Tracy Isacke has been spearheading Spain-based telecommunications company Telefónica’s big push into corporate venturing as director of its Silicon Valley office.

Isacke has helped web-based telephony company Jajah integrate with Telefónica, after she led the acquisition of that business in 2010 for $207m.

As well as business development, Isacke has worked in sales for O2, the UK-based mobile operator acquired by Telefónica. She worked at Portrait Software between 2001 and 2005 and at US-based photocopying corporation Xerox between 1984 and 2000.