Interim EA · Fractional EA (Sustainability Charity) Roles, UK

01Executive Assistant to Sustainability Charity CEO (Part-Time)

Hours: 20 hours per week (0.5 FTE)

Working pattern: Minimum four days per week, primarily mornings (GMT/CET)

02Sector: International Not-for-Profit / Sustainability

Reporting to: Chief Executive Officer

03The Opportunity

We are seeking an experienced, proactive and highly organised Executive Assistant to provide high-level support to the CEO of an international, purpose-driven organisation operating within the sustainability sector.

This is an excellent opportunity for a confident and resourceful Executive Assistant who thrives in a fast-paced, international environment and enjoys bringing structure, efficiency and calm to a busy executive's schedule.

Working closely with the CEO, you will take ownership of complex diary and inbox management, coordinate meetings across multiple time zones, manage correspondence and ensure the CEO is well prepared for key engagements.

The successful candidate will be someone who anticipates needs, exercises excellent judgement and can manage competing priorities with professionalism and discretion.

04Executive Support & Diary Management

• Manage a complex and frequently changing CEO diary, coordinating meetings across international time zones.
• Proactively prioritise appointments, resolve scheduling conflicts and protect time for strategic priorities.
• Manage and organise the CEO's inbox, identifying urgent matters and drafting or responding to correspondence where appropriate.
• Anticipate requirements, manage competing demands and adapt quickly to changing priorities.

05Meeting Coordination & Communications

• Coordinate meeting preparation, including agendas, briefing documents, presentations and supporting materials.
• Liaise with internal teams and external stakeholders to ensure information is received ahead of deadlines.
• Draft professional correspondence and communications on behalf of the CEO.
• Support meeting follow-up, tracking actions, commitments and deadlines.
• Build strong working relationships with colleagues, external contacts and other executive assistants.

06Travel & Administrative Support

• Arrange international travel, accommodation and detailed itineraries.
• Coordinate logistics for events, briefings, interviews and other executive engagements.
• Provide responsive day-to-day administrative support, handling urgent requests with efficiency and professionalism.
• Maintain the highest standards of confidentiality, discretion and information security.

07About You

We are looking for an accomplished Executive Assistant with proven experience supporting a CEO or similarly senior executive, ideally within an international organisation.

08Essential Experience

• Significant experience providing executive support to a CEO or senior leader.
• Demonstrable ability to manage complex diaries and schedules across multiple time zones.
• Experience working in a fast-paced environment where priorities can change at short notice.
• Strong inbox and correspondence management skills, including drafting communications on behalf of senior executives.
• Experience coordinating meetings, preparing briefing materials and managing follow-up actions.
• Advanced proficiency in Microsoft 365, particularly Outlook, Teams, Word and PowerPoint.
• Excellent written and verbal English communication skills.

09Key Skills & Attributes

• Highly organised, detail-oriented and able to manage multiple priorities independently.
• Proactive and solutions-focused, with the ability to anticipate requirements.
• Confident exercising judgement and knowing when to escalate sensitive or urgent matters.
• Calm, adaptable and resilient under pressure.
• Excellent interpersonal skills and the ability to build trusted relationships with a diverse range of stakeholders.
• Discreet and professional, with a strong commitment to confidentiality.
• Comfortable working independently and collaborating with internationally distributed teams.
• Strong problem-solving skills and a positive, can-do attitude.

10Desirable Experience

• Experience supporting senior executives within an NGO, not-for-profit, sustainability or climate-related organisation.
• Experience working within a small, remote or globally distributed team.
• Experience preparing meeting notes, minutes and tracking actions.

11Working Arrangements

This is a part-time position of 20 hours per week, spread across a minimum of four days.

Hours will primarily be worked in the mornings, aligned with GMT or CET time zones. Some flexibility will be required to accommodate the CEO's international schedule and occasional changes in priorities.

12Why Apply?

This is an opportunity to work closely with a senior leader in an internationally focused, purpose-driven organisation.

The role offers variety, responsibility and the opportunity to make a meaningful contribution by ensuring the CEO can operate effectively in a busy and dynamic environment.

13To Apply

Please submit your CV outlining your relevant executive support experience, particularly your experience supporting senior leadership in complex or international environments.