On 11 March 2024 he started a nine-year term as a judge of the International Criminal Court.
[3] Starting in the 1990s, Damdin was a defence lawyer, a prosecutor, and a judge in criminal law, representing the accused, victims and witnesses.
As a prosecutor, he investigated and prosecuted cases of rape, torture, extrajudicial execution, sexual violence, human trafficking, abductions and terrorism.
He contributed to the implementation of the Rome Statute, the treaty that establishes the International Criminal Court, into Mongolian law.
[4] On 11 March 2024, Damdin began a nine-year term as one of the judges of the International Criminal Court.