Nuix CEO steps down

Australian investigative analytics and intelligence software provider Nuix has announced that CEO Jonathan Rubinsztein is stepping down at the end of the month.

Rubinsztein has served as CEO since December 2021.

Prior to that, he was CEO and MD of Infomedia, an ASX 300 listed global provider of SaaS solutions to the parts and service sector of the automotive industry.

John Ruthven will take over as interim CEO from 3 November 2025.

Ruthven’s most recent role was CEO and MD of fellow ASX-listed company Integrated Research Limited from July 2019 to October 2024.

Prior to that role, his career has entailed senior leadership roles across the Australian and global software and IT services industries including with Technology One and more.

Ruthven’s appointment is for a period of up to 12 months whilst the company undertakes a full global search for a new permanent CEO.

Nuix’s chair Robert Mactier said Rubinsztein joined Nuix at a time when Nuix was under pressure from a range of external events and at what was an important juncture in the company's development.

"Under his leadership, the Nuix team have restored stability and confidence while transforming the business and delivering Nuix’s current strategic direction and sharper focus," he said.

"The Board is very appreciative of Jonathan’s contribution and commitment to the evolution of the company, his passion for Nuix’s people and products and his strategic leadership during his time with Nuix.

"With the company on a solid footing and well positioned for growth, the Board and Jonathan have agreed that it is now the right time to seek new leadership for the next leg of our growth journey. We collectively wish Jonathan well in his future endeavours.”

Rubinsztein said he feels proud and privileged to have led "such an incredibly talented team of gifted people" at Nuix over the past four years.

"Together we have achieved much – a complete turn-around of the business from corporate structure to the development of our world-class platform Nuix Neo to earning confidence and support from our customers," he said.

"The company is perfectly poised for an exciting and successful future. I thank the Board for having given me the opportunity.”