Job Description
Executive Assistant and Office Administrator (Part-Time)
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nxzen (formerly Enzen Australia) is a global technology, consulting and engineering partner. We help energy, utilities, and national infrastructure providers optimise performance, digitise operations, and enhance resilience-combining deep domain expertise with innovative technology.
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Our purpose is to advance the national infrastructure that society depends on.
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About the ROLE
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Sydney 25 hours/week
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Permanent Part-time - hours spread across 4-5 days per week
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We are seeking a highly organised and proactive Executive Assistant & Office Administrator to support the CEO and ensure the smooth day-to-day operation of the nxzen offices. The role covers executive support, diary and travel management, meeting coordination, office management and general administration. You will play a key role in keeping priorities on track and supporting the effective operation of the wider business.
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Key responsibilities for the role include:
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Provide day-to-day executive support to the CEO, including diary management, correspondence, meeting coordination and general administration.
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Coordinate travel, accommodation and itineraries for the CEO and other staff as required.
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Organise meetings, including agendas, supporting materials, note-taking and follow-up of actions.
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Liaise with senior leaders, clients and external stakeholders on behalf of the CEO, and prepare presentations, reports and communications as required.
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Manage day-to-day office operations across all offices, including visitors, security access, stationery, deliveries and supplies.
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Coordinate facilities and service providers, including building management, cleaners and contractors.
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Plan and coordinate corporate events, leadership meetings and other business functions.
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Maintain office systems and records, improve administrative processes, and support WHS activities including office inspections, hazard reporting and maintaining a secure workplace.
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Support employee onboarding and inductions, including IT equipment, workstation setup, office access, key processes, systems and company information.
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Maintain confidentiality when handling sensitive information and undertake other reasonable administrative duties or projects as directed by the CEO, Head of Operations and Head of People & Culture.
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About YOU
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3+ years' experience in an Executive Assistant, Personal Assistant, Office Administrator or similar role, with experience supporting senior executives.
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Strong organisational, administrative and time-management skills, with excellent attention to detail and the ability to manage competing priorities.
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Excellent written and verbal communication skills and strong Microsoft Office capability.
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Professional, reliable and proactive, with the ability to work independently and show initiative.
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High level of discretion and professionalism when handling confidential information.

📌 Executive Assistant And Office Administrator (Part-Time) (New South Wales)
🏢 nxzen
📍 New South Wales