ServiceNow Staff/Senior Staff

Hi, I am close to getting an offer from servcienow (search related team), boston location . The group was originally part of a company called attivio until its recent acquisition by servicenow. 1) How is the work life balance in the boston location? 2) Whats the base pay to expect for a Staff/Senior Staff role there? 3) Is the bonus negotiable or its fixed per level? 4) how is the tech stack is it outdated or its okay? any inputs would be helpful, thanks. #servicenow #engineering #software