Job Description

CREATE YOUR FUTURE AT ATC WILLIAMS!

About Us:

Renowned for our technical excellence, ATC Williams provides Tailings, Water, and Waste Management services to the mining, resources, and governments sectors. We are a leading specialised engineering and consulting firm with over 40 years of successful service to our clients.

With eight national office locations and a broad variety of international projects, we offer exciting and sustainable career pathways, whether you are a technical or professional leader, or just starting out in your career.

Why Join Us?

You will be joining our team at an exciting time as ATC Williams continue to solidify our position as a trusted and recognised engineering brand. We are embarking on a significant growth phase, represented by expansion in office locations, employees, opportunities, and capabilities.

About the Role:

Following an internal promotion, our Mordialloc office is currently seeking a Senior Office Coordinator on a permanent full-time basis.

The Senior Office Coordinator works closely with the Business Support team to look after the office, ensure the office building is maintained and that employees have the tools and resources they need to work, as well as providing high level administrative support as required.

Key responsibilities and activities include:

• Be the main point of contact for employee queries and manage and delegate as required.
• Manage a small team of office assistants and train new staff as required.
• Manage office and equipment maintenance for the office.
• Manage the office email inbox.
• Organise internal events and assist with organising external events, liaising with the Marketing team where required.
• Assist employees with travel arrangements.
• Coordination of end of month invoicing/supplier invoices.
• Assist technical staff with report compilation, formatting, uploading and sending to clients.
• Assist Business Support team with staff onboarding, offboarding tasks (inductions, car park allocations, maintain office key/swipe card system, updating staff lists/registers, updating team structures).

Knowledge, Skills and Experience requirements include:

• Previous experience in a senior administration role and/or office management role.
• A diploma and/or bachelor’s degree in business or business administration would be highly regarded.
• Advanced knowledge of Microsoft Office, particularly Outlook, Excel, Word and PowerPoint.
• Excellent communication skills, both written and verbal.
• Highly organised with the ability to prioritise workloads, meet deadlines and demonstrate flexibility in dealing with staff with competing demands.
• Be proactive and have a can-do attitude and taking initiative.
• Working with a diverse range of people.

What You Gain when you join ATC Williams

As an entirely employee-owned organisation with a retention rate to be proud of, our talented and skilled people acknowledge two key reasons why they choose to stay at ATC Williams:

• the depth and generosity of our in-house knowledge and expertise, and
• the fantastic opportunities available for personal growth and diverse project experiences, especially if you are prepared to grab these opportunities with both hands.

Employee Benefits include:

• Competitive remuneration package.
• Employee-owned company.
• Up to 20 weeks of fully paid parental leave for all parents.
• Career and personal development opportunities & mentoring.
• Flexible working arrangements available as required, noting that the particular responsibilities of the role do require predominantly office-based attendance.

At ATC Williams, we champion diversity, inclusion, integrity, and equal employment opportunities.

We encourage you to create your future at ATC Williams.

To apply, please provide a cover letter and CV as one attachment to your application and include:

• Rights to work in Australia (essential).
• Base Salary Package Expectation.
• Why you have applied for this role.
• Share your career aspirations with us.

Applications close Friday, 8 May 2026.

Please note ATC Williams does not accept unsolicited resumes from recruiters or employment agencies.