Mr. BB GURUNG completed his BA from National Defense Academy in Pune, India. He had received pre commission training from Indian Military Academy in Dehradun. He was commissioned in the Royal Bhutanese Academy as a 2 star Lieutenant in June 1980. However, he later took a premature retirement in 2007.

After retirement, he joined his wife's business. He is the promoter of the grocery 8 Eleven which was set up at Changlam in October 2006 and the grocery outlet in April 2009. In January 2011, he set up a Super Market below IMTRAT as an expansion to his existing business. Currently he is also exporting Cordyceps.

In 2007, He started a Cement Agency along with two other partners in Puna Tsangchu. Around the same time, he was also dealing in B-Mobile voucher distribution near Clock Tower, Thimphu. In 2009, he had set up a mobile phone and accessory outlet at Hongkong Market in Thimphu. He is also a Real Estate agent.