Lejerskar began his career at Volvo Aerospace as program manager for the Arianne 5 rocket program for the main engine rocket. He was responsible for the coordination and development between Volvo, MBB, Fiat and SEP.
He founded PFAB (Projektledning Portugal AB) a subsidiary in Portugal with Escandinavas Ltd. that developed construction and real estate and, as CEO, built the company from a two-person operation to over 300 people. He also founded and ran PKAB, a company that focused on numerical simulation to virtual reality and interactive 3D.
In 1998 he co-founded EON Reality and also headed RealityBUY.com, a company which developed interactive 3D focusing on development, content and application. The company grew organically to a peak of US$240 million.
In 2009, he co-founded Greenwave Systems, a company which accelerates Internet of Things with a software and services platform that enables managed services simply, affordably and at scale. He helped grew the company organically to a US$190 million value.
His awards include Most Accomplished Businessman for Fastest Growing Company in Sweden,; Co-winner with the CEO of Volvo AB of Chalmers University of Technology Daleen Prize and Entrepreneur of the Year. He has been selected to speak in capacity of VR expert to the Asian Leadership Conference in 2015 and 2016.
Lejerskar holds dual Masters of Science degrees in Mechanical Engineering and Computer Science from Chalmers University of Technology, Gothenburg, Sweden.