C4 Network & Communications Architect – Routing & Bearers

Your new company
Work within a complex Australian Defence environment focused on the design and integration of future Command, Control, Communications and Computers (C4) capabilities. This program is developing the logical, functional and physical architectures required to improve information exchange and technical interoperability across the integrated Joint Force and with coalition partners in the 2029–2033 epoch. The work spans routing, network transport, security, communications protocols, SATCOM and RF technologies, with activities conducted across Defence Protected and Secret networks.
Your new role
You will operate within the Foundational Design team, focusing on Joint Force C4 Systems of Systems and the development of wide area networking and communications solutions, translating complex technical requirements into structured C4 architecture and design guidance.

- Develop Foundational C4 Design guidance supporting information exchange and technical integration across Joint mission designs and mission threads.
- Lead the review and update of C4 Foundational Design guidance.
- Develop routing solutions covering network and transport development, security, protocols and standards.
- Develop bearer solutions involving SATCOM and RF technologies in a military environment.
- Apply systems engineering, mission engineering and Model Based Systems Engineering approaches to C4 Design.
- Develop architecture views, digital models and data visualisations representing current and future C4 environments.
- Collaborate with Defence stakeholders, standards teams, programs and projects to develop integration artefacts, standards profiles, submissions and senior-level briefs.

What you'll need to succeed




You will bring strong networking and communications architecture expertise, with the ability to connect detailed technical knowledge to broader systems and mission outcomes.

- NV2 security clearance as a minimum, particularly for technical communications network analysis and aspects of the work requiring higher-classification access.
- Demonstrable understanding of the OSI reference model, particularly the transport through physical layers.
- Strong knowledge of WAN standards and protocols, SATCOM and RF systems technologies.
- Experience working with ICT architectural views including Unified Architecture Framework (UAF), enterprise and solution architectures.
- Highly desirable: Defence capability development and/or sustainment experience.
- C4 Systems of Systems Engineering and/or Model Based Systems Engineering experience, together with strong team-oriented stakeholder engagement skills.
- Familiarity with Defence writing standards.

What you'll get in return
This contract provides substantial exposure to future-focused C4 architecture and Joint Force integration work across complex Defence networking and communications domains.

- An initial contract from January 2027, with two potential extension periods of up to 12 months each.
- Exposure to routing, networking, SATCOM, RF and C4 Systems of Systems design.
- The opportunity to influence C4 design guidance supporting future Joint Force interoperability.
- Flexible working hours negotiable with the team lead, while remaining fully onsite due to classified network requirements

What you need to do now
If you're interested in this role, click 'apply now' to forward an up-to-date copy of your CV to [email protected] , or call us now.
If this job isn't quite right for you, but you are looking for a current position, please contact us for a confidential discussion on your career.
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📌 Network and Communications Systems Architect (Canberra)
🏢 Hays
📍 Canberra