| Rob Turner | Infrastructure Engineer | 2019 | 2020 |
| Alex Krstevski | Associate Director, Strategy & M&A, in Switzerland | 2016 | 2018 |
| Joel Beilin | Head, Global Audiology Relations, Collaboration Officer, Siemens Medical Instruments (Singapore) | 2012 | 2015 |
| Jade Concei | Legal Counsel (secondee to Fiona Stanley Hospital Project) | 2013 | 2015 |
| Jason Davis | Regional Commercial Manager (London) | 2012 | 2014 |
| Jason Cooper | Executive Manager, Sales | 2011 | 2014 |
| Albert Goller | Managing Director, Australia & New Zealand | 2002 | 2012 |
| Katrina Doring | General Manager, Strategy & Marketing, Siemens IT Solutions & Services | 2010 | 2011 |
| Jason Cooper | Southern Regional Manager | 2008 | 2011 |
| Kathryn Soares | Branch Manager | 2005 | 2007 |
| Frank Havelka | Director, Olympic 2008 Security | 2006 | 2006 |
| Andy Smith | International Commercial Manager, Aero Derivative Division | 2005 | 2006 |
| Frank Havelka | General Manager, Building Technologies North Region | 2003 | 2006 |
| Steve Gallagher | General Manager, Industrial Solutions (Aus) | 2002 | 2006 |
| Michael Waymark | Country Manager, Power Transmission & Distribution | 1999 | 2004 |
| Larissa Barnao | Personal Assistant to the GM of Rail Services | 2002 | 2004 |
| Michael Wright | Regional Manager, Siemens Thiess Communications JV | 2000 | 2004 |
| Yu Guan | Sales Manager, Power Automation (China) | 2001 | 2003 |
| Frank Havelka | Director, Security Systems | 2001 | 2003 |
| Con Mouzouris | Technology Consultant | 1996 | 2000 |
| Dominic Cobb | Engineering Services Manager | 1978 | 2000 |
| David Gray | Corporate Treasurer, Supervisor Treasury & Taxation | 1992 | 1994 |
| Max Noble | Software Engineer, Siemens Plessey Radar | 1988 | 1991 |
| Nick Fitt | Chief Technician | 1976 | 1985 |
