Klaus Bartosch has formally resigned as CEO and managing director of Australian digital health group 1st Group.

1st Group operates the health services marketplace MyHealth1st.com.au and telehealth platform Visionflex, which it acquired early this year.

In a statement, Bartosch, who helped co-found the company over a decade ago, said that while it has been a difficult decision, his resignation is "the right one for me personally and the right time for the company to move forward under new leadership as it enters its next phase of growth and development."

"The Board thanks Klaus for his dedication and passion [in] leading 1st Group, which he has done since co-founding the business. He has helped position 1st Group with a great management team, a high-quality customer base and new opportunities for growth. We wish him well with his next ventures," said 1st Group Chair Stephe Wilks.

Josh Mundey, who was appointed as Chief Revenue Officer in July, will replace him as acting CEO until the company's board undertakes an international search for the position.

"As a shareholder and someone who is passionate about the business, I remain available to Josh and the team to ensure a smooth and successful transition. We have great customers and I am confident this next chapter for the Company will see it go from strength to strength," Bartosch commented.

THE LARGER TREND

Bartosch's resignation came over a year since he was reinstated as CEO of the company in June last year. Two months before that, he was replaced by Louise McElvogue as part of a restructuring.