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Permanent Onsite principal mechanical engineer
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Rullion Ltd
12 Jun, 2026
Permanent
Senior/Principal/Mechanical Engineer
Rullion Ltd Trafford Park, Stretford, Manchester, UK
Senior/Principal/Mechanical Engineer My client is an engineering design consultancy working closely with a wide range of clients, across a number of disciplines within the UK rail and utilities industries. Full time role from the Manchester Office with occasional site visits for which travel expenses will be paid. Hybrid working possible when required provided agreed in advance. Can be contract (outside IR35) or permanent role. Responsibilities: Provide design deliverables that satisfy safety and quality requirements. Produce design calculations and drawings for the water industry Direct and develop CAD technicians. Prepare scopes for and check output of subcontract M&E design teams Liaise with, prepare specifications for and review tender responses from equipment suppliers and manufacturers Prepare design investigations, reports and specifications. Design in compliance with relevant technical, professional and group standards. Ensure project change for...
Rullion Engineering Cumbria
10 Jun, 2026
Permanent
Principal Mechanical Engineer
Rullion Engineering Cumbria 39 Holloway Rd, London N7 8JP, UK
Position: Principal Mechanical Engineer Location: Warrington or Abingdon (flexible with location) Start Date: ASAP Hours: 37 hours per week, Monday - Friday Hybrid: 3 days in the office and 2 days home working Mechanical Engineer - Nuclear Projects The Mechanical Engineer will work within multi-disciplinary engineering teams delivering projects across different lifecycle stages, from FEED through to detailed design, commissioning, and operational support within regulated nuclear environments. You will be involved in mechanical design and technical studies, supporting a range of systems including handling equipment, mechanical transfer systems, and process equipment used in high-active or controlled environments. Work will also include design development, technical documentation, and support across construction, commissioning, operations, and decommissioning phases. Key Responsibilities Deliver and manage mechanical engineering studies and design work Produce and...
Rullion Ltd
09 Jun, 2026
Permanent
Senior/Principal/Mechanical Engineer
Rullion Ltd London Colney, St Albans, UK
Senior/Principal/Mechanical Engineer My client is an engineering design consultancy working closely with a wide range of clients, across a number of disciplines within the UK rail and utilities industries. Full time role from the St Albans Office with occasional site visits for which travel expenses will be paid. Hybrid working possible when required provided agreed in advance. Can be contract (outside IR35) or permanent role. Responsibilities: Provide design deliverables that satisfy safety and quality requirements. Produce design calculations and drawings for the water industry Direct and develop CAD technicians. Prepare scopes for and check output of subcontract M&E design teams Liaise with, prepare specifications for and review tender responses from equipment suppliers and manufacturers Prepare design investigations, reports and specifications. Design in compliance with relevant technical, professional and group standards. Ensure project change for...
Advance TRS
06 Jun, 2026
Permanent
Principal Mechanical Engineer
Advance TRS Bristol, UK
Principal Mechanical Engineer - Water Sector Bristol, Exeter or Cardiff Hybrid 2-3 days per week 60-70k + excellent benefits Advance TRS are partnering with a global engineering consultancy who are looking for a Principal Mechanical Engineer. With AMP8 driving major change, this is your opportunity to lead meaningful projects that tackle climate and environmental challenges head-on. What you'll do: Lead mechanical design across the full project lifecycle-from concept to construction Deliver innovative solutions for water & wastewater treatment, pumping stations, and infrastructure Collaborate with multidisciplinary teams, clients, and contractors Mentor and support the next generation of engineers What you'll bring: Degree in Mechanical Engineering (or similar), ideally Chartered or working toward it Strong experience in detailed design within the water sector A collaborative mindset and passion for sustainable engineering Why join...
Calibre Search
23 May, 2026
Permanent
Senior / Principal Mechanical Building Services Engineer
Calibre Search Woolston, Warrington, UK
Senior / Principal Mechanical Building Services Engineer Warrington 50,000 - 65,000 DOE + Benefits We're working with a growing integrated MEP and building physics consultancy with offices in Yorkshire and the North West. They deliver mechanical, electrical, and sustainability design across a broad range of sectors, residential, commercial, education, industrial, and retail - and they're looking for a Senior or Principal Mechanical Engineer to join their expanding team. This is a consultancy that does things properly. Design continuity runs all the way through to site, so you'll actually see your work get built - not hand it off at Stage 3 and move on. They have a real emphasis on buildability from the earliest design stages, and the business is fully digitally operational with Revit Coordinators working alongside the engineering team on every project. At Senior level, you'll be taking ownership of mechanical design across a live and varied project portfolio, working...
Advance TRS
06 Jun, 2026
Permanent
Principal Mechanical Engineer
Advance TRS St Albans, UK
Senior Mechanical Engineer - Water Sector St Albans: Hybrid (3 Days Office) Permanent: 50-60k Advance TRS are supporting a rapidly growing consultancy in their search for a Senior Mechanical Engineer. Joining a newly formed London business unit, you'll have the unique opportunity to help build a team from the ground up, influence how projects are delivered, and play a significant role in the future growth of the business within the UK water market. You'll lead the mechanical design of clean water and wastewater projects, producing high-quality engineering solutions while mentoring junior engineers and coordinating multidisciplinary design teams. Key Responsibilities: Deliver mechanical design solutions for water and wastewater projects Produce calculations, reports, specifications and design drawings Lead and review work from junior engineers and CAD technicians Coordinate with suppliers, manufacturers and subcontract design teams Ensure designs meet industry...
MBDA UK
17 May, 2026
Permanent
Principal Mechanical Engineer
MBDA UK Manchester, UK
MBDA is a leading defence organisation. We are proud of the role we play in supporting the Armed Forces who protect our nations. We partner with governments to work together towards a common goal, defending our freedom. Salary : Circa £ 55,000 depending on experience Dynamic (hybrid) working : 2-3 days per week on-site (Bolton) Security Clearance : British Citizen or a Dual UK national with British citizenship Restrictions and/or limitations relating to nationality and/or rights to work may apply. As a minimum and after offer stage, all successful candidates will need to undergo HMG Basic Personnel Security Standard checks (BPSS), which are managed by the MBDA Personnel Security Team. What we can offer you: Company bonus : Up to £2,500 (based on company performance and will vary year to year) Pension : maximum total (employer and employee) contribution of up to 14% Overtime: opportunity for paid overtime Flexi Leave: Up to 15 additional days Flexible working:...
BS
01 Jun, 2026
Permanent
Senior/Principal Platform Systems Mechanical Engineer
BAE Systems Ulverston LA12, UK
Job Title: Senior/Principal Platform Systems Mechanical Engineer Location: Barrow-In-Furness (Full time Onsite) Salary: Competitive 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 advanced, technology-led defence, aerospace and security solutions, 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 will be doing: In this role, you will support the development and delivery of mechanical platform systems, ensuring robust design evidence is generated to support safe and effective engineering solutions. You will contribute to testing and commissioning activities, support issue resolution, and work closely with...
BS
01 Jun, 2026
Permanent
Senior/Principal Platform Systems Mechanical Engineer
BAE Systems Dalton-in-Furness, UK
Job Title: Senior/Principal Platform Systems Mechanical Engineer Location: Barrow-In-Furness (Full time Onsite) Salary: Competitive 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 advanced, technology-led defence, aerospace and security solutions, 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 will be doing: In this role, you will support the development and delivery of mechanical platform systems, ensuring robust design evidence is generated to support safe and effective engineering solutions. You will contribute to testing and commissioning activities, support issue resolution, and work closely with...
BS
01 Jun, 2026
Permanent
Senior/Principal Platform Systems Mechanical Engineer
BAE Systems Kirkby-in-Furness LA17, UK
Job Title: Senior/Principal Platform Systems Mechanical Engineer Location: Barrow-In-Furness (Full time Onsite) Salary: Competitive 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 advanced, technology-led defence, aerospace and security solutions, 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 will be doing: In this role, you will support the development and delivery of mechanical platform systems, ensuring robust design evidence is generated to support safe and effective engineering solutions. You will contribute to testing and commissioning activities, support issue resolution, and work closely with...
BS
01 Jun, 2026
Permanent
Senior/Principal Platform Systems Mechanical Engineer
BAE Systems Millom LA18, UK
Job Title: Senior/Principal Platform Systems Mechanical Engineer Location: Barrow-In-Furness (Full time Onsite) Salary: Competitive 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 advanced, technology-led defence, aerospace and security solutions, 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 will be doing: In this role, you will support the development and delivery of mechanical platform systems, ensuring robust design evidence is generated to support safe and effective engineering solutions. You will contribute to testing and commissioning activities, support issue resolution, and work closely with...
BS
01 Jun, 2026
Permanent
Senior/Principal Platform Systems Mechanical Engineer
BAE Systems Barrow-in-Furness, UK
Job Title: Senior/Principal Platform Systems Mechanical Engineer Location: Barrow-In-Furness (Full time Onsite) Salary: Competitive 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 advanced, technology-led defence, aerospace and security solutions, 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 will be doing: In this role, you will support the development and delivery of mechanical platform systems, ensuring robust design evidence is generated to support safe and effective engineering solutions. You will contribute to testing and commissioning activities, support issue resolution, and work closely with...
BS
01 Jun, 2026
Permanent
Senior/Principal Platform Systems Mechanical Engineer
BAE Systems Broughton-in-Furness LA20, UK
Job Title: Senior/Principal Platform Systems Mechanical Engineer Location: Barrow-In-Furness (Full time Onsite) Salary: Competitive 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 advanced, technology-led defence, aerospace and security solutions, 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 will be doing: In this role, you will support the development and delivery of mechanical platform systems, ensuring robust design evidence is generated to support safe and effective engineering solutions. You will contribute to testing and commissioning activities, support issue resolution, and work closely with...
BS
01 Jun, 2026
Permanent
Senior/Principal Platform Systems Mechanical Engineer
BAE Systems Askam-in-Furness LA16, UK
Job Title: Senior/Principal Platform Systems Mechanical Engineer Location: Barrow-In-Furness (Full time Onsite) Salary: Competitive 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 advanced, technology-led defence, aerospace and security solutions, 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 will be doing: In this role, you will support the development and delivery of mechanical platform systems, ensuring robust design evidence is generated to support safe and effective engineering solutions. You will contribute to testing and commissioning activities, support issue resolution, and work closely with...
BS
01 Jun, 2026
Permanent
Senior/Principal Platform Systems Mechanical Engineer
BAE Systems Grange-over-Sands LA11, UK
Job Title: Senior/Principal Platform Systems Mechanical Engineer Location: Barrow-In-Furness (Full time Onsite) Salary: Competitive 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 advanced, technology-led defence, aerospace and security solutions, 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 will be doing: In this role, you will support the development and delivery of mechanical platform systems, ensuring robust design evidence is generated to support safe and effective engineering solutions. You will contribute to testing and commissioning activities, support issue resolution, and work closely with...
Randstad Engineering
19 May, 2026
Permanent
Mechanical Engineer
Randstad Engineering Bristol, UK
Mechanical Engineer - Advanced Product Development Salary: 44,000 + comprehensive benefits package Location: Bristol area (Hybrid working - split your time between home and our advanced engineering site) Position Type: Full-time, Permanent Turn innovative concepts into precision engineering realities. We are a global leader in high-tech manufacturing solutions, and we are looking for a driven Mechanical Engineer to deliver best-practice design for next-generation, high-precision equipment. Reporting to the Associate Principal Mechanical Engineer, you will provide critical technical expertise for complex subsystems and technology developments. This is an incredible opportunity for an ambitious engineer to sharpen their design skills, collaborate with multi-disciplinary teams, and master international compliance standards in a booming industry. What You Will Do Technical Delivery: Take ownership of the mechanical engineering aspects of key project...
Randstad Engineering
19 May, 2026
Permanent
Senior Mechanical Engineer
Randstad Engineering Bristol, UK
Senior Mechanical Engineer - New Product Introduction (NPI) Salary: 53,000 + comprehensive benefits package Location: Bristol area (Hybrid working - split your time between home and our advanced engineering site) Position Type: Full-time, Permanent Shape the future of advanced manufacturing technology. We are a global leader in high-tech engineering, and we are seeking a visionary Senior Mechanical Engineer (NPI) to drive best-practice mechanical design for next-generation manufacturing equipment. Reporting to the Associate Principal Mechanical Engineer, you will be the technical anchor for high-profile projects, guiding complex subsystems from initial concept through to high-volume production. This is an exceptional opportunity to champion engineering excellence, mentor rising talent, and see your designs operating on a global scale. What You Will Do Technical Leadership: Take full responsibility for the mechanical delivery of subsystems and...
MBDA UK
01 Jun, 2026
Permanent
Principal Mechanical Design Engineer
MBDA UK Stevenage, UK
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....
Safran UK
10 Jun, 2026
Permanent
Assistant Principal Systems Engineer
Safran UK Gloucestershire, UK
Safran Principal Systems Engineer Gloucester UK Looking after the people who make Safran great is our priority. We offer a range of flexible benefits designed to support you-both in and out of work, including: Early finish on Fridays Competitive salary and annual bonus 25 days' holiday + bank holidays (option to buy/sell) Flexible working options Pension (matched up to 8%) and life assurance Professional development, ongoing training, mentoring Onsite amenities: parking, restaurant, bicycle storage, showers Family-friendly and accessible workplace policies Plus a wide range of flexible benefits of your choice! Safran - Here, we craft excellence together. At Safran, excellence is a journey - and we'd love you to be a part of it. As a trusted global leader in aerospace, defence, and space, we are proud to be a company where diversity, innovation, and opportunity come together to shape a sustainable future where we can all succeed together through a shared vision We...
Calibre Search
06 Jun, 2026
Permanent
Senior Electrical Engineer Building Services Hybrid Working
Calibre Search Penwortham, Preston, UK
Senior Electrical Engineer Building Services Consultancy Location: Preston / Hybrid Working Salary: 45,000 - 55,000 + Benefits Job Ref: An established and highly respected Building Services Consultancy is seeking a Senior Electrical Engineer to join its growing North West team. With a strong reputation across Healthcare, Education, Residential, Commercial and Public Sector projects, this consultancy has built long-term client relationships through technical excellence, practical design solutions and a genuinely collaborative approach to project delivery. This opportunity would suit either an experienced Intermediate Electrical Engineer looking to take the next step into a Senior position or an established Senior Electrical Engineer seeking greater responsibility, project ownership and the opportunity to be client facing and work across all RIBA Stages. The Role As a Senior Electrical Engineer, you will play a key role in delivering electrical building services...
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