Executive Assistant

Role overview

The Infrastructure Sustainability Council (ISC) is seeking an Executive Assistant based in Melbourne to provide high-level administrative, coordination, and governance support. ISC is a member-based not-for-profit industry council and certified social enterprise focused on improving sustainability outcomes across infrastructure. Its work includes the third-party assured IS rating scheme, capability building through training, infrastructure innovation through advocacy and R&D, and member support through awards, events, working groups, and thought leadership.

Purpose and values

ISC’s purpose is to enable connected infrastructure that helps people thrive on a healthy planet. The organisation’s values are expertise, partnership, impact, and care. The role sits at the centre of internal and external coordination and helps maintain smooth communication across a geographically dispersed team and with external stakeholders.

Reporting and working relationships

This position reports to the Chief Executive Officer. It works closely with the Executive Director of Stakeholder Services, the Executive Director of Product Solutions, Board members, the Strategic Projects Lead, and the wider ISC team. The role also liaises with the Company Secretary and supports board-related interactions.

Key responsibilities

• Support the CEO by anticipating, organising, and preparing for meetings and other engagements.
• Manage the CEO’s calendar and email correspondence across multiple time zones, including scheduling meetings, appointments, and travel.
• Coordinate calendars for the Executive Directors of Product Solutions and Stakeholder Services, including follow-up on calls, emails, and meetings as needed.
• Act as a point of contact for executives, employees, the Board, and external stakeholders, ensuring timely and accurate information exchange.
• Carry out research on clients, individuals, organisations, and business topics.
• Assist in preparing presentations for the CEO.
• Help deliver employee initiatives, including the annual employee engagement survey and associated action plan.
• Support ad hoc projects and organisation-wide administrative work.
• Coordinate internal meetings such as weekly and monthly full-team meetings, including external speakers and ongoing improvements to meeting effectiveness.
• Handle general administration duties and step in for unplanned business needs when required.

Experience and knowledge required

Candidates should have prior experience in an Executive Assistant or Personal Assistant role and have worked with executives and boards. Experience with governance tasks such as board minutes, resolutions, action registers, and AGM preparation is important. Strong computer literacy is needed, especially in Microsoft Office, along with openness to learning new technologies. The role also requires excellent organisation, the ability to stay flexible in a fast-paced environment, strong interpersonal and customer service skills, and a work style that supports a healthy, collaborative team culture. The successful applicant must be able to work both independently and as part of a team.

Desirable background

A relevant qualification is preferred. Experience in a member-based association, not-for-profit organisation, or social enterprise would be an advantage.

Core competencies

• Be proactive and ready to anticipate needs before issues arise.
• Maintain a strong eye for detail and produce clear, polished communication materials.
• Communicate effectively in writing and verbally with different audiences.
• Work in line with ISC’s values and demonstrate integrity, trustworthiness, and ethical judgement.
• Show understanding of governance and board processes, including AGM preparation and board support.
• Stay organised while managing competing priorities across executive workloads.
• Take a practical, solution-focused approach to challenges.
• Support the team with a collaborative, service-oriented mindset.

Work arrangement

This is a full-time position, with a working schedule of 38 hours per week. The role is based onsite in Melbourne, Australia.

Application information

Applications close on 13 July 2026.

Additional information

Approved by the Chief Executive Officer.

The source material refers to a full role description available through an external document, but no additional details beyond those captured here are included in the provided text.