5 quotes

If you don't know if you've got product–market fit or not, you don't.

— David Lieb

Your gut is the world's most sophisticated machine learning model ever created.

— David Lieb

Magic happens when you bring all that stuff together in a very small number of people's heads.

— David Lieb

I just really wanted Google Photos to exist.

— David Lieb

Obsession is a form of love, and love is very hard to fake.

— David Lieb

Founding Bump and the origin story of Google PhotosDefining and recognizing true product–market fit (and losing it)Mission-setting, product vision, and ‘ownership mentality’Art vs. science in product management and using gut instinctRetention, cohorts, and how to correctly use product dataHiring, structuring, and scaling high-caliber product teamsRunning effective product reviews and fostering product cultureLeaving Google, health scare, and transition to YC investing

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