Job Title: Principal Mechanical Design Engineer Location: Barrow-in-Furness. We offer a range of hybrid and flexible working arrangements - please speak to your recruiter about the options for this role Salary: Circa £55,000 What you'll be doing: Lead the end-to-end development of complex fluid systems, shaping designs that meet demanding performance and environmental requirements Create and review high-value engineering deliverables - for schematics and P&IDs to calculations, system descriptions, and 3D models Drive advanced system analyses , including flow, pressure, thermal, and transient modelling to validate performance under challenging conditions Select and assess critical equipment (pumps, compressors, valves, heat exchangers, filters, tanks), ensuring it meet tough submarine operating environments Champion technology integrity by reviewing supplier documentation, ensuring full compliance with shock, vibration, atmosphere, temperature,...

Job Title: Principal Mechanical Design Engineer Location: Barrow-in-Furness. We offer a range of hybrid and flexible working arrangements - please speak to your recruiter about the options for this role Salary: Circa £55,000 What you'll be doing: Lead the end-to-end development of complex fluid systems, shaping designs that meet demanding performance and environmental requirements Create and review high-value engineering deliverables - for schematics and P&IDs to calculations, system descriptions, and 3D models Drive advanced system analyses , including flow, pressure, thermal, and transient modelling to validate performance under challenging conditions Select and assess critical equipment (pumps, compressors, valves, heat exchangers, filters, tanks), ensuring it meet tough submarine operating environments Champion technology integrity by reviewing supplier documentation, ensuring full compliance with shock, vibration, atmosphere, temperature,...

Job Title: Principal Mechanical Design Engineer Location: Barrow-in-Furness. We offer a range of hybrid and flexible working arrangements - please speak to your recruiter about the options for this role Salary: Circa £55,000 What you'll be doing: Lead the end-to-end development of complex fluid systems, shaping designs that meet demanding performance and environmental requirements Create and review high-value engineering deliverables - for schematics and P&IDs to calculations, system descriptions, and 3D models Drive advanced system analyses , including flow, pressure, thermal, and transient modelling to validate performance under challenging conditions Select and assess critical equipment (pumps, compressors, valves, heat exchangers, filters, tanks), ensuring it meet tough submarine operating environments Champion technology integrity by reviewing supplier documentation, ensuring full compliance with shock, vibration, atmosphere, temperature,...

Job Title: Principal Mechanical Design Engineer Location: Barrow-in-Furness. We offer a range of hybrid and flexible working arrangements - please speak to your recruiter about the options for this role Salary: Circa £55,000 What you'll be doing: Lead the end-to-end development of complex fluid systems, shaping designs that meet demanding performance and environmental requirements Create and review high-value engineering deliverables - for schematics and P&IDs to calculations, system descriptions, and 3D models Drive advanced system analyses , including flow, pressure, thermal, and transient modelling to validate performance under challenging conditions Select and assess critical equipment (pumps, compressors, valves, heat exchangers, filters, tanks), ensuring it meet tough submarine operating environments Champion technology integrity by reviewing supplier documentation, ensuring full compliance with shock, vibration, atmosphere, temperature,...

Job Title: Principal Mechanical Design Engineer Location: Barrow-in-Furness. We offer a range of hybrid and flexible working arrangements - please speak to your recruiter about the options for this role Salary: Circa £55,000 What you'll be doing: Lead the end-to-end development of complex fluid systems, shaping designs that meet demanding performance and environmental requirements Create and review high-value engineering deliverables - for schematics and P&IDs to calculations, system descriptions, and 3D models Drive advanced system analyses , including flow, pressure, thermal, and transient modelling to validate performance under challenging conditions Select and assess critical equipment (pumps, compressors, valves, heat exchangers, filters, tanks), ensuring it meet tough submarine operating environments Champion technology integrity by reviewing supplier documentation, ensuring full compliance with shock, vibration, atmosphere, temperature,...

Job Title: Principal Mechanical Design Engineer Location: Barrow-in-Furness. We offer a range of hybrid and flexible working arrangements - please speak to your recruiter about the options for this role Salary: Circa £55,000 What you'll be doing: Lead the end-to-end development of complex fluid systems, shaping designs that meet demanding performance and environmental requirements Create and review high-value engineering deliverables - for schematics and P&IDs to calculations, system descriptions, and 3D models Drive advanced system analyses , including flow, pressure, thermal, and transient modelling to validate performance under challenging conditions Select and assess critical equipment (pumps, compressors, valves, heat exchangers, filters, tanks), ensuring it meet tough submarine operating environments Champion technology integrity by reviewing supplier documentation, ensuring full compliance with shock, vibration, atmosphere, temperature,...

Job Title: Principal Mechanical Design Engineer Location: Barrow-in-Furness. We offer a range of hybrid and flexible working arrangements - please speak to your recruiter about the options for this role Salary: Circa £55,000 What you'll be doing: Lead the end-to-end development of complex fluid systems, shaping designs that meet demanding performance and environmental requirements Create and review high-value engineering deliverables - for schematics and P&IDs to calculations, system descriptions, and 3D models Drive advanced system analyses , including flow, pressure, thermal, and transient modelling to validate performance under challenging conditions Select and assess critical equipment (pumps, compressors, valves, heat exchangers, filters, tanks), ensuring it meet tough submarine operating environments Champion technology integrity by reviewing supplier documentation, ensuring full compliance with shock, vibration, atmosphere, temperature,...

Job Title: Principal Mechanical Design Engineer Location: Barrow-in-Furness. We offer a range of hybrid and flexible working arrangements - please speak to your recruiter about the options for this role Salary: Circa £55,000 What you'll be doing: Lead the end-to-end development of complex fluid systems, shaping designs that meet demanding performance and environmental requirements Create and review high-value engineering deliverables - for schematics and P&IDs to calculations, system descriptions, and 3D models Drive advanced system analyses , including flow, pressure, thermal, and transient modelling to validate performance under challenging conditions Select and assess critical equipment (pumps, compressors, valves, heat exchangers, filters, tanks), ensuring it meet tough submarine operating environments Champion technology integrity by reviewing supplier documentation, ensuring full compliance with shock, vibration, atmosphere, temperature,...

Mechanical Engineering is excited to offer multiple opportunities for experienced Principal Mechanical Design Engineers, with roles available across all areas of the Product Life Cycle, from mechanical future concepts and detailed design through qualification, production, and in-service support. In these roles of responsibility, you will lead the development of mechanical solutions for a wide variety of complex weapons and weapon systems, working closely with multi-disciplinary teams across engineering, manufacturing, quality, and supply chain. You will be expected to provide technical leadership, drive design maturity, and act as a key interface with internal and external stakeholders. Salary: Circa £50,000+ depending on experience Location: Stevenage (relocation package may be available) Dynamic (Hybrid) Working: An average of 2-3 days per week on-site dependent on work classification Security Clearance: British Citizen or a Dual UK national with British citizenship....

Job Title: Principal Engineer -Site Asset Safety Verification Location: Barrow-in-Furness, Hybrid We offer a range of hybrid and flexible working arrangements - please speak to your recruiter about the options for this particular role Salary: £60,000 + depending on experience Who we are: Join BAE Systems and you'll be part of something bigger. As a valued member of our global colleague network, you'll bring your unique skills and perspectives to help pioneer progress and protect what matters most. You'll be trusted to play your part in delivering the advanced, technology-led defence, aerospace and security solutions of tomorrow, shaping a safer future, for all of us. From the depths of the ocean, to the far reaches of space, there's no limit to where a career at BAE Systems could take you. What you'll be doing: You'll be authoring and managing site assets' & infrastructure design substantiation documentation supporting the site nuclear safety case....

Job Title: Principal Engineer -Site Asset Safety Verification Location: Barrow-in-Furness, Hybrid We offer a range of hybrid and flexible working arrangements - please speak to your recruiter about the options for this particular role Salary: £60,000 + depending on experience Who we are: Join BAE Systems and you'll be part of something bigger. As a valued member of our global colleague network, you'll bring your unique skills and perspectives to help pioneer progress and protect what matters most. You'll be trusted to play your part in delivering the advanced, technology-led defence, aerospace and security solutions of tomorrow, shaping a safer future, for all of us. From the depths of the ocean, to the far reaches of space, there's no limit to where a career at BAE Systems could take you. What you'll be doing: You'll be authoring and managing site assets' & infrastructure design substantiation documentation supporting the site nuclear safety case....

Job Title: Principal Engineer -Site Asset Safety Verification Location: Barrow-in-Furness, Hybrid We offer a range of hybrid and flexible working arrangements - please speak to your recruiter about the options for this particular role Salary: £60,000 + depending on experience Who we are: Join BAE Systems and you'll be part of something bigger. As a valued member of our global colleague network, you'll bring your unique skills and perspectives to help pioneer progress and protect what matters most. You'll be trusted to play your part in delivering the advanced, technology-led defence, aerospace and security solutions of tomorrow, shaping a safer future, for all of us. From the depths of the ocean, to the far reaches of space, there's no limit to where a career at BAE Systems could take you. What you'll be doing: You'll be authoring and managing site assets' & infrastructure design substantiation documentation supporting the site nuclear safety case....

Job Title: Principal Engineer -Site Asset Safety Verification Location: Barrow-in-Furness, Hybrid We offer a range of hybrid and flexible working arrangements - please speak to your recruiter about the options for this particular role Salary: £60,000 + depending on experience Who we are: Join BAE Systems and you'll be part of something bigger. As a valued member of our global colleague network, you'll bring your unique skills and perspectives to help pioneer progress and protect what matters most. You'll be trusted to play your part in delivering the advanced, technology-led defence, aerospace and security solutions of tomorrow, shaping a safer future, for all of us. From the depths of the ocean, to the far reaches of space, there's no limit to where a career at BAE Systems could take you. What you'll be doing: You'll be authoring and managing site assets' & infrastructure design substantiation documentation supporting the site nuclear safety case....

Job Title: Principal Engineer -Site Asset Safety Verification Location: Barrow-in-Furness, Hybrid We offer a range of hybrid and flexible working arrangements - please speak to your recruiter about the options for this particular role Salary: £60,000 + depending on experience Who we are: Join BAE Systems and you'll be part of something bigger. As a valued member of our global colleague network, you'll bring your unique skills and perspectives to help pioneer progress and protect what matters most. You'll be trusted to play your part in delivering the advanced, technology-led defence, aerospace and security solutions of tomorrow, shaping a safer future, for all of us. From the depths of the ocean, to the far reaches of space, there's no limit to where a career at BAE Systems could take you. What you'll be doing: You'll be authoring and managing site assets' & infrastructure design substantiation documentation supporting the site nuclear safety case....

Job Title: Principal Engineer -Site Asset Safety Verification Location: Barrow-in-Furness, Hybrid We offer a range of hybrid and flexible working arrangements - please speak to your recruiter about the options for this particular role Salary: £60,000 + depending on experience Who we are: Join BAE Systems and you'll be part of something bigger. As a valued member of our global colleague network, you'll bring your unique skills and perspectives to help pioneer progress and protect what matters most. You'll be trusted to play your part in delivering the advanced, technology-led defence, aerospace and security solutions of tomorrow, shaping a safer future, for all of us. From the depths of the ocean, to the far reaches of space, there's no limit to where a career at BAE Systems could take you. What you'll be doing: You'll be authoring and managing site assets' & infrastructure design substantiation documentation supporting the site nuclear safety case....

Job Title: Principal Engineer -Site Asset Safety Verification Location: Barrow-in-Furness, Hybrid We offer a range of hybrid and flexible working arrangements - please speak to your recruiter about the options for this particular role Salary: £60,000 + depending on experience Who we are: Join BAE Systems and you'll be part of something bigger. As a valued member of our global colleague network, you'll bring your unique skills and perspectives to help pioneer progress and protect what matters most. You'll be trusted to play your part in delivering the advanced, technology-led defence, aerospace and security solutions of tomorrow, shaping a safer future, for all of us. From the depths of the ocean, to the far reaches of space, there's no limit to where a career at BAE Systems could take you. What you'll be doing: You'll be authoring and managing site assets' & infrastructure design substantiation documentation supporting the site nuclear safety case....

Job Title: Principal Engineer -Site Asset Safety Verification Location: Barrow-in-Furness, Hybrid We offer a range of hybrid and flexible working arrangements - please speak to your recruiter about the options for this particular role Salary: £60,000 + depending on experience Who we are: Join BAE Systems and you'll be part of something bigger. As a valued member of our global colleague network, you'll bring your unique skills and perspectives to help pioneer progress and protect what matters most. You'll be trusted to play your part in delivering the advanced, technology-led defence, aerospace and security solutions of tomorrow, shaping a safer future, for all of us. From the depths of the ocean, to the far reaches of space, there's no limit to where a career at BAE Systems could take you. What you'll be doing: You'll be authoring and managing site assets' & infrastructure design substantiation documentation supporting the site nuclear safety case....

We are March the UKs leading provider of critical engineering services. Our expertise as a multi-disciplinary engineering partner across infrastructure, process and digital services has led to long term partnerships with leading organisations in everything from food and drink and utilities to high-security industries such as defence, aerospace and nuclear. We are now looking for an experienced Mechanical Project Manager to join March as part of the delivery team on the SCP at Sellafield and other projects as they mature. This position will eventually progress to take over from the Principal Project Manager. As the Mechanical Project Manager, you will have a responsibility to assist the Principal project manager and senior engineer in the procurement and delivery of the Mechanical Packages, coordinating with the client, contractors, suppliers and other stakeholders to ensure successful delivery. The position will be full time and mostly site based as part of the March...

Senior/Principal Mechanical Engineer Location: Exeter (Hybrid - 2 days WFH) Salary: 45,000 - 60,000 + benefits This is an opportunity to join a close-knit team of around 25 staff, where you'll play a key role in delivering technically strong, buildable designs across a genuinely varied project portfolio. You'll be working across sectors including healthcare, MOD, education (from primary schools through to universities), commercial, and residential. Projects range from complex refurbishments through to new build developments, with the added benefit of working both client-side and alongside contractors-giving you well-rounded exposure and a deeper understanding of how projects are delivered on site. The business prides itself on developing high-quality engineers, with a strong emphasis on practical design and real-world application. You'll be given the autonomy to take ownership of your projects, build client relationships, and support the development of junior...

Job Title: Principal Mechanical Engineer Location: Portsmouth Naval Base working a hybrid pattern We offer a range of hybrid and flexible working arrangements. Please speak to your recruiter about the options for this particular role Salary: Circa £54,500 dependent on experience + bonus scheme Who we are: Join BAE Systems and you'll be part of something bigger. As a valued member of our global colleague network, you'll bring your unique skills and perspectives to help pioneer progress and protect what matters most. You'll be trusted to play your part in delivering the advanced, technology-led defence, aerospace and security solutions of tomorrow, shaping a safer future, for all of us. From the depths of the ocean, to the far reaches of space, there's no limit to where a career at BAE Systems could take you. What you'll be doing: You will provide comprehensive mechanical engineering support across a wide range of platform systems, including fluid,...