Bir Bahadur is involved in mountain tourism since he was age of 18 years. Born in Solukhumbu, he began his career as assistant trekking guide. As an assistant guide he trekked to almost routes of Everest region, Annapurna region, Langtang region and Kanchenjunga. As he has good expertise in trekking now he himself lead the groups as trekking guide. He has also taken one month training of trekking guide, altitude sickness, first aid and crisis management during trekking.