Executive Assistant to CEO — Multi-Site, Space Tech

Thales; Harwell; On-site; GBP 40,000 - 52,000; Full time

Job summary

Thales Alenia Space UK is seeking a proactive Personal Assistant to the CEO to be the operational backbone of UK leadership across Harwell and Bristol. You will maximise the CEO’s time, ensure smooth office operations, and uphold confidentiality.

Responsibilities include diary management, complex travel via Concur, expenses, document production, and multi-site office oversight. Executive support and stakeholder relationship building are essential in this fast-paced, confidential role.

Qualifications

• Proven experience as Personal/Executive Assistant supporting C-suite or senior leaders in a fast-paced, confidential environment.
• Advanced MS Office 365 skills – Excel, Word and PowerPoint.
• GCSEs (or equivalent) in English, Science and Maths.
• Exceptional attention to detail, written communication and stakeholder management across multi-site teams.

Responsibilities

• Own the CEO’s diary end-to-end: schedule internal/external meetings, prioritise and drive actions to completion.
• Manage complex travel and logistics via Concur (flights, hotels, itineraries, visas) in line with policy.
• Handle expenses reconciliation, credit card statements, and raise purchase orders.
• Produce high-quality documents and presentations in MS Office.
• Operate with discretion as a trusted gatekeeper to the CEO.
• Oversee day-to-day office management at Harwell (and support Bristol).
• Build stakeholder relationships with Facilities/Front of House and campus management.
• Hold key-holder responsibilities and travel between sites as needed.
• Run end-to-end meeting support for SLT and committees (agendas, minutes, actions).
• Prepare PowerPoint decks and support major projects and leadership meetings.
• Support onboarding with local induction packs.

Skills

Executive support

Diary management

Discretion

Stakeholder management

Organisation

Education

GCSEs in English, Science & Maths

Tools

MS Office 365

Concur

Tribelloo

Viva Engage

Teams

Job description

Thales Alenia Space UK is seeking a proactive Personal Assistant to the CEO to be the operational backbone of UK leadership across Harwell and Bristol. You will maximise the CEO’s time, ensure smooth office operations, and uphold confidentiality.

Responsibilities include diary management, complex travel via Concur, expenses, document production, and multi-site office oversight. Executive support and stakeholder relationship building are essential in this fast-paced, confidential role.