Senior Admin Lead – Payroll, Onboarding & Ops (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

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