Senior Executive Team
President & CEO
Rob Sisk was appointed President and CEO of Penske Power Systems on 14 February, 2011 and subsequently was appointed member and Chairman of the Penske Power System Board of Directors.
Rob relocated to Australia from the United States, where he held leadership roles of steadily increasing responsibility at Detroit Diesel Corporation and United Technologies Corporation.
Immediately prior to joining Penske Power Systems, Rob was Senior Vice President at Atlantic Detroit Diesel Allison and had profit and loss responsibility for the off-highway business and operational responsibility for half of the company’s on- and off-highway branch locations.
He restructured ADDA’s off-highway operations with a focus on teamwork, added sales and project management staff, mapped processes and established performance metrics – resulting in significant revenue growth and operational improvements. Under his leadership, ADDA established new all-time product sales records in 2007, 2008 and 2009 and received MTU’s overall “Distributor of the Year” award in 2009.
Rob holds a Bachelor of Science in Mechanical Engineering from Rice University and completed requirements for a Bachelor of Arts in French, having studied at the Sorbonne in Paris, France. During his 37-year professional career, he has lived and worked in Indonesia, India, Saudi Arabia, France, the United States and Australia.
Rob is active in volunteer work both in Australia and the United States and regularly participates in charity events including the St Vincent de Paul Society’s CEO Sleepout and the Boston and Melbourne Marathons.
Chief Operations Officer
As Chief Operations Officer, Jim Livermore is responsible for Penske Power Systems’ comprehensive branch network operations, incorporating off-highway product and technical support, as well as all operations business improvement functions.
Jim is active in developing new business opportunities that build on customer relationships, driving efficiency and profitability for the business by setting challenging targets. Together with his team, Jim frames strategies to achieve goals based upon the sharing of best practice across Penske Power Systems’ operations network.
Continuously working to expand the technical capabilities of his team to mirror advancements in Penske Power Systems’ world-class product portfolio, Jim is focused on delivering customer service excellence that’s both sustainable and profitable.
As an active member of the Executive team, Jim has provided guidance and direction for Penske Power Systems’ viability, in line with its vision and guiding values, for several years now.
Jim holds an Associate Diploma in Electrical Engineering and a Post Graduate Diploma in Business Management, and is currently an active member of MTU’s International Mining Council. He has previously served as the President of the NSW Superyacht Industry association (2009/10) and a committee member of the Australian Superyacht association (2011/13).
He joined Penske Power Systems in October 2001 as Branch Manager, Hunter Valley and has previously worked for: Komatsu Australia Pty Ltd, General Electric Industrial Systems, Hamersley Iron Pty Ltd.
Chief Financial Officer
John Zappia was appointed Chief Financial Officer on 2 December 2014, and is an integral part of the company’s long term sustainable business strategy under the Penske Automotive Group shareholdership. His responsibilities lie within the company’s financial operations and planning, as well as credit, accounts, treasury, procurement and risk and compliance.
John’s tenure with Penske Power Systems spans more than two decades, over which time he’s held various leadership roles, notably in the areas of finance, procurement, legal and compliance. He has been a member of the Executive team since 2006, Secretary for the Board of Directors since 2003 and is currently a Public Officer on the Board of Directors.
In 2010, John assumed responsibility for all corporate service functions, including human resources, training, IT, compliance, procurement, health safety & environment, and risk & compliance. In July 2013, John was promoted into dual roles, Chief Supply Chain Officer & Chief Information Officer, where he led the company-wide supply chain transformation project.
Over his tenure, John has successfully implemented Penske Power Systems’ Nova Project (2006-2009), the business strategy tasked to both improve and maintain best practice. John led the 2001 DDAA and MTU-A merger, as well as Penske Power Systems 2002 centralisation of finance functions. In 2012, John guided the company reorganisation project, encompassing the roll out of a new corporate vision, as well as values and behaviours.
John is a member of the Certified Practicing Accountants of Australia, National Institute of Accountants, as well as Chartered Secretaries Australia.
Hamish Christie-Johnston joined Penske Power Systems in August 2014 as Chief Sales Officer and Executive Team member responsible for leading our off-highway segments, including the engineering and marketing functions.
With broad experience working with global OEMs for most of his career – across the fields of industrial sales and marketing, as well as equipment and asset management within the mining, construction and power systems industries – Hamish has a strong understanding of the markets that we operate in.
Hamish maintains a far reaching and customer-focused vision for the business and believes that successful outcomes result when we understand and respond quickly to the needs of our customers. He has a successful track record developing teams and implementing improved processes based on this philosophy.
Likening his role to that of a coach – ensuring that his team has the understanding, skills, and execution required to drive successful outcomes – Hamish has deep business planning experience within our markets, as well as strong leadership, communication and relationship-building skills.
Hamish holds a degree in Mechanical Engineering from Melbourne University, as well as MBA qualifications.
Kevin Dennis was appointed to head up our extensive on-highway business and dealer network on 20 October, 2014; with responsibilities including the management of all Australia Pacific on-highway sales and dealer development, as well as product and technical support functions.
We lean on Kevin’s customer- focussed and inclusive management style, strong business acumen and leadership, as well as his in-depth knowledge of the truck and engine market, cultivated over 30 years’ of global experience, to further enhance our operations.
As a previous member of the Penske Power Systems team – holding various roles from 2011-2013 including Branch Manager – Victoria and Tasmania, Group Manager Off-Highway Markets, and Market Development Manager – C&I and Rail – Kevin has a proven track record of developing our market share and capitalising on growth opportunities.
Kevin plays an integral role in the continued expansion of our on-highway business in Australia and New Zealand, providing support to our comprehensive branch network, while meeting the needs of our on-highway dealers and customer base.
With a wealth of experience in the on-highway space, Kevin has cemented his capabilities in global senior management roles with Detroit Diesel Corporation, Daimler Trucks North America, and most recently at Navistar International, representing CAT Trucks’ brands throughout Australia-Pacific, with roles including Managing Director and before that, General Manager of Sales and Marketing.
Kevin is a current Executive Board member to the Truck Industry Council (TIC), an independent organisation that represents the united views of truck manufacturers, importers and diesel engine companies.