Summary List PlacementCalico, the Alphabet-backed life sciences company devoted to solving ageing, is one of the company's most mysterious upstarts. But the biotech arm is quietly chugging along and, in the past few months, has opened up a handful of new roles across research, computing, and safety. The company is hunting for a new head of oncology, who would oversee Calico's therapeutics programs and lead a lab, according to the job description.