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EXPLEO is a world leader in missile systems design and manufacture. We pride ourselves on innovation, collaboration, and delivering cutting-edge solutions to meet the defence needs of our customers. As a Senior Systems Engineer, you'll play a key role in shaping the development of complex systems that ensure our ongoing success.

The Opportunity
As a Senior Systems Engineer at EXPLEO, you will take technical ownership of significant areas of complex projects, working across the full systems engineering lifecycle. This is a highly collaborative role that provides the opportunity to influence system architectures, guide design processes, and mentor junior engineers.

Lead and contribute to the systems design and architecture of advanced systems, ensuring customer requirements are met.
Deliver high-quality outputs across the full systems lifecycle, including requirements capture, system modelling, design, verification, and validation.
Support trade-off studies and develop solutions to complex technical challenges.
Lead and coordinate system-level analysis, integration, and testing activities.
Interface with internal teams, customers, and suppliers to define system requirements and manage system-level decisions.
Produce technical documentation, including system design descriptions, interface control documents, and test specifications.
Provide mentorship and technical guidance to less experienced engineers.
Drive continuous improvement, ensuring systems engineering best practices and processes are followed.Qualifications

Degree-qualified in a relevant discipline such as Systems Engineering, Aerospace Engineering, Electrical/Electronic Engineering, or Physics.Essential skills

Demonstrable experience in systems engineering within the defence, aerospace, or similar high-integrity industry.
Strong understanding of systems engineering processes, methodologies, and tools (e.g., MBSE, SysML, DOORS).
Experience across the full systems lifecycle, from concept development to validation and verification.
Ability to perform trade-off studies and analyse system performance to meet technical, cost, and schedule constraints.
Knowledge of complex system architectures, such as weapon systems, avionics, or missile systems.
Effective communicator, able to work collaboratively across teams and disciplines.
Experience with system modelling tools (e.g., MATLAB, Simulink, Rhapsody) is advantageous.
Ability to work in a regulated environment with awareness of defence standards and safety-critical design.What do I need before I apply

Due to the nature of the work at EXPLEO, applicants must be eligible for UK Security Clearance.Benefits

Collaborative working environment - we stand shoulder to shoulder with our clients and our peers through good times and challenges
We empower all passionate technology loving professionals by allowing them to expand their skills and take part in inspiring projects
Expleo Academy - enables you to acquire and develop the right skills by delivering a suite of accredited training courses
Competitive company benefits
Always working as one team, our people are not afraid to think big and challenge the status quo
As a Disability Confident Committed Employer we have committed to:
Ensure our recruitment process is inclusive and accessible
Communicating and promoting vacancies
Offering an interview to disabled people who meet the minimum criteria for the job
Anticipating and providing reasonable adjustments as required
Supporting any existing employee who acquires a disability or long term health condition, enabling them to stay in work at least one activity that will make a difference for disabled people"We are an equal opportunities employer and welcome applications from all suitably qualified persons regardless of their race, sex, disability, religion/belief, sexual orientation or age".

We treat everyone fairly and equitably across the organisation, including providing any additional support and adjustments needed for everyone to thrive