12 senior principal mechanical design engineer jobs found in Southampton

Senior / Principal Electrical Design Engineer – Building Services Location: Southampton | Hybrid Working | Full-Time Salary: Highly Competitive + Bonus + Excellent Benefits About the Role We are seeking a Senior / Principal Electrical Design Engineer to join a respected and growing M&E consultancy in Southampton. This is a hands-on, leadership-focused role, ideal for an engineer ready to take ownership of complex building services projects across healthcare, education, research, commercial, and industrial sectors. As a Senior / Principal Electrical Design Engineer , you’ll oversee technical delivery, mentor junior engineers, and engage directly with clients, ensuring sustainable, low-carbon electrical solutions are delivered to the highest standards. Key Responsibilities Lead electrical design packages on medium to large-scale projects, from concept through to construction and handover Oversee technical quality and compliance with UK regulations, BS 7671, and...

Senior / Principal Electrical Design Engineer – Building Services Location: Southampton | Hybrid Working | Full-Time Salary: Highly Competitive + Bonus + Excellent Benefits About the Role We are seeking a Senior / Principal Electrical Design Engineer to join a respected and growing M&E consultancy in Southampton. This is a hands-on, leadership-focused role, ideal for an engineer ready to take ownership of complex building services projects across healthcare, education, research, commercial, and industrial sectors. As a Senior / Principal Electrical Design Engineer , you’ll oversee technical delivery, mentor junior engineers, and engage directly with clients, ensuring sustainable, low-carbon electrical solutions are delivered to the highest standards. Key Responsibilities Lead electrical design packages on medium to large-scale projects, from concept through to construction and handover Oversee technical quality and compliance with UK regulations, BS 7671, and...

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...

Lead 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,...

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...

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,...

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...

Joining Arup   Arup undertakes transmission and distribution design projects across the globe. In the UK we deliver concept through to detail design for a wide range of clients including established asset owners and new market entrants (interconnectors, private wire schemes etc).  As an example, Arup recently formed a joint venture with Aecom to serve as the design and consenting service partner for the UK National Grid’s Great Grid Partnership. Over a period of 8–12 years, Arup will help deliver key aspects of the transmission grid transformation, ensuring a resilient, low-carbon energy network for the future. This is the UK’s major grid modernisation programme, set to deliver five times more electricity infrastructure than has been built in the past three decades. These projects, part of the Accelerated Strategic Transmission Investment (ASTI) framework, will enhance the country’s energy backbone, supporting planned renewable developments such as wind farms in the North Sea...

Job Details: Job Reference: HCC609748 Salary Range:  £48,948 - £54,423 per annum Work Location: (Hybrid Working) Hours per week : 37 Contract Type:  Permanent  Closing Date: 8 April 2026 Interview Date: w/c 13 April 2026 Hampshire County Council is recognised nationally as one of the highest performing local authorities in the UK and offers a pleasant, supportive, and collaborative working environment. As a forward-thinking in-house business unit, offers a range of services to the County Council and other public authorities. Our are looking for highly motivated and technically strong Senior Structural Design Engineers to be involved in the delivery of challenging bridge design and maintenance schemes . We have a great team environment, and we support and develop our engineers, so they are continuously developing their skills. The Role: Working in the Bridge Design Teams , you will take autonomy of your own work and be responsible for all aspects...

Job Details: Job Reference: HCC609748 Salary Range:  £48,948 - £54,423 per annum Work Location:   Elizabeth II Court, Winchester  (Hybrid Working) Hours per week : 37    Contract Type:  Permanent  Closing Date: 8 April 2026 Interview Date: w/c 13 April 2026 Hampshire County Council is recognised nationally as one of the highest performing local authorities in the UK and offers a pleasant, supportive, and collaborative working environment. As a forward-thinking in-house business unit, Hampshire Engineering Services offers a range of services to the County Council and other public authorities. Our Bridge Design Teams are looking for highly motivated and technically strong Senior Structural Design Engineers to be involved in the delivery of challenging bridge design and maintenance schemes . We have a great team environment, and we support and develop our engineers, so they are continuously developing their skills. The Role: Working in the...

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...

Join a global professional services leader. We are committed to solving the world’s biggest challenges in the areas of water, energy and urbanisation. We are looking for a passionate and dynamic Principal Engineer to join our Place and Movement team in London or Guildford. With an established track record of delivering a wide variety of projects on both local and national scales, we work with private and public sector clients, architects, planners and other professionals throughout the project life cycle, providing services from concept design through to detailed design and construction. We also support other GHD business lines where their projects have a transport interface.  We seek enthusiastic and motivated individuals who have 8+ years’ experience and are engaged in or ready to work toward professional qualification. Successful candidates will have a good technical background in public realm and transport design, together with excellent written and oral communication skills...