HackerRank

HackerRank is a developer skills platform that helps businesses evaluate software developers based on skill. Over 2,800 customers across all industries, including 5 out of the leading 8 commercial banks in the U.S., rely on HackerRank's automated skills assessments to evaluate and hire technical talent from around the world. More than 18 million developers (over 30 percent of the global developer population) trust HackerRank to learn and practice coding. Every eight seconds, someone around the world completes a HackerRank assessment