Edelman was admitted to practice in the Supreme Court of Western Australia in 1998 after serving as an associate to Justice John Toohey in the High Court of Australia in 1997 and completing an articled clerkship at Blake Dawson Waldron. He was a member of the Chambers of Malcolm McCusker QC from 2001 until his appointment as a justice in 2011. Edelman was called to the English bar in 2008 and was a member of One Essex Court chambers.
Academic
Edelman became a tutor at Keble College, Oxford, in 2005. Following his appointment to the Supreme Court, Edelman continued to teach as an Adjunct Professor at the University of Queensland and University of Western Australia, as well as holding the honorary position of Conjoint Professor at the University of New South Wales. Edelman is also a patron and former editor of the Oxford University Commonwealth Law Journal. Edelman has been noted as having a "prodigious" record of publications. At the time of his appointment to the Supreme Court, his publications included six books and more than 80 articles, reviews, and notes.
Judicial
Edelman was appointed to the Supreme Court of Western Australia in April 2011 following the retirement of Justice Peter Blaxell. He took the oath of office on 22 July 2011. It was reported that, at the age of 37, Edelman was the youngest person to join the Supreme Court bench. However, at the welcome ceremony for Edelman, Chief JusticeWayne Martin noted that the reports were incorrect and in fact Sir Lawrence Jackson was appointed at the age of 36 in 1949. In April 2015, Edelman joined the Brisbane court of the Federal Court of Australia. He replaced Justice Peter Jacobson, who had retired in January 2015. Justice Edelman decided what may become a watershed case in ACCC v Valve Corporation FCA 196. This case held that an overseas registered entity using a contract governed by overseas law, not incorporated in Australia, collecting revenue in USD but providing services to Australian consumers must comply with Australian Consumer Law or face significant penalties. In November 2016, it was announced that Edelman would be appointed as a Justice of the High Court of Australia. He commenced the appointment when Justice Susan Kiefel became Chief Justice of Australia on 30 January 2017. He is the fourth youngest person to join the Court, after H. V. Evatt, Sir Edward McTiernan and Sir Owen Dixon.
Personal
Edelman is married and has two children. Edelman is Jewish.