Senior Administration Officer
Port Melbourne | Temp to Perm | $100,000 – $110,000 + Super
Immediate start

The Opportunity

This role is within a growing business in the construction and infrastructure space to find a Senior Administration Officer who can take ownership of day-to-day administration, support site operations and lead a small administration team.

This is a hands-on role for someone who enjoys keeping things organised, solving problems and making sure everything runs smoothly behind the scenes. You’ll work closely with site teams, project managers, payroll and finance, overseeing everything from timesheets and purchase orders through to onboarding, documentation and general operational support.

The role

- Leading and supporting a small team of administration professionals, coordinating workloads and ensuring deadlines are met.
- Overseeing timesheets and payroll administration, working closely with internal stakeholders and outsourced payroll providers to ensure employees are paid accurately and on time.
- Managing purchase orders, invoices and cost-related administration, ensuring information is accurate and processed efficiently.
- Coordinating employee and subcontractor onboarding, including inductions, site access, uniforms, PPE and compliance documentation.
- Maintaining project documentation, registers, reporting and filing systems.
- Acting as a key point of contact between site teams, project managers, payroll, finance and People & Culture.




- Troubleshooting administrative and payroll issues, following up discrepancies and ensuring matters are resolved promptly.
- Identifying opportunities to streamline processes, improve systems and bring greater consistency across sites.
- Providing hands-on support across the business wherever needed to keep operations moving.

About you

- Senior administration experience within construction, electrical, engineering or infrastructure.
- Experience leading a small administration team.
- Strong knowledge of timesheets, payroll, purchase orders and invoicing.
- Highly organised, with the ability to manage high volumes and competing deadlines.
- Proactive problem-solver who takes ownership and follows things through.
- Strong communication skills and confident stakeholder management.
- Detail-oriented with a focus on improving processes and efficiencies.
- Experience with Enterprise Agreements, Modern Awards, allowances and outsourced payroll providers would be advantageous.

What's On Offer?

- Salary: $100,000 – $110,000 + superannuation.
- Location: Port Melbourne, with free onsite parking.
- Working hours: Flexibility around start times, with starts available between 6:30 am and 9:00 am.
- Opportunity: Temp-to-perm arrangement with the potential to secure a permanent position.
- Setting: A growing business where you can take ownership, work closely with key stakeholders and help shape processes as the organisation continues to evolve.

📌 Senior Administration Officer - Temp to Perm! (Port Melbourne)
🏢 Sharp & Carter Business Support
📍 Port Melbourne