Historians often trace the start of the California gold rush back to an entrepreneur, Samuel Brannan, walking through the streets of San Francisco shouting: “Gold! Gold! Gold from the American River!”One hundred and seventy-six years later, engineers are shouting a similar verse: Just swap out “American River” for “machine learning Ph.D.”Deep learning AI researchers and engineers are in higher demand than ever as corporations and startups compete for a dwindling pool of qualified talent.Tech com...