127 Principal Engineer jobs in Merseyside

Job Title: Principal Engineer – Product Safety

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

Salary: Competitive

What you’ll be doing:

• Responsible for leading a small team developing a functional Safety Case
• Managing the production of a functional Safety Case to a defined schedule, reporting to a Safety Engineering Manager
• Undertaking complex safety analysis using techniques such as Fault Tree analysis and Event Tree Analysis
• Producing written function safety justifications
• Liaising with a wide range of stakeholders both external and internal to the business, typically System Engineers, Human Factors Subject Matter Experts (SME) etc…

Your skills and experiences:

Essential:

• STEM Degree or relevant experience
• Experience with leading a small team
• Experience in Delivering functional Safety Cases

Desirable:

• Previous submarine experience, Particularly Vehicle Control
• Knowledge of Complex Control Systems

Benefits:

As well as a competitive pension scheme, BAE Systems also offers employee share plans, an extensive range of flexible discounted health, wellbeing and lifestyle benefits, including a green car scheme, private health plans and shopping discounts – you may also be eligible for an annual incentive.

The Product Safety Team:

The team foundations are based on honesty and trust, contributing to a great working environment to allow personal growth and development leading to career progression opportunities. 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, rewards integrity, and merit, and where you’ll be empowered to fulfil your potential. We welcome candidates from all backgrounds and particularly from sections of the community who are currently underrepresented within our industry, including women, ethnic minorities, people with disabilities and LGBTQ+ individuals. We also 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: 16th 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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Job Title: Principal Systems Engineer (Part Time or Full Time)

Location: Great Baddow, Chelmsford or Isle of Wight – Cowes, or Portsmouth – Broad Oak

Salary: Up to £75,900 commensurate with skills and experience. Part time & accruing hours available’ Please let us know if you would like to discuss these options.

Put yourself into a dynamic Principal Systems Engineering role at the forefront of real world demands in the defence industry. You will be developing current and next generation radar products to counter emerging threats and gain an advantage in the strategic Future Air Dominance domain. Your new day-to-day will be exciting and diverse by applying the principles of Systems Engineering across the entire engineering development lifecycle as you join in developing radar systems used by those who serve and protect us.

What you’ll be doing:

• Develop novel solutions to evolving technical challenges and emerging issues for complex Multi-Function Radar Systems that our customers and end-user communities are facing

• Apply a breadth of knowledge, skills and experience of Systems Engineering principles, techniques and governance to steer and develop technical solutions and resolve engineering issues

• Conduct system design analysis to manage trade-offs of system parameters to characterise and specify robust product design

• Lead the decomposition of requirements to system and sub-system level and manage these in an approved toolset such as IBM DOORS Next

• Be a technical focus point with a holistic understanding of a whole system solution leading analysis activities and system design decisions and providing guidance to own team

• Collaborate with specialists across different engineering disciplines including electronics, electrical, mechanical and software to direct and realise overarching system design solutions

• Direct and undertake system integration, test planning and execution

• Define and articulate system acceptance strategies and acceptance evidence demonstrating system performance across a wide range of operational scenarios to internal and external stakeholders

• Through these activities you will build your personal profile with senior stakeholders and grow a diverse knowledge base in engineering

Your skills and experiences:

Essential:

• A good understanding in some of the following subject areas; signal processing, target track extraction, object classification algorithms, system and sensor resource optimisation

• A good understanding of factors that can affect the real-world performance of sensing systems and how these can impact the accuracy and timeliness of measurements in order to meet challenging design objectives and requirements

• Demonstrates understanding and experience of Systems Engineering which could include knowledge of Systems Engineering standards (e.g., ISO 15288)

• Experience of presenting both technical and non-technical information in a formal setting

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 Radar Software Team:

You will be working as a Principal Systems Engineer within our close-knit multi-function radar team of inter-disciplinary engineers, evolving our radar portfolio of existing and brand-new radar products to address emerging and future threats in the realm of Future Air Dominance.

This role is a fantastic opportunity to enhance your skills and invest in your career journey within a global business. You will be supported in growing your knowledge in contemporary and cutting-edge Radar techniques, with opportunities to develop your skills and responsibilities in technical leadership.

In this role, you will be able to enjoy both flexible and hybrid working arrangements. However, because of the importance and security classification of the projects you will be involved in, there will be a regular requirement for you to work on site so you can collaborate closely with the rest of your team.

Our workplace in Cowes is an easily accessible commute from Southampton with a regular foot passenger ferry and BAE shuttle service from the ferry terminal to site.

As the world has evolved, so has the way we work. Our working approach, will enable you to have flexibility with your working hours, depending on your role and location. This could include part time hours, accruing hours as well as flexibility around start and finish times, ensuring you can balance life at work, on site and life at home.

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: 16th 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.

#LI-AL1 #LI-Hybrid

Job title: Principal Systems Engineer

Location: Cowes, Broad Oak, Great Baddow – Part time & accruing hours available. Please let us know if you would like to discuss these options

Salary: Up to £75,900 (dependent on skills and experience)

Put yourself into a dynamic Principal Systems Engineering role at the forefront of real world demands in the defence industry. Alongside ensuring operational excellence for our existing products, there will be the opportunity to develop next generation radar products to counter emerging threats and contribution to our strategy for new technology. Your new day-to-day will be exciting and diverse by applying the principles of Systems Engineering across the entire engineering development lifecycle as you join in developing radar systems used by those who serve and protect us.

What you’ll be doing:

• Develop novel solutions to evolving technical challenges and emerging issues for complex Radar Systems that our customers and end-user communities are facing

• Apply a breadth of knowledge, skills and experience of Systems Engineering principles, techniques and governance to steer and develop technical solutions and resolve engineering issues

• Conduct system design analysis to manage trade-offs of system parameters to characterise and specify robust product design

• Lead the decomposition of requirements to system and sub-system level and manage these in an approved toolset such as IBM DOORS Next

• Be a technical focus point with a holistic understanding of a whole system solution leading analysis activities and system design decisions and providing guidance to own team

• Collaborate with specialists across different engineering disciplines including electronics, electrical, mechanical and software to direct and realise overarching system design solutions

• Direct and undertake system integration, test planning and execution

• Define and articulate system acceptance strategies and acceptance evidence demonstrating system performance across a wide range of operational scenarios to internal and external stakeholders

• Through these activities you will build your personal profile with senior stakeholders and grow a diverse knowledge base in engineering

Your skills and experiences:

• A good understanding in some of the following subject areas; signal processing, target track extraction, object classification algorithms, system and sensor resource optimisation

• A good understanding of factors that can affect the real-world performance of sensing systems and how these can impact the accuracy and timeliness of measurements in order to meet challenging design objectives and requirements

• Demonstrates understanding and experience of Systems Engineering which could include knowledge of Systems Engineering standards (e.g., ISO 15288)

• Experience of presenting both technical and non-technical information in a formal setting

Benefits:

As well as a competitive pension scheme, BAE Systems also offers share plans, an extensive range of flexible discounted health, wellbeing and lifestyle benefits, including a green car scheme, private health plans and shopping discounts – you may also be eligible for an annual incentive.

The Radar Systems Engineering team:

You will be working as a Principal Systems Engineer within our close-knit multi-function radar team of inter-disciplinary engineers, evolving our radar portfolio of existing and brand-new radar products to address emerging and future threats . This role is a fantastic opportunity to enhance your skills and invest in your career journey within a global business. You will be supported in growing your knowledge in contemporary and cutting-edge Radar techniques, with opportunities to develop your skills and responsibilities in technical leadership

In this role, you will be able to enjoy both flexible and hybrid working arrangements. Our workplace in Cowes is an easily accessible commute from Southampton with a regular foot passenger ferry and BAE shuttle service from the ferry terminal to site.

As the world has evolved, so has the way we work. Our working approach, will enable you to have flexibility with your working hours, depending on your role and location. This could include part time hours, accruing hours as well as flexibility around start and finish times, ensuring you can balance life at work, on site and life at home

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: 22nd 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.

#LI-AP1 #LI-Onsite

Principal Mechanical Engineer - Nuclear & Green Energy Projects
Location: UK-wide (Hybrid Working Available)
Hours: 37-hour working week
Clearance Required: British Nationals only (BPSS minimum)
Are you a highly skilled Principal Mechanical Engineer with a background in regulated industries? Are you ready to make a real impact on innovative green energy and nuclear defence projects?
Our client is a leading consultancy in the Nuclear and Defence sector, delivering high-profile projects across the UK. Known for their commitment to staff development, cutting-edge work, and long-term career opportunities, they offer a dynamic and forward-thinking environment for ambitious engineers.
Why Join This Team?
·Be part of landmark government projects with a strong mechanical engineering focus
·Continuous professional development with support for further qualifications
·Flexible hybrid working and a comprehensive benefits package
·Join a collaborative, high-performing team that values innovation
Key Responsibilities:
·Lead and uphold engineering standards and procedures across all technical activities
·Collaborate with clients to understand and deliver on mechanical requirements
·Produce and review engineering calculations, drawings (2D/3D), and technical documentation
·Mentor and develop technical capabilities within the team
About You:
·HND/HNC or Degree in Mechanical Engineering (or related discipline)
·Chartership or working towards it
·Strong track record of delivering complex, regulated projects
·Confident team leader with a passion for high performance
Security Clearance:
Due to the nature of the work, all applicants must be British Nationals and eligible for BPSS clearance as a minimum.
Ready to take the next step in your engineering career?
Contact Kent Streek at (url removed) or call (phone number removed) to learn more or apply.

Principal Mechanical Engineer

Location: Warrington, Manchester (Hybrid, 3 days/week onsite)

Contract: 12 months

Rate: 57-78/hr (Umbrella, Inside IR35)

Security Clearance: Must be eligible for SC

Are you an experienced Mechanical Engineer with a background in defence, nuclear, or high-integrity engineering projects?

We're recruiting multiple Senior and Principal Mechanical Engineers to support cutting-edge, safety-critical programmes across the UK's defence infrastructure. This is a long-term opportunity with a leading engineering consultancy delivering strategic work across secure sites.

Projects You'll Support

You'll play a key role on a range of high-profile Defence programmes, including:

• Major decommissioning and infrastructure upgrades at a leading defence establishment
• Submarine decommissioning demonstrator development for the UK MoD at Rosyth
• Technical support frameworks for the Defence Infrastructure Organisation (DIO)

Key Requirements

• Degree in Mechanical Engineering (BEng/MEng)
• Chartered Engineer (CEng)
• Experience in the nuclear or defence sectors
• Strong background in Mechanical Engineering
• Proficient with Autodesk Inventor
• Proven experience with mechanical or manual handling systems
• Eligible for SC clearance (must have lived and worked in the UK for the past 5 years)

Why Apply?

This is a unique opportunity to influence nationally significant programmes, working with expert teams in an environment that values innovation, safety, and high standards.

Interested?

Apply today with your CV and availability, or contact me directly for more info. Candidates with prior defence or nuclear site experience are strongly encouraged to get in touch.

A leading nuclear engineering company is looking for a principal mechanical engineer to join the team on a long term contract basis for some of their most exciting projects in the nuclear space.

• Job Role - Principal Mechanical Engineer
• Location - Warrington
• Contract Length - 12 Months
• Pay Rates - Up To £75 hour Inside IR35

This role will be perfect for a well experienced and knowledgeable Principal Mechanical Engineer who has vast time spent in the highly regulated fields and sectors associated.

Key Competencies:

• Understand concepts and principles, shapes, designs, developments and determines a solution to functional issues.
• A full knowledge and understanding of all health and safety matters.
• Work as the subject matters expert and mechanical engineering specialist.
• Technically manage the scope of engineering to ensure it meets project quality requirements and deadlines.
• Ensure that procedures, codes and standards are correctly identified and applied to engineering and technical activities.
• Ensure adequate review, verification and approvals are undertaken on all deliverables.
• Ensure you are supervising engineers and technical specialists to align with project scope.

Essential Qualifications:

• Engineering degree in a relevant field with significant demonstratable experience.
• Chartership (Desired)
• Time spent in managing teams
• Experience covering a wide range tasks across a range complexities.

Please note this role will require security clearance
If you are qualified and interested in the role, please call me on (phone number removed) or email me at (url removed)