Another Twitter exec left the nest to hit the fast lane. Twitter’s senior director of engineering, Akash Garg, will be moving to ride-hailing company Uber, he announced via Twitter Tuesday.Garg served in the position for more than four years, he noted in his announcement, and he oversaw Twitter’s growth and international team, as his Twitter bio noted. Interestingly, international expansion is one of the crucial markets and initiatives Uber has been pushing as it seeks to solidify its prominence in the ride-hailing industry. Details