Founder of Maximum Media, Niall McGarry, has stepped away from all executive responsibilities of its Irish business.
The move comes after recent controversy relating to what the company described as an "audience delivery incident" two years ago.
Media reports said that listenership figures on some sponsored content were inflated by the use of a 'click farm'.
A 'click farm' is where a large group of people are hired to click on paid advertising links to boost the figures.
Mr McGarry remains a shareholder in the business and will be involved in the UK operations.
He launched Joe.ie in 2010 and has added several more brands, including SportsJoe and Her.ie, with the company expanding into the UK in recent years.
In a statement, Maximum Media said: "Continued appraisal of Maximum Media's operating structures have shown that there is a requirement for greater controls."
It announced a number of changes to its management positions.
It said: "Effective immediately, Justin Cullen will take up the newly created role of Executive Chairman, taking greater oversight of business strategy, structure and operations.
"As part of this management change Niall McGarry will be stepping down from all executive responsibilities in the Irish business.
"Niall remains a shareholder and will be heavily involved our UK operation.
"Day-to-day executive management of Maximum Media will be the responsibility of Chief Commercial Officer, Gillian Fitzpatrick, Chief Marketing Officer, Paul Dunkin, and Chief Financial Officer, Ronan Doolin.
"These three executives will report directly into the Executive Chairman.
"We are confident that with this new leadership structure will deliver the solidity and market confidence required to ensure the business can operate effectively and continue to innovate and grow.
"These structures will continue to be appraised to ensure that they are the best they can be, and should they develop further I will update you accordingly."