233 principal mechanical design engineer jobs found

Principal Mechanical Design Engineer – Joloda Hydraroll, Liverpool Principal Mechanical Design Engineer | Join a global innovator shaping smarter, safer loading solutions | Enjoy hybrid flexibility, strong professional development, and the opportunity to lead engineering excellence in a people-first culture. We’re expanding our world-class engineering team to drive forward innovation and continuous improvement at Joloda Hydraroll – a global leader in automated and manual loading systems trusted by manufacturers on six continents. If you’re passionate about mechanical design, engineering leadership, and making an impact in an organisation that genuinely values collaboration and innovation, this could be your next move. Click to Apply. Why Joloda Hydraroll? At Joloda Hydraroll, we believe in lightening loads – literally and figuratively. For over 60 years, we’ve been designing and manufacturing state-of-the-art loading and unloading systems that make logistics safer,...

 Senior/Principal Mechanical Design Engineer – South Wales (Building Services) Location: South Wales  Salary: Competitive, depending on experience + package Job Type: Full-time, permanent I’m working with a well-established and highly respected Building Services Contractor based in South Wales who are currently looking to strengthen their in-house mechanical design team with the addition of a Senior or Principal Mechanical Design Engineer . With a strong pipeline of secured work across a range of sectors – including commercial, education, healthcare, residential, hospitality, and retail – this is an exciting opportunity for someone who wants to step into a role with real responsibility and the backing of an experienced, supportive team. 🏗️ About the Role This is a lead design role within the business. You’ll be responsible for managing mechanical design from early-stage concept through to technical delivery on site. You’ll act as the main point of contact for...

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...

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...

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...

 Senior/Principal Mechanical Design Engineer – South Wales (Building Services) Location: South Wales  Salary: Competitive, depending on experience + package Job Type: Full-time, permanent I’m working with a well-established and highly respected Building Services Contractor based in South Wales who are currently looking to strengthen their in-house mechanical design team with the addition of a Senior or Principal Mechanical Design Engineer . With a strong pipeline of secured work across a range of sectors – including commercial, education, healthcare, residential, hospitality, and retail – this is an exciting opportunity for someone who wants to step into a role with real responsibility and the backing of an experienced, supportive team. 🏗️ About the Role This is a lead design role within the business. You’ll be responsible for managing mechanical design from early-stage concept through to technical delivery on site. You’ll act as the main point of contact for...

Senior to Principal Mechanical Design Engineer – Building Services 📍 Southampton (Hybrid Working) 💼 Full-Time 💰 Highly Competitive Salary + Bonus + Benefits About the Role A leading independent building services consultancy on the South Coast is seeking a Senior to Principal Mechanical Design Engineer to join their growing team in Southampton. Known for their technical strength, sustainable approach, and long-term client relationships, this firm delivers a broad range of projects across the healthcare, education, research, commercial, and industrial sectors. This role is ideal for an experienced engineer ready to lead projects, manage teams, and play an integral part in delivering innovative and low-carbon mechanical building services solutions. What You’ll Be Doing Lead mechanical design on a range of complex projects, from early-stage feasibility to technical delivery and handover Take ownership of project outputs including reports, calculations, technical...

Job Description Role Purpose The Principal Mechanical Design Engineer will provide technical leadership for the design and delivery of mechanical systems within water and wastewater infrastructure projects. You will be responsible for ensuring designs meet client requirements, industry standards, performance objectives, and regulatory compliance while guiding multidisciplinary teams through all project stages from feasibility to detailed design and construction support.   Key Responsibilities Technical Leadership & Design · Lead the mechanical design of water and wastewater treatment assets, including pumping stations, pipelines, treatment plant mechanical equipment, screens, filters, chemical dosing, and sludge-handling systems. · Produce and review design deliverables such as P&IDs, specifications, GA drawings, equipment schedules, design calculations, and asset standards. · Develop concept, outline, and detailed designs with a strong emphasis on whole-life cost,...

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...

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...

Senior to Principal Mechanical Design Engineer Location: Oxford | Sectors: Low Carbon, Heritage, Education, Healthcare About the Company Join a well-established, independent building services consultancy in Oxford, known for delivering sustainable, technically robust solutions across heritage refurbishments, modern low-energy campuses, and complex infrastructure projects. Our integrated team combines mechanical, electrical, lighting, Passivhaus, and building physics expertise under one roof. With a strong pipeline of work and investment in people, this role offers long-term progression and a chance to shape meaningful projects. The Role As a Senior or Principal Mechanical Engineer, you will: Lead mechanical design from RIBA Stage 2 to handover: HVAC, hot/cold water, and sustainable strategies. Collaborate with clients, architects, and internal teams to create energy-efficient, technically sound solutions. Apply building physics and performance analysis where...

Principal Mechanical Design Engineer – Joloda Hydraroll, Liverpool Principal Mechanical Design Engineer | Join a global innovator shaping smarter, safer loading solutions | Enjoy hybrid flexibility, strong professional development, and the opportunity to lead engineering excellence in a people-first culture. We’re expanding our world-class engineering team to drive forward innovation and continuous improvement at Joloda Hydraroll – a global leader in automated and manual loading systems trusted by manufacturers on six continents. If you’re passionate about mechanical design, engineering leadership, and making an impact in an organisation that genuinely values collaboration and innovation, this could be your next move. Click to Apply. Why Joloda Hydraroll? At Joloda Hydraroll, we believe in lightening loads – literally and figuratively. For over 60 years, we’ve been designing and manufacturing state-of-the-art loading and unloading systems that make logistics safer,...

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...

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...

Senior to Principal Mechanical Design Engineer Location: Oxford | Sectors: Low Carbon, Heritage, Education, Healthcare About the Company Join a well-established, independent building services consultancy in Oxford, known for delivering sustainable, technically robust solutions across heritage refurbishments, modern low-energy campuses, and complex infrastructure projects. Our integrated team combines mechanical, electrical, lighting, Passivhaus, and building physics expertise under one roof. With a strong pipeline of work and investment in people, this role offers long-term progression and a chance to shape meaningful projects. The Role As a Senior or Principal Mechanical Engineer, you will: Lead mechanical design from RIBA Stage 2 to handover: HVAC, hot/cold water, and sustainable strategies. Collaborate with clients, architects, and internal teams to create energy-efficient, technically sound solutions. Apply building physics and performance analysis where...

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...

Senior to Principal Mechanical Design Engineer Location: Oxford | Sectors: Low Carbon, Heritage, Education, Healthcare About the Company Join a well-established, independent building services consultancy in Oxford, known for delivering sustainable, technically robust solutions across heritage refurbishments, modern low-energy campuses, and complex infrastructure projects. Our integrated team combines mechanical, electrical, lighting, Passivhaus, and building physics expertise under one roof. With a strong pipeline of work and investment in people, this role offers long-term progression and a chance to shape meaningful projects. The Role As a Senior or Principal Mechanical Engineer, you will: Lead mechanical design from RIBA Stage 2 to handover: HVAC, hot/cold water, and sustainable strategies. Collaborate with clients, architects, and internal teams to create energy-efficient, technically sound solutions. Apply building physics and performance analysis where...

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...

Senior to Principal Mechanical Design Engineer – Building Services 📍 Southampton (Hybrid Working) 💼 Full-Time 💰 Highly Competitive Salary + Bonus + Benefits About the Role A leading independent building services consultancy on the South Coast is seeking a Senior to Principal Mechanical Design Engineer to join their growing team in Southampton. Known for their technical strength, sustainable approach, and long-term client relationships, this firm delivers a broad range of projects across the healthcare, education, research, commercial, and industrial sectors. This role is ideal for an experienced engineer ready to lead projects, manage teams, and play an integral part in delivering innovative and low-carbon mechanical building services solutions. What You’ll Be Doing Lead mechanical design on a range of complex projects, from early-stage feasibility to technical delivery and handover Take ownership of project outputs including reports, calculations, technical...

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...