What rank does Amy Santiago become in season 5?

Amy Santiago becomes a sergeant in season 5 of Brooklyn Nine-Nine. The promotion marks her move from detective into supervision and brings her closer to her long-standing ambition of rising through the NYPD ranks.

Amy begins the series as a highly competitive detective at the fictional 99th Precinct. She is exceptionally organized, studies obsessively, and often measures herself against Jake Peralta. Her promotion reflects both her professional skill and her determination, although becoming a supervisor also creates new challenges as she learns to manage colleagues who were previously her peers.

Season 5 is also a major personal period for Amy: she becomes engaged to Jake and later marries him. Her career continues to advance after the promotion. In the final season, Amy helps design a citywide police reform program and becomes chief of that program, while Raymond Holt becomes deputy commissioner. That later role can cause confusion, but the rank Amy earns in season 5 is sergeant, not captain or lieutenant.