Bijan Sabet - U.S. Ambassador, Spark Capital co-founder
YesPress Profile

Bijan Sabet

The man who drove a hatchback to California, bet the internet on strangers, and then repped America in Prague. He shoots film. He means it.

Venture Capital Diplomat Photographer Spark Capital First-Gen American
17+
Years at Spark
11
Twitter employees when he invested
10th
U.S. Ambassador, Czech Republic
Venture capitalist. Diplomat. Film photographer. The first-generation American who built one of Boston's great VC firms - then took a call from the White House.
Spark Capital Co-Founder & Partner Emeritus - Former U.S. Ambassador to Czech Republic

The Hatchback Drive That Started Everything

His parents never planned on meeting. His father came from Iran. His mother from Korea. Both landed in New York in the 1960s, both ended up at the same medical school, and both became U.S. citizens as soon as the law allowed. The kitchen table conversations in the Sabet household weren't about grades or sports. They were about freedom and democracy - what those words actually mean when you've watched regimes crumble and borders close.

Bijan Sabet graduated from Boston College in 1991, accounting and computer science on the transcript, something else entirely in his gut. Then Macworld happened. He walked through that conference and saw the future arranged in demo booths and developer badges. So he drove - literally, in a hatchback, from Boston to Silicon Valley - because that's where the thing was being built and he intended to be part of it.

He spent the next decade in San Francisco helping build the consumer internet. WebTV Networks, one of the earliest bets on connecting television to the web, was where he cut his teeth as a senior executive. Microsoft bought the company in 1997 for $425 million. Not bad for a first act. But Sabet wasn't done - he co-founded Moxi Digital, then made the counterintuitive move back to Boston to join Charles River Ventures as an Entrepreneur-in-Residence.

"I decided that the only way of doing something is by investing in things I was passionate about, things that I know something about."

That's where he met Santo Politi. In 2005, the two - along with Todd Dagres and Paul Conway - founded Spark Capital with a deceptively simple premise: do things differently. No enormous funds chasing consensus. No boardroom politics masquerading as conviction. Just founders, products, and the question: would you work for these people if you weren't a VC?

"The idea of Spark was to really do things differently. Find places where you can be useful, find places where you can take a risk."
- Bijan Sabet, Spark Capital Co-Founder
Grew up - New York, USA
Education - Boston College '91
Co-founded - Spark Capital, 2005
Ambassador - Czech Republic, 2022-2025
Side project - Film photography
Family - Married to Lauren, 3 kids
Heritage - Iranian + Korean parents

Sabet's Investment Criteria

Before writing a single check, Bijan runs every opportunity through four questions. Simple on the surface. Ruthless in practice.

1
Are the founders extraordinary?
2
Do I love the product?
3
Is the vision compelling?
4
If I weren't a VC, would I want to work for these founders?

Three Decades. Three Industries.

1991
Drove from Boston to Silicon Valley in a hatchback after attending Macworld - a 3,000-mile career pivot.
1991-1997
WebTV Networks - Senior executive at one of the first companies to put the internet on television. Microsoft bought it for $425M.
c. 2000-2004
Moxi Digital co-founder; then joined Charles River Ventures as Entrepreneur-in-Residence in Boston - where he met his future Spark co-founder.
2005
Co-founded Spark Capital with Santo Politi, Todd Dagres, and Paul Conway - building a different kind of venture firm, from Boston.
2007
Led Tumblr Series A - after meeting 19-year-old David Karp and becoming a power user before picking up the phone.
2008
Led Twitter Series B when the company had 11 employees and hundreds of thousands of users. Joined the board. Sat there until 2011.
2013
Yahoo acquires Tumblr for $1.1 billion.
2015-2016
Led Series A in Cruise Autonomous (acquired by GM, 2016). Led Series C in Discord.
2021
Stepped back from General Partner role at Spark Capital after 17 years - joining Boston College Board of Trustees, focusing on family and climate investing.
2022-2025
Nominated by President Biden. Confirmed by the U.S. Senate. Served as 10th U.S. Ambassador to the Czech Republic - championing democracy, independent journalism, and Ukrainian refugee support.
2025-Now
Back in the private sector as Partner Emeritus at Spark Capital - building new tools, investing in climate, staying curious.

The Bets That Shaped a Decade

From a 11-person startup that reshaped global conversation to a 19-year-old's blogging platform that sold for a billion dollars. A selection.

Twitter
Series B, 2008
Led the investment when Twitter had 11 employees and a few hundred thousand users. Served on the board from 2008 to 2011 - during the years the platform went from curiosity to cultural infrastructure.
Board 2008-2011
Tumblr
Series A, 2007
Met 19-year-old David Karp, became a power user, then became an investor. Served on the board until Yahoo acquired Tumblr for $1.1 billion in 2013.
Acquired by Yahoo, $1.1B
Cruise
Series A, 2015
Led the Series A in the autonomous vehicle startup before self-driving cars were a boardroom fixture. General Motors acquired Cruise in 2016.
Acquired by GM, 2016
Discord
Series C, 2016
Led the Series C in the platform that became the default home for online communities - gamers, artists, developers, and everyone else who needed a room of their own.
Active Portfolio
Slack
Early Stage
An early bet on workplace communication that redefined how offices run - before "remote work" was a category.
Acquired by Salesforce
Warby Parker
Early Stage
Direct-to-consumer eyewear that proved an industry built on markups and monopolies was ripe for disruption.
IPO 2021
Postmates
Series B, 2014
Led the Series B in the delivery platform before "gig economy" was a household phrase. Uber acquired Postmates in 2020.
Acquired by Uber, 2020
Wayfair
Early Stage
Furniture on the internet, before that seemed obvious. An early Spark bet that became one of the defining e-commerce companies of the 2010s.
IPO 2014
Oculus
Early Stage
VR before VR was a product category. The company that made virtual reality a serious conversation - acquired by Facebook for $2 billion.
Acquired by Facebook, $2B

When the White House Calls

In August 2022, President Biden nominated Bijan Sabet to become the United States Ambassador to the Czech Republic. This was not the expected next chapter for a Boston VC. The Senate confirmed him by voice vote in December. He was sworn in December 16. By February 2023, he had presented credentials to Czech President Milos Zeman.

Sabet described it as "the honor of a lifetime to be chosen from the private sector to represent the United States." It landed differently than a portfolio exit. His parents - two immigrants who became citizens as quickly as the law allowed - had raised him on kitchen table conversations about freedom and democracy. Now he was the one delivering those talking points to foreign heads of state, and meaning them.

His focus as ambassador was pointed: strengthening U.S.-Czech ties, supporting Ukrainian refugees (the Czech Republic absorbed roughly 650,000 displaced Ukrainians despite a population under 11 million), countering disinformation, backing independent journalism, and advancing Roma equality. He brought the same urgency he applied to early-stage investing - a heightened sense of what needs to happen in a finite amount of time.

He served until January 20, 2025. A different kind of exit, but an exit nonetheless.

10th
U.S. Ambassador to Czech Republic
650K
Ukrainian refugees hosted by Czech Republic during his tenure
2
Years of diplomatic service (2022-2025)
"I have a heightened sense of urgency to do as much as I can in a finite amount of time."
- Bijan Sabet, Prague 2024

Beyond the Portfolio

Bijan Sabet does not shoot digital. That says something. In a world where every phone is a camera and every camera is instant, he chooses film - the format that makes you wait, forces composure, costs you something when you waste a frame. He fills his Instagram and Twitter feeds with scans from analog cameras, street scenes mostly, the kind of images that require you to see before you shoot.

He is married to Lauren, who sits on the Board of Regents at Boston College while he sits on the Board of Trustees. Three kids. No emails on Saturdays - a rule he set years ago and treats as non-negotiable. He has said, plainly, that family means more to him than anything else. Coming from a VC who backed some of the most attention-consuming products of the last two decades, that's a statement worth taking seriously.

He serves on the board of Human Rights Watch. He's been involved with the Democratic National Committee and the Senate Campaign Committee. He cares about economic inequality and education with the specificity of someone who watched his parents start with nothing and build something.

After returning from Prague in 2025, he started building again - small digital tools, seed investments with his wife, a focus on climate solutions. The hatchback-driving kid from New York has given himself another act. Watch the film rolls for clues about where it goes.

What Bijan Says

I find that the entrepreneurs I'm drawn to are willing to take bigger chances on things. It tends to lead to better results in terms of mission, purpose, and people recruitment.
On the founders he backs
It's the honor of a lifetime to be chosen from the private sector to represent the United States here in Czech Republic.
On his ambassadorship, 2023
I decided that the only way of doing something is by investing in things I was passionate about, things that I know something about.
On his investment philosophy
Family means more to me than anything else.
On his priorities
Find places where you can be useful, find places where you can take a risk.
On career advice
I have a heightened sense of urgency to do as much as I can in a finite amount of time.
On his ambassadorial mission

Eight Things Worth Knowing

01
His Twitter handle is simply @bijan - one of the rarest single-name handles on the platform. He got it early.
02
He drove from Boston to Silicon Valley in a hatchback after attending Macworld 1991. That drive changed everything.
03
He invested in Tumblr after meeting its founder David Karp when Karp was 19. He became a power user before becoming an investor.
04
His father immigrated from Iran, his mother from South Korea. They both came in the 1960s and met at a New York medical school.
05
He shoots analog photography and fills his social feeds with film scans - not because it's trendy, but because it makes you wait and think.
06
He holds a strict no-email Saturday rule. Has for years. The inbox does not run his weekend.
07
His wife Lauren also sits on the Boston College Board of Regents while he sits on the Board of Trustees. A power couple with overlapping calendars.
08
He holds both @bijan on Instagram and @bijan on X/Twitter. Two single-name handles. Extremely rare territory.

Latest from Bijan

January 2025
Concluded service as the 10th U.S. Ambassador to the Czech Republic on January 20, 2025, after over two years in Prague advocating for democratic values, press freedom, and Ukrainian refugee support.
2025-2026
Returned to Spark Capital as Partner Emeritus. Investing at seed and Series A alongside his wife, with a focus on climate solutions and companies addressing economic inequality.
2026
Building new digital tools: "Squares," a web app for formatting photos for Instagram, and "Add to GCal," a utility that converts screenshots, PDFs, and natural language into Google Calendar events.