[1] Coming out of Riverview High School, Addae only received three scholarship offers from West Virginia, Iowa State, and Central Michigan.

[4] Unfortunately, Addae was not one of the 60 collegiate defensive backs to receive an invitation to attend the NFL Scouting Combine in Indianapolis, Indiana.

[7][8] At the conclusion of the pre-draft process, Addae was projected to be a seventh round pick or priority undrafted free agent.

[10] Throughout training camp, he competed against Darrell Stuckey, Brandon Taylor, and Sean Cattouse for a backup safety role.

[11] He became the Chargers' extra defensive back in nickel and dime packages as veteran Brandon Taylor was unable to play the first half of the season after undergoing reconstructive surgery on his knee during the offseason.

[12] He made his professional regular season debut in the San Diego Chargers' season-opener against the Houston Texans and recorded four solo tackles in their 31–28 loss.

On October 20, 2013, Addae collected a season-high five solo tackles and made his first career sack on Jacksonville Jaguars' quarterback Chad Henne during a 24–6 victory.

Head coach Mike McCoy named him the backup strong safety behind Marcus Gilchrist to start the regular season.

[19] Throughout training camp, Addae competed against Jimmy Wilson for the starting strong safety position after it was left vacant by the departure of Marcus Gilchrist to the New York Jets.

[21] On December 13, 2015, Addae collected a season-high seven solo tackles and deflected one pass in the Chargers' 10–3 loss at the Kansas City Chiefs.

On March 25, 2016, the San Diego Chargers signed Addae to a second-round tender and agreed to a one-year, $2.55 million contract.

[24] [10] Addae entered training camp slated as the starting strong safety, ahead of rookie Adrian McDonald.

Addae started the San Diego Chargers' season-opener at the Kansas City Chiefs and made five combined tackles in the 33–27 loss.

Unfortunately, Addae left the game in the fourth quarter after suffering a broken clavicle while making a tackle on Denard Robinson.

He made his interception off a pass attempt intended for running back Knile Davis and returned it for a 90-yard touchdown to mark the first score of his career.

Addae finished the 2017 season with a career-high 96 combined tackles (66 solo), seven pass deflections, and a half a sack in 16 games and 16 starts.