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System Integration & Test Engineer/ Senior System Integration & Test Engineers (Multiple Roles)

GDMSI

Oakdale, Wales, United Kingdom permanent

Posted: December 23, 2025

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Quick Summary

We are seeking a System Integration & Test Engineer/ Senior System Integration & Test Engineers to join our team in Oakdale, Wales, UK. The ideal candidate will have experience in system integration and testing, with a strong background in avionics and communication systems.

Job Description

General Dynamics Mission Systems engineers a diverse portfolio of high technology solutions, products and services that enable customers to successfully execute missions across all domains of operation. With a global team of more than 13,000 top professionals, we partner with the best in industry to expand the bounds of innovation in the defence and scientific arenas. In the UK, we are leading the way in avionics and communication systems. Given the nature of our work and who we are, we value trust, honesty, alignment and transparency.

We are hiring SI&T and Senior SI&T Engineers to join our team.

You will carry out system integration with hardware & software components in a Tactical C4I System, define & execute test cases, and carry out problem solving to identify defects and provide assurance & acceptance evidence for the system.

Tasks will be varied and include product & system integration, verification, validation, assurance & platform based testing with problem investigation and support for field based testing. The successful candidate will work within a multi-disciplined engineering team to deliver outputs that meet customer needs to defined quality standards within agreed timescales and budgets

Typical daily activities will include:

• Support the development of appropriate integration and test plans
• Support detailed planning to successfully execute integration and test activity
• Define test requirements, specifications, procedures and scripts with reference to system and product specification, design and use cases
• Execute defined integration activities
• Execute tests and manage test results and associated data
• Support the production of test reports and associated test conclusions
• Support status reporting of integration and test activities.
• Support build and test automation activity as well as the continuous improvement of integration and testing processes, procedures and tools.

• Broad competence in Systems Integration and Test, with experience in Tactical C4I Systems (knowledge of BCIP system is desirable)
• Strong understanding of tactical network infrastructures, including networks, radios, routers, switches, and system management
• Ability to orient issues within Internet and OSI-layered communications models - good understanding of messaging and routing protocols, TCP/IP, UDP, including those applicable to wireless and wired environments
• Proven methodical analytic fault-finding skills and ability to work in a technical laboratory environment
• Excellent written, verbal, and interpersonal communication skills, with proficiency in Microsoft applications
• Experience in practical systems engineering, integration, and test on large-scale Defence design and development programmes
• Hands-on experience in lab and field-based military systems testing, including equipment/system commissioning and fault finding
• Familiarity with engineering tools such as IBM DOORS, Rational Quality Manager, Rational Team Concert, or Microfocus ALM

Salary for this position is £36,000 to £60,000, depending on experience plus our excellent flexible benefits package.

Due to the nature of these roles they will mostly be based working on site - however some amount of home working may be possible depending on the tasks required on the individual projects.

Occasional travel may be required.

We pride ourselves in being a great place to work with a shared sense of purpose, offering impressive benefits: 

• A compressed nine-day fortnight and compressed hours - which means every other Friday off. 
• A personalized career development plan, alongside regular progress reviews - supporting and valuing your progression within the Company. 
• A flexible working environment where your contributions are recognized and rewarded with flexible benefits 

We believe in maintaining a diverse workplace - inclusive of beliefs, cultural background, job experiences, thoughts and ideas. If who we are and what we do resonates with you, we welcome you to join our inclusive team!

Our success is fuelled by our colleagues and the wide variety of backgrounds, perspectives, and skills they bring to the Company.

We are a Disability Confident Employer, as such we offer an interview to disabled people who meet the minimum criteria for the job.

Please email [email protected] if you would like your application to be considered under the DC Scheme.

All successful/appointed applicants must be able to obtain a level of UK Security clearance that is appropriate for the role and undertake suitable Right to work checks

Every application matters to us. We want you to know that each application we receive is reviewed by a real person—not just an algorithm. Our screening questions are also carefully considered to help us understand your experience and fit for the role.

We appreciate the time you take to apply.

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