Looking for a job? Consider becoming a Puppet master.

Not the kind of puppet with strings and moving parts. "Puppet" is the name of software used to automate and simplify systems administration—and it's in high demand.

Job postings with the keyword "Puppet" more than tripled from a year earlier in the three-month period from April to June, according to data from Indeed.com, a job search site that aggregates job postings across websites and all industries. Jobs requiring Puppet skills pay an average salary of $95,000, Indeed.com found.

Software engineers might also want to brush up on their Hadoop skills. Hadoop, named after a stuffed elephant, is for processing and analyzing large data sets. Job functions that make use of the program include software engineering and database administration. Use of Hadoop as a keyword more than doubled.

Skills related to mobile operating systems and Web and mobile applications are also in high demand: The fastest-growing keywords in job listings over the past year are "HTML5," "iOS," "Android," and "Mobile app," along with "Puppet" and "Hadoop," according to Indeed.com.