Jessica Livingston

Jessica Livingston (born 1971) is an American investor, writer, and podcaster, best known as a founding partner of the seed-stage venture firm Y Combinator. ¹ She is also the author of Founders at Work: Stories of Startups' Early Days (2007), a collection of interviews with the founders of well-known technology companies. ⁵

Within Y Combinator, her co-founders nicknamed her "the Social Radar" for her ability to read people during interviews; her husband and co-founder Paul Graham has written that "Much of what's most novel about YC is due to Jessica Livingston. If you don't understand her, you don't understand YC." ²

Early life and education

Livingston was born in Minneapolis, Minnesota in 1971. Her mother left home later that year, and her father took her back to the Boston area, where she was raised in part by her grandmother. ³ She graduated from Phillips Academy in Andover, Massachusetts in 1989, ¹ and earned a Bachelor of Arts in English from Bucknell University. ¹

In her own essay "Grow the Puzzle Around You," Livingston has written candidly that she "did nothing impressive or noteworthy for the next decade" after arriving at Phillips Academy, calling those years "my own personal Dark Ages." ³

Early career

Livingston's early career was eclectic. After Bucknell she worked the late shift in customer service at Fidelity Investments, fielding calls from retail investors, then took roles in investor relations in New York, at Food & Wine magazine, an automotive consulting firm, and briefly for a wedding planner. ³ She eventually became vice president of marketing at Adams Harkness Financial Group, an investment bank in Boston. ¹

In 2003 she met Paul Graham at a party at his house in Cambridge, Massachusetts. Graham had recently sold his startup Viaweb to Yahoo and was writing essays and working on programming languages; the two began dating shortly after. ³

Founding Y Combinator

While Livingston was interviewing for a marketing job at a venture capital firm, she and Graham spent evenings discussing how broken early-stage startup funding was. As the VC firm dragged its feet, Graham one night said: "Let's just start our own." ³ The next day they recruited Graham's Viaweb co-founders Robert Morris and Trevor Blackwell to join part-time. ²

Y Combinator launched its website in March 2005, inviting applications to what it called the "Summer Founders Program." The four founders funded eight startups that summer, giving each $6,000 per founder — a figure Livingston pegged to MIT's summer stipend for graduate students. ³ The first batch included Reddit, the future founders of Twitch (then working on a different idea), and Sam Altman's geolocation startup Loopt. At the end of the summer they hosted the first Demo Day for an audience of about fifteen investors. ³

In the early days, Livingston and Graham hosted the weekly Tuesday founder dinners at their home near Cambridge, and Graham did the cooking while Livingston handled groceries, the office setup, speaker outreach, and the legal templates that founders used to incorporate their companies. ^{3 1}

The Social Radar

Livingston's most-cited contribution to Y Combinator is what her co-founders called her "social radar" — an ability to read people during interviews that effectively gave her a veto on funding decisions. During the program's first six years, Y Combinator ran a single interview track and Livingston was on every interview. ⁴ In Graham's account: "During interviews, Robert and Trevor and I would pepper the applicants with technical questions. Jessica would mostly watch... after the interview, the three of us would turn to Jessica and ask 'What does the Social Radar say?'" ²

She used the same instinct to filter out people she judged to be of bad character. As she has put it, "If I could tell someone was a conceited asshole, we didn't fund them. I'm sure we've since funded some conceited assholes, but early on I was pretty rigid about this. And I think it's the basis of the culture of our alumni community." ³ Graham has argued that this filtering, more than any technical insight, is what made the YC alumni network — now a defining feature of the program — work. ²

Culture and "mom of YC"

Livingston has described herself, only half-jokingly, as the "mom" of the Y Combinator family — a label Graham uses too. ^{4 2} She has written that culture, not the funding structure, is the half of YC that "no one else has been able to duplicate," and that her job for the program's first decade was to curate the people inside it. ⁴

Among the things Livingston and Graham did deliberately in those first years was treat founders as if they were family — knowing where everyone was from, who was eating well, who was struggling with a co-founder, who was overwhelmed. Livingston has written that they could behave this way because "we did not expect those startups to make money. ... It affected the way we acted toward the founders." ⁴

When Graham stepped down as president in 2014 and handed the role to Sam Altman, Livingston took on a more day-to-day operational role at YC, including responsibility for Startup School. ¹ In 2013 she launched the Female Founders Conference with the goal of encouraging more women to start companies. ¹ In 2016 she took a year-long sabbatical from YC. ¹

Founders at Work

In early 2007, while Y Combinator was still in its first batches, Apress published Livingston's book Founders at Work: Stories of Startups' Early Days. ⁵ It collects in-depth interviews with thirty-two technology founders, including Steve Wozniak of Apple, Max Levchin of PayPal, Sabeer Bhatia of Hotmail, Mitch Kapor of Lotus, Caterina Fake of Flickr, Joe Kraus of Excite, Joel Spolsky of Fog Creek, Paul Buchheit (who built Gmail), and her husband Paul Graham about Viaweb. ⁵ Livingston has said the book grew out of her own desire, when she was first getting interested in startups, to read more first-hand accounts of what the early days actually looked like. ³

The Social Radars podcast

In 2023, Livingston began co-hosting The Social Radars, an interview podcast with fellow Y Combinator partner Carolynn Levy in which they talk to founders of well-known startups. ¹

OpenAI

Livingston was one of the early financial backers of OpenAI, the AI research organization launched in December 2015. ¹

Personal life

Livingston married Paul Graham in 2008. ¹ They have two children. ¹ In late 2016 the family moved from the San Francisco Bay Area to the United Kingdom. ¹