Executive Assistant and Office Administrator (Part-Time)

About nxzen

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.

Our purpose is to advance the national infrastructure that society depends on.

About the ROLE

• Sydney 25 hours/week

• Permanent Part-time - hours spread across 4–5 days per week

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.

Key responsibilities for the role include:

• Provide day-to-day executive support to the CEO, including diary management, correspondence, meeting coordination and general administration.

• Coordinate travel, accommodation and itineraries for the CEO and other staff as required.

• Organise meetings, including agendas, supporting materials, note-taking and follow-up of actions.

• Liaise with senior leaders, clients and external stakeholders on behalf of the CEO, and prepare presentations, reports and communications as required.

• Manage day-to-day office operations across all offices, including visitors, security access, stationery, deliveries and supplies.

• Coordinate facilities and service providers, including building management, cleaners and contractors.

• Plan and coordinate corporate events, leadership meetings and other business functions.

• Maintain office systems and records, improve administrative processes, and support WHS activities including office inspections, hazard reporting and maintaining a safe workplace.

• Support employee onboarding and inductions, including IT equipment, workstation setup, office access, key processes, systems and company information.

• 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.

About YOU

• 3+ years’ experience in an Executive Assistant, Personal Assistant, Office Administrator or similar role, with experience supporting senior executives.

• Strong organisational, administrative and time-management skills, with excellent attention to detail and the ability to manage competing priorities.

• Excellent written and verbal communication skills and strong Microsoft Office capability.

• Professional, reliable and proactive, with the ability to work independently and show initiative.

• High level of discretion and professionalism when handling confidential information.

How to APPLY

To apply, please submit a copy of your updated resume. Screening will be conducted as we receive applications, and ONLY shortlisted applicants will be contacted.

For more information or to have a confidential discussion, please contact ••••@nxzen.com.