Dr Stanley Portelli is a lawyer by profession and is a partner at a Maltese law firm. He obtained his doctorate in law from the University of Malta in 1995. In 1993 he was elected by popular vote in his district to serve as a local councillor for a period of four years.

From 1994 to 2001, Dr. Portelli was employed with the Financial Services Unit at Coopers & Lybrand and eventually PricewaterhouseCoopers. He was a director of Malta Investment Management Co Ltd (MIMCOL) and Malta Government Investments Ltd between 2004 and 2008. In 2007 he was appointed member of the Port Workers Board representing Malta Freeport Terminals, and in 2008 was appointed member of the Board of the Lotteries and Gaming Authority, a post he held until April 2013.

Between 2001 and 2009 he also held the position of executive Director for Human Resources, Legal and Corporate Affairs as well as Company Secretary at Malta Freeport Terminals Ltd. and Freeport Terminal (Malta) plc, where he was also on the Board of Directors from 1999 to 2004.

Until March 2013 he was the Chief Executive Officer of the Authority for Transport in Malta (Transport Malta), having overseen the amalgamation in 2010 of what were previously three distinct transport regulatory entities.

Dr Portelli currently also serves as a non-executive director on a number of Maltese companies involved in various cross-border and overseas activities, as well as listed and regulated entities. He is also a consultant to a number of family-owned businesses.

He is a member of the Chamber of Advocates and the Institute of Financial Services Practitioners.