System Engineer

X4 Technology; Southampton; Hybrid; GBP 60,000 - 80,000; Full time

Benefits offered by this job

Excellent Benefits

Job summary

X4 Technology in Southampton is seeking a Systems Engineer to shape the future of UK Defence training through secure, integrated simulation platforms. You will work on architecture, systems integration, verification, and deployment across a major defence programme with hybrid onsite collaboration three days per week.

Join a team delivering mission-critical defence training technology, collaborating with stakeholders and industry partners to enable secure, scalable solutions.

Qualifications

• Systems engineering experience in defence or regulated sectors.
• MBSE, SysML or ArchiMate proficiency.
• Experience with system integration and lifecycle verification & validation.
• Knowledge of Secure-by-Design principles and cybersecurity awareness.

Responsibilities

• Define, integrate and deliver complex defence systems across simulation and training platforms.
• Collaborate with architects and engineering teams through architecture, integration, verification, and deployment phases.
• Design and integrate systems from concept to delivery using MBSE.
• Support migration of legacy data into modern Defence environments.

Skills

MBSE

SysML

ArchiMate

Systems integration

Requirements mgmt

Configuration mgmt

V&V

Secure-by-Design

Data integration

Stakeholder comms

Tools

CI/CD

IaC

Job description

Systems Engineer | Defence & Simulation | Southampton | Hybrid (3 Days Onsite) | Competitive Salary + Excellent Benefits

Shape the Future of UK Defence Training

Are you a Systems Engineer looking to work on technology that genuinely makes a difference?

We're recruiting for an exciting opportunity to join a major UK Defence programme delivering the next generation of military training and simulation capability. You'll be working on cutting-edge systems that help prepare the British Army for future operations, developing secure, highly integrated solutions that have a real-world impact.

This is an opportunity to collaborate with some of the UK's leading Defence organisations and technical experts on a programme at the forefront of innovation.

The Opportunity

As a Systems Engineer, you'll play a key role in the definition, integration and delivery of complex Defence systems across advanced simulation and training platforms.

Working alongside Enterprise Architects and multidisciplinary engineering teams, you'll contribute throughout the engineering lifecycle, from architecture and systems integration through to verification, validation and deployment.

You'll have the opportunity to:

• Design and integrate complex Defence systems from concept through to delivery.
• Develop system architectures using Model-Based Systems Engineering (MBSE).
• Deliver secure, mission-critical solutions using Secure-by-Design principles.
• Support integration, verification, validation and acceptance activities.
• Contribute to the migration and integration of legacy data into modern Defence environments.
• Work closely with military stakeholders, engineering teams and industry partners to shape the future of Defence training technology.

What We're Looking For

We're interested in speaking with Systems Engineers who enjoy solving complex technical challenges within Defence or other highly regulated industries.

You'll ideally have experience with:

• Systems Engineering within Defence, Aerospace or other safety-critical sectors.
• Model-Based Systems Engineering (MBSE), SysML or ArchiMate.
• Systems integration, requirements management and configuration management.
• Verification & Validation (V&V) across the system lifecycle.
• Secure-by-Design principles and cybersecurity awareness.
• Data integration, migration and ETL processes.
• Strong stakeholder engagement and technical documentation skills.

Experience in any of the following would be beneficial:

• Defence or MOD programmes.
• Simulation, synthetic training or mission systems.
• Embedded systems or electronics.
• DevSecOps, CI/CD or Infrastructure as Code (IaC).
• Integrated Logistics Support (ILS).
• Reliability, Availability & Maintainability (RAM).
• Safety assurance and environmental compliance.
• Secure data environments or Government Furnished Information (GFI).

Hybrid Working

This role offers a collaborative hybrid working model with 3 days per week onsite at the client's state-of-the-art engineering and innovation centre in Southampton.

The onsite element is an integral part of the role, giving you the opportunity to collaborate closely with engineering teams, work hands-on with cutting-edge technology and engage directly with key programme stakeholders, while still benefiting from the flexibility of hybrid working.

Why Join?

This is far more than just another Systems Engineering role.

You'll be joining a programme of national importance where your work will directly contribute to the future capability of UK Defence. You'll tackle technically challenging projects, work alongside industry-leading engineers and have genuine influence over the development of next-generation training and simulation systems.

Alongside meaningful work, you'll benefit from a supportive culture that values innovation, collaboration and continuous professional development.

• Available on request - some of the best on the market!