MacKellar is a leading provider of mining and civil earthmoving services, with more than 60 years of industry experience. We take pride in our people, our strong safety culture and our commitment to delivering quality outcomes for our clients.

About the role

We’re seeking a Site Administrator to provide reliable administrative support across site operations, helping ensure personnel, training, accommodation and day-to-day processes run smoothly.

Working on a 5/2/4/3 roster with 10-hour days, you’ll work closely with site leadership, supervisors and other team members, taking ownership of a range of administrative responsibilities while supporting the wider site team.

Key responsibilities

- Coordinate the end-to-end onboarding process for new employees, contractors and site visitors, including inductions, site familiarisations and associated documentation.
- Maintain training registers, licences, VOCs and competency records, ensuring personnel meet site requirements.
- Coordinate training requests, refresher training and mandatory certification renewals.
- Administer purchase orders, goods receipting, goods received not invoiced (GRNI), and labour and parts receipting.
- Assist with accommodation arrangements, travel bookings, timesheets and rosters, providing backup support to the Travel and Accommodation Administrator as required.
- Provide general administrative support to site leadership, supervisors and management, including reception, document control, filing and correspondence.
- Maintain accurate records, spreadsheets, training matrices and routine reports for site and Head Office.
- Coordinate meetings, prepare documentation and minutes, and assist with office supplies, inventory and archiving.
- Follow company policies, procedures and site safety and environmental requirements,



while identifying opportunities to improve administrative processes.

Your new company

MacKellar is a leading provider of mining and civil earthmoving services, with more than 60 years of industry experience. We take pride in our people, our strong safety culture and our commitment to delivering quality outcomes for our clients.

About you

You’re an organised and proactive administrator who can manage competing priorities, maintain accurate records and provide dependable support to a busy site team. You communicate confidently with people at all levels and understand the importance of compliance, attention to detail and following established processes.

To be successful in this role, you’ll bring:

- Previous experience in site administration, project administration or a similar administrative role.
- Strong organisational skills and the ability to manage multiple tasks and deadlines.
- Good computer skills, including Microsoft Excel and experience using business systems.
- Strong attention to detail and the ability to maintain accurate records and documentation.
- Explicit communication skills and a customer-focused approach when dealing with employees, contractors and visitors.
- The ability to work independently while contributing to a wider team.
- A commitment to workplace health, safety and environmental requirements.

Experience with onboarding, training coordination, purchase orders, receipting or travel and accommodation administration will be highly regarded.

Why Join MacKellar?

- Work with an established business in the mining and civil earthmoving industry.
- Take on a varied role with exposure to multiple aspects of site operations.
- Be part of a team where your organisation and administrative support contribute to the smooth running of the site.

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📌 Site Administrator - MDMT 12/10/2026 (Emerald)
🏢 MacKellar Group
📍 Emerald