Thomas A. Limoncelli is an author, activist and DevOps advocate.  His best known books include The Practice of System and Network Administration, The Practice of Cloud System Administration, and Time Management for System Administrators.
In 2005, Thomas and his colleague, Christine J Hogan, were awarded the the SAGE Outstanding Achievement Award. This annual award recognizes individuals who contribute to the system administration community over a number of years.
Thomas works in New York City at Stack Exchange, home of ServerFault.com and StackOverflow.com. Previously he worked at small and large companies including Google, Bell Labs / Lucent, AT&T. While at Google, Thomas was an SRE for projects such as the web crawler, Blog Search, office IT deployments and The Ganeti project (http://code.google.com/p/ganeti).
Outside of work, Tom spent years doing grass-roots civil-rights activism both nationally and in his home state of New Jersey.
Blog: https://everythingsysadmin.com/
Twitter: @YesThatTom