Wynn attended Lincoln County High School and was First-team GHSA All-State Class-A as a senior defensive lineman in 2004.

In 2008, Wynn appeared in 13 games, making twelve starts, recording 54 tackles and six quarterback hurries.

Wynn was signed by the Dallas Cowboys on October 15, 2013 due to injuries to the team's defensive line.

[6] After registering 18 quarterback pressures, 2 sacks and 2 passes defensed, he was re-signed to a two-year, $2.2 million contract on March 12, 2015.

[7] Wynn suffered a torn ACL in the first 2015 preseason game against the Carolina Panthers and was placed on the injured reserve list.

Wynn's wife Martavia gave birth to Jaruis's second son, Jarius Jr., on the morning of Super Bowl XLV.