Downer Defence

Australia’s largest sovereign prime is supporting the success of over 900 Australian small & medium enterprises. ‎‎Start your journey partnering with Downer Defence today.

Australia’s largest sovereign Defence partner, Downer Defence has been proudly supporting the Australian Defence Force for over 80 years.  Downer Defence provides the ADF with truly sovereign solutions, innovations, and thought leadership across a breadth of technical & professional services; program management of defence base redevelopments & upgrades, and the delivery of integrated facility and asset management across the Defence estate.   Downer Defence is smart, scalable and capable.

Downer Professional Services (DPS) provides critical support and advice to Government, National Security Agencies and Defence, including Team Downer, one of the 4 Major Service Providers. 

With hundreds of inhouse and key SME partner resources, DPS provides a full suite of services across five broad service offerings:

  • Strategy
  • Program Management and Delivery
  • Engineering and Asset Management
  • Data and Digital Services
  • Cyber Security.

Together, we deliver complex things that matter. 

Read more

Our Base & Estate Management team provides through-life sustainment capability, built over many decades of delivering managed services, asset management, facilities management, engineering and conditional assessment, and a large range of support and operational services to the ADF. 

Our long heritage of supporting the management and upkeep of Defence bases and military precincts includes:

  • Airfields
  • Naval bases
  • Barracks and accommodation precincts
  • Military training areas
  • Educational precincts
  • Data centres and Back up power generation
  • Operational command centres
Read more

Downer Defence has been upgrading and creating new Defence infrastructure on Australian Defence Force bases since 1968.

Today our Estate Development & Base Upgrades business supports Defence through:

  • Project Management
  • Program Management
  • Managing Contractor on projects such as the Riverina Redevelopment Program
  • Hands on delivery of facilities and infrastructure, including significant projects including the National Airfield Works at RAAF Base Williamtown. 
Read more

Downer Professional Services

At Downer Professional Services our team provide Technical and Advisory Services to our clients through the provision of expert skills, knowledge, capability management and delivery.


Advisory services

Providing advisory and consultancy services across specialist program management, ICT, security, systems engineering, asset management engineering, strategic planning and assurance services.

Technical services

Working with Government, Defence and Industry clients in ICT and CIO organisations to support and manage the full range of ICT systems including designing, building, and operating complex systems from conception through to disposal. 

Major services provider 

Team Downer provides CASG with ‘above the line’ contracting services; delivering project management, workforce planning and other professional expertise in partnership with Australia’s small-to-medium enterprises to contribute to the nation’s sovereign defence industry capability.  

Join us

We are seeking Above-The-Line service providers to enter our supply chain across: Team Downer (MSP); Technical Services; and Advisory Services. Key capabilities include: 

  • Commercial & procurement
  • ICT/network engineers
  • Systems engineers
  • ILS professionals 
  • Cyber security professionals

Base & Estate Management


To support Downer Defence’s ongoing operations and the next generation Base Services Transformation Program, Downer Defence is seeking expressions of interest from providers of Base and Estate Management across all urban, regional and remote areas of Australia. 

Specific service or capabilities of interest include:

  • Access control (security services)
  • Accommodation management
  • Airfield management
  • Cleaning services
  • Facilities management
  • Food services
  • Grounds and garden maintenance
  • Land management and environmental services
  • Laundry and dry-cleaning services
  • Pest and vermin management
  • Project scheduling and project delivery services
  • Rescue and fire-fighting services
  • Sport and recreation services
  • Training areas and ranges management
  • Transport services
  • Waste management services

If you are a provider of one or more of these services or capabilities, please register your interest via the link below. We strongly encourage interest from Australian small to medium enterprises, veteran and Indigenous owned businesses, and social enterprises.

Register your EOI

Estate Development & Base Upgrades


Defence experience - diverse specialist and generalist opportunities including:

  • Building refurbishments
  • Building services upgrades
  • Security and fencing upgrades
  • Electrical and mechanical upgrades
  • Demolition
  • Road and civil upgrades
  • Revegetation and soil remediation
  • Environmental monitoring

We are seeking to partner with SMEs who:

  • Have an outstanding Zero Harm culture and demonstrated performance
  • Offer clearances working in Secure Environments
  • Have a strong culture of social enterprise, diversity & inclusion
  • Will support our customer in meeting their reduced carbon emissions commitment