CIMIC Group executive leadership team

  • Juan-Santamaria

    Juan Santamaria

    Executive Chairman and Chief Executive Officer, MEng (Civil)
    Appointed Executive Chairman on 6 November 2020 and appointed Chief Executive Officer and Managing Director on 5 February 2020. Juan was formerly Managing Director of CPB Contractors (CIMIC Group’s construction business), with responsibility for CPB Contractors, Leighton Asia and Broad in all geographies, including Australia, New Zealand, Papua New Guinea, India and Asia.
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    Prior to that, Juan held roles as the Managing Director of UGL (CIMIC Group’s services business) and Executive General Manager Public Private Partnerships and Construction West at CPB Contractors.

    He was Chief Executive Officer of Iridium (an ACS Group company) between 2014 and 2015; and was Chief Executive Officer and Chief Operating Officer of ACS Infrastructure North America and Canada between 2006 and 2013.


    Juan holds a Master of Science in Civil Engineering from the Polytechnic University of Madrid and has held a variety of positions in the construction industry during the past 20 years.


    He has extensive international experience in the delivery of large and complex construction, services and PPP projects and has been responsible for projects and businesses in Australia, Europe, North America, Latin America and South Africa.

  • Ignacio Segura

    Ignacio Segura

    Deputy Chief Executive Officer and Chief Operating Officer, MEng (Civil) 
    Appointed Deputy Chief Executive Officer and Chief Operating Officer in 2018. Ignacio was formerly the Chief Executive Officer of Dragados (2012-2017), an ACS Group company.
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    Ignacio joined ACS Group in 1999 and held roles including General Manager of Galicia in ACS Proyectos, Obras y Construcciones (1999-2004), Executive General Manager for Building In Spain of Dragados (2004-2006), and Managing Director of Dragados (2006-2012).

    Ignacio is a civil engineer with 27 years of international experience in the construction sector.

  • Craig Byrnes

    Craig Byrnes

    Chief People and Culture Officer, MBus&Com (Corporate Admin), BCom (HR &IR)
    Appointed Chief People and Culture Officer in November 2020. Craig was formerly UGL’s Executive General Manager People.
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    Prior to that, Craig held positions as General Manager, People at Thiess and General Manager, Human Resources at John Holland. 


    Craig has held several other senior positions in people management and industrial relations and has demonstrated experience across many sectors including services, mining and construction.


    With more than 15 years’ experience, he has led teams to deliver award-winning work. He holds a Master of Business and Commerce majoring in Corporate Administration and a Bachelor of Commerce majoring in Human Resources and Industrial Relations.

  • Stuart-Charlton - Leaders - CIMIC

    Stuart Charlton

    Executive General Manager Internal Audit, FCA, BA (Joint Hons)
    Appointed Executive General Manager Internal Audit in December 2019. Stuart was previously Chief Financial Officer of CPB Contractors.
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    Prior to that, Stuart’s career within CIMIC Group has spanned 13 years, including Executive General Manager, Finance, CIMIC.

    Stuart was integral to the successful execution and integration of CIMIC’s strategic business acquisitions, as well as the transformation of its internal Finance capability. 

    Prior to joining our company, Stuart worked at KPMG in London and Sydney.

    He is a Fellow Chartered Accountant and holds a Bachelor of Arts Joint Honours degree.

  • Michael Cooper

    Michael Cooper

    General Counsel, BCom (UNSW), LLM (UTS)
    Appointed as General Counsel in March 2022. Michael was formerly CIMIC’s Senior Legal Counsel.
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    A senior corporate and commercial lawyer with more than 15 years' experience, Michael joined CIMIC in 2015. Michael is also an Alternate member of the Board of Directors of Thiess and Ventia. Prior to joining CIMIC, Michael held roles at international law firms both in Australia and the UK.

    Michael holds a Bachelor of Commerce from the University of New South Wales and a Masters of Laws from the University of Technology, Sydney.
  • Robert Cotterill

    Robert Cotterill

    Executive General Manager Strategy, Mergers and Acquisitions, B.Eng (Hons), MCom
    Appointed Executive General Manager Strategy, Mergers and Acquisitions in April 2019. Robert was formerly General Manager Mergers and Acquisitions.
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    Robert has held various positions within the CIMIC Group since 2007, including in CIMIC Group’s acquisition of UGL, the creation of Ventia and sale of John Holland, as well as being involved with various private financing and public private partnership infrastructure transactions. He also holds a position as a Director of Ventia. 
    Robert holds a Bachelor of Engineering (in environmental engineering) with Honours and a Master of Commerce from the University of NSW. 
  • Emilio Grande, Chief Financial Officer

    Emilio Grande

    Chief Financial Officer
    Appointed Chief Financial Officer in January 2021. Emilio has worked with CIMIC Group since 2018, having held roles as Chief Financial Officer of UGL and Deputy Chief Financial Officer of CIMIC.
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    Prior to that, Emilio served as Chief Financial Officer of Iridium (a leading global infrastructure developer in the PPP space). 


    Emilio has 15 years of international experience across banking and infrastructure in various finance roles. He holds Bachelor’s degrees in Law and Business Administration.

  • Justin Grogan

    Justin Grogan

    Executive General Manager Investor Relations and Sustainability, BCom, MBA  
    Appointed Executive General Manager Sustainability and Investor Relations in 2019. Justin was formerly Executive General Manager Sustainability.
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    Justin joined CIMIC Group in 2000 and was appointed an Executive General Manager in 2009. He has extensive experience in corporate affairs responsibilities including investor relations, crisis management and corporate communications.


    Justin is a graduate in commerce from the University of Western Australia and has a masters of business administration from the University of Sydney. 

  • Lyn Nikolopoulos CIMIC Company Secretary

    Lyn Nikolopoulos

    Company Secretary, BBus, FGIA, FCG
    Appointed Company Secretary in June 2017. Prior to the CIMIC appointment, Ms Nikolopoulos was Company Secretary of UGL since October 2006.
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    Ms Nikolopoulos has a Bachelor of Business from the University of Technology Sydney and holds a Graduate Diploma in Applied Corporate Governance from the Governance Institute of Australia. 

    She is a fellow of the GIA and has over 21 years’ experience in a company secretary role. 

    Ms Nikolopoulos is also the company secretary of a number of subsidiaries across the CIMIC Group.
  • George Sassine

    George Sassine

    Executive General Manager Investment and Group Property, Bachelor of Building UNSW (Hons), GAICD
    Appointed Executive General Manager Investment and Group Property in January 2016. 
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    George previously held positions within CIMIC Group including Executive General Manager Corporate Advisory and Group Property, and General Manager Corporate Advisory. 

    He holds an honours degree in building from the University of NSW.
  • Fiona Tyndall

    Fiona Tyndall

    Executive General Manager Corporate Affairs and Communications, LLB, BA, GAICD
    Appointed Executive General Manager Corporate Affairs and Communications in 2021. Fiona was formerly General Manager Corporate Affairs and Communications.
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    Fiona joined CIMIC Group in April 2013. She was previously Head of Asia Pacific Communications at BlackRock in Hong Kong.


    Prior to that Fiona was Media Relations Manager at Macquarie Group. She was formerly a journalist with the Australian Financial Review. Fiona has a Bachelor of Laws and a Bachelor of Arts in English and Linguistics.

  • Pedro Vicente

    Pedro Vicente

    Executive General Manager Operations, MEng, ICCP
    Appointed as Executive General Manager Operations in March 2022. Pedro was formerly Managing Director of Leighton Asia.
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    Pedro joined Leighton Asia in 2015 as Executive General Manager South East Asia and India. He has over 22 years of international experience in the general contracting industry throughout North America, Europe, Australia and Africa.

    Prior to joining Leighton Asia, Pedro held key management roles in international construction company, ACS Group, and its subsidiaries. His roles included Dragados S.A. as Project Director, and Area Manager and Director; Dragados Canada as Executive Vice President and Operations Manager; and Dragados Australia as Executive General Manager, Director and Secretary. 

    Pedro holds a Master in Civil Engineering from the Universidad Politecnica de Madrid, Spain and is a member of the Spanish Association of Civil Engineers.
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