Office Administrator

Sydney, NSW

· Full time / Permanent

· Executive / Support

About Us

Infotrust is one of Australia’s leading cyber security and technology services companies. We help organisations secure their future - protecting people, data and systems through specialist expertise across managed technology, cyber, cloud, consulting and data protection. We’re growing fast, and our people are at the heart of everything we do.

The Role

We’re looking for a highly organised, proactive Office Administrator to keep our workplace running smoothly and provide direct support to our Executive Assistant across administrative, financial and coordination activity.

This is a hands-on, high-trust role for someone who takes ownership, works to a high standard of accuracy and wants to build toward a broader executive support career. You’ll be the day-to-day owner of office operations - ensuring our workplace is skilled, welcoming and well-organised for employees, clients and visitors.

Key Responsibilities

- Own day-to-day office operations, ensuring a professional, well-maintained and fully stocked workspace across our locations.
- Act as the primary liaison with building/property management and contractors for maintenance, repairs, access and installations.
- Coordinate office moves, furniture relocations, supplier and facilities management, and workplace presentation.




- Support core financial administration — expense claims, purchase orders and corporate card reconciliation — accurately and on time.
- Provide administrative and coordination support to the Executive Assistant and Executive Leadership Team, including travel, events and ad-hoc support.
- Set up and improve office processes across our Sydney, Melbourne and Brisbane locations.

Skills & Experience

- Demonstrated experience in office administration, facilities coordination or executive/team support.
- Exceptional organisation and attention to detail, with the ability to juggle competing priorities and deadlines.
- A calm, professional and service-oriented temperament, with strong stakeholder communication.
- Proactive, self-sufficient and comfortable taking ownership of the workplace.
- Proficiency across Microsoft applications.

Nice to have

- Experience supporting an executive team or within a technology/professional services business.
- Exposure to finance administration (expenses, POs, reconciliations).

Why Infotrust

- A high-growth, people-first culture where your work has genuine impact.
- Ongoing investment in your development — certifications, training and clear career pathways.
- Work alongside some of the best specialists in the Australian market.
- Flexible, hybrid working and a supportive, collaborative team environment.

📌 Office Administrator (Sydney)
🏢 InfoTrust
📍 Sydney