Leirvåg joined Zalaris in 2006 as a developer in Zalaris Consulting AS. There he has focused mainly on creating system integrations with customer and vendor systems. Leirvåg was responsible for establishing Zalaris integration platform based on SAP PI. He was appointed CTO in 2011.

Prior to joining Zalaris, Leirvåg held positions at Hewlett-Packard and the Swedish IT consultancy WM-data, working with SAP administration and support within the Statoil environment in Stavanger. Leirvåg has a Master’s of Information Technology, with a graduate certificate in enterprise systems from Queensland University of Technology in Brisbane, Australia. In total, Leirvåg has 19 years experience working with ERP-systems.