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Thales

Head of Sites and Security

Oxford, England, United Kingdom (city only)

Full-time

First seen by offpeak October 21, 2026

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Location: Oxford, United Kingdom

Thales is a global technology leader with more than 83,000 employees on five continents. With over 7,500 people in the UK, operating across defence, space, aerospace, and digital security, we help build a future we can all trust. Thales supports the security and stability of our nation by providing extraordinary technology to our customers, as well as delivering social value to the UK with our products and services.

Join Thales Alenia Space UK in a key role safeguarding our sites, people and operations. We are recruiting for a Head of Sites and Security to join our Operations Management Team and lead critical areas of our business, spanning Site Management, Health, Safety and Environment (HSE) and Security.
The successful candidate will oversee the effective management of the company’s Real Estate, primarily located in Harwell, Oxfordshire; and lead the day to day and strategic Security Operations of TAS UK.


Governments and private industry rely on us to create satellite‑based systems that provide trusted, anytime‑anywhere connectivity and positioning—helping care for our planet, manage its resources thoughtfully, and explore our Solar System with curiosity and purpose. We view space as a new horizon for collective progress, shaping a more sustainable life on Earth. As a joint venture between Thales (67%) and Leonardo (33%), Thales Alenia Space partners with Telespazio through the Space Alliance to deliver a full suite of integrated solutions and services.


Main Responsibilities


Ideal Experience & Skills


Benefits


Security Clearance Requirement:

Due to the nature of the work that we do at Thales, many of our roles are subject to security restrictions.  This role requires Security Clearance (SC). It would be advantageous if currently held, however, if not currently held, it is a requirement that the successful applicant undergo, achieve, and maintain SC Clearance prior to commencing employment. 

 

To be eligible for full SC, you generally need to have resided in the UK for the last 5 years.  In some circumstances, a minimum of 3 years’ residence in the UK over the last 5 years may be accepted, with additional overseas checks.

 

Please visit the UKSV website for further guidance: 

https://www.gov.uk/government/publications/united-kingdom-security-vetting-clearance-levels/national-security-vetting-clearance-levels.


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At Thales, we ensure equal opportunities, pay and working conditions for all. The benefits we offer include private medical insurance, buying or selling annual leave, cycle to work schemes, employee discounts, paid volunteering day, stocks and shares, annual bonus and much more depending on the role. Read more about our benefits here.
 

We are committed to creating a workplace where everyone feels valued for who they are and the unique strengths they bring. Discover more about our programmes, employee networks, wellbeing policies, and inclusive features here.

 

If this role isn’t quite right for you, we encourage you to join our talent community where your details will be shared with our recruitment teams for other potential opportunities. Join the Talent Community here.


Join Thales in the UK – Innovate with us and shape the future!