L3Harris is dedicated to recruiting and developing high-performing talent who are passionate about what they do. Our employees are unified in a shared dedication to our customers’ mission and quest for professional growth. L3Harris provides an inclusive, engaging environment designed to empower employees and promote work-life success. Fundamental to our culture is an unwavering focus on values, dedication to our communities, and commitment to excellence in everything we do.

L3Harris is the Trusted Disruptor in defense tech. With customers’ mission-critical needs always in mind, our employees deliver end-to-end technology solutions connecting the space, air, land, sea and cyber domains in the interest of national security.

About the role

A Senior Systems Engineeris responsible forleading systems engineering activities across the full system lifecycle for complexDefencecapability projects. The role ensures technical solutions are coherent, verifiable, compliant, and aligned to customer and operational requirements.This is achieved through participation in all phases of the systems engineering lifecycle including requirements management, architecture development, design, implementation, integration, verification & validation,riskand change management.

What the role will involve

The responsibilities of your role will include the following:

- Work in a multi-disciplinary team with primary responsibility for the application of systems engineering processes in accordance with organisational procedures and recognised standards to ensure timely and skilled delivery of project outcomes
- Lead requirements analysis, decomposition, allocation, traceability, verification planning, and compliance management




- Establish andmaintainthesystemtechnical baseline, including requirements, architecture, interfaces, design decisions, assumptions, risks, and verification evidence
- Develop, review, andmaintainkey systems engineering artefacts, including specifications, architecture & descriptions, interface control documents,verificationartefacts, trade studies, technical reports, and systems engineering plans
- Lead system architecture and interface management activities to ensure the solution is technically coherent,feasible, secure, supportable, and aligned with operational needs
- Support engineering decisions through structured trade studies, technical analysis,optionassessment, and evidence-based recommendations
- Contribute to systems engineering estimates, schedules, scope definition, resource planning, and technical delivery planning
- Develop andmaintainverification and validation strategies, plans, procedures, matrices, and evidence todemonstratecompliance with applicable requirements
- Support integration, test readiness, verification execution, defect resolution, and customer acceptance activities
- Plan, prepare, and support internal and customer technical reviews, including requirements, design, test readiness, production readiness, verification, and acceptance reviews
- Manage technical risks, issues, assumptions, dependencies, opportunities, and engineering change impacts




- Support configuration management and engineering change control to ensure the approved technical baseline ismaintained
- Coordinate with specialty engineering disciplines, including safety, security,cyberworthiness, ILS, reliability, maintainability, human factors, EMI/EMC, and environmentalqualification
- SupportDefencetechnical assurance, certification, compliance, and acceptance activities, including preparation of objective quality evidence.
- Participate in internal engineering and quality processes, including non-conformance reports, failure reports, corrective actions, investigations, lessons learned, and continuous improvement activities.
- Provide technical leadership, task guidance, peer review, and mentoring to junior engineers and other engineering team members.
- Support adherence to company Quality processes and procedures, including thoserequiredfor AS9100 accreditation

Whatyou’llbring

The role requires the following experience and skills:

- Degree in electronic/electrical engineering or similar discipline.
- 6+ years of experience in a System Engineering role.
- Experience with Defence acquisition or sustainment programs.
- Demonstrated experience applying systems engineering principles across the system lifecycle.
- Understanding of engineering change control, configuration management, technical risk management, and technical decision-making processes.
- Eligible for registration with the Board of Professional Engineers of Queensland (RPEQ).
- Ability to work independently or as part of a multi-disciplinary team.
- Ability to communicate complex technical information clearly and effectively to engineering, manage

📌 Senior Systems Engineer (Brisbane)
🏢 L3Harris Technologies
📍 Brisbane