Perik.ai See who’s hiring. Apply before everyone else.
← Back to all jobs

Principal Systems Engineer - Electronic Warfare

Thales
📍 Crawley 📅 Posted May 2, 2026
Apply on Thales’s website →

About this role

Location: Crawley, 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.

Principal Systems Engineer - Electronic Warfare

Crawley - Hybrid

Thales Intelligence, Surveillance and Reconnaissance (ISR) UK is a principal supplier of Unmanned Aerial Systems (UAS), Electronic Warfare (EW) and Radar equipment to the UK armed forces, as well as an exporter of these capabilities worldwide.

We are looking for senior engineers with the skills and experience to enhance our Electronic Warfare portfolio, delivering cutting edge products including:

• Digital Radar Electronic Support Measures (RESM) that provides situational awareness and identify threats even in busy Electronic Transmission Environments
• Radar Electronic Countermeasures (RECM) that can protect assets by denying tactical advantage and distracting incoming threats.

We are seeking an Principal Systems Engineer with experience of working within the field of Electronic Warfare, or related fields such as RESM, CESM, ECM or similar. You will have prior knowledge of the key principles of the domain and can quickly grasp the science and technology that sits behind a modern digital EW suite. You may have a military background, having operated EW equipment in the field, or have worked in the design, development or testing of similar products.

Role Description

As a Principal Systems Engineer within Thales, you will:

• Analyse and understand customer needs through advanced studies, simulations, mock-ups, models, prototypes, …
• Formalise specifications and architecture used to propose the best solution / product to your clients
• Prepare and carry out integration, verification and validation tests  
• Define test plans and procedures for system level testing
• Ensure the technical integration and coherence of the system design, interfaces, and performances.
• Support design of the systems architecture
• Demonstrate the solution to the customer

Principal Relationships

• Electronic Warfare Product Line Engineers, Architects and Managers
• EW Project Delivery Teams (including Project Management)
• Domain Technical and Engineering Managers
• Domain Functional Management
• The wider multi-discipline engineering team

Profile of the successful individual

• You have graduated with a degree from a University (Electronics, Aeronautical/Space Engineering, Computer Science, Physics, Mathematics …)
• You have a proven experience in Systems Engineering and/or Software, Hardware, and IVVQ activities
• You want to update your expertise continuously and design innovative solutions to fit your customers’ needs
• You want to strengthen your expertise inf the following areas: conception, requirement management, development, test, integration or validation
• You want to solve complex problems and be plunged into a challenging environment
• You are recognised as a team player and enjoy collaborative work
• You are a mentor willing to share knowledge

Competencies

• You can quickly understand the system in which you involve (key stakeholders, interactions, products, environment …)
• You know what a design-to-cost approach means
• You are able to adapt and react to change
• You are familiar with management and engineering tools such as DOORS, Polarion, JIRA
• You have experience with leading engineering projects or activities

Desired Knowledge or Skills

• Signal Processing or
• Communication Systems or
• RF Systems (EW, CESM, Comms) or
• RF Performance Modelling/Budgets;
• System Specification & Design (SSS/TRS)

Your Career At Thales UK

Future opportunities will allow you to discover other domains or sites. You will be able to evolve and grow your Competencies in different areas:

• Room and attention to personal development 
• Build your talents in another domain of Thales Group, discovering new products, new customers, new country or go to a more complex Solution 
• Choose between a technical expertise or a leadership path
• Build an international career within a leading Engineering Group

Security Clearance statement

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 sole British National from birth 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. Please visit the UKSV website for further guidance- United Kingdom Security Vetting - GOV.UK (www.gov.uk)

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.

#LI-CL1

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!

This listing was aggregated by Perik.ai from Thales’s public job board. Click the button above to view the full job description and apply directly.
Explore more jobs
More from Thales Browse all AI & tech jobs

Perik.ai is an AI & tech job board that aggregates the latest openings from top companies — updated daily so you can apply before everyone else.

About FAQ Privacy Policy Terms of Service Contact