The Company This advanced technology firm plays a critical role in supporting national defence capabilities through its sovereign design and production expertise. With a strong engineering and software focus, their Brisbane-based operations develop cutting-edge communication systems that span air, land, sea, and space domains. Backed by a global network, this organisation is a key partner to the Australian Government and a trusted name in the international defence industry. They offer a collaborative, mission-driven environment where technical excellence meets real-world impact. The Role Join a growing team developing next-generation mission systems that integrate secure communications across the battlespace. As a Senior Cyber & Software Engineer, you’ll lead the cyber accreditation and software development of secure C4 systems. This is a hands-on role combining secure software design with system-level problem-solving and client engagement. You’ll contribute to low-level requirements, design, system hardening, and continuous performance improvements, while driving technical conversations across workshops and design reviews. There’s also scope to work on core features controlling deployed network data planes, with a focus on security, performance, and innovation. About You You’re a seasoned software engineer with a solid cyber security foundation. You thrive in technically complex environments where defence-grade security, real-time performance, and collaborative problem-solving intersect. You’re confident working with government or regulated environments and are just as comfortable writing code as you are presenting in a design review. If you’ve got experience with Software Defined Networking, all the better – this team is at the frontier of secure, scalable tactical communications. Skills & Experience 6 years in software development with 2 years cyber security experience Strong development skills in Java or C#, REST APIs, and networking protocols Solid understanding of secure networking and encryption standards (e.g., SSL/TLS, AES/SHA) Exposure to SDN, IPv4/IPv6, VLANs, VXLANs highly regarded Knowledge of ISM, DSPF and secure systems accreditation practices Frontend/backend web development experience (e.g., React, .NET) a plus Excellent written and verbal communication skills Must be an Australian citizen and eligible for Defence security clearance What’s on Offer Be part of a sovereign capability team contributing to national defence Flexible leave, discounted private health insurance, and novated leasing options Work on meaningful, secure-by-design technologies in a high-performance team Genuine career development in a business with global impact and local roots Apply Now If you're a security-cleared (or eligible) engineer ready to push the boundaries of defence communications, apply today. Click "Apply Now" to submit your application or reach out to Ben Grifiths at P&C Partners Brisbane for a confidential conversation. [email protected] / 0452214062