The co-founder of $3.5 billion Australian software company Atlassian has moved to calm talk of an imminent public listing, saying the company would not be rushed into an initial public offering and could remain ­privately held ­indefinitely.

Speculation about a public listing for the company, which makes tools for software developers, has ­intensified in the past year as the ­company shifted its corporate headquarters to London and added Silicon Valley heavyweights to its board.