Principal Systems Engineer

BAE Systems; Barrow-in-Furness; Hybrid; GBP 50,000 - 75,000; Full time

Job summary

BAE Systems is seeking a Principal Systems Engineer to manage the entire engineering lifecycle of Computerised Information Systems (CIS). The role involves interpreting user needs, supporting system integration activities, and liaising with senior stakeholders. Candidates should possess a STEM degree and expertise in naval communication systems. This position offers hybrid working arrangements, competitive benefits, and relocation support. Join an inclusive culture that values diversity and integrity, making a real impact in the defence sector.

Benefits

Competitive pension scheme

Enhanced annual leave allowance

Company contributed Share Incentive Plan

Flexible working options

Employee assistance programme

Cycle2work scheme

Employee discounts

Annual incentive eligibility

Qualifications

• Strong knowledge of requirements, system design, and integration.
• SME experience in naval communication systems.
• Proven record in managing senior stakeholders.

Responsibilities

• Derive technical and functional requirements for CIS.
• Manage and deliver design studies for CIS performance.
• Produce and lead technical design documentation.

Skills

Knowledge of key lifecycle phases

Developing naval communication systems

Data processing and analysis software

Experience managing stakeholder relations

Product safety awareness

Education

STEM related degree

Job description

Job Title: Principal Systems Engineer

Location: Barrow – We offer a range of hybrid and flexible working arrangements – please speak to your recruiter about the options for this particular role.

Salary: Negotiable dependant on experience

What you’ll be doing:

• Understand and interpret the User Needs, Concept of Operations, and Concept of Use, and be able to derive the technical and functional requirements for the Computerised Information System (CIS)
• Provide specialist knowledge and subject matter expertise to develop the functional and physical architecture for CIS
• Manage and deliver design studies to develop or de-risk technologies to evolve the functional performance and capability of CIS
• Produce technical design documentation to define the CIS design baseline and lead key decision meetings associated with the CIS design
• Provide specialist technical support to the planning and definition of platform installation, integration activities and commissioning activities

Your skills and experiences:

• Knowledge of key lifecycle phases including requirements, system design, and system integration and acceptance
• SME Domain experience developing naval communication systems and products
• Experience in data processing and analysis software, in the maritime, defence and/or commercial domains and their delivery into platform build programmes
• STEM related degree or equivalent experience within the aerospace/defence/marine environment
• Experience managing and liaising with senior Stakeholders
• Robust awareness of product safety, product security and SHE

Benefits:

You’ll receive benefits including a competitive pension scheme, enhanced annual leave allowance and a Company contributed Share Incentive Plan. You’ll also have access to additional benefits such as flexible working, an employee assistance programme, Cycle2work and employee discounts – you may also be eligible for an annual incentive

The Combat Systems Team:

The CIS Principal Engineer will be responsible for managing the overall engineering lifecycle from requirements elicitation through to system deployment and operation. You will also apply your subject matter expertise and domain experience to systems engineering practices, supporting the Engineering Manager. You will have opportunities to directly liaise with Senior Internal and External Stakeholders, and for self-development and opportunities, to build yourself a lasting career with BAE Systems.

We offer relocation support packages across all Submarines roles, subject to meeting eligibility criteria.

Why BAE Systems?

This is a place where you’ll be able to make a real difference. You’ll be part of an inclusive culture that values diversity of thought, rewards integrity, and merit, and where you’ll be empowered to fulfil your potential. We welcome people from all backgrounds and want to make sure that our recruitment processes are as inclusive as possible. If you have a disability or health condition (for example dyslexia, autism, an anxiety disorder etc.) that may affect your performance in certain assessment types, please speak to your recruiter about potential reasonable adjustments.

Please be aware that many roles at BAE Systems are subject to both security and export control restrictions. These restrictions mean that factors such as your nationality, any nationalities you may have previously held, and your place of birth can restrict the roles you are eligible to perform within the organisation. All applicants must as a minimum achieve Baseline Personnel Security Standard. Many roles also require higher levels of National Security Vetting where applicants must typically have 5 to 10 years of continuous residency in the UK depending on the vetting level required for the role, to allow for meaningful security vetting checks.

Closing Date: 8th July 2025

We reserve the right to close this vacancy early if we receive sufficient applications for the role. Therefore, if you are interested, please submit your application as early as possible.

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