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:** Maintai...