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Bret Taylor’s Sierra raises $350M at a $10B valuation

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Netflix, ElevenLabs, Wayve, Sequoia Capital — just a few of the heavy hitters joining the Disrupt 2025 agenda. They’re here to deliver the insights that fuel startup growth and sharpen your edge. Don’t miss the 20th anniversary of TechCrunch Disrupt, and a chance to learn from the top voices in tech — grab your ticket now and save up to $675 before prices rise.

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Bret Taylor’s Sierra raises $350M at a $10B valuation Rebecca Szkutak PM PDT · September 4, 2025 Investors are clearly bullish about former Salesforce co-CEO Bret Taylor’s AI agent startup Sierra.

Sierra, which helps enterprises build customer service AI agents, announced it raised a $350 million funding round on Thursday. The round, led

Sierra was founded in early 2024

Sierra has now raised $635 million altogether, including a $110 million that closed in February of last year led

Others of its investors include ICONIQ and Thrive Capital.

As TechCrunch has previously reported, Taylor and Bavor have a long history in customer service tech. Taylor spent nearly a decade at Salesforce and years ago founded Quip, which Salesforce bought for $750 million in the summer of 2016. Bavor managed Gmail and Google Drive at Google, among other consumer-facing products.

Taylor met Bavor while at Google, where he worked before serving as Facebook’s CTO for several years. At Google, Taylor is widely credited with helping to launch Google Maps. Years later, he’d oversee the Twitter board throughout the social media site’s takeover

Techcrunch event Tech and VC heavyweights join the Disrupt 2025 agenda Netflix, ElevenLabs, Wayve, Sequoia Capital, Elad Gil — just a few of the heavy hitters joining the Disrupt 2025 agenda. They’re here to deliver the insights that fuel startup growth and sharpen your edge. Don’t miss the 20th anniversary of TechCrunch Disrupt, and a chance to learn from the top voices in tech — grab your ticket now and save up to $600+ before prices rise. Tech and VC heavyweights join the Disrupt 2025 agenda Netflix, ElevenLabs, Wayve, Sequoia Capital — just a few of the heavy hitters joining the Disrupt 2025 agenda. They’re here to deliver the insights that fuel startup growth and sharpen your edge. Don’t miss the 20th anniversary of TechCrunch Disrupt, and a chance to learn from the top voices in tech — grab your ticket now and save up to $675 before prices rise. San Francisco | October 27-29, 2025 REGISTER NOW Earlier this week, in fact, Taylor announced that Sierra is launching its second year of its so-called APX program, a rotational opportunity for recent technical graduates that directly mirrors the Google program that launched both Taylor’s and co-founder Clay Bavor’s careers two decades ago.

The hiring announcement stands out in what has become an increasingly tough job market, particularly as companies assess the power of AI technologies like those Sierra is selling and their potential impact on workforce needs.

The program targets computer science graduates and says it offers experience in both agent engineering and product management. Taylor described the roles as providing what he calls “an irresponsible amount of responsibility” — similar to the freedom to build and launch products that he and Bavor had at Google — with new graduates expected to work on multiple product launches during their first year.

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Rebecca Szkutak Senior

Becca is a senior

You can contact or verify outreach from Becca View Bio October 27-29, 2025 San Francisco Put your brand in front of 10,000+ tech and VC leaders across all three days of Disrupt 2025. Amplify your reach, spark real connections, and lead the innovation charge. Secure your exhibit space before your competitor does.Last day to book is September 5

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