I have asked a similar type of Question before as I wanted to leave Canada and stay in home country for a while. I also talked to 2 immigrant consultants about it.
The Advice I have been given was not to leave Canada for so long, more than one month is considered a long time. And nowadays they may ask more stringent interview questions and might question for the time while is being away for a long time, eg, shown on the passport stamps - exit and entry etc.
Not working in Canada is not a concern but working overseas may show the officers your intention is not to live and work in Canada in the future- especially you left Canada right after Citizenship application and already got employed overseas.
This is just my 2 cents, hope it helps a bit. Well, in the end, they might not question anything with respect to travel records or work etc.
Best of Luck to you and your family. Cheers.