Joining of new govt job after hiding old central govt job a

Sir. I am currently working in central govt job as JE from april 2018. I have applied for state govt jo as AE in 2013, the exam for the same was held in april 2016 and the interview was conducted on march 2019, at the time of interview i hide my current job. Now i am finally selected as AE in state govt. What should i do, weather disclose at the time of joining or just hide. Please suggest