The former West Ham United youth bagged the two goals in City's 2-0 win over Keith Long's side, and feels that he is thriving in the lone striker role after joining from Dundalk in the off-season.
"Before the game, I would have taken three points and no goals, but scoring two goals in the 'Shed End' on my debut is just a bonus, so I'm delighted," Maguire told reporters.
"Coming here, there was a bit of pressure, but I think scoring in the past couple of games has given me confidence and hopefully I can just kick on from here."
The Republic of Ireland Under-21 international added: "I worked really hard in pre-season and John [Caulfield] has shown faith in me, playing me up front on my own with Gav [Holohan] and we've formed a good partnership, we know each other really well."
FOX IN THE BOX
Cork manager John Caulfield was impressed by his new acquisition, who has continued his goal-scoring start at Turner's Cross after finding the net in the President's Cup win over Dundalk last week.
"It might be a rejuvenated Seanie Maguire and that's what we want," Caulfield told reporters after the game.
"It was two 'fox in the box' finishes in a game that was tight and I suppose they were goals out of nothing, which is a credit to Sean.
"Since he's come in, his work rate and attitude have been phenomenal. If he keeps working like that, he'll score goals and that's what we want."