Location: Portsmouth, 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.
At Thales, we're at the forefront of underwater defence technology, delivering advanced sonar and sensing capabilities that help navies around the world maintain operational advantage and protect what matters most.
We are looking for a Head of Field Services for our Under Water Systems business (UWS). You will be responsible for a multi disciplined team of around 35 engineers deployed across the UK and overseas, the Head of Field Services ensures that UWS UK Field Services is prepared and resourced to meet the business need and the demand of our customer ensuring the availability of systems and assets, in both the sub surface and surface domains.
This is a strategic role that ensures UWS UK Field Services is the right size and shape and has the correct skills, tools and training in place to ensure it can meet the needs of UWS both now and in the future.
About Under Water Systems
Our purpose is to be the leading provider of underwater sensors and decision superiority, helping navies across the world remain operationally ready and mission effective.
Our business spans:
Location – Plymouth/Portsmouth/Templecombe/Cheadle/Bristol/Faslane
What You'll Be Doing
What We're Looking For
Why Join Thales?
You'll play a key role in supporting some of the UK's most advanced underwater defence systems while developing your career within a global technology and defence organisation.
Benefits include:
Security Clearance Requirement:
UK Eyes Only:
Due to the nature of the work that we do at Thales, many of our roles are subject to security restrictions. This role requires you to be a UK National and achieve Security Clearance (SC) without any caveats. 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. If approved by the MOD, a dual national from a non-ITAR country may be considered.
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!

Thales (Euronext Paris: HO) is a global leader in advanced technologies for the Defence, Aerospace, and Cyber & Digital sectors. Its portfolio of innovative products and services addresses several major challenges: sovereignty, security, sustainability and inclusion.
The Group invests more than €4 billion per year in Research & Development in key areas, particularly for critical environments, such as Artificial Intelligence, cybersecurity, quantum and cloud technologies.
Thales has more than 83,000 employees in 68 countries. In 2024, the Group generated sales of €20.6 billion.