Noah was admitted to practice in South Australia in March 2010, commencing work immediately in the criminal section at the Aboriginal Legal Rights Movement.  After about a year in that role, Noah moved to the private sector, working as a criminal defence lawyer in a number of firms, most significantly at Mangan Ey from 2013 to 2019.  In 2019, Noah moved to Alice Springs, initially as the Senior Solicitor for the Northern Territory Legal Aid Commission there, and then in the role of manager, where he remained for a little over 3 years.  In July of 2023 he returned to South Australia, joining Elliott Johnston Chambers.  Noah practises primarily as a criminal defence lawyer, as both a trial and appellate advocate.