| Arthur Psaltis | Chief Executive | 1998 | 2024 |
| Judith Uren | Non-Executive Director | 2020 | 2024 |
| Tynan Luzuk | Project Leader, Structural | 2017 | 2024 |
| James Leiper | Associate, Structural | 2018 | 2024 |
| Matthew Callaghan | Technical Resource Manager, Civil | 2014 | 2024 |
| Andrew Bayley | Chief Operating Officer | 2005 | 2024 |
| Troy Oliver | Project Leader, Structural | 2017 | 2024 |
| Mark Riddell | Principal, Civil | 2018 | 2024 |
| Jamie De Palma | Associate, Civil | 2017 | 2024 |
| Fabio Otranto | Associate, Civil | 2017 | 2024 |
| Derek Smith | Project Leader, Structural | 2016 | 2024 |
| Alistair Eyres | Project Director, Structural | 2019 | 2024 |
| Philip Patterson | Project Director, Civil | 2011 | 2024 |
| Paul Syminton | Principal, Civil | | 2024 |
| Andrew Tucker | Principal, Urban Renewal | 2020 | 2024 |
| Chris Tyler | Chief Performance Officer | | 2024 |
| Cory Johnson | Principal, Civil | 2011 | 2024 |
| Gareth Jenkins | Principal, Northern Australia | 2017 | 2024 |
| Anthony Sims | Strategic Development Manager | 2012 | 2020 |
| Thomas Crocker | Project Leader, Transport | 2017 | 2019 |
| David Sidie | Manager, Northern Territory | 2016 | 2019 |
| Jason Wallis | Structural Modeller | 2019 | 2019 |
| Andrew Tucker | Technical Director, Civil | 2017 | 2019 |
| Alistair Eyres | Associate, Structural | 2017 | 2019 |
| Miriam Salter | Project Leader, Structural (since 2016) | 2009 | 2018 |
| Seamus Corrigan | Technical Lead, Civil | 2016 | 2018 |
| James Leiper | Project Leader, Structural | 2017 | 2018 |
| Claire Virtue | General Manager, Corporate Services | 2017 | 2018 |
| Richard Hatton | Strategic Development Manager | 2014 | 2018 |
| Mark Riddell | Associate Director | 2013 | 2018 |
| Mark Johnston | Project Director | 2015 | 2017 |
| James Leiper | Project Engineer, Structural | 2011 | 2017 |
| Gareth Jenkins | Regional Manager, Associate Director since 2015 | 2011 | 2017 |
| Alistair Eyres | Project Leader | 2012 | 2017 |
| Jamie De Palma | Project Leader, Civil | 2009 | 2017 |
| Fabio Otranto | Civil Environmental Engineer, Project Leader for Civil | 2011 | 2017 |
| Tynan Luzuk | Project Engineer, Structural | 2014 | 2017 |
| Mark Rea | Director | 2012 | 2017 |
| Troy Oliver | Structural Project Engineer | 2016 | 2017 |
| Mike Rathbone | Project Director, Transport | 2016 | 2017 |
| Troy Oliver | Structural Engineer | 2011 | 2016 |
| David Sidie | Project Leader, Civil | 2015 | 2016 |
| Andrew Tucker | Project Director, Civil | 2013 | 2016 |
| Derek Smith | Project Engineer, Structural | 2013 | 2016 |
| Lachlan Harris | Project Leader, Civil | 2013 | 2015 |
| Sue Waddell | Office Manager | 2013 | 2014 |
| Richard Hatton | Civil Design Manager, Project Leader | 2011 | 2014 |
| Tynan Luzuk | Graduate Engineer, Structural | 2012 | 2013 |
| Emily Long | Administration Manager | 0 | 2013 |
| Derek Smith | Structural Engineer | 2011 | 2013 |
| Andrew Tucker | Project Leader, Civil | 2011 | 2013 |
| Mark Riddell | Project Leader, Civil | 2006 | 2013 |
| Paul Syminton | Civil Projects Director | 2007 | 2013 |
| Mark Rea | Associate Director | 2010 | 2012 |
| Anthony Sims | Project Leader, Structural | 2005 | 2012 |
| Alistair Eyres | Structural Engineer | 2007 | 2012 |
| Steve Chidgzey | Structural Engineer | 2008 | 2011 |
| Gareth Jenkins | Structural Engineer | 2008 | 2011 |
| Mark Rea | Stuctural Engineer | 2004 | 2010 |
| Gareth Jenkins | Graduate Structural Engineer | 2007 | 2008 |
| Melissa Hyland | Personal Assistant | | 2007 |
| Richard Di Perna | Senior Project Engineer | 1999 | 2006 |
| Andrew Bayley | Associate Director | 2003 | 2005 |
| Anthony Sims | Trainee | 1998 | 2003 |
| Andrew Bayley | Project Leader | 1995 | 2003 |
| Arthur Psaltis | Director | 1996 | 1998 |
| Arthur Psaltis | Associate Director | 1994 | 1996 |
| Arthur Psaltis | Design Engineer | 1989 | 1991 |
| Lachlan Harris | Project Leader, Civil | 2017 | |
| Ken Herold | Project Leader, Industrial Design | 1992 | |
| Mark Rea | Principal, Structural | 2017 | |
| Juliette Pillar | Executive Assistant to CEO | 2004 | |
| Mike Rathbone | Principal, Transport | 2017 | |
| Dean Illingworth | Project Director, Civil | | |
| Peter Britt | Technical Director, Structural | | |
| Denise Tyler-Hare | Project Leader, Civil | 2009 | |
| Rebecca Larsen | | | |
| Mark Johnston | Principal | 2017 | |
| Harish Tantry | Engineering Director, Resources | 2017 | |
| Jason Humberstone | Technical Resource Manager, Structural & Industrial Design | 2000 | |
| George Banks | Technical Director, Structural | 2017 | |
| Ian Smith | Non-Executive Director | 2017 | |
| Thomas Crocker | Manager, Kimberley Region | 2019 | |
| Casey Armour | Marketing and Communications | | |
