Senior Executive Assistant to the CEO

Senior Executive Assistant to the CEO

The Clean Air Fund is looking to recruit a Senior Executive Assistant to the CEO to join their team in London. This is an exciting opportunity to join a rapidly growing organisation whose mission is to use philanthropic grants to catalyse a reduction in air pollution.

The Senior Executive Assistant sits at the centre of the CEO Office. The role combines exceptional execution of core Executive Assistant responsibilities (diary and inbox management, administration and logistics) with strong judgement and discipline in managing how the CEO’s time and commitments are prioritised and supported.

The role involves managing a demanding and fast-changing workload, and coordinating across multiple internal and external stakeholders to ensure the CEO’s schedule, commitments and logistics are well planned, executed smoothly, and run predictably—with no gaps or last-minute issues.

Working closely with the Chief of Staff, the postholder will operate independently within clear parameters, exercising sound judgement and escalating where additional input is required. They will also play a key role in bringing structure, discipline and consistency to how the organisation works with the CEO, including continuously improving processes, standards and ways of working.

Success in the role depends on delivering consistent, high-quality execution, maintaining strong forward planning, and anticipating needs several steps ahead - knowing when to be flexible and enabling, and when to hold the line to protect the CEO’s time.

What we are looking for:

• Significant experience as a senior Executive Assistant (or equivalent) supporting senior leaders with high-level external profiles, demanding schedules and high standards.
• Exceptional organisational skills and impeccable attention to detail; highly reliable and consistent
• Experience improving or establishing processes and ways of working that have strengthened prioritization and effectiveness of leadership and how the organization supports them
• Strong interpersonal skills. The ability to easily build trust and rapport with colleagues and stakeholders, to navigate and influence across teams, working collaboratively while holding people to deadlines and expectations
• Experience working across a range of cultural and socio-economic contexts, adapting style appropriately
• Excellent written and verbal communication
• Proficient in using the latest Microsoft 365 tools, comfortable with cloud-based platforms like Microsoft Teams and SharePoint, adaptable to new ways of working, and an excellent understanding of basic cyber security and data protection hygiene.

For more information on this role, as well as the full person specification please see the job description

• Closing date – 1st July 2026
• Salary – Depending on experience
• Type of employment- Full-time

At Clean Air Fund, we’re guided by purpose and grounded in evidence. Our culture combines clear structures and rigorous frameworks with space for fresh thinking and collaboration across diverse perspectives. We value curiosity, openness and a shared commitment to making a measurable difference.

As an employer, we are committed to ensuring the representation of people from all backgrounds regardless of their gender identity or expression, sexual orientation, race, religion, ethnicity, age, neurodiversity, disability status, returning parents, carers or any other aspect which makes them unique. We particularly welcome applicants from under-represented groups to apply and would encourage you to let us know if there are steps we can take to ensure that the recruitment process enables you to present yourself in a way that makes you comfortable. We are committed to ensuring the safety and protection of our employees from all forms of harm.