Lasonexay is a member of the Lao Bar Association and is head of the Regulatory and Compliance team in Vientiane.

He regularly supervises corporate matters, including company establishment, investment applications and other filings as well as providing general market entry legal advice to foreign investors.

Lasonexay received his Bachelor of Laws (LL.B.) from the National University of the Lao PDR and Master of Laws (LL.M.) from Yokohama National University, Japan.