As one of Australia's leading security companies, MSS Security is built on teamwork, respect, and integrity.
We provide long-term career paths, stability, and a workplace where your professionalism and dedication are genuinely valued.
To find out more visit our website at
About the role:
Join one of Australia's leading security organisations and play a vital role in protecting critical Defence infrastructure across Western Sydney.
MSS Security is seeking professional and reliable Defence Security Relievers to support operations across four Defence sites:Glenbrook, Holsworthy, Richmond and Orchard Hills.
This unique position offers the chance to work across multiple Defence environments, gain broad operational experience, and build a rewarding long-term career within the Defence sector.
Are you someone who thrives in high - trust environments and takes pride in doing things the right way?
You are professional, adaptable and committed to delivering high standards of security and customer service.
You enjoy working in a team environment while also being confident working independently when required.
About you:
Australian Citizenship- required for Defence security clearance eligibility
A currentSecurity Licensevalid in NSW
Baseline Defence Clearanceor must be willing to obtain a Baseline Clearance
Excellentcommunication skillsand the ability to interact confidently with Defence personnel and site stakeholders
The ability toremain calm under pressureand make sound decisions
A strong sense ofintegrity,accountability, andattention to detail
Previous security experience is advantageous but not essential.
We welcome applications from motivated individuals looking to build a long term career in the security industry.
Veterans encouraged to apply.
Master License Number: *********
About the Company
As one of Australia's leading security companies, MSS Security is built on teamwork, respect, and integrity.
We provide long-term career paths, stability,



and a workplace where your professionalism and dedication are genuinely valued.
To find out more visit our website at
About the role:
Join one of Australia's leading security organisations and play a vital role in protecting critical Defence infrastructure across Western Sydney.
MSS Security is seeking professional and reliable Defence Security Relievers to support operations across four Defence sites:Glenbrook, Holsworthy, Richmond and Orchard Hills.
This unique position offers the opportunity to work across multiple Defence environments, gain broad operational experience, and build a rewarding long-term career within the Defence sector.
Are you someone who thrives in high - trust environments and takes pride in doing things the right way?
You are professional, adaptable and committed to delivering high standards of security and customer service.
You enjoy working in a team environment while also being confident working independently when required.
About you:
Australian Citizenship- required for Defence security clearance eligibility
A currentSecurity Licensevalid in NSW
Baseline Defence Clearanceor must be willing to obtain a Baseline Clearance
Excellentcommunication skillsand the ability to interact confidently with Defence personnel and site stakeholders
The ability toremain calm under pressureand make sound decisions
A strong sense ofintegrity,accountability, andattention to detail
Previous security experience is advantageous but not essential.
We welcome applications from motivated individuals looking to build a long term career in the security industry.
Veterans encouraged to apply.
Master License Number: *********
MSS Security is an Equal Opportunity Employer, valuing the unique backgrounds, experiences, and contributions of each person We encourage and celebrate diversity.
We are proud to:
be certified by the Workplace Gender Equality Agency,
be a partner and supporter of Veterans employment and honoured to have an endorsed INNOVATE Reconciliation Action Plan.
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📌 Security Officer - Defence (New South Wales)
🏢 Mss Security
📍 New South Wales