At Monz Aviation GSE, we're more than a service provider - we're a trusted partner to the aviation and defence industries. Since 2019, we've built a reputation for technical excellence, customer care, and reliable support. Now, we're looking for a highly capable Office Administrator with strong accounting experience to join our close-knit team in Tullamarine.

What you'll be doing:

This is a dynamic and fast-paced role for someone who enjoys variety, responsibility, and autonomy. You'll play a central role in supporting both finance and operations, with tasks ranging from accounts management to supplier coordination, inventory, and administration.

Key Responsibilities:

• End-to-end Accounts Receivable & Payable in Xero
• Bank reconciliations, cash flow monitoring, and journal entries
• Inventory management (Products & Services in Xero)
• Invoicing, credit checks, supplier onboarding & payment follow-up
• Organising freight & courier logistics, packing and dispatching sales orders
• Office administration: filing, document management, supply ordering
• Travel bookings, team support, and liaising with our Auckland office
• Supporting project admin and contributing to process improvements

What we're looking for:

• 5+ years' experience in office admin/accounting roles, with at least 3 years in AP/AR
• Xero experience is essential (Comprehensive version - inventory, multi-currency)
• Strong skills in Microsoft Office, especially Excel
• High attention to detail and accuracy - you can spot errors others miss
• A proactive, self-starting attitude - you get things done without being chased
• A calm, flexible nature - you're unfazed by shifting priorities
• Strong written and verbal communication skills - with emotional intelligence

Nice to have:

• Experience working in mid-sized or multi-site businesses
• Qualifications in Accounting, Finance, or Business Admin

Why Join Monz Aviation GSE?

• Flexible working hours - early start, early finish options
• Free on-site parking & on-site café
• Small, friendly, and hands-on team
• Genuine ownership and autonomy in your role
• Opportunities to grow, improve systems, and make a real impact
• Be part of a trusted name in the aviation and defence industry
• Family-owned business with a 25-year legacy

Note: A current police check is required for this role.

Apply now

If you're an organised, adaptable, and detail-oriented professional who thrives in a fast-moving environment, we'd love to hear from you. Apply now and bring your experience to a team that values initiative, integrity, and growth.

At Horner we recognise the value of a diverse workforce and the creation of inclusive workforce cultures. We actively encourage applications from any background.

We provide reasonable adjustments for individuals with disability - please email [email protected] if you require an adjustment to be made during the recruitment process. Please note that applications or resumes sent to this email address will not be accepted or responded to.