Crytek’s Lead Research and Development Graphics Engineer Tiago Sousa has left the company to go work at Doom developer id Software, Sousa has announced via Twitter.

Sousa says he’ll work on the next Doom and the graphics engine the company is making for it, idTech 6. id Software released a teaser trailer for Doom during E3 2014. At this year’s QuakeCon 2014 conference, it showed off the new game, finally detailing what exactly we can expect, but only to those who were there in person.

According to his Linkedin profile, Sousa was with Crytek for more than a decade, working as a graphics programmer and engineer on the company’s proprietary CryEngine and games like the first Far Cry, Crysis, Xbox One-exclusive Ryse: Son of Rome and other “undisclosed multiplatform projects.”

News of his departure comes after multiple unconfirmed reports that Crytek is struggling financially, especially at its Crytek UK office, currently working on Homefront: The Revolution. The game director of that project, Hasit Zala, is said to have left his position at the company as well.

Crytek, which purchased the Homefront series during THQ’s bankruptcy auction in January 2013 for $544,000, officially announced Homefront: The Revolution leading up to E3 2014. The game is an open-world shooter set in a Philadelphia occupied by the North Korean military, and is scheduled to release in 2015 for Xbox One, PlayStation 4, and PC.