Business Administrator of the Universidad del Icesi, he has 26 years of experience in PwC Colombia in auditing and tax audit services and has taken several internal financial audit courses throughout his career and courses on American accounting standards US GAAP, standards International audits of IFRS and accounting and registration process with the Security and Exchange Commission (SEC) of the United States, and has trained with PricewaterhouseCoopers to perform work in companies under the Sarbanes Oxley Act.
Until 2018 he served as the responsible partner for PwC in Colombia of the risk management and independence function, and during the period between 2016 and 2017 he served as the responsible partner of the independence function of the LAN region (LatinAmerica Network ). From 2011 until 2018 he was the Partner in charge of the Cali Office for PwC Colombia
During his career at PwC, he was in charge, among others, of the audit of the following clients: Unilever, Parmalat Colombia Ltda., Coomeva Group, Manuelita Group, Riopaila Castilla Agroindustrial Group, Smurfit Kappa Cartón de Colombia SA, Laboratorios Baxter SA, Aventis Pasteur SA, Xerox de Colombia SA, NCR Colombia Ltda., Ingenio del Cauca SA, Ingenio Providencia SA, Carlos Sarmiento L. & Cia. San Carlos S.A. Ingenuity, La Cabaña S.A., IBM of Colombia, Bristol Myers Squibb of Colombia Ltda., Reckitt Benckiser Colombia S.A., Varela S.A., Fabrisedas S.A.
From July 1, 2007 and until March 31, 2009, Juan Mac was professor of the university chair of Fiscal Auditor at the ICESI University of Cali.
Member of the Board of Directors of AMCHAM Suroccidente from June 2012 to May 2018 and Chairman of the Board of Directors of AMCHAM Suroccidente from May 2015 to May 2018.