With his incisive running lines and eye-catching distribution, Cairns has played a pivotal role in the positive results against Ulster and Ospreys at The Castle.
But he admits he is_expecting a battle to keep hold of his number 13 shirt when the club's international contingent returns to the Scottish capital following their heroics at the World Cup.
Cairns said: 'the guys have so far gelled superbly as a team and now the internationals are coming back as well which is a boost. They will find it hard to reclaim their places and there will be a real fight for spots in the starting line-up.
"We know that if we"re not playing well then we are going to get dropped. That is the way it should be at a professional side and that can only be good for the team."
After recording three starts, Cairns believes he has a thorough understanding of his role within the back division.
Now he has targeted a try-scoring performance against Dragons on Friday (12 October, kick off 7.30pm) to underline his importance to the men in black and red.
He said: "Personally it is good to be starting every week at 13. I would like to improve on my performances, although I feel I"m getting better every week.
"I would like to take that on, become one of the key men in the team and hopefully get a few tries as well.
"As a team, we weren't the best against Leinster, but we were definitely promising. So in the last few games we have taken that on.
"We"ve got a great team spirit at the moment. Everyone is working so hard for each other and, once we get the basics right, and keep the ball a bit longer we are going to be a big threat."
Friday Night Fever continues at Murrayfield - come and watch your team slay the Dragons at The Castle. Be a part of a club that is going places by booking your seats on our ticket hotline 0131 346 5180 or online at www.edinburghrugby.org