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106 principal mechanical design engineer jobs found in Reading

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Pertemps Bond
Mar 19, 2026
Principal Mechanical Design Engineer
Pertemps Bond Reading, UK
Job title: Principal Mechanical Design Engineer – Water Sector Location: Reading Hours: 36 hours per week (Hybrid working available) Salary: £60,000 - £80,000 + £5,8000 car allowance An excellent opportunity has arisen for an experienced Principal Mechanical Design Engineer to take a leading role within a forward-thinking organisation supporting major water and wastewater infrastructure programmes. This position offers the chance to influence engineering strategy, guide standards, and provide expert leadership across technically challenging projects, while contributing to sustainable asset delivery and innovation in the sector. Role Overview The successful candidate will act as a senior technical authority for mechanical engineering, responsible for shaping project requirements, driving engineering quality, and delivering robust solutions. Key responsibilities include: Defining clear and accurate technical requirements to support effective project delivery Enhancing...
Pertemps Bond
Mar 19, 2026
Principal Mechanical Design Engineer
Pertemps Bond Reading, UK
Job title: Principal Mechanical Design Engineer – Water Sector Location: Reading Hours: 36 hours per week (Hybrid working available) Salary: £60,000 - £80,000 + £5,8000 car allowance An excellent opportunity has arisen for an experienced Principal Mechanical Design Engineer to take a leading role within a forward-thinking organisation supporting major water and wastewater infrastructure programmes. This position offers the chance to influence engineering strategy, guide standards, and provide expert leadership across technically challenging projects, while contributing to sustainable asset delivery and innovation in the sector. Role Overview The successful candidate will act as a senior technical authority for mechanical engineering, responsible for shaping project requirements, driving engineering quality, and delivering robust solutions. Key responsibilities include: Defining clear and accurate technical requirements to support effective project delivery Enhancing...
Pertemps Bond
Mar 19, 2026
Principal Mechanical Design Engineer
Pertemps Bond Reading, UK
Job title: Principal Mechanical Design Engineer – Water Sector Location: Reading Hours: 36 hours per week (Hybrid working available) Salary: £60,000 - £80,000 + £5,8000 car allowance An excellent opportunity has arisen for an experienced Principal Mechanical Design Engineer to take a leading role within a forward-thinking organisation supporting major water and wastewater infrastructure programmes. This position offers the chance to influence engineering strategy, guide standards, and provide expert leadership across technically challenging projects, while contributing to sustainable asset delivery and innovation in the sector. Role Overview The successful candidate will act as a senior technical authority for mechanical engineering, responsible for shaping project requirements, driving engineering quality, and delivering robust solutions. Key responsibilities include: Defining clear and accurate technical requirements to support effective project delivery Enhancing...
Pertemps TM
Mar 19, 2026
Senior / Principal Mechanical Design Engineer
Pertemps TM Oxford, UK
Senior / Principal Mechanical Design Engineer Location: Oxford | Sectors: Low Carbon, Heritage, Education, Healthcare Employment Type: Full-Time Overview We are seeking a Senior / Principal Mechanical Design Engineer to join a well-established, independent building services consultancy in Oxford. This is a senior role offering the opportunity to lead mechanical design projects, influence sustainable strategies, and mentor junior engineers across heritage, education, healthcare, and commercial sectors. The Senior / Principal Mechanical Design Engineer will work on technically complex, low-carbon projects, delivering HVAC, hot/cold water, and energy-efficient solutions from RIBA Stage 2 through to handover. Key Responsibilities Lead mechanical design of building services systems, including HVAC, hot/cold water, and sustainable strategies Oversee production of technical documentation, drawings (AutoCAD/Revit), and specifications Collaborate with clients, architects, and...
Pertemps TM
Mar 19, 2026
Senior / Principal Mechanical Design Engineer
Pertemps TM Oxford, UK
Senior / Principal Mechanical Design Engineer Location: Oxford | Sectors: Low Carbon, Heritage, Education, Healthcare Employment Type: Full-Time Overview We are seeking a Senior / Principal Mechanical Design Engineer to join a well-established, independent building services consultancy in Oxford. This is a senior role offering the opportunity to lead mechanical design projects, influence sustainable strategies, and mentor junior engineers across heritage, education, healthcare, and commercial sectors. The Senior / Principal Mechanical Design Engineer will work on technically complex, low-carbon projects, delivering HVAC, hot/cold water, and energy-efficient solutions from RIBA Stage 2 through to handover. Key Responsibilities Lead mechanical design of building services systems, including HVAC, hot/cold water, and sustainable strategies Oversee production of technical documentation, drawings (AutoCAD/Revit), and specifications Collaborate with clients, architects, and...
Pertemps TM
Mar 19, 2026
Senior / Principal Mechanical Design Engineer
Pertemps TM Oxford, UK
Senior / Principal Mechanical Design Engineer Location: Oxford | Sectors: Low Carbon, Heritage, Education, Healthcare Employment Type: Full-Time Overview We are seeking a Senior / Principal Mechanical Design Engineer to join a well-established, independent building services consultancy in Oxford. This is a senior role offering the opportunity to lead mechanical design projects, influence sustainable strategies, and mentor junior engineers across heritage, education, healthcare, and commercial sectors. The Senior / Principal Mechanical Design Engineer will work on technically complex, low-carbon projects, delivering HVAC, hot/cold water, and energy-efficient solutions from RIBA Stage 2 through to handover. Key Responsibilities Lead mechanical design of building services systems, including HVAC, hot/cold water, and sustainable strategies Oversee production of technical documentation, drawings (AutoCAD/Revit), and specifications Collaborate with clients, architects, and...
RPS Group
Mar 19, 2026
Principal Mechanical Design Engineer (Water)
RPS Group London, UK
Principal Mechanical Design Engineer (Water) We are currently in the market to recruit multiple Principal Mechanical Design Engineers (Water) for a variety of major long-term frameworks across the UK. In addition to a range of long-term programmes across the UK water industry RPS, and Tetra Tech, have successfully won a £100 million single-award framework from United Utilities to support the improvement of river health across the Northwest of England. RPS has been working with United Utilities for over 20 years on innovative projects. As we move towards AMP8, this is an exciting time to be working in the water industry, and collaborating with passionate organisations, gives our people the opportunity to create positive change. Under this 10-year framework, RPS will drive program optimisation, develop solutions, and select the preferred options based on best value, lowest carbon, and cost. Our mission is to deliver exceptional water services to...
United Living Group
Mar 19, 2026
Principal Mechanical Design Engineer
United Living Group Havant PO9, UK
Company Description AFECO is an engineering services provider in the water sector and is part of the United Living Group which includes business that operate in both the water and energy sectors. We work with several major water companies across the UK with a broad portfolio of long-term Frameworks in place that extend throughout AMP8. We have worked with our clients over past AMPs to deliver innovative yet robust projects and are renowned for developing solutions that offer cost effective, low carbon and best value options. AFECO and the wider United Living Infrastructure (Water) Group have a variety of major long-term frameworks across the UK including design and build Frameworks with Southern Water, Severn Trent, Thames Water and United Utilities. These Frameworks focus on the design, construction, refurbishment and improvement of infrastructure and non-infrastructure assets across the water and wastewater sectors and includes structural, civil, mechanical, electrical, ICA...
RPS Group
Mar 19, 2026
Principal Mechanical Design Engineer (Water)
RPS Group Birmingham, UK
Principal Mechanical Design Engineer (Water) We are currently in the market to recruit multiple Principal Mechanical Design Engineers (Water) for a variety of major long-term frameworks across the UK. In addition to a range of long-term programmes across the UK water industry RPS, and Tetra Tech, have successfully won a £100 million single-award framework from United Utilities to support the improvement of river health across the Northwest of England. RPS has been working with United Utilities for over 20 years on innovative projects. As we move towards AMP8, this is an exciting time to be working in the water industry, and collaborating with passionate organisations, gives our people the opportunity to create positive change. Under this 10-year framework, RPS will drive program optimisation, develop solutions, and select the preferred options based on best value, lowest carbon, and cost. Our mission is to deliver exceptional water services to...
Pertemps TM
Mar 19, 2026
Senior/Principal Mechanical Design Engineer
Pertemps TM Cardiff, UK
Senior / Principal Mechanical Design Engineer – Building Services 📍 Location: South Wales | 💰 Salary: Competitive + Package 📅 Job Type: Full-time, Permanent Lead Mechanical Design, Mentor Talent, and Deliver High-Quality Projects A well-established and highly respected Building Services Contractor in South Wales is seeking a Senior / Principal Mechanical Design Engineer to strengthen their in-house mechanical design team. With a strong pipeline of projects across commercial, education, healthcare, residential, hospitality, and retail sectors, this is an exciting opportunity to take a leadership role with real responsibility. You’ll join a supportive team delivering technically challenging and rewarding projects, from multimillion-pound new builds to complex refurbishments, while having the chance to mentor junior engineers and shape the future of the department. Key Responsibilities Lead mechanical design on projects from concept through to completion Attend...
Pertemps TM
Mar 19, 2026
Senior/Principal Mechanical Design Engineer
Pertemps TM Cardiff, UK
Senior / Principal Mechanical Design Engineer – Building Services 📍 Location: South Wales | 💰 Salary: Competitive + Package 📅 Job Type: Full-time, Permanent Lead Mechanical Design, Mentor Talent, and Deliver High-Quality Projects A well-established and highly respected Building Services Contractor in South Wales is seeking a Senior / Principal Mechanical Design Engineer to strengthen their in-house mechanical design team. With a strong pipeline of projects across commercial, education, healthcare, residential, hospitality, and retail sectors, this is an exciting opportunity to take a leadership role with real responsibility. You’ll join a supportive team delivering technically challenging and rewarding projects, from multimillion-pound new builds to complex refurbishments, while having the chance to mentor junior engineers and shape the future of the department. Key Responsibilities Lead mechanical design on projects from concept through to completion Attend...
Pertemps TM
Mar 19, 2026
Senior/Principal Mechanical Design Engineer
Pertemps TM Cardiff, UK
Senior / Principal Mechanical Design Engineer – Building Services 📍 Location: South Wales | 💰 Salary: Competitive + Package 📅 Job Type: Full-time, Permanent Lead Mechanical Design, Mentor Talent, and Deliver High-Quality Projects A well-established and highly respected Building Services Contractor in South Wales is seeking a Senior / Principal Mechanical Design Engineer to strengthen their in-house mechanical design team. With a strong pipeline of projects across commercial, education, healthcare, residential, hospitality, and retail sectors, this is an exciting opportunity to take a leadership role with real responsibility. You’ll join a supportive team delivering technically challenging and rewarding projects, from multimillion-pound new builds to complex refurbishments, while having the chance to mentor junior engineers and shape the future of the department. Key Responsibilities Lead mechanical design on projects from concept through to completion Attend...
Stantec
Mar 19, 2026
Senior or Principal Mechanical Design Engineer - Building Services
Stantec Taunton, UK
We are looking for a Senior or Principal Mechanical Engineer to join our dynamic and growing Building Services (MEP) team in Plymouth. Our team is lively, supportive, and enjoys working together while delivering exceptional work. This is a fantastic opportunity to join a friendly team that's not just passionate about engineering but also about creating a positive and collaborative work environment. We value diversity of thought and encourage innovative ideas from every perspective. We have built our pipeline of work to span a diverse range of sectors, from healthcare and education, to commercial, residential and industrial, providing variety that keeps us interested and constantly learning and evolving. We pride ourselves on a collaborative, proactive approach, working closely with clients to deliver award-winning and sustainable environments. Our MEP team is at the forefront of sustainable and high-performance building design and we have a strong track record of...
Ramboll
Mar 19, 2026
Mechanical Principal Design Engineer - Healthcare
Ramboll London, UK
Job Description Ramboll is ranked a Top 10 consultant in the UK and has around 2,000 bright minds working across multiple offices to apply their passion to deliver innovative solutions across Buildings, Transport, Environment & Health and Energy. We love seeing our talents develop and succeed and you will have opportunities to work on challenging and inspiring projects within an environment that is friendly, open and supportive. Job Description Do you have experience in complex, technically challenging projects and want to join the UK team of our Global Healthcare Division? Do you enjoy developing sustainable solutions for technical challenges and working on a wide variety of project types? Are you motivated by innovative engineering solutions and creating sustainable change that benefits society and nature? Do you want to work in an environment that welcomes design flair and innovative solutions? If this sounds like you, or you’re curious to learn more, then this...
Ramboll
Mar 19, 2026
Mechanical Principal Design Engineer - Healthcare
Ramboll Birmingham, UK
Job Description Ramboll is ranked a Top 10 consultant in the UK and has around 2,000 bright minds working across multiple offices to apply their passion to deliver innovative solutions across Buildings, Transport, Environment & Health and Energy. We love seeing our talents develop and succeed and you will have opportunities to work on challenging and inspiring projects within an environment that is friendly, open and supportive. Job Description Do you have experience in complex, technically challenging projects and want to join the UK team of our Global Healthcare Division? Do you enjoy developing sustainable solutions for technical challenges and working on a wide variety of project types? Are you motivated by innovative engineering solutions and creating sustainable change that benefits society and nature? Do you want to work in an environment that welcomes design flair and innovative solutions? If this sounds like you, or you’re curious to learn more, then this...
AtkinsRéalis
Mar 19, 2026
Senior / Principal Mechanical Design Engineer
AtkinsRéalis Epsom, UK
Job Description Are you a Mechanical Design Engineer who thrives on leading the way on solving difficult engineering problems? Are you drawn to complex projects and excited by the opportunity to rapidly progress your technical leadership skills to the next level, heading up multi-disciplinary projects? If so, you might enjoy solving the energy industry’s most important mechanical engineering conundrums for a multitude of energy systems across a variety of clients. You could be Managing exciting projects designing test rigs in support of the development of the UKs nuclear fusion capabilities, carrying out structural integrity assessment of primary plant (for both civil and defence applications) to keep existing fleet generating, designing high integrity structures for new nuclear establishments, or leading one of many renewable energy projects across a growing carbon net zero portfolio. You’re likely to be juggling several projects simultaneously, so enjoying...
AtkinsRéalis
Mar 19, 2026
Senior / Principal Mechanical Design Engineer
AtkinsRéalis Bristol, UK
Job Description Are you a Mechanical Design Engineer who thrives on leading the way on solving difficult engineering problems? Are you drawn to complex projects and excited by the opportunity to rapidly progress your technical leadership skills to the next level, heading up multi-disciplinary projects? If so, you might enjoy solving the energy industry’s most important mechanical engineering conundrums for a multitude of energy systems across a variety of clients. You could be Managing exciting projects designing test rigs in support of the development of the UKs nuclear fusion capabilities, carrying out structural integrity assessment of primary plant (for both civil and defence applications) to keep existing fleet generating, designing high integrity structures for new nuclear establishments, or leading one of many renewable energy projects across a growing carbon net zero portfolio. You’re likely to be juggling several projects simultaneously, so enjoying...
MWH Treatment
Mar 19, 2026
Senior/Principal Design Engineer - Mechanical
MWH Treatment Brighton, Brighton and Hove, UK
We are looking to strengthen our engineering team with a Senior Mechanical Engineer based at Brighton with hybrid working available.  You will report directly to the Principal Engineer and your role will be to provide superior quality Engineering Design services to allow the company to minimise risks and maximise profits on turnkey and engineering services contracts. You will co-ordinate the design and produce design documents and drawings taking due account of health and safety requirements, specifications and standards pertaining to the contract. Key responsibilities will include: Produce design layouts which are cost effective, meet the requirements of the specification and which can be constructed and commissioned effectively. The term ‘cost’ is to embrace all costs associated with the design and the subsequent construction of the design. To be cost effective the whole out turn cost of the design solution must be considered including design time costs, material costs,...
Glanua
Mar 19, 2026
Principle Electrical Design Engineer
Glanua Reading, UK
Principle Electrical Design Engineer - (Wastewater Treatment Projects) About Us: Glanua is an industry leader in providing innovative and sustainable engineering solutions to design, build, operate and maintain critical water and wastewater infrastructure across Ireland and the UK. We are a trusted provider to the municipal and industrial sector where our clients include Ireland and the UK's largest water utilities, Uisce Eireann (formally Irish Water), Thames Water, Yorkshire Water Affinity Water, Northumbrian Water and United Utilities. Glanua is passionate about solving today's environmental challenges and delivering a decarbonised and sustainable world. We know that to build successful creative teams we need a diverse workforce that can deliver new innovative ways of thinking. We provide an environment where you will have the freedom to develop and grow to your full potential. We champion our core values and uphold the highest standards of Safety and Well-being,...
Glanua
Mar 19, 2026
Senior Electrical Design Engineer
Glanua Reading, UK
Senior Electrical Design Engineer - (Wastewater Treatment Projects) About Us:   Glanua is an industry leader in providing innovative and sustainable engineering solutions to design, build, operate and maintain critical water and wastewater infrastructure across Ireland and the UK. We are a trusted provider to the municipal and industrial sector where our clients include Ireland and the UK's largest water utilities, Uisce Eireann (formally Irish Water), Thames Water, Yorkshire Water Affinity Water, Northumbrian Water and United Utilities. Glanua is passionate about solving today's environmental challenges and delivering a decarbonised and sustainable world. We know that to build successful creative teams we need a diverse workforce that can deliver new innovative ways of thinking. We provide an environment where you will have the freedom to develop and grow to your full potential. We champion our core values and uphold the highest standards of Safety and...
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