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Principal Electronics Engineer

Thales

Belfast Hybrid permanent

Posted: March 25, 2026

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Quick Summary

Principal Electronics Engineer is a key role that involves designing and developing electronic systems for various military and defense applications, working with a team to deliver operational advantage.

Job Description

Location: Belfast, United Kingdom

Thales people architect solutions that are relied upon to deliver operational advantage at every decisive moment throughout the mission. Defence and armed forces customers rely on us to deliver the full range of defensive systems for land, sea, and air. From early warning, to threat neutralisation, our platforms cover all levels from very short-range systems, to extended protection across the entire battle-space including Airspace Mobility Solutions, Vehicles and Tactical Systems and Missile Defence, Optronics, and Radar.

Together we offer fantastic opportunities for committed employees to learn and develop their career with us. At Thales UK, we research, develop, and supply technology and services that impact the lives of millions of people each day to make life better, and keep us safer. We innovate across the major industries of Aerospace, Defence, Security and Space. Your health and well-being matters to us and that’s why we offer you the flexibility to do what’s important to you; whether that’s part time hours, job sharing, home working, or the ability to flex your start and finish times. Where possible, we support a working pattern that suits your lifestyle and helps you reach your ambitions.

Principal Electronics Engineer

Belfast – Hybrid

Who We Are

Thales Integrated Airspace-protection Systems (IAS) UK designs and manufactures a range of cutting-edge technologies ranging from air surveillance and mission planning systems to missiles. The company specialises in lightweight missiles and the integration of weapon systems into various platforms along with the systems to manage and exploit critical mission planning and air surveillance data. Belfast is also home to the Thales’s global Space Electric Propulsion Integration Centre.

Why Join Us

• Principal opportunity within our world class Electronics Team
• Exciting role with an industry leader undergoing significant growth
• Work alongside from some of the best Engineers in the industry
• An industry leading salary
• Outstanding benefits package

The Role

As a Principal Electronics Engineer you will be expected to mentor, guide and lead others in the design of state-of-the-art electronic systems that deliver world-class performance. You will be working and developing alongside a multi-disciplinary team of 35 Electronics Engineers, who are some of the most experienced Engineers in the industry.

Your role will span the entire product lifecycle from design requirements capture and analysis through to defining the system architecture and designing, building, testing and verifying that the solution meets the customer’s requirements.

The Principal Electronics role requires working within the team to optimise the design through trade-offs, studies, analyses, modelling and simulation to produce a best-in-class competitive product. Your responsibilities will include:

• Lead in the design of circuit assemblies and systems
• Develop electronic architectures to meet design requirements
• Lead component and sub-system selection and manage evaluation activities
• Lead the creation of electronic schematics and PCB layout
• Define testing, validation and debug of circuit assemblies
• Support development and integration testing of electronic assemblies
• Creation of electronics specifications, development and verification plans
• Responsible for compliance to regulatory standards
• Contribute to bid and estimating activities

What are we looking for from you.

• A relevant Engineering, Scientific or Numerate degree with demonstrate a deep understanding of electronic circuit design
• Considerable, relevant, experience in at least one of the following areas:• Power Electronics
• Digital Electronics
• Analogue Electronics
• Electronics Architecture
• High Frequency Electronics

• Significant experience with electronics design and simulation tools
• Experience in design of equipment for safety critical environments
• Experience of requirements for DFT and DFM
• Solid, relevant, experience of analytical and problem solving
• Highly effectively communicator within a diverse, professional environment
• Self-motivated, able to lead and take the initiative
• Outstanding team working skills
• Experience of mentoring and coaching others

Transferrable skills may be considered where an application does not meet all the required criteria

Security Clearance Statement

This role will require SC Clearance. It would be advantageous if currently held, however, if not currently held, it is a requirement that the successful applicant will undergo, achieve, and maintain SC Clearance.  Please visit the UKSV website for further guidance.

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. For further details of the evidence required to apply for Baseline and Security Clearance please refer to the National Security Vetting (NSV) Agency - United Kingdom Security Vetting - GOV.UK (www.gov.uk)

What we can offer

We are committed to giving you opportunities to be your best. We believe in embracing the passion and potential of our people, and to achieve this we offer market leading training, development and experiences, along with the opportunity to be mentored and coached by some of the smartest minds in the industry. We hire from within as our first priority, so you’ll have a myriad of opportunities within our diverse, global organisation.

Our packages will include significant bonus, a strong pension contribute, private healthcare, development focused targets and relocation support can be provided if required along with a variety of learning, development and career enhancement opportunities. Further support can be provided towards academic and membership attainments.

#LI-CL1

In line with Thales' Baseline Security requirements, candidates will be asked to provide evidence of identity, eligibility to work in the UK and employment and/or education history for up to three years. Some vacancies may require full Security Clearance which can require further evidence to be provided. For further details of the evidence required to apply for Baseline and Security Clearance please refer to the Defence Business Services National Security Vetting (DBS NSV) Agency.

At Thales we provide CAREERS and not only jobs. With Thales employing 80,000 employees in 68 countries our mobility policy enables thousands of employees each year to develop their careers at home and abroad, in their existing areas of expertise or by branching out into new fields. Together we believe that embracing flexibility is a smarter way of working.

Thales UK is committed to providing an inclusive and barrier-free recruitment process. We will provide reasonable adjustments and support to ensure neuro-diverse applicants or those with a disability or long-term condition can be their best during the recruitment process. To request an adjustment, if you need this job advert in an alternative format or if you have any questions about the recruitment process, please contact Resourcing Ops for mid to senior roles, or the Early Careers Team for graduate and apprentice roles.

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