About the OpportunityWe are recruiting a Principal Mechanical Engineer to join our Energy business, supporting a key client’s UK nuclear fleet and new small modular reactor developers. This role will be based at one of our Energy off...Read More>>.

A leading engineering consultancy in the UK is seeking a Principal Mechanical Engineer to join their Energy & Resources team. You will work on a variety of projects including waste and generation projects, ensuring designs meet technical and safety s...Read More>>.

Job Title: Principal Mechanical Engineer Location: Plymouth, Devon + Hybrid Working Arrangements Compensation: Starting Salary from £61,474 dependent upon experience + Benefits Role Type: Full t...Read More>>.

Arcadis is the world's leading company delivering sustainable design, engineering, and consultancy solutions for natural and built assets. We are more than 36,000 people, in over 70 countries, dedicated to improving quality of life. Ever...Read More>>.

A leading engineering consultancy in Peterborough is seeking a Principal Mechanical Engineer to lead the technical delivery of water solutions. Responsibilities include ensuring compliance and safety, mentoring junior engineers, and driving innovatio...Read More>>.

Principal Mechanical Engineer Location UK - Glasgow - 177 Bothwell Street Responsibilities Prepare feasibility studies, outline design, detailed design and construction support Produce plant...Read More>>.

A leading engineering firm in the UK is seeking a Principal Mechanical Engineer who will manage prestigious projects and lead a team of engineers. The successful candidate will possess strong UK mechanical building services design knowledge, expertis...Read More>>.

AECOM is looking for a Principal Mechanical Engineer to join their Water Team in Glasgow, Scotland. The role involves leading engineering design for significant water and wastewater projects, preparing feasibility studies, and collaborating with vari...Read More>>.

A leading engineering firm is looking for a principal mechanical engineer to join their team in Basingstoke, where you will lead on prestigious projects. You'll provide design and technical advice while also supervising engineering teams. The role re...Read More>>.

Hartmann Young is seeking a Principal Mechanical Engineer in Cambridge, UK, to drive mechanical design and product development within an innovative biotechnology company. This role involves managing the full product lifecycle, creating CAD models usi...Read More>>.

A global consulting firm based in the UK is seeking a Principal Mechanical Engineer specializing in data centre design. The role involves leading technical teams and delivering complex projects while contributing to thought leadership and strategic g...Read More>>.

At BakerHicks, our Mechanical team is known for making the complex simple. Our mechanical experts work with clients across exciting and niche sectors, delivering complex yet efficient and sustainable solutions, often to a demanding, highly regu...Read More>>.

NRL is seeking a Principal Mechanical Design Engineer to join Tenet Consultants Ltd. in Gaerwen, Wales. The role involves leading design studies and teams in a highly regulated environment, specifically within the nuclear sector.Successful...Read More>>.

WSP is seeking a Principal Mechanical Engineer to lead prestigious projects in the UK. The role involves supervising detailed designs, client interaction, and managing a multidisciplinary team.The ideal candidate will have strong skills in...Read More>>.

The Principal Mechanical Engineer at ETA is a key member of the engineering team, responsible for the mechanical design, thermal performance, and physical integration of electric motors within ETA products. This role focuses on deliverin...Read More>>.

OverviewThe OpportunityThe Energy Transition is the fundamental shift underway in how we, as a global community, produce, distribute, and consume energy, with the overarching goal of transitioning to a lower carbon future...Read More>>.

Principal Mechanical Engineer Location UK - Glasgow - 177 Bothwell Street Responsibilities Prepare feasibility studies, outline design, detailed design and construction support Produce plant...Read More>>.

Principal Mechanical Engineer – Nuclear & Green Energy Projects Location: UK-wide (Hybrid Working Available) Hours: 37‑hour working week Clearance Required: British Nationals only (BPSS minimum) Why Join This Te...Read More>>.

This range is provided by Gold Group Ltd. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more.Base pay rangeDirect message the job poster from Gold Group LtdAssociate Direc...Read More>>.

ASSYSTEM, located in the UK, is seeking a talented engineer with significant experience in nuclear engineering. You will support requirements capture, assist with engineering activities, and mentor senior team members.The ideal candidate wi...Read More>>.

Role descriptionWe're hiring for multiple Principal Mechanical Design Engineer roles on exciting upcoming projects and programmes for AMP8, and be part of a team driving innovation and excellence. You'll play a key role as a leader wit...Read More>>.

OverviewPrincipal Mechanical Engineer (Building Services) – Feltham, Middlesex; Basingstoke, Southampton, Guildford (UK locations).What if you could do the kind of work the world needs? At WSP, you can access our global scale,...Read More>>.

Snc-Lavalin seeks an Associate Director Mechanical Engineer in Birmingham to lead technical design for complex projects in the Water market. Candidates should have a degree in Mechanical Engineering, Chartered status, and experience in delivering lar...Read More>>.

OverviewMy Client is recruiting for an Associate Director Mechanical Engineering in the Water SectorLocation: Peterborough, Cambridge, London or SurreyWe are looking for an energetic and experienced Associate Director Mec...Read More>>.

Associate Mechanical Director – Data Centre Infrastructure London | Hybrid (3 days in office) Intermittent travel to project sites (project dependent) Spencer Ogden are supporting a rapidly scaling AI infrastructur...Read More>>.

Primary Location: UK - Glasgow - 177 Bothwell Street Job Description Join our dynamic Water Team as an Associate Director Mechanical Engineering in one of our Scotland offices – while also enjoying hybrid workdays....Read More>>.

The Opportunity: Heavy Mechanical Engineer - Mobile Contract: Permanent Location: Manchester United Plant Services is an engineering and asset management business, renowned for providing market leading engineering support a...Read More>>.

A leading global engineering firm in the United Kingdom is looking for a Principal Mechanical Engineer to manage innovative projects and deliver sustainable solutions. You will work within a supportive team, managing your own projects, focusing on pr...Read More>>.

We are recruiting on behalf of our client Whessoe Engineering, for an experienced Senior Mechanical Engineer to join their engineering delivery team in Darlington. Our client is supported by Samsung C&T and is part of a globally recognis...Read More>>.

Thorlabs is seeking a Senior Mechanical Design Engineer to join their Engineering Team in Ely, UK. The role involves designing products from conception to production while ensuring adherence to manufacturing and compliance standards. Applicants shoul...Read More>>.

Recruit4Mum is seeking a Senior Mechanical Design Engineer in Stroud to join the Mechanical Design team. The role involves designing efficient solutions for high precision optical and electro-mechanical products, ensuring compliance to standards a...Read More>>.

Job Overview The Senior Mechanical Engineer uses best practices and knowledge of internal or external issues to improve the mechanical discipline within McDermott. They will act as a resource for colleagues with less experience and sha...Read More>>.

Join the Fusion and Modular Nuclear Business Unit. Assystem has an exciting opportunity for a Senior Principal Mechanical Engineer to join our expanding Fusion and Modular Nuclear (FMN) business unit. As leaders in the design and development of...Read More>>.

A leading engineering company in the UK is seeking a Senior Mechanical Engineer to design and develop mechanical solutions for innovative water treatment technologies. You will play a crucial role in managing technical aspects of projects, ensuring d...Read More>>.

At HDR, our employee-owners are fully engaged in creating a welcoming environment where each of us is valued and respected, a place where everyone is empowered to bring their authentic selves and novel ideas to work every day. As we work to wea...Read More>>.

Water & Wastewater InfrastructureLocation: St AlbansEmployment Type: Permanent The Opportunity Our client is seeking an experienced Senior Mechanical Design Engineer to join their growing en...Read More>>.

# Senior Mechanical Engineer – Pressure Compliance* Nuclear* Permanent /* Bridgwater* United Kingdom* 09/06/26* On site* ShareI apply##️ **About Assystem** At Assystem, our mission is to accelerate the energy transition worldwide. Our 8,000 Swit...Read More>>.

Enpure Ltd is a progressive organization in water and wastewater services and is looking to recruit a self‑motivated and engaging Principal Mechanical Engineer with strong analytical skills and experience in technical design, delivery and man...Read More>>.

The Mechanisms team at SSTL seeks an experienced success driven and committed mechanisms engineer to support the existing and expanding range of space mechanisms used on SSTL spacecraft. This is an amazing opportunity for an engineer to work on...Read More>>.

Stantec is seeking an experienced Mechanical Engineer based in Leeds, UK, to lead mechanical design efforts on both infrastructure and non-infrastructure projects. The role involves managing the full project life cycle while collaborating closely...Read More>>.

Prime-Appointments is seeking a Senior Mechanical Design Engineer in Newmarket to lead innovative product development projects. This fixed-term contract role involves overseeing the design and production of new products, driving technical projects...Read More>>.

AECO is looking for a Principal Mechanical Engineer to join their water sector team in Exeter. This full-time position focuses on delivering complex projects, supporting key programmes, and shaping sustainable water solutions across the UK....Read More>>.

AtkinsRéalis is searching for an Associate Director to lead Mechanical Engineering within their Bioresources Design team in Epsom, UK. This role involves providing technical leadership, driving projects for water treatment, and ensuring adherence...Read More>>.

Principal Mechanical Engineer - Equipment & TechnologyWallingford, UKAt HR Wallingford, we design smart, resilient solutions across the natural and built environments to help everyone live and work more sustainably with water. B...Read More>>.

AECOM is searching for a Principal Mechanical Engineer to join their South West and Wales water team with a focus on delivering significant capital programmes across the UK water sector. You will support various projects, ensuring high-quality mec...Read More>>.

We are currently looking for a talented and motivated Principal Mechanical Engineer to join our design team in Leeds. The role supports a multi‑disciplinary department that delivers detailed designs for water‑related projects across the UK....Read More>>.

ASSYSTEM is looking for a Senior Mechanical Engineer to join their team in Derby, UK. The role requires a minimum of five years of experience in the nuclear sector and understanding of mechanical design and safety requirements. Key responsibilities i...Read More>>.

Senior Mechanical Engineer – Leeds Sweco is looking for a talented and motivated Senior Mechanical Engineer to join our design team in Leeds. This role can be worked flexibly with a minimum of 3 days per week in the office and t...Read More>>.

Mechanicaldesigndirectory is hiring a Senior Mechanical Engineer to lead product developments in a dynamic and innovative environment. This role involves working within multidisciplinary teams, managing projects, and providing creative solutions t...Read More>>.

WPS is looking for a skilled Mobile Mechanical Engineer based in Enfield to join their Facilities Management team. The role involves delivering high-quality planned and reactive maintenance across multiple sites in North London.The ideal ca...Read More>>.