ASC’s Executive Team is responsible for implementing the company’s Corporate Strategy, which is focused upon delivering exemplary submarine sustainment and capability support to the Collins Class fleet; attracting, retaining and growing an expert workforce; enhancing the company’s cost and transformational culture; and building Australia’s sovereign capability.

Stuart Whiley
Stuart Whiley
Stuart was appointed Managing Director and Chief Executive Officer (CEO) of ASC in February 2018, after holding the position of Interim CEO from July 2014.
His career at ASC spans more than 30 years, during which time he has undertaken various submarine program, projects, schedule and systems engineering roles. In 2005, he was appointed General Manager Collins Class Submarines and became responsible for the delivery of Collins Class submarine support services in both South Australia and Western Australia.
Prior to immigrating to Australia from the UK in 1988, Stuart held a number of engineering roles at BAE, Admiralty Research Establishment and Dowtys working in a naval/weapons environment.

Paul Gay
Paul Gay
Paul is responsible for overseeing all aspects of ASC's Collins Class related work, including sustainment, Life-of-Type-Extension (LOTE), submariner training and future planning.
Paul has over 20 years’ experience in naval platform acquisition and sustainment, commencing his career during the ANZAC Frigate Program with Tenix Defence (later BAE Systems) in 2001 and advancing to become the Platform Systems Engineering Manager for Australia’s capital ships, the Landing Helicopter Docks (LHDs). During his tenure, Paul was involved in all aspects of construction, structural, hot outfit, equipment load outs, consolidation, cold outfit and set to works, also overseeing the systems engineering process for the LHD platform, working closely with Navantia.
Paul joined ASC in 2010 as General Manager – Air Warfare Destroyer Project and moved to the submarine business in 2014. Working with Enterprise partners, he led ASC’s implementation of the Coles Review recommendations, including successfully completing the first two year Full Cycle Docking - a cornerstone achievement for the company.

Christian Hamilton
Christian Hamilton
Christian is responsible for executing ASC's company strategy, including addressing the full achievement of the Sovereign Shipbuilding Talent Pool.
Prior to this role, Christian was the Executive Manager Strategy and Communications, responsible for developing ASC’s Corporate Strategy, managing the annual strategic planning process and developing contingency plans to address emergent risks and opportunities.
Christian has also held positions in strategy, human resources and organisational development with a focus on developing ASC’s strategic framework and enhancing business performance through organisational design, alignment and accountability.
Prior to joining ASC in 2011, Christian spent 14 years in the Australian Army where he held various command and leadership postings including operational tours of East Timor, Iraq and Afghanistan.

Ashley Menadue
Ashley Menadue
As the Chief Financial Officer, appointed in April 2015, Ashley Menadue is responsible for the overall financial strategy and direction of ASC Pty Ltd inclusive of accounting, audit, tax, treasury, corporate finance and shareholder relations.
Ashley provides the Board and Executive with financial oversight of ASC, ensuring compliance with statutory requirements, whilst developing financial strategies and executing the long-term financial success for the ASC Group.
Ashley also maintains a multi-departmental role within ASC, leading Finance as well as the Legal and Risk & Assurance functions.
Prior to his role at ASC, Ashley was the Financial Controller for ASC Shipbuilding (then part of the ASC Group), which saw him work closely with ASC Shipbuilding management to oversee the financial performance of the Air Warfare Destroyer program.
Ashley has held a number of senior-level positions over a career spanning 30 years, these include 16 years working in senior executive and corporate finance roles within BAE Systems Australia and auditing experience within KPMG.

Joanne Horne
Joanne Horne
Joanne is responsible for ASC’s People and Culture functions and strategy across all business areas, and is the senior ASC executive in Western Australia.
Joanne has a wealth of experience in heavy industrial environments and working across geographically diverse locations. She has more than 13 years’ experience in people and culture strategy and operational human resources execution, including five years as General Manager, with Caterpillar dealer, WesTrac.
Prior to joining ASC in 2018, Joanne provided consulting services to a range of businesses including mining company South32.

Alex Walsh
Alex Walsh
Alex Walsh is a degree qualified nuclear engineer who brings close to 40 years’ experience in the nuclear submarine and power sectors to his role heading ASC’s submarine engineering capability.
Alex joined ASC in January 2022 from Sellafield Limited, the UK government entity that manages its Sellafield nuclear site. He commenced with Sellafield as Executive Project Manager leading a complex nuclear project, before moving on to other leadership roles ahead of his most recent role, as Head of Planning Implementation.
With senior expertise in engineering, project management and managing nuclear commissioning, safety and licencing, Alex has worked in the UK, France and Australia. At BAE Systems his roles included Head of Nuclear Construction (leading the team constructing the Astute reactors) and Head of Nuclear Safety Engineering (leading nuclear authorisation and the safety case for Astute fuelling, commissioning and power range testing).
Alex previously worked at ASC in 2013 and 2014, as General Manager Engineering.

Rebecca Livesey
Rebecca Livesey
Rebecca joined ASC in 2019 and is responsible for leading its Transformation agenda. For over 20 years she has worked in strategy and leadership roles across Australia and the United Kingdom, leading and facilitating transformation in organisations such as WesTrac, MEC Mining, Aurizon, CS Energy, Westpac, E.ON, and RACQ. She specializes in linking leadership, strategy and culture to drive transformation in organizations.
With a MA in Mathematics from Oxford University, Rebecca brings to the table extensive expertise in strategy development, organisational transformation, decision making frameworks, leadership patterns, behaviour profiling, culture change models and facilitation. She has run her own business as well as held executive roles within organisations, and so recognises the need to be agile and lean in approach.
Rebecca is recognised as a thought leader in organisational leadership and culture and is well-regarded as a professional speaker with a passion for people and diversity.

ALASDAIR STIRLING
ALASDAIR STIRLING
Alasdair oversees ASC’s advisory function in regards to capability development for the design, construction and sustainment of nuclear-powered submarines.
Alasdair joined ASC in November 2022. His career includes senior roles with the Royal Corps of Naval Constructors in the United Kingdom, and extensive experience working on nuclear-powered submarines, including as engineering and program authority for the Astute Class submarines (design, build and support); in-service sustainment of the Swiftsure, Trafalgar and Vanguard Classes; and design and build of the Dreadnought Class. These roles involved working closely with United States government authorities.
Alasdair also has industrial experience as Managing Director of Babcock Submarine Support Engineering, and Director of Engineering for the Babcock nuclear sector - which includes civil and naval nuclear engineering.
Alasdair is a Chartered Engineer and Chartered Project Professional.

Peter Tromans
Peter Tromans
Peter is responsible for supporting the successful execution of the Collins Class Submarine Life of Type Extension (LOTE) project.
Peter has over 30 years’ defence industry experience, including more than 25 years working on two of Australia’s most complex naval programs, the Collins Class submarines and Hobart Class destroyers. He held engineering roles in the design, construction and sustainment phases of the Collins Class submarines prior to taking on his current role, most recently as Executive Manager of Engineering.

Ivan Witt
Ivan Witt
Ivan was appointed General Counsel and Company Secretary of ASC in November 2019. As Company Secretary, he is responsible for the efficient administration of the company and its subsidiaries, particularly in relation to corporate governance, regulatory compliance and for ensuring that decisions of the Board of Directors are implemented.
In his General Counsel role, he is responsible for the provision of strategic legal advice to management and the leadership of the commercial legal team including export controls and workers' compensation.
Prior to joining ASC, Ivan's career has spanned the shipping, transport, logistics, hospitality and resources industries. Additionally, he is a serving Captain in the Royal Australian Naval Reserves.

Ben Pudney
Ben Pudney
Ben was appointed to lead ASC’s Supply Chain in 2015, joining the company as an experienced procurement and supply chain leader with international experience in defence, mining and management consulting.
Ben is responsible for leading ASC’s internal supply chain capability and the management of an external supply chain of more than 1,200 suppliers, supporting ASC’s programs. He is also a former executive sponsor of ASC’s diversity and inclusion program.
Prior to joining ASC, Ben held senior roles with companies including BHP Billiton, Accenture UK and Linfox.

Mark Albertson
Mark Albertson
Mark joined ASC as Executive Manager Operations in April 2021, bringing significant experience in operational leadership, health and safety, cultural improvement and delivery in Australia and internationally.
Mark is responsible for the Operations, WHSE, Planning, Facilities and Security teams, including the Collins Class production workforces in South Australia and Western Australia.
Prior to joining ASC, Mark held senior leadership roles in various complex industries and operational environments. These included Global Director Asset Management, Newmont (mining); Executive General Manager Operations, CS Energy (power generation); General Manager, Callide Power Station (power generation); Operations Manager, Century Mine (mining) and Operations Manager, Rylson Consulting (asset management).
Mark commenced his career in aviation maintenance engineering with the Royal Australian Navy.