He's not Aaron Judge but he's a Bay Area native (Mountain View) and a former 1st-rounder (#38, 2012) from Cal Poly. Mitch Haniger turns 32 in December and is a right-handed hitter who has mostly played right field in his career. It's a 3-year deal worth $43.5M. There's an opt-out after 2024.
When he's been healthy he's a solid player with some pop. The Giants need some shoring up in the outfield and in the middle of the lineup and Haniger should help with both. He's a career .261/.335/.476 hitter in 564 G (2437 PA) mostly with the Mariners.