If you do move here, stay in San Francisco / Berkeley and not San Jose / Palo Alto. It's better for single people in the SF area vs the San Jose area, where engineers move to raise their families in suburbia. You also wont need a car in SF, which at your young age can help you avoid higher insurance rates or needing to get a licence. Car rental companies will charge you an extra $25/day for being under 25, but they'll be more willing to give you free car upgrades because of the $25/day charge.