Is there any relationship between "production engineering" and DevOps?
According to Facebook


  Production Engineering at Facebook is a hybrid between software and
  systems engineering; it keeps Facebook running smoothly and scaling
  efficiently. The Production Engineering team works within Facebook’s
  product and infrastructure teams to make sure our services are
  reliable and scalable. The team writes code and debugs hard problems
  in live production that impact more than 2 billion people around the
  world. From backend services like our Hadoop data warehouses, to
  frontend services like News Feed, to infrastructure components like
  our caching infrastructure, load balancing and deployment systems, the
  Production Engineering team keeps Facebook running.


as team works within product and infrastructure meaning it works along with developers and operations.