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Posted 24 June, 2026

Systems Engineer - Defence

C4i Solutions
Sydney, New South Wales, Australia Full Time
Reference: 421_595296_63RVXV7R

Be you with us - Shape the future of Defence and Technology

C4i Solutions is a leading Technology, ICT, and Digital Solutions company, delivering real outcomes for our Defence, Government, and Industry partners. We're growing and we're looking for great people who share our values, believe in our mission, and care about what they do. People who value teamwork, take pride in their work, and want to make an impact.

About the Role:

The Systems Engineer Defence provides specialist engineering and technical ICT and systems support, primarily to our Defence Secure Mission Platform capability, whilst supporting systems operating within classified and secure Defence environments. Performing a range of engineering and technical ICT support activities, the role is a primary interface between technical builds, engineering compliance and systems sustainment and maintenance.

Based at our Jamisontown, NSW HQ, you will be part of a collaborative and dynamic team with clear pathways to develop into senior systems engineering and cyber security roles.

About the role:

  • Support the design, implementation and sustainment of secure ICT infrastructure and mission systems in Defence and government environments.
  • Assist in the development, testing and validation of Standard Operating Environments (SOEs) in accordance with Defence security and technical standards (ISM, E8, CASG Engineering standards).
  • Conduct system integration, configuration and acceptance testing activities to ensure operational readiness.
  • Maintain system security baselines and ensure compliance with Defence security policies, accreditation requirements and hardening standards.
  • Investigate, diagnose and resolve complex system, application and infrastructure faults within agreed service levels.
  • Perform routine system administration activities across server, workstation and virtualised environments.
  • Support the deployment, configuration and management of Microsoft technologies including Active Directory, Group Policy, DNS and DHCP services.
  • Assist with vulnerability remediation activities and support cyber security uplift initiatives.
  • Contribute to engineering documentation including system designs, build guides, operating procedures and support manuals.
  • Participate in change management, release management and configuration control processes.
  • Assist with the management and administration of virtualisation platforms and cloud-enabled technologies where applicable.
  • Work collaboratively with project teams, engineers, cyber security specialists and customer representatives to deliver capability outcomes.
  • Participate in system audits, compliance reviews and accreditation activities as required.
  • Support incident response, root cause analysis and continuous service improvement initiatives.
  • Maintain software licensing, asset management and hardware inventory records.
  • Provide technical advice and recommendations to improve system performance, availability and security.
  • Participate in support, maintenance windows and operational support activities as required.

About you:

  • Australian Citizen (required for Defence projects) with a min AGSVA NV1 clearance. The ability to obtain a Negative Vetting 2 (NV2) security clearance is preferred.
  • A BACH Engineering Degree (Electrical, Electronics, Software, Mechanical, Robotics).
  • Experience working in a Defence project setting, preferably in either complex ICT, Engineering or Technology integration environments.
  • Solid understanding of IT security principles, particularly within Defence or secure ICT environments (Familiar with ISM, E8, DSPF, PSPF).
  • Hands-on experience with system troubleshooting, patching, and performance tuning.
  • Ability to work in high-pressure, secure ICT environments.
  • Ability to work in an agile environment.
  • A strong level of commercial acumen and able to think outside the box.
  • Self-starter who takes the initiative with excellent problem-solving skills - brings a solution first mindset.
  • A high level of communication both written and verbal.
  • Ability to work either individually or as part of a broader team.

Why Join Us?

  • Veteran-Focused: As a Veteran-owned and operated company, we value your service. Our Veteran Career Development Program is designed to support your transition and future career growth. Defence Veterans are strongly encouraged to apply.
  • People First: Were a company that puts people at the centre. Fostering a culture of wellbeing, engagement, and respect for your unique skills.
  • A Culture That Values You: Be part of a passionate, supportive, and growing team that recognises your contribution and rewards success.
  • And we like to keep things real. We work hard, support each other, and make space for a laugh along the way.

Benefits We Offer:

  • Long Service Leave @ 7 years: Take long service leave after 7 years' service (Pro-rata).
  • Health & wellbeing allowance: Our annual Health & Wellbeing allowance ($250) helps you stay fit and healthy.
  • First year leave (5 days): We offer 5 additional leave days in your first year to help you settle in!
  • Birthday leave: We know your birthday is a special day! Take the day off and relax on us!
  • Higher Education Subsidy: Obtain a higher qualification relevant to your role while working with us and receive a $2500 contribution annually. This includes certification fees on digital learning courses.
  • Veteran Engagement: At C4i Solutions, we understand that leaving the ADF can be a daunting time. We've been there, as we know from our own experience. Our Veteran Career Development Program offers a range of support and development activities for ADF veterans and their partners, so that your transition from the ADF is seamless and supported.
  • Service Awards: We acknowledge your service with us through 1, 5, and 10-year awards.
  • Employee Recognition: We reward our people when they go above and beyond.
  • Donate for a Cause: Donate to a charity of your choice and we'll match it up to a value of $200!
  • PLUS, much more!

Be you, with us:

If you're looking for a workplace where your skills, experience, and dedication are genuinely valued we'd love to hear from you. We are a close-knit team of veterans, problem-solvers, tech heads, dads, mums, soccer coaches, and weekend adventurers who love what we do, like to have a bit of fun, and don't take ourselves too seriously. What brings us together is a passion for doing great work that makes a real difference to those who serve.

If this sounds like your kind of team, apply now. We'd love to hear from you.

www.C4isolutions.com.au

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