[1][2][3] Armin appeared in David Hare's Behind the Beautiful Forevers,[4] and the acclaimed 2015 production of Stephen Adly Guirgis's The Motherfucker with the Hat,[5] both at the Royal National Theatre.
In her Evening Standard review of Steve Water's 2017 play Limehouse at the Donmar Warehouse, critic Fiona Mountford praised Armin as "one of this country's finest under-the-radar stage actresses".
[6] Armin later performed alongside Juliet Stevenson in the original production of Robert Icke's critically acclaimed The Doctor at the Almeida Theatre,[7] and in 2023 she starred in the English premiere of Hanya Yanagihara's A Little Life directed by Ivo Van Hove.
[8][9] Armin's screen credits include Peter Morgan's The Lost Honour of Christopher Jefferies,[10] the award-winning C4 comedy-drama Home,[11] and the acclaimed TV adaptation of Anthony Horowitz's Magpie Murders.
In 2023 she appeared as series regular The Boss in Mawaan Rizwan's BBC Three comedy, Juice and she will lead Series Two of BBC Drama Showtrial, alongside Adeel Akhtar, in 2024.