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Mark Jacobstein

Entrepreneur • Advisor San Francisco Bay Area, US

Product focussed founder and/or CEO of five companies. Four large exits. Raised VC from Sequoia, NEA, KPCB, CRV, Khosla, Flatiron, etc.

Product focussed founder and/or CEO of five companies. Four large exits. Raised VC from Sequoia, NEA, KPCB, CRV, Khosla, Flatiron, etc.

3 vouches

Primary Skillsets

  • Business Development
  • Fundraising
  • Product
I have an idea, but I'm open to other ideas

Primary Cofounder Skillsets

  • • Business Development
  • • Fundraising
  • • Product

Involved In


Digital Chocolate
Small World Software


SpotOn, Inc
Progresso Financiero
Spire Science
Expediate Financial
Transit to Trails
Full Circle Fund


Chief User Engagement Officer Guardant Health July 2015 - present
Chief User Experience Officer Guardant Health July 2015 - present
Board Member Full Circle Fund 2011 - present
Chief Sabbatical Officer No longer on Sabbatical January 2013 - June 2015
VP Product Management Qualcomm October 2010 - January 2013
CEO iSkoot December 2007 - October 2010
Entrepreneur in Residence Charles River Ventures August 2007 - November 2007
EVP Corporate Development & Marketing loopt, Inc. January 2006 - July 2007
President of Publishing, co-Founder Digital Chocolate December 2003 - December 2005
Entrepeneur in Residence Advantage Capital 2003 - 2003
VP Wireless and iTV Sporting News 2001 - 2002
CEO Small World Sports 1994 - 2002
SVP iXL 1998 - 2000
Founder and Partner (de facto co-CEO) Small World Software April 1994 - 1998


Harvard University Computer Science with Cognitive Science 1988 - 1992

Interested In

Cofounder With
  • • Engineering
  • • UI/Design
Markets of Interest
  • • Healthcare
  • • Local
  • • Media
  • • Mobile
  • • Smart Home
  • • Social Impact
  • • Video
  • • Wearable Tech

You Should Know About Me

Key Strengths

Leadership • Business Development • Business planning • Product Development • Strategic thinking

Key Accomplishments

I'm an old school serial entrepreneur, having founded and/or run five important tech startups since 1994. At my core I'm a product guy; the essential passion I have is for seeing the possibilities that platform changes will enable -- e.g. I was the first person in the world to bring fantasy sports (and hence social gaming) to the internet in 1994, as I saw the possibilities that networked technologies would provide for entertainment. I love building great, fun, cohesive teams as well.

How I like to work with people
As an Advisor

I'm relatively casual and open to whatever is most helpful for the entrepreneurs.

Vouches Received

Vouches Given

Think Mark is awesome?
Vouch for them.

Jessica Alter
Founder and CEO, FounderDating. Harvard Business School grad. University of Michigan grad.
Mark will make an awesome entrepreneur.
Andrew Yang
We worked together
Mark has built and started companies successful companies several times already, with Smallworld (acquired) and iSkoot (acquired by Qualcomm ... ) among his highlights. He's a highly networked universally well-regarded computer jock from Harvard who actually gets things done. What's not to like?
Todd Kimmel
They're my friends
Mark has the interpersonal skills to be well liked by both employees and external parties (investors, customers, journalists, industry stake ... holders) along with the intelligence, judgment and analytical chops to gain respect from those same folks...he is a person you want to do business with but he has the substance and thought to back it up.

Evan Tana
We worked together at Digital Chocolate
I've worked with literally hundreds of talented people at my five startups; Evan is the most talented employee and colleague I've had. He's ... a terrific leader and listener, creative and deeply intelligent, and as connected as anyone in the Valley.

Jeff Foster
They're my advisor
Jeff is a brilliant guy (and I don't use the word lightly) who has very specific knowledge about a massive space (mortgages and consumer fin ... ance) that put him in unique position to build a very important company.

Ahmad Zahran
They're my investor  •  Founder of Infinitec. Ran largest Kickstarter outside USA. Created & launched 2 consumer products. Changing how we watch TV.
Ahmad has already proven to be a great entrepreneur; his first two products were brought successfully to market, despite the challenges of b ... uilding hardware, working from Dubai, building for "blue ocean" markets etc. He's both a creative thinker about consumer problems (and how to solve them), and a scrappy "doer" who gets products built, find team members to execute, and can market, sell, lead, etc.

Harrison Dillon
We worked together
Harrison has already been the founding President of Solazyme, a public company worth more than $650M, so it's pretty evident that he is, and ... will continue to be, a world-class entrepreneur. He's brilliant, driven, and deeply experienced.

Sean Byrnes
Founder of @Flurry, currently a Free Agent. Active Startup Advisor, Father, Volunteer, Artist.
Sean's a great entrepreneur. He founded one of the seminal companies in the history of mobile applications; Flurry underpins much of the mob ... ile app ecosystem and Sean was one of the drivers that made that possible. He's a thoughtful and creative product strategist, a practical and experienced company builder, and an incredibly nice guy. Sean would be a help to nearly any entrepreneur.

Ahmad Zahran
Founder of Infinitec. Ran largest Kickstarter outside USA. Created & launched 2 consumer products. Changing how we watch TV.
Ahmad is a terrific entrepreneur; he's a genuine creative visionary, but he's also practical and focused. He's done everything from running ... the largest non-US Kickstarter in history to pivoting a b2c businesses into a b2b success. He's product focussed, but his engineering background and experience with companies like Nokia serve him well when it's time to deliver. Ahmad's also got a really unique global perspective that bridges Europe, North America, and the Middle East, something many Silicon Valley entrepreneurs lack.

Auren Hoffman
Fmr CEO, LiveRamp (sold for $310 million). Fmr Board: BrightRoll.
Auren is a world class entrepreneur. In addition to the extraordinary (and well known) success he's had with LiveRamp, his angel investments ... , and board positions (e.g. BrightRoll), Auren is a deeply respected and connected valley founder. He's a deep thinker, a great guy, exceptionally well connected (and respected), and someone any entrepreneur would be lucky to have as an advisor.

Steve Zales
Managing Director, Strategic Concepts Consulting LLC. Previously Chief Marketing, Technology and Digital Officer, Hudson. Kellogg grad.
Steve's a terrific business thinker and deeply experienced exec. His experience cuts across numerous industries, including media (old and ne ... w), sports & entertainment, technology, and recruiting.