The caretaker boss guided the Terriers to their first win of the season by beating Reading 2-1 at the Madejski Stadium, but he claims that he is preparing to return to his role with the academy.
"No, I don't want the job," Lillis told reporters. "I'm the academy manager. I've been doing it for two-and-a-half years now.
"Ok, when you get nights like tonight, you get that little buzz again, and you think, 'You know what, I wouldn't mind a bit of this'.
"I'm just so pleased that we as a club have moved on tonight. We needed those points on the table especially after our first two league defeats of the season."
Huddersfield host unbeaten Charlton Athletic on Saturday afternoon.