Maria practises business law with a particular emphasis on infrastructure, including public private partnerships. Maria has provided legal advice in the following matters: advising the public sector, private sector and lenders on public private partnership and other alternate financing and procurement transactions, advising on various secured and unsecured credit facilities and project financings for lenders and borrowers, advising on various mergers and acquisitions for private companies, advising on various commercial property purchase, sale and lease transactions, advising on various corporate reorganizations, and providing general corporate and commercial advice.

Maria joined Farris as an associate in 1995 and became a partner in 1999. Prior to joining the firm, Maria clerked at the Supreme Court of Canada for Madame Justice Beverley McLachlin from 1990 to 1991.

Maria is repeatedly named in Chambers Global and Chambers Canada as a Key Individual in the areas of Public-Private Partnerships (PPP) and Infrastructure, has been selected for inclusion in the Best Lawyers list for Canada in the area of project finance law, and is consistently named as one of Lexpert Leading Lawyers in Canada.