Larsson is the Founder of CTO LARSSON, a role he has held since 2019. Prior to this, he dedicated two decades to the development of emerging mobile technologies, including 2G, 3G, 4G, 5G, and IOT, across 10 different countries for Ericsson Group. During his tenure at Ericsson, he held various CTO roles and served as Vice President for Mobile Broadband in Southeast Asia & Oceania, a position that involved billions of dollars in yearly sales responsibility.