Don Ritzen
High-Tech Entrepreneurship

Don Ritzen

Current position
Co-Founder & Chief Commercial Officer, Rockstart
Social Media
Early Stage Investment
Business Development
Team Building
Venture Capital
New Business Development
Product Development
Business Strategy

Personal web


Passionate and result oriented entrepreneurial leader with nearly 10 years of experience. He has built a track record in Digital Product Development, Launch of New Businesses & business models, General Management, Lean Startup and Global Strategy with a focus on the intersection of technology, people and venturing.

Together with a great team Don co-founded a company called Rockstart where they created, launched and managed International programs for entrepreneurs in the domains of Web&Mobile, Smart Energy, Digital Health and Artificial Intelligence, both in Netherlands and LATAM. With his co-founder Rune, Don screened 5000+ startups pitches and together with an IC selected the best 150 startups to enter one of their programs.

After entering the program the startups received follow on investment totalling 70+ million from private investors and grew from 0 to EUR 350 million in value. Don also started Rockstart’s corporate practice where he launched custom made programs and competitions for companies like Philips, Sony and Shell.

Don loves working with teams and inspiring people to become more entrepreneurial, implementing new business models, applying the latest (lean) startup methodologies and helping to innovate companies and bring new products to market. In his personal life he enjoys spending time with his family&friends, and he likes travelling, nature, squash, music and politics.


Co-Founder & Chief Commercial Officer
June 2011 – December 2018

Early Stage Investor
March 2012 – Present

Early Stage Investor
March 2012 – Present

Early Stage Investor
3D Hubs
March 2013 – Present

Co-Founder & Managing Director
Rockstart Accelerator
June 2011 – December 2015

Startup Digest
October 2011 – November 2015

Organiser& EU Facilitator
Startup Weekend
June 2010 – September 2015

Organiser SW Amsterdam
Startup Weekend
June 2010 – September 2013

Lean Startup Circle Netherlands
December 2011 – August 2012

Manager Business Development
January 2011 – October 2011

Agent Frontoffice Tech
March 2005 – December 2005

Agent Frontoffice Tech
KPN Telecom
July 2001 – December 2002

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