Office Administrator

Gamuda Group; City of Parramatta; On-site; AUD 70,000 - 90,000; Full time

Benefits offered by this job

Career growth

Supportive culture

Competitive remuneration

Job summary

Gamuda Australia is seeking a proactive Office Administrator to support the Parramatta ISD project on-site. You will manage day-to-day site office operations, document control, and coordination across engineering, commercial, and site leadership teams.

Based in Parramatta, this hands-on role requires 2–4 years of site administration experience, strong MS Office skills, and the ability to handle multiple tasks in a fast-paced construction environment.

Qualifications

• 2–4 years' experience in site or project administration within construction or infrastructure.
• Experience with document management systems (TeamBinder, ACC, Aconex, SharePoint) for transmittals.
• Proficiency in MS Office with strong attention to detail.
• Excellent organisational and communication skills.

Responsibilities

• Oversee day-to-day site office operations and coordinate facilities, maintenance, and PPE orders.
• Assist with project document control, registers, transmittals, and version control.
• Process site financial records including invoices, expense claims, and subcontractor documents.
• Coordinate site onboarding, inductions, visitor logs, and compliance records.
• Provide administrative support to site leadership, commercial, and engineering teams.
• Manage site correspondence, filing, meeting packs, and general admin duties.

Skills

Site administration

Project coordination

Communication skills

Tools

TeamBinder

ACC

Aconex

SharePoint

Job description

Gamuda Engineering is a global engineering and construction leader specialising in the design, delivery, and maintenance of major Transport, Civil, and Energy Infrastructure projects. In Australia, our footprint is expanding rapidly through major city-shaping packages for Sydney Metro - including the Western Tunnelling Package and the Stations Package West (SPW) -alongside landmark joint-venture developments such as the $1.35B Coffs Harbour Bypass and the $1B M1 Motorway Extension.

Following our successful award of the Parramatta Integrated Station Development (ISD), which includes station box excavation and integrated station infrastructure at Parramatta, we are mobilising a high-performing project delivery team and building an innovative, inclusive culture positioned as an employer of choice.

About the Role

Based on-site in Parramatta, we are seeking a proactive, highly organised Office Administrator to support our site office operations, project administration, and document control functions for the Parramatta Integrated Station Development (ISD) project. In this hands-on operational role, you will be vital to maintaining smooth day-to-day site office workflows, managing administrative systems, coordinating site records, and providing dedicated administrative support across our engineering, commercial, and site leadership teams.

Key Responsibilities

• Oversee day-to-day site office operations, coordinating office facilities, cleaners, office maintenance/defects, and site consumable/PPE orders with vendors.
• Assist with project document control, maintaining accurate document registers, issuing transmittals via TeamBinder/SharePoint, and ensuring strict version control.
• Process site financial records including invoice verification, credit card reconciliations, expense claims, purchase requisitions, and subcontractor payment documentation.
• Coordinate site onboarding activities, site inductions, visitor logs, and compliance records across project administration systems for staff and sub-contractors.
• Provide high-level administrative support to site leadership, commercial, HSEQ, and engineering teams - including calendar management, meeting coordination, agendas, and monthly report collation.
• Manage site correspondence, filing systems, printing/collating of meeting packs, and general administrative duties to maintain an efficient project office environment.

Skills and Experience

• 2–4 years' experience in a Site Administrator, Office Administrator, or Project Administration role within construction, civil engineering, or major infrastructure projects.
• Practical experience using document management systems (e.g., TeamBinder, ACC, Aconex, or SharePoint) for transmittals and records management.
• Strong proficiency across MS Office Suite (Word, Excel, PowerPoint, Outlook) with exceptional attention to detail in formatting, filing, and data entry.
• Outstanding organizational and multi-tasking abilities with a proven track record managing competing priorities in a fast-paced site environment.
• Strong written and verbal communication skills with a positive, collaborative approach to building relationships with site engineers, clients, and suppliers.

What We Offer

• Central administrative role on the city-shaping Parramatta Integrated Station Development project.
• High-performing, supportive site culture backed by a Tier-1 global engineering group.
• Competitive remuneration package with clear administrative and project coordination career growth pathways.

Gamuda Australia encourages and supports a diverse and inclusive workforce, including candidates from overseas and current Visa holders.