Silentium Defence is delivering world-leading passive radar and advanced sensing technology to support Defence, national security, and space domain awareness. As we scale our engineering capability, we're expanding the Applications & Services Team — the software backbone that powers our operations.
The Opportunity
We're seeking a Senior Software Engineer who thrives in complexity, simplifies through architecture, and builds reliable internal systems that matter.
This role is a key technical leader responsible for designing, building, and maintaining the internal applications, integrations, and platform services that support research, trials, production, and delivery operations across Silentium.
You'll collaborate with cross-functional teams, set engineering standards, mentor others, and ensure our software foundations are scalable, maintainable, and operationally ready.
What You'll Do
* Architect systems, data flows, and integration patterns
* Build internal apps, APIs, automation tools, and integration workflows using NodeJS, Python, JavaScript & Linux services
* Improve code quality, documentation, testing, and operational readiness across the stack
* Manage reliability, observability, and system support more proactively via tooling and automation
* Collaborate with Radar, Research, Production, Trials & Business teams to deliver fit-for-purpose solutions
* Mentor other engineers, improving capability and standards across the organisation
* Identify and mitigate technical risks early, especially legacy, unclear requirements, and cross-team dependencies
Success Looks Like
* Deliver stable, documented, and operationally ready systems
* Reduce friction and support load through tooling, automation, and better design
* Raise engineering standards via mentoring and technical leadership
* Support quarterly objectives and strategic initiatives (OKRs, NTOs, production)
What You Bring
* Degree in Software Engineering, Computer Science, Engineering or similar
* 5+ years' professional software engineering experience
* Strong architectural thinking and systems design ability
* High proficiency in NodeJS, JavaScript, Python, and Linux
* Excellent communication and stakeholder engagement skills
* Ability to break complexity into simple, reliable, maintainable solutions
* Ownership mindset and commitment to reliable, well-tested software
* Leadership qualities and willingness to mentor and unblock others
How You Work
Your behaviours matter as much as your code. We're looking for engineers who:
* Communicate early, clearly, and constructively
* Mentor others and uplift team capability
* Use data to make decisions
* Deliver end-to-end outcomes
Why Silentium Defence?
Here, your work contributes to real national capability, not just product features. You will:
* Work at the intersection of Defence, space, software, and advanced sensing
* See your software drive real systems in trials, production, and deployment
* Influence architecture, standards, and engineering culture
* Grow with a scaling company expanding into global markets
If you're a senior engineer who wants to build meaningful systems, simplify complexity, and uplift engineering capability — we'd love to hear from you.
Application Eligibility:
Due to the nature of our work within the Defence industry, applicants must be Australian Citizens and eligible to obtain and maintain a (NV1) level security clearance, only applicants who meet these mandatory requirements will be considered.
How to Apply:
Click "Apply Now" to submit your CV and cover letter outlining your suitability for this opportunity.
please note applications submitted to us via email will not be progressed further for consideration)
Applications close: 5:00pm Tuesday 3 February 2026
For a confidential discussion, please contact: People & Culture by emailing:
Silentium Defence is an equal-opportunity employer that values diversity of thought, background, and experience. We foster a respectful and collaborative workplace where every team member is encouraged to contribute to our shared mission. Due to the nature of our work, applicants must be Australian citizens and eligible to obtain and maintain a Defence security clearance.
Recruitment Agency Disclaimer: Silentium Defence does not accept unsolicited resumes or candidate referrals, and we will not be responsible for any fees associated with unsolicited submissions.