*Club domestic league appearances and goals, correct as of 20:44, 28 February 2022 (UTC) ‡ National team caps and goals, correct as of 14 November 2017
Jairu hails from Gyalshing, West Sikkim and was spotted during the "Search for more Bhaichungs" scheme launched by the Government of Sikkim and was inducted into the Sports Hostel in Namchi. Later he moved to the Sports Academy of Sikkim at Gangtok and passed out in 2008 grabbing a contract with ONGC. After his stint at ONGC, he moved to Shillong and joined Rangdajied United. After spending a season there he signed for Mumbai Tigers with whom he had a fruitful outing, scoring a number of goals for the team in the 2013 I-League 2nd Division.[1]
On 23 June 2015 Jairu, along with Rahul Bheke (who coincidentally both played together for Mumbai Tigers in 2013) signed a season long deal with East Bengal.[5]
On 1 February 2018, Jairu scored the winning goal for Jamshedpur in a 2–1 victory over Mumbai City at the Mumbai Football Arena. He came on as an 81st-minute substitute and then scored three minutes later.[9]