She went on to become the first Malaysian woman to be appointed a High Court Judge in 1983, a Court of Appeal Judge in 1994, a Federal Court Judge in 2001, and Chief Judge of Malaya in 2005, a position she held until her retirement two years later.

She was the first Malaysian to be elected President of the Commonwealth Magistrates and Judges Association from 2006 to 2009. After retirement, she was appointed Pro-Chancellor of the University of Malaya and joined the boards of several public companies, becoming Chairman of the Board of Directors of Mah Sing Group Bhd in June 2018.

AWL is honoured to count Tan Sri Siti Norma among its former Presidents and to have been led, at a formative moment in the organisation's history, by one of Malaysia's most distinguished jurists.