Investor Centre


Senior Leadership Team

Nuix has an experienced Senior Leadership Team, led by CEO Jonathan Rubinsztein. Jonathan is supported by a number of skilled and knowledgeable personnel, who together have extensive experience in the Nuix business and the technology and software industry. Members of Nuix’s Senior Leadership Team have previously worked in key customer industry verticals and have a strong understanding of customer needs.

Rod Vawdrey



Jonathan is a seasoned CEO with a track record of building world class global technology companies and leading high-performance teams in the technology sector.

Previously, Jonathan was Managing Director and CEO of Infomedia, Ltd, an ASX-listed SaaS company.

Prior to that role, Jonathan was CEO and founding shareholder at UXC Red Rock Consulting, where he was instrumental in growing the business from a start-up to over 700 people across 13 offices in Australia, New Zealand, India, and Singapore.

Jonathan was also a Founder and Director of RockSolid SQL, a company that built monitoring and automated data management software for over 18,000 databases globally.

Chad Barton

Chad Barton

Chief Financial Officer

Chad joined Nuix as Chief Financial Officer in June 2021. Chad has extensive experience in managing large and complex finance operations having previously been the Chief Financial Officer of ASX-listed companies, The Star Entertainment Group Limited and Salmat Limited. Prior to this, he was Chief Financial Officer of global technology business, Electronic Data Systems (EDS) in Australia and New Zealand.

Chad is also Non-Executive Director of ASX/NZX listed SkyCity Entertainment Group, a member of the Institute of Company Directors, a member of the Institute of Chartered Accountants and has been a committed supporter of a number of important not-for-profit causes, including as a Non-Executive Director of Neuroscience Research Foundation Australia (NeuRA Foundation) and previously the Chairperson of Women in Gaming & Hospitality Australasia.

Danny Pidutti

Danny Pidutti

Chief Product Officer

Danny joined Nuix as Chief Product Officer in April 2018 and is responsible for developing and coordinating the delivery of Nuix’s product strategy.

Danny was previously Vice President, Product and Industry Marketing at Nuxeo, responsible for product and industry solutions strategy and the associated go‑to‑market. Prior to this, Danny held senior leadership roles with Dell and EMC.

Danny holds a Bachelor of Information Technology/Engineering and Computer Science from the Australian National University.

Paul Keen

Paul Keen

Head of Engineering

Paul joined Nuix as Vice President of Engineering in April 2020 and is responsible for all the Company’s engineering teams and related activities across Nuix.

Paul’s previous roles include as the Head of Group Architecture and Engineering  at Qantas, Chief Technology Officer at Airtasker and Chief Information Officer at  Dick Smith Electronics. Prior to these experiences, Paul was a General Manager in Salmat’s Software Development team and a General Manager of Technology and Development at RedBalloon.

Paul holds a Master of Business Administration from Macquarie University (Macquarie Graduate School of Business).

Stephen Stewart

Stephen Stewart

Chief Technology Officer

Stephen joined Nuix as Chief Technology Officer in October 2008. Stephen is  responsible for shaping Nuix’s product strategy by working closely with customers to improve existing use cases.

Stephen was previously a Director of eDiscovery Services at RVM Enterprises, a principal at ESI Strategies, as well as having worked as a Subject Matter Expert (Archiving and Discovery) at CommVault and Consulting Product Manager at EMC for SourceOne/EmailXtender.

Stephen holds a Bachelor of Environmental Science from the University of Virginia.

David Sitsky

David Sitsky

Engineering Founder and Chief Scientist

David led the founding team which first conceptualised Nuix in the early 2000s with the development of a program to make unstructured data searchable and which was acquired by the Company in 2005. Since this time, David has served a number of roles at Nuix, including as Chief Engineer and Head of Development. Since 2018, David has led the research and development efforts at Nuix as Chief Scientist.

David was previously a software engineer with Cisco Systems and the Computer Science Department at the Australian National University.

David holds a Bachelor of Science with First Class Honours in Computer Science from  the Australian National University, where he was also awarded a university medal for academic achievement. 

Bill Adams

Bill Adams

Head of Nuix Discover

Bill joined Nuix in September 2018 as part of the acquisition of Ringtail software from FTI Consulting. Bill is now responsible for Nuix Discover (formerly Ringtail) at Nuix.

Bill was formerly a Senior Managing Director at FTI Consulting and has extensive experience with the Nuix Discover (formerly Ringtail) software, having worked at  FTI for over 20 years.

Bill holds a Bachelor of Arts, Political Science and Government from Northwestern University and a Juris Doctor from George Mason School of Law and Economics.

Melissa Pascoe

Melissa Pascoe

Head of Human Resources

Melissa joined Nuix in July 2020 as Vice President of Human Resources and is responsible for managing a global team that provides human resources support to Nuix employees.

Melissa was previously a Global HR Director at Macquarie Group, where she managed a global team providing HR support to over 3,500 people. As a member of several senior leadership teams, Melissa provided strategic HR advice and coaching to the senior executives and their leadership teams.

Melissa holds a Bachelor of Financial Administration from the University of New England and is a member of the Institute of Chartered Accountants Australia. 

Sarah Nichols

Sarah Nichols

Director of Corporate Development and Strategy

Sarah joined Nuix in 2016 as Strategic Program Manager and was appointed Head of Corporate Development and Strategy in November 2019. Sarah is responsible for evolving the Nuix business growth strategy and model, distilling complex high‑volume data and ideas into Board/Executive level decision making tools and setting up, monitoring and supporting critical business optimisation initiatives for success.

Sarah was previously a Senior Manager at Detica (now BAE Systems) and a Senior Business Analyst at SHL Direct (now Gartner). Sarah holds a Master of Arts from the University of Oxford.

Ethan Treese

Ethan Treese

Executive Vice President, Americas

Ethan joined Nuix in September 2016 and is responsible for sales and revenue in the North America region.

Ethan was previously Senior Vice President and Global Head of Sales – Customer Solutions at Dun & Bradstreet and was appointed a Director of Bright Focus Foundation in April 2016.

Ethan attended Lehigh University in Pennsylvania. 

Jonathan Rees

Jonathan Rees

Executive Vice President, International

Jonathan joined Nuix in November 2016 and is responsible for sales and revenue in the EMEA region.

Jonathan was previously employed as Senior Vice President, Enterprise Solutions  at Western Union and prior to this, held leadership roles at M‑Cube Media Ltd and Vivante, France.

Jonathan holds a Bachelor and Masters of Science from the University of Wales. 

Rolf Krolke

Rolf Krolke

Head of Technology Services

Rolf joined Nuix as Head of Solution Consulting, Support and Cloud Operations in March 2018, and in June 2019 was appointed Head of Technical Services where he is responsible for pre‑sales, deployment and support.

Rolf previously served as Head of Cloud Support Engineering, APAC at Amazon Web Services. Prior to that, Rolf held leadership positions at Dell and Microsoft.

Rolf holds a Bachelor of Information Systems from the Australian Catholic University and a Masters of Management from Macquarie Graduate School of Management.