We've met many corrections officers on Orange Is the New Black [1], and even more get added to the mix in season six [2]. One of the guards we already knew from past seasons is CO Ryder Blake, played by Nick Dillenburg [3], whom you probably remember as being Mormon.
Dillenburg only has a handful of credits, and all of them are from TV shows. He made his acting debut as an officer on Law & Order, and we didn't see Dillenburg in anything else for four years until he appeared as a cop again in the show Elementary, starring Jonny Lee Miller and Lucy Liu [4].
He continued his man-in-uniform tour as an armed guard on Person of Interest. After that, he played a detective on Blue Bloods, a show that another OITNB character also appeared in [5].
Following his longstanding role on OITNB, Dillenburg appeared in the 2017 short The Bracket Theory (and actually wasn't a police officer). Since it doesn't seem like Dillenburg packs his schedule with too many acting gigs, we're not sure when we'll see him again.