The Magpies latest signing starred as they beat Chelsea 3-2 on Saturday, and said that they want to continue climbing the Premier League table.
Sissoko, who joined from Toulouse last month, also said the victory over Chelsea was a team effort.
"I am very happy, but we can't forget the fact that this was a team performance," he said.
"The team worked together. I played well, but it was a team effort.
"We came away with three points and I hope we can continue to perform like that to climb up the Premier League as high as we can."