Job Description

Are you an organized HR professional ready to take the next step in your career? Amentum is seeking a proactive HR Coordinator to provide critical operational and administrative support across our flagship programs.

In this dynamic role, you will act as the engine room of our HR department, managing workflows across both Australian and US jurisdictions. You will balance day-to-day administrative execution with active stakeholder engagement, ensuring our defense program teams are fully supported.

Work Schedule:

Day shift – 5 days per week, 8 hours per day

Essential Responsibilities:

• HR Workflow Coordination: Manage and process end-to-end personnel actions, contract variations, and onboarding workflows using Workday and customer data systems.

• Dual-Jurisdiction Support: Coordinate benefits enrollment for US employees and superannuation workflows for Australian personnel.

• Data & Compliance Ownership: Maintain absolute data integrity across our AU/US HRIS and payroll systems, ensuring compliance with local legislation and strict defense audit requirements.

• Stakeholder Support: Serve as a trusted first point of contact for employees and managers regarding HR policies, procedures, and basic entitlements.

• Process Improvement: Actively contribute to updating local HR policies, standard operating procedures (SOPs), and training documentation.

What You Bring

• Certificate IV in Human Resources (or a related Business discipline)

• 2+ years of experience in an HR administration, coordination, or support role (defense, contracting, government, or heavy industry experience is a major plus).

• Proven, hands-on experience utilizing Workday or equivalent enterprise-tier HRIS platforms, alongside strong MS Office skills.

• A foundational understanding of Australian Fair Work regulations and/or US labor standards.

• High attention to detail, exceptional discretion when handling classified or confidential files, and the ability to communicate confidently with varied stakeholders.

• Excellent oral and written communication skills with operating knowledge of SharePoint, Microsoft Office Suite, and integrated software applications are required.

• Experience supporting defense industry programs or working within a dual AU/US corporate matrix.

Work Environment, Physical Demands, and Mental Demands:

• Desk-based, sedentary role requiring prolonged use of computers.

• Occasional lifting of office materials up to 5kg.

• High cognitive demand requiring rapid context-switching between operational compliance tasks and administrative data entry.

Security Clearance Required:

Minimum active or ability to obtain Australian Negative Vetting (NV1) equivalent Department of Defense Security Clearance and ability to maintain that clearance. Depending on ongoing mission needs and access the role requires, the candidate may be required to obtain a higher Australian Top Secret Positive Vetting (TSPV) clearance.

This position is designated as a safety sensitive position.

As part of our commitment to maintaining a safe and compliant work environment, Amentum is a drug-free workplace and requires all personnel to comply with company drug and alcohol policies as a condition of employment. Employment is contingent upon successful completion of the drug screening process.

Other Responsibilities:

Safety - Amentum enforces a safety culture whereby all employees have the responsibility for continuously developing and maintaining a safe work environment. As appropriate, each employee is responsible for completing all training requirements and fulfilling all self-aid/buddy aid responsibilities, participating in emergency response tasks and serving on safety committees and teams.

Quality - Quality is the foundation for the management of our business and the keystone to our goal of customer satisfaction. It is our policy to consistently provide services that meet customer expectations. Accordingly, each employee must conform to the Amentum Quality Policy and carry out job activities in compliance with applicable Amentum Quality System documents and customer contracts. Each employee must read and understand his/her Quality Management and Customer Satisfaction responsibilities.

Procedure Compliance - Each employee must read, understand and implement the general and specific operational, safety, quality and environmental requirements of all plans, procedures and policies pertaining to his/her job.

Qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, sexual orientation, gender identity, disability or protected veteran status.