Apple has hired former Nest executive Yoky Matsuoka to work on the company’s health intiatives, Fortune reports. Matsuoka is a famed robotics expert who co-founded Google’s X lab, helped develop a revolutionary robotic arm at MIT and won a MacArthur Foundation “genius” grant for using technology to help disabled people and stroke victims regain the use of their limbs. She left her position as Nest’s head of technology in 2014 when Google bought the company and planned a move to Twitter before announcing she had been diagnosed with a life-threatening illness. Apple said Matsuoka is working for COO Jeff Williams, who oversees the company’s growing HealthKit, ResearchKit and CareKit frameworks.