Mike Adler is a Principal Systems Architect at Etsy where he works on architecture reviews, incident response, engineering culture and bot management. He likes working at Etsy because they let him announce the annual winner of Etsy’s Three Armed Sweater Award— an award which celebrates the engineer who uncovered the most surprising and spectacular system behavior. Mike has been on-call for a variety of high profile and unglamorous systems and has spent decades devoted the craft of reliability. He even has a lucite plaque that proves he invented a patented system to improve website availability.