He worked for Edmonton, Alberta-located game developer BioWare from 1999[1] to 2016,[2] before leaving to join another Edmonton-based studio, Beamdog, as their Creative Director.

In 2019, Gaider announced the assumption of a Creative Director position at the newly-founded Melbourne, Australia-based indie game developer, Summerfall Studios, and a new project entitled Stray Gods: The Roleplaying Musical.

Gaider began his professional life in the service industry, eventually managing a small hotel, while game designing was a side hobby to him.

Gaider then assumed the role as lead writer on BioWare’s new fantasy game, Dragon Age: Origins, which was released in 2009.

In Dragon Age II (2011), Gaider is credited with writing the characters Cassandra Pentaghast, Fenris, and Knight-Commander Meredith.

According to Electronic Arts' fiscal 2015 third quarter earnings report, Dragon Age: Inquisition is the most successful launch in BioWare history based on units sold.

The new studio's first project is Chorus: An Adventure Musical, funded both by Creative Victoria and a successful crowdfunding campaign on the Fig platform, which earned $690,079 USD from 6,018 backers as of November 10, 2019.