This is an engineering position within the PeopleOps (HR) group at Google, which may be why it remains unfilled after 8 months. Nobody has been able to find it! Also the job as posted is in London, but if you are a strong candidate I know Google will either move you to London or let you work in Mountain View (or possibly New York). The position is with my girlfriend's team so I have a pretty good idea of the problems they are solving and what skills they need. Feel free to email me with questions.
Clickable link is below...