Senior Administration Officer - Temp to Perm!

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

Benefits offered by this job

Onsite parking

Temp-to-perm opportunity

Job summary

Sharp & Carter is seeking a Senior Administration Officer in Port Melbourne to take ownership of day-to-day administration, support site operations and lead a small admin team. The role spans timesheets, payroll, purchasing, onboarding and documentation to keep projects running smoothly.

You will work closely with site teams, project managers, payroll and finance, driving efficiency and ensuring accurate, timely processing.

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.

Responsibilities

• Lead and support a small administration team, coordinating workloads and deadlines.
• Oversee timesheets and payroll administration with internal and outsourced providers.
• Manage purchase orders, invoices and related administration.
• Coordinate onboarding for employees and subcontractors, including site access and compliance.
• Maintain project documentation, registers and filing systems.
• Act as liaison between site teams, payroll, finance and People & Culture.
• Troubleshoot issues and drive process improvements across sites.
• Provide hands-on support to keep operations moving.

Skills

Administration leadership

Payroll

Timesheets

Invoicing

Purchase orders

Stakeholder management

Process improvement

Organisational skills

Job description

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.