Systems Engineer

Job Title – Systems Engineer

Job Location – Bristol or Portchester, UK

Job ID – 47277

About this opportunity and L3Harris UK

Operating at 9 sites in the United Kingdom, L3Harris supports Britain's mission to secure and strengthen the country by delivering sovereign innovation across the space, air, land, sea and cyber domains.

L3Harris’ Bristol location is the Headquarters for our Maritime UK business – a leading global supplier of integrated marine control systems and simulation products for warships, submarines and high-end commercial marine vessels worldwide. Since its inception, L3Harris has continuously iterated upon our Integrated Platform Management System (IPMS) technology and successfully exported and delivered the system to over 300 vessels across 27 navies worldwide. We have additional Maritime UK sites in Barrow-In-Furness and Portchester. Together, we are powering the Royal Navy’s adoption of autonomous surface vehicle technology as well as delivering autonomous capability to UK ports, harbours and offshore energy service providers.

As a Specialist Systems Engineer, you will play a key role in the delivery of complex hardware development programmes, working across mechanical, electrical, and integrated system solutions. You will be responsible for developing and managing system requirements, architectures, interfaces, and baselines throughout the engineering lifecycle.

Working closely with multi-disciplinary teams, you will ensure the successful integration, verification, and validation of system solutions that meet performance, cost, and schedule objectives. You will provide technical leadership, manage engineering risks and issues, and support the delivery of compliant, high-quality solutions for our customers.

A few of our employee benefits are:

• 37.5 hour working week


• Hybrid working where possible, three days onsite per week


• Half day finish on a Friday


• 25 days holiday per year (plus bank holidays), increasing with long service and with the opportunity to buy/sell up to 5 days


• Private medical insurance with optional family cover


• Pension scheme of up to 8% employer contribution


• Life Assurance 4x salary (flexible up to 10x)


• Group income protection


• Flexible opt-in extras such as a health care cash plan, dental insurance, gym membership, critical illness cover, cycle to work scheme, travel insurance and electric car scheme


• Employee Family Assistance Program providing mental health and wellbeing support


• Professional membership reimbursement (discretionary)

What the role will involve

The responsibilities of your role will include the following:

• Lead Systems Engineering activities across complex engineering programmes.


• Develop, capture, and manage system requirements, architectures, interfaces, and design baselines.


• Coordinate cross-functional engineering teams to support successful programme delivery.


• Plan and oversee system verification and validation activities, ensuring all requirements are met.


• Identify, manage, and mitigate technical risks and issues throughout the project lifecycle.


• Provide technical guidance and support to project teams and stakeholders.


• Contribute to the delivery of solutions that achieve customer, cost, schedule, and performance objectives.

What you’ll bring 

The role requires the following experience and skills:

• Prior related full lifecycle Systems Engineering experience


• Strong planning, communication, and stakeholder management skills.


• Strong requirements engineering experience, including elicitation, analysis, validation, and management.


• Solid understanding of systems engineering principles, including system hierarchy, boundaries, interfaces, partitioning, and complexity management.


• Experience working on hardware-based engineering programmes.


• Experience working within defence, aerospace, or similarly regulated engineering environments.


• Proficiency in IBM DOORS is essential.


• Experience with System Architect, Rhapsody, or other MBSE tools would be advantageous.

Important to know

Due to the nature of our work many our roles require a UK nationality and the ability to obtain a security clearance. Applicants who accept a conditional offer of employment must meet the requirement of right to work in the UK and must meet eligibility requirements for access to classified information and will be subject to government security checks.

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