He played college football at Oregon State, where he finished his career as the Beaver with the sixth-most starts in school history.

He signed as an undrafted free agent with the Denver Broncos in 2012, and played with six different franchises in his NFL career, and started two Super Bowls.

As a senior offensive lineman who stood at 6'5" (1.96 m) and weighed only 220 pounds (100 kg), Remmers did not get a single scholarship offer, however he qualified academically and was given the opportunity to be a preferred walk-on for OSU.

Remmers redshirted his freshman season in 2007 when the Beavers went 9–4, and when starting right tackle Tavita Thompson was ruled ineligible to begin the 2008 season, Remmers started the first seven games in his place, helping the Beavers rank second in the conference in total offense with an average of 407.1 yards per game.

In 2009, his sophomore year, Remmers assembled himself in the starting line-up and provided protection for an OSU offense that led the conference in passing with an average of 270.8 yards per game.

He was an All-Pac-12 Conference honorable mention in his junior year and was a finalist for the Burlsworth Trophy, which is given annually to the best player in the country who began his career as a walk-on.

During a rough stretch of the season the Panthers continued to make changes to their offensive line lineup, hoping to hit on a group that would gel.

With the newly installed Remmers at right tackle and Andrew Norwell at left guard, the O-line finally hit a groove.

[13] During the 2015 NFL draft, the Panthers selected offensive tackle Daryl Williams out of Oklahoma in the fourth round.

[16] He would wind up remaining the Panther's starting left tackle throughout the remainder of the season, as Oher never returned from his concussion.

[24][25] Remmers would once again appear in the Super Bowl, starting at left tackle in place of the injured Eric Fisher, as the Kansas City Chiefs fell to the Tampa Bay Buccaneers 9–31.