Senior Administration Officer - Temp to Perm!

Sharp & Carter Business Support; Melbourne; On-site; AUD 100,000 - 110,000; Full time

Job summary

Sharp & Carter Business Support in Port Melbourne is seeking a Senior Administration Officer to take ownership of day-to-day administration, support site operations and lead a small administration team. You’ll work closely with site teams, project managers, payroll and finance, handling timesheets, POs, onboarding and documentation.

The role is Temp to Perm with an immediate start, offering AU$100,000–AU$110,000 + super and flexible start times, and the potential to progress as the organisation

Qualifications

• 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 deadlines.
• Proactive problem-solver with ownership and follow-through.
• Strong communication skills and stakeholder management.

Responsibilities

• Leading and supporting a small team of administration professionals, coordinating workloads and deadlines.
• Overseeing timesheets and payroll administration, ensuring accurate and timely payroll.
• Managing purchase orders, invoices and cost-related administration.
• Coordinating onboarding, inductions, site access, uniforms and compliance documentation.
• Maintaining project documentation, registers, reporting and filing systems.
• Acting as a key contact between site teams, payroll, finance and People & Culture.
• Troubleshooting administrative and payroll issues and resolving discrepancies.
• Identifying opportunities to streamline processes and improve systems across sites.
• Providing hands-on support to keep operations moving.

Skills

Timesheets

Payroll

Purchase orders

Invoicing

Onboarding

Documentation

Stakeholder management

Job description

Senior Administration Officer - Temp to Perm!

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.
• Environment: A growing business where you can take ownership, work closely with key stakeholders and help shape processes as the organisation continues to evolve.