Are you a proactive, organised, and confident Executive Assistant looking for a role where you can truly make an impact?
Do you thrive in fast‑paced environments, enjoy supporting senior leaders, and take pride in delivering exceptional work?

If so, the Sizewell C Geotechnical Sub Alliance (GSA) is ready to welcome you.

About the role:

As Executive Assistant to the Project Director and GSA Delivery Leadership Team, you’ll be the organisational heartbeat of the project. You’ll provide high‑level administrative, analytical, and logistical support to ensure leaders can operate at their best.

No two days will be the same — this role offers variety, autonomy, and the opportunity to contribute to meaningful milestones.

Key Responsibilities

• Overseeing multiple senior diaries and optimising schedules


• Producing polished reports, presentations, and confidential documentation


• Screening communications and responding on behalf of executives


• Arranging meetings, conferences, and travel (UK & overseas)


• Coordinating project events, community engagement, and charity initiatives


• Running data analysis, reports, and supporting ad‑hoc project tasks


• Building strong relationships across the project team and wider stakeholders


• Keeping accurate and secure records, always ensuring confidentiality

What We’re Looking For

Our ideal candidate will have:

• Proven experience as an Executive Assistant or senior administrator


• Outstanding organisational skills and a proactive, solutions‑driven mindset


• Confidence managing multiple priorities in a busy team environment


• Ability to build rapport at all levels, quickly and effectively


• Excellent IT skills (Microsoft Office & SharePoint)


• Strong attention to detail and high levels of discretion


• A flexible, resilient, and forward‑thinking attitude

If you’re self‑motivated, enthusiastic, and excited about the chance to support a dynamic leadership team within a major national project, we want to hear from you.