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How Netflix builds a culture of excellence | Elizabeth Stone (CTO)

Elizabeth Stone is the chief technology officer of Netflix. She previously served as vice president of product data science and engineering, and as vice president of data and insights, at Netflix. Before Netflix, Elizabeth was vice president of science at Lyft, chief operating officer at Nuna, a trader at Merrill Lynch, and an economist at Analysis Group. In our conversation, we discuss: • Elizabeth’s advice for career advancement • Netflix’s unique high-performance culture • How, and why, Netflix maintains a high bar for excellence • Intentional leadership practices • How to foster an “open door” culture within your team • The Keeper Test and how it contributes to maintaining a high bar for excellence • The power of transparent communication • Much more — Brought to you by: • Vanta—Automate compliance. Simplify security: https://vanta.com/lenny • Sendbird—The (all-in-one) communications API platform for mobile apps: https://sendbird.com/lenny • Explo—Embed customer-facing analytics in your product: http://explo.co/lenny Find the full transcript at: https://www.lennyspodcast.com/how-netflix-builds-a-culture-of-excellence-elizabeth-stone-cto/ Where to find Elizabeth Stone: • LinkedIn: https://www.linkedin.com/in/elizabeth-stone-608a754/ Where to find Lenny: • Newsletter: https://www.lennysnewsletter.com • X: https://twitter.com/lennysan • LinkedIn: https://www.linkedin.com/in/lennyrachitsky/ In this episode, we cover: (00:00) Elizabeth’s background (04:36) Life as CTO vs. VP of Data (05:57) The role of economists in tech companies (08:32) Using economics to understand incentives (10:07) Success and career growth (20:15) Setting expectations (25:02) Advice for how to avoid burnout (27:44) Netflix culture: high talent density (30:31) Netflix culture: candor and directness (31:45) The Keeper Test (39:01) Maintaining a high bar for excellence (43:54) Netflix culture: freedom and responsibility (46:18) Unconventional processes at Netflix (47:55) Examples of candor (51:44) Data and insights team structure (01:00:12) Staying close to teams (01:02:31) Advice on being present (01:07:40) Lightning round Referenced: • What to Know About the Netflix Cup, Today’s First-Ever Live Sports Event: https://www.netflix.com/tudum/articles/netflix-cup-live-event-date-news • Ann Miura Ko interview | The Tim Ferriss Show (Podcast): https://www.youtube.com/watch?v=h2GO0Ks_VGg • Netflix culture: https://jobs.netflix.com/culture • No Rules Rules: Netflix and the Culture of Reinvention: https://www.amazon.com/No-Rules-Netflix-Culture-Reinvention/dp/1984877860 • Reed Hastings on LinkedIn: https://www.linkedin.com/in/reedhastings/ • Netflix’s “Keeper Test” and Why You Need It | Lorne Rubis: https://www.highlights.lornerubis.com/2015/08/the-netflix-keeper-test-and-the-courage-to-take-it/ • The Hunger Games: https://en.wikipedia.org/wiki/The_Hunger_Games • Nan Yu on LinkedIn: https://www.linkedin.com/in/thenanyu/ • Work Life Philosophy: https://jobs.netflix.com/work-life-philosophy • The Scoop: Netflix’s historic introduction of levels for software engineers: https://blog.pragmaticengineer.com/netflix-levels/ • Chaos Monkey: https://www.techtarget.com/whatis/definition/Chaos-Monkey • Ali Rauh on LinkedIn: https://www.linkedin.com/in/ali-rauh/ • Keith Henwood on LinkedIn: https://www.linkedin.com/in/keith-henwood/ • Jeff Bezos’ Morning Routine of Puttering Around—How It Works: https://medium.com/illumination/jeff-bezos-morning-routine-of-puttering-around-how-it-works-9d73f359ac8d • What I Talk About When I Talk About Running: A Memoir: https://www.amazon.com/What-Talk-About-When-Running/dp/0307389839 • A Fine Balance: https://www.amazon.com/Fine-Balance-Rohinton-Mistry/dp/140003065X • Triangle of Sadness on Hulu: https://www.hulu.com/movie/triangle-of-sadness-f60937bd-45f4-469a-938f-db95026953a1 • Beef on Netflix: https://www.netflix.com/title/81447461 • Fellow pour-over coffee set: https://fellowproducts.com/products/stagg-xf-pour-over-set • Peloton bikes: https://www.onepeloton.com/shop/bike Production and marketing by https://penname.co/. For inquiries about sponsoring the podcast, email podcast@lennyrachitsky.com. Lenny may be an investor in the companies discussed.

Elizabeth StoneguestLenny Rachitskyhost
Feb 21, 20241h 13mWatch on YouTube ↗

At a glance

WHAT IT’S REALLY ABOUT

Inside Netflix: Talent Density, Radical Candor, And Data-Driven Excellence

  1. Elizabeth Stone, Netflix’s CTO and a trained economist, explains how Netflix’s culture is built on unusually high talent density, radical candor, and broad freedom paired with responsibility. She connects her economics background to leadership, especially in understanding incentives, unintended consequences, and simplifying complex problems. The discussion details how Netflix maintains a high performance bar (e.g., the keeper test, no traditional performance reviews), and how this enables minimal process and maximum autonomy. Elizabeth also describes Netflix’s centralized Data & Insights org, her personal leadership practices (presence, feedback, context-sharing), and what endurance sports have taught her about resilience and excellence.

IDEAS WORTH REMEMBERING

5 ideas

High talent density is the prerequisite for Netflix’s entire culture.

Netflix can only sustain radical candor, minimal process, and broad autonomy because it insists on hiring and retaining people who not only perform at a very high level but also raise the bar for the entire team.

The “keeper test” operationalizes a high performance bar without formal reviews.

Managers regularly ask themselves if they would fight to keep each person; if the honest answer is no, they initiate difficult but direct conversations about role fit or leaving Netflix, enabled by continuous feedback rather than annual performance ratings.

Excellence is about standards and follow-through, not endless hours.

Elizabeth defines dedication as holding herself to a very high standard—being responsive, following through, and delivering world-class work—without glorifying long hours or burnout, and expects the same mindset from her teams.

Effective leaders set expectations, give precise feedback, and then help close the gap.

Her coaching model is: clearly state the bar, give specific examples of where work falls short, and then actively roll up her sleeves (e.g., editing a doc together) so people understand and can internalize what ‘great’ looks like.

A centralized, cross-functional data and research org boosts objectivity and innovation.

By keeping data engineering, data science, analytics, and Consumer Insights together in one org that serves nearly all parts of Netflix, the team develops deep functional excellence, cross-pollinates ideas, and can act as an independent, truth-telling partner rather than simply validating stakeholders’ narratives.

WORDS WORTH SAVING

5 quotes

We can't really have any of the other aspects of the culture, including candor, learning, seeking excellence and improvement, freedom and responsibility, if you don't start with high talent density.

Elizabeth Stone

In order to keep that bar high, you have to be willing to have those types of very uncomfortable conversations. It's an uncomfortable amount of candor.

Elizabeth Stone

If this person came to me and said, ‘I'm leaving,’ would I do everything I could to keep them? If not, then I should be having that tough conversation about whether they should really be here.

Elizabeth Stone

It's really not about long working hours. It's more about how much I care about excellence.

Elizabeth Stone

Our job is not to tell the story that someone wants to hear with the data. It's for us to have our own perspective about things.

Elizabeth Stone

Netflix’s culture: high talent density, radical candor, freedom and responsibilityThe “keeper test” and how Netflix manages performance without formal reviewsEconomics as a foundation for tech leadership and decision-makingElizabeth Stone’s career progression and personal ‘secret sauce’ for rapid growthNetflix’s centralized Data & Insights and Consumer Insights org structureLeadership practices: setting a high bar, specific feedback, and context sharingPersonal habits, resilience, and lessons from cycling and triathlons

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