There are a lot of them. From Alan Macleod at unz.com:
The Israeli Defense Forces’ (IDF) Unit 8200 is infamous for surveilling the indigenous Palestinian population, amassing kompromat on individuals for the purposes of blackmail and extortion. Spying on the world’s rich and famous, Unit 8200 hit the headlines last year, after the Pegasus scandal broke. Former Unit 8200 officers designed and implemented software that spied on tens of thousands of politicians and likely aided in the killing of Saudi journalist Jamal Khashoggi.
According to employment website LinkedIn, there are currently at least 99 former Unit 8200 veterans currently working for Google. This number almost certainly underestimates the scale of the collaboration between the two organizations, however. For one, this does not count former Google employees. Nor does it include those without a public LinkedIn account, or those who do have an account, but have not disclosed their previous affiliations with the high-tech Israeli surveillance unit. This is likely to be a considerable number, as agents are expressly prohibited from ever revealing their affiliation to Unit 8200. Thus, the figure of 99 only represents the number of current (or extremely recent) Google employees who are brazenly flouting Israeli military law by including the organization in their profiles.