Most of the High Tech jobs in the L.A. area have migrated out of the metro area’s to the outer suburbs over the last 30 years (with the exception of Santa Monica and a little on the west side).

You are far more likely to work in Arcadia or West-Lake, Agoura, Valencia, Simi Valley, Moorpark, Newbury-park etc.. than the L.A. Metros if you work in High tech, it is very rarely that you would go to the Metro areas for most people.