Frank Willemsen
InvestorInvestor at Sand Hill Angels
Los Altos, California
Writes $300K – $500K checks · typically $500K
About
Frank Willemsen is president and board member of Sand Hill Angels, an active angel investment organization based in Silicon Valley with over 100 members focused on mentoring and investing in early-stage companies. He brings experience in sales, marketing, cloud infrastructure, and business development from leadership roles at Cisco Systems, KPN, Sprint, and EDS, as well as expertise in merger and acquisition strategies, financial modeling, and strategic business development. Based in Silicon Valley, Willemsen has worked across Europe and Asia and brings experience in international business operations and diverse team leadership.
Experience
- Sand Hill AngelsMember Board of Directorscurrent2014 — presentSilicon Valley
- Sand Hill AngelsBoard Directorcurrent2012 — presentSunnyvale, CA 94085
- EurekaMentor, Advisor & Angel Investorcurrent2012 — presentLos Altos, CA
- Cisco SystemsGlobal Client Executive and Sales Business Development High Tech2009 — 2011San Francisco Bay Area
- Cisco SystemsSales Executive Manager European Cable Operators2006 — 2009The Randstad, Netherlands
- Cisco SystemsSales Manager Service Provider (SP) Scandinavia and Benelux2003 — 2006The Randstad, Netherlands
- Cisco SystemsService Provider Channel Manager Europe2002 — 2003The Randstad, Netherlands
- Cisco SystemsCountry Manager Cisco Indonesia2001 — 2002Jakarta, Jakarta, Indonesia
- Cisco SystemsSales Business Development Manager Service Provider AsiaPac2000 — 2001Singapore
- Cisco SystemsCorporate Account Manager KPN Telecom1998 — 2000The Randstad, Netherlands
- KPNCorporate Account Director Outsourcing1996 — 1998Den Haag, the Netherlands
- SprintManager Key Accounts1996Hoofddorp, the Netherlands
- SprintAM International Network Solutions1994 — 1996Noordwijk, the Netherlands
- Electronic Data SystemsProduct Management, Telecoms Consultant1990 — 1994Antwerp, London
- Electronic Data SystemsSystem Engineer1986 — 1990Rotterdam, Antwerp, London
Education
- Business School HEAO "de Maere", Enschede, the NetherlandsBachelor’s Degree, Bachelor of Economics / Business Administration1980 — 1984
- Atheneum, Twickel College, Hengelo, the NetherlandsHigh School1975 — 1980
Skills & more
+12 more
Product ManagementNew Business DevelopmentSalesStrategic PartnershipsMobile DevicesVenture CapitalCross-functional Team LeadershipWirelessChannelSaaSEnterprise SoftwareStrategyLanguages Dutch · English · German
From Frank's professional profile.
Shared employers
Also worked at Cisco Systems249
+ 243 more
Also worked at KPN11
+ 5 more
Also worked at Sprint24
+ 18 more
Also worked at Electronic Data Systems9
+ 3 more
Colleagues at Sand Hill Angels
Network9
Investors connected to Frank in public investor directories — a warm-intro map.





































