Born in Nicosia, Mert Sanıl completed middle and high school education at Nicosia Turkish Maarif College. Between 2004 and 2008, a bachelor's degree in Biochemistry was earned at the University of Liverpool. In 2010, a master's degree in Clinical Biochemistry was completed at the University of Surrey. Between 2014 and 2016, a second master's degree was completed in the Infectious Diseases department of the London School of Hygiene and Tropical Medicine, and doctoral studies are currently ongoing in the Department of Health Management at European University of Lefke.

After returning to the island in 2011, military service was completed. Following two years of work in the biochemistry department of the medical laboratory of a private hospital in Nicosia, Mert Sanıl established a medical laboratory at the same hospital's Kyrenia branch and served as head of biochemistry of this laboratory between 2014 and 2016.

In 2016, Wellcare Laboratories Ltd was founded with Mert Sanıl as a founding partner. In 2017, Mert Sanıl became a co-founder of the medical laboratory at Medical Port Hospital in Kyrenia. In 2019, Mert Sanıl became a founding partner of the medical laboratory at Miracle Hospital in Nicosia, and serves as head of biochemistry and company director in the laboratories established within these two private hospitals.