Site Administrator

Monadelphous; Mount Thorley; On-site; AUD 65,000 - 85,000; Full time

Benefits offered by this job

Permanent full-time

Mon–Fri roster

Safety and wellbeing focus

Career development opportunities

Job summary

Monadelphous is seeking an experienced Site Administrator to join our NSW Operations team on a permanent full-time basis. Based on site in the Upper Hunter, the role covers daily timesheets, payroll, invoicing and PO management for 40+ staff, with a Monday–Friday roster and local operations.

The successful candidate will be highly organised, detail‑oriented and able to work independently to meet deadlines, maintain accurate records and support day-to-day site operations.

Qualifications

• Experience with timesheets, payroll administration, invoicing and purchase orders.
• Strong attention to detail and accuracy.
• Excellent organisational skills with the ability to prioritise deadlines.
• Proficiency in Microsoft Office, particularly Excel.

Responsibilities

• Prepare, entry and manage daily timesheets and payroll for 40+ employees.
• Prepare and submit client claims and invoicing; raise and track purchase orders.
• Monitor project costs and variances; manage records.
• Maintain accurate records and complete administrative tasks on time.
• Liaise with supervisors, managers and clients to ensure timely information.
• Provide high-quality administrative support to the site operations team.

Skills

Timesheets

Payroll

Invoicing

Purchase orders

Excel

Organisation

Communication

Independence

Tools

Microsoft Office

Job description

We have an exciting opportunity for an experienced Site Administrator to join our NSW Operations team on a permanent full-time basis.

Based on site in the Upper Hunter, this Monday to Friday position will see you providing essential administrative and financial support to our site operations team.

We are looking for a highly organised and proactive individual who demonstrates strong attention to detail, excellent time management skills and the ability to manage competing priorities in a fast-paced environment.

The successful candidate will be confident working independently, meeting deadlines and maintaining accurate records while supporting the day-to-day operations of the site.

Working with Monadelphous offers many benefits, including:

• Permanent full-time position within a high-performing and supportive team.
• Monday to Friday roster, allowing you to be home every night while living and working locally.
• Safety and wellbeing at the forefront of our culture.
• Opportunities for professional development and career progression.

Key responsibilities will include:

• Preparation, entry and management of daily timesheets and payroll information for 40+ employees.
• Preparation and submission of client claims and invoicing. Raising, tracking and managing purchase orders.
• Monitoring project costs, tracking expenditure and identifying variances.
• Maintaining accurate records and ensuring administrative tasks are completed within required deadlines.
• Liaising with supervisors, superintendents, managers and clients to ensure timely and accurate information.
• Providing high-quality administrative support to the site operations team.

What you'll bring:

• Previous experience in a site administration, project administration or similar role, ideally within mining, construction or maintenance.
• Experience with timesheets, payroll administration, invoicing and purchase orders.
• Strong attention to detail and a high level of accuracy.
• Excellent organisational skills with the ability to prioritise competing deadlines.
• Strong communication and problem-solving skills.
• Confidence working independently and taking ownership of responsibilities.
• Proficiency in Microsoft Office, particularly Excel.
• A positive, proactive attitude and willingness to support the wider team.
• Full Australia Working Rights.

Life at Monadelphous

We celebrate our diversity and shared values and are committed to inclusion and equal opportunities for all. We’re committed to hiring locally, encourage people of all diverse backgrounds to apply and strongly encourage women and First Nations people to submit an application.

About us

Monadelphous is an ASX-200 company providing multidisciplinary construction, maintenance and industrial services to many of the largest companies in the resources, energy and infrastructure sectors. Established in 1972, we’ve been working in Australia and around the world for more than 50 years. We work on the biggest projects and ensure our teams have a variety of opportunities available to follow their career path of choice.

Our Maintenance and Industrial Services division specialises in providing comprehensive, multidisciplinary maintenance and improvement solutions for customers across Australia and internationally, through a network of supporting workshops and operations in key regional areas, within the resources, energy and industrial sectors. Our expertise encompasses a wide range of services including the planning, management and execution of mechanical and electrical maintenance and project services, shutdowns, civil and infrastructure works, fixed plant maintenance services, access solutions, specialist coatings and rail maintenance services.

We have been part of the local community in the Hunter Valley and Newcastle region, for over 16 years, proud to be providing jobs in Mining, Mineral processing, and Heavy Industry for this region.

Safety is at the forefront of everything we do, and we live by our promise:The Safe Way is the Only Way. A career at Monadelphous is a career with a difference.Make it yours.