Davor Brenko graduated from the Faculty of Economics in Rijeka and began his professional career in 2000 at the former Riviera hoteli i ljetovališta, in Sales and Marketing. In 2002 he became project manager for research into guest satisfaction and guest relations management, while in 2004 he oversaw Direct Sales, which quickly became the strongest sales channel in Valamar.

In 2009, Mr. Brenko was promoted to the position of Valamar’s head of Direct Sales and Marketing and as such has participated in creating developmental projects which resulted in upgrading sales, marketing and business development. At the beginning of 2010, he joined Istraturist Umag d.d., where he headed Business Development and implemented strategic marketing and destination management initiatives, aimed at raising the quality and competitiveness of the company and its destination.

As of 2015, Davor Brenko has been appointed Vice President of Sales and Marketing at Valamar Riviera d.d., where he achieved a double-digit growth in sales income, and has advanced the development of the direct channel. He has also launched a new loyalty program and re-branded the portfolio under the umbrella brand Valamar All you can holiday. Mr. Brenko has concluded partnerships with certain global tour operators and Valamar launched new markets for guests arriving by plane in north Adriatic destinations. He is responsible for numerous projects aimed at strengthening the tourism offer, destination management and raising the attractiveness of Valamar's destinations for visitors.

In 2021, he was named Senior Vice president of sales and marketing at Valamar Riviera.