Jared Keyte, the nicklebacks coach at Rutgers is showing his "X" account as defensive coordinator at UMass.
The Hampshire Gazette has the story here.
Keyte's Scarlet Knights bio here.
Keyte was previously DC at Maine and also coached at Springfield College.
This article from Rutgers Wire in 2023 features Keyte.
Coach Harasymiak as a defense coach figures to be heavily involved in the defense. With Keyte with him on the Rutgers staff, they should be able to work together seamlessly.