AddThis cofounder becomes Expa entrepreneur-in-residence

The cofounder of Northern Virginia's social bookmarking site has taken off for San Francisco.

AddThis cofounder Hooman Radfar is building new things in California. (Photo by Flickr user Tech Cocktail, used under a Creative Commons license)

Hooman Radfar, cofounder of the Vienna, Va.-based social bookmarking website AddThis, announced he will become the first entrepreneur-in-residence (EIR) at startup studio Expa.
There, reports TechCrunch, he will work alongside two other social media trailblazers: Foursquare cofounder Naveen Selvadurai and StumbleUpon cofounder Garrett Camp. Expa has already raised $50 million.
To D.C.’s chagrin, Radfar had left the East Coast last October to resettle in the Bay Area. There, he created 10e9, a company that has advised and invested in startups like Speek and sweetgreen and where he’ll be staying on in a reduced capacity.
Here’s what Radfar had to say about the move on Expa’s website:

From pencil to bits, I’ve always enjoyed translating ideas to implementation in different mediums. As co-founder of AddThis, I was fortunate to collaborate with an amazing team to create and deliver publisher tools to over 14M websites reaching 1.75 billion people. The Expa team are true craftsmen – from Foursquare to Uber, they’ve created iconic products used by millions of people worldwide. I’m excited to embark on my next creative journey, building world-changing products with the Expa team.

Companies: AddThis

Join the conversation!

Find news, events, jobs and people who share your interests on's open community Slack


‘Shark Tank’ reruns and mentorship prepared Baltimore entrepreneur for her primetime moment

DC daily roundup: the DMV's VC cooldown, SmartSigns for safer driving; Rep. Schiff's AI copyright bill

How DC’s new traffic signs can tell when drivers are on their phones or not wearing a seatbelt

What AI means for the future of SaaS: Reality vs. hype

Technically Media