From January to June of 2014, he worked as an ad hoc judge for the « Justice de paix » of the Sarine district. In July 2014, he joined the law firm MCE Legal in Lausanne, first as an associate and then as a partner. Trimor Mehmetaj co-founded the law firm Eigenmann Associés in January of 2017. He then founded his own Law Firm in June of 2018, before joining mbp | avocats as a partner in September of 2021.