Attie joined Hofmeyr (now Cliffe Dekker Hofmeyr) as a Director in 1984.
Major clients include AECI, Sanlam Capital Markets, Komatsu, Massmart, Pioneer Foods, Circlevest, Industrial Development Corporation of South Africa (IDC), Sanlam Properties, Mia Group of Companies, Sasol Group of Companies, Pareto, Sun International, , Absa Devco, Stay at Southpoint Properties, , Liberty Group Properties, , Afhco (Affordable Housing Company), Vukile Property Fund, Century Property Developments, , Old Mutual Life Assurance Company (SA), all major South African banks.
Together with Werner van Rhyn of Werner Rhyn Property Management Development, advised the Mia Group of Companies in the development of Waterfall City. This development, at a worth of R11 billion, is ranked as the largest property development in South African history (Financial Mail, 3 February 2006).
Chambers Global 2017 and 2018 ranked Attie in Band 1 for real estate.
Legal 500 EMEA 2017 and 2018 listed Attie as a 'leading individual' for real estate and recommended him in 2015–2016.
Best Lawyers International 2008–2017 listed him as the Johannesburg Real Estate Law Lawyer of the Year and listed him for real estate law from 2014–2018.
Who’s Who Legal 2012–2014 identified Attie as a leading lawyer in real estate.
In 2014 he was listed in The International Who’s Who of Business Lawyers.
Attie received a Lifetime Achievement Award for Excellence in Real Estate Law at the inaugural SA Professional Services Awards 2014.
Authored the South African chapter for the International Comparative Legal Guide to Real Estate Law, 2006 and 2007 (2nd edition), published by Global Legal Group in London.
BCom LLB, University of the Free State
Year of admission as an attorney and conveyancer: 1980