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Principal Mechanical Design Engineer


Plymouth, GB, PL1 4SG Rosyth, GB, KY11 2YD Bristol, GB, BS11 0YA

Onsite or Hybrid:  Hybrid

Job Title: Principal Mechanical Design Engineer
Location: Bristol or Plymouth or Rosyth, UK - Hybrid - working from home options available 
Compensation: Competitive Salary + benefits
Role Type: Full time / Permanent
Role ID: SF45689


Build the Future


At Babcock, we’re working to create a safe and secure world, together, and if you join us, you can play your part as a Principal Mechanical Design Engineer in Bristol, Plymouth or Rosyth.
As an international defence company, we support and enhance our customers’ defence and security capabilities and critical assets, meeting their requirements of value for money, increased availability, modernisation and flexibility.


Marine Engineering & Systems – Shipbuilding Export Variants


Principal Mechanical Design Engineer role is based within Marine Engineering & Systems – Shipbuilding Export Variants.


Babcock is rapidly establishing itself as an international Naval ship designer and builder. We have built on the success of the UK MoD Type 31 Frigate and have secured contracts for frigate export variants (AH140) with overseas customers. As well as supporting exports of frigates the engineering team is actively working on other ship newbuild and life extension programs around the world, from small fast attack craft all the way up to aircraft carriers.


We are looking to significantly expand our engineering and ship design teams in order to exploit these opportunities and so if you are interested in taking your career in an exciting new direction then consider Babcock for your next move.


You will join a national team of over 800 engineers and designers within the Marine Sector of Babcock.  We are a leading design consultancy providing naval architecture, marine system engineering, electrical engineering, design modelling and project support services to the marine and defence markets. We have base offices in Bristol, Rosyth or Plymouth, and offer flexible working with office attendance and travel to meet project requirements.


The role


The difference our new Principal Mechanical Design Engineer will make


As a Principal Mechanical Design Engineer, you’ll have a role that’s out of the ordinary. This is a highly prestigious position within our complex shipbuilding programme, developing designs through concept and early-stage design as well as supporting the bidding process.


Day-to-day, you will be responsible for authoring, reviewing and substantiating Marine and Mechanical designs through calculations, simulations, commissioning and diagnostic test support. You will be required to contribute and lead product development throughout the design lifecycle and provide technical support to our key customers, ensuring efficient and effective delivery of engineering outputs. You will act as Technical Authorities and have deep subject knowledge of an aspect of Marine/Mechanical engineering.


Your primary deliverables are substantiation reports/designs for installation solutions; this can include development/analysis and/or verification/validation of Power and Propulsion designs, development of Auxiliary Ship Systems and/or HVAC for existing and new build/concept designs. In addition, you will lead design teams and other stakeholders throughout the design lifecycle to ensure coordination and functionality of design, including supporting design reviews, and act as Technical Authorities within your area of expertise.


You will have a high level of developed knowledge, the role is directly accountable for design development, and determines solutions to problems and issues within your specialist subject area. You will provide help and direction to less experienced team members to support both their effective working, and their development.


At Babcock, we have a history of helping talent go far. With our track record of innovation, you’ll continually develop your knowledge and expertise. 


We offer flexible working to give people more options to better integrate their work and personal life, whilst ensuring that business needs are met. This role provides flexible working with office attendance and travel to meet project requirements. We are happy to discuss this with you in more detail. 


Essential experience


  • Ideally, you will be Degree qualified but HND/HNC level qualification in an Engineering discipline with extensive experience in relevant field will be considered
  • You will be a member of a relevant institution (e.g. RINA, IET, IMechE, IMarEst etc.) and hold Chartered status
  • You will have proven design experience and demonstrable experience in CAD, FEA and CFD would be an advantage, as would experience of Power and Propulsion systems, Auxiliary Systems and HVAC
  • You will have experience in mechanical/marine engineering
  • Either already UK Security cleared or able for achieve UK SC clearance

What we offer


Generous benefits including:

  • Competitive holiday allowance
  • Reservist in the armed forces receive 10 days special paid leave 
  • Matched contribution pension scheme up to 8% of salary, with life assurance
  • Working from home and flexible work patterns 
  • Employee assistance programme supporting physical, mental and financial wellbeing 
  • Flexible benefits, including cycle to work scheme, discounts and our Share Ownership Scheme
  • Autonomy. Trusted and empowered to be at your best


Babcock International 


For over 130 years, we have helped to defend nations, protect communities and build a better world. To continue, we must adapt, advance and be a sustainable business with a shared goal. Change begins with our people and our shared Principles: be curious; be courageous; own and deliver; think: outcomes; collaborate; and be kind. These values not only guide the way we work, but also our efforts to reach net-zero carbon. Yes, our ambitions are big, but together, we can achieve them.


Armed Forces Covenant


We are proud to support the Armed Forces community by honouring the Armed Forces Covenant. If you are a reservist in the armed forces, we provide up to ten days special paid leave in support of your training commitments.
Application Guidance


All applications should be made online. If you have a disability or need any reasonable adjustments during the application and selection stages, please let us know. We’re committed to building an inclusive culture where everyone’s free to thrive.  We are happy to talk about flexible working - please ask about alternative patterns of work at interview.



Job Segment: Design Engineer, Mechanical Engineer, Electrical Engineering, Technical Support, Systems Engineer, Engineering, Technology

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