Johannes Meran was a Senior Consultant with Roland Berger & Partners from 1996 to 1999, before he moved to the investment banking division at Goldman Sachs & Co. He then transferred his investment experience to the private equity company Cognetas LLP in London, England, where he oversaw numerous acquisitions and, as a member of the board of several portfolio companies, he advised a range on their investment and value creation strategies.

In 2009, Johannes Meran co-founded Petrus Advisers LLP, a London-based investment company, for whom he acted as partner until early 2012. During his time with Petrus Advisers he successfully raised around €210 million for private equity transactions. In 2010, Petrus Advisers acquired a 25 percent share of conwert Immobilien Invest SE, a Viennese stock market corporation, before selling its stake to the Haselsteiner Family Foundation in 2012. Petrus Advisers Hedge Fund raised almost €60 million in equity capital between 2009 and 2012.

Johannes Meran was the representative of Petrus Advisers on the board of conwert Immobilien Invest SE and acts as executive Chairman of conwert's Executive Board from 2010 until 2014. Thanks to his wide-reaching restructuring programme, he developed the company into one of the leading real estate stock market corporations in the German-speaking region. During his time with the company, Conwert sold real estate with a combined value of almost €1 billion and added around €600 million of property to its portfolio. Following the successful acquisition of KWG Kommunale Wohnen AG, Johannes Meran was appointed to KWG AG's Supervisory Board. At the same time he was also a member of Eco Business Immobilien AG's Supervisory Board and successfully drove the streamlining of the office and retail portfolio of this international real estate company.

In 2014, Johannes Meran founded Equity Partner GmbH. The company provides M&A and investment advisory services. The company successfully raised approximately €800 million of equity capital for a variety of German real estate portfolio acquisitions. He is also a shareholder in GxP Asset Management.