McMahon Services is one of Australia’s largest privately owned construction, industrial and environmental services organisations, employing more than 1,300 people across Australia.

Our people are at the heart of what we do. We offer a supportive and collaborative environment where you can learn, develop your skills and build a long-term career while contributing to projects that support communities across Australia.

About the Role

We’re looking for an organised, approachable and proactive Office Administrator to join our Northern Territory team in Darwin.

You’ll play an important role in keeping our office running smoothly, providing day-to-day administrative support to our team and being a friendly first point of contact for clients and visitors.

From coordinating travel and managing office supplies to supporting events, purchase orders and internal communications, this is a varied role with plenty of opportunity to learn.

You don’t need to know everything from day one. If you’re organised, enjoy helping people and have a positive attitude, we’ll provide the support and exposure to help you develop your administration career.

What You’ll Do

- Welcome clients and visitors and provide a friendly, professional first point of contact.
- Manage incoming calls, enquiries and the administration inbox.
- Coordinate flights, accommodation and other travel arrangements.
- Order and maintain stationery, office supplies and staff amenities.
- Help keep meeting rooms and shared office areas organised.
- Assist with internal communications, including posters and invitations.
- Support company events and office activities.
- Raise purchase orders and assist with basic procurement and supplier administration.
- Provide general administrative support to the wider NT team.

What You’ll Bring

- A positive, can-do attitude and willingness to learn.




- Strong communication and interpersonal skills.
- Good organisational skills and attention to detail.
- Confidence using computers and willingness to learn new systems and software.
- Ability to manage multiple priorities in a busy environment.
- A reliable and professional approach.
- Ability to work independently while also being part of a team.

What Will Set You Apart

- Previous experience in administration, reception or customer service.
- Confidence learning new systems and processes.
- A proactive approach and willingness to pitch in when needed.
- Ability to build positive working relationships with different people across the business.
- Initiative and the confidence to take ownership of tasks through to completion.

Why Join McMahon Services?

- Build your career with one of Australia’s leading privately owned construction companies.
- Join a supportive and welcoming Darwin team.
- Enjoy a varied role with exposure across different parts of the business.
- Genuine opportunities for career development and progression.
- Access to our in-house MAC Learning Academy for ongoing learning and development.
- A workplace that values safety, wellbeing, teamwork and continuous improvement.

Ready to Get Started?

Whether you already have some administration experience or you’re looking for an prospect to build your skills and develop your career, we’d love to hear from you.

Apply today and join the McMahon Services team in Darwin.

No recruitment agencies please.

At McMahon Services, we embrace diversity and inclusion as fundamental values. We believe that a diverse workforce fosters innovation, creativity and a deeper understanding of the communities we serve. We are committed to creating an inclusive environment where all employees feel valued, respected and empowered to contribute their unique perspectives and talents. We encourage applications from people of all backgrounds, identities and experiences.

📌 Office Administrator (Darwin)
🏢 Mcmahon Services
📍 Darwin