The victory helped FC Goa climb back to fifth place on the points table with 15 to their name, thanks to their third home win of the season in four games.
A first half strike from Dimitrios Diamantakos resulted in a fourth straight win for KBFC, while hosts Jamshedpur FC slumped to their fifth straight defeat.
A brace from Pereyra Diaz and strikes from Lallianzuala Chhangte and Alberto Noguera sealed the win for the hosts while Iker Guarrotxena was on the scoresheet for the Gaurs.
Buckingham applauded his players for the way they converted their chances while also heaping praise on the substitutes who made a crucial impact by netting the match-winning goals.
Despite going two-nil up, Thomas Brdaric felt that his side could not make the best out of it and felt that it was tough for them to bounce back after the second goal.
With the introduction of opportunities for promotion to the Indian Super League as per the Roadmap approved by the AFC, this season is also something of a new beginning for the I-League.