Notable for co-founding both a Silicon Valley investment organization called Formation 8 Partners and a multi-billion-dollar financial and global defense analysis company called Palantir Technologies, Lonsdale also chaired a California company called ONEHOPE Wine and a finance and technology organization by the name of Addepar.
After earning a bachelor's degree in computer science from Stanford University, he worked for the PayPal and Clarium Capital companies.
He headed a non-profit government education organization called California Common Sense.
A native of Fremont, California, he competed in and won two junior chess championships during his time at Mission San Jose High School.
He and the pop singer Lady Gaga collaborated on the founding of a celebrity social network called Backplane.