Principal Mechanical Engineer

Company IconOrano
Location Icon

Within the Engineering team, the Mechanical Engineer will integrate operational engineering multi-disciplines teams delivering projects at various phases, from FEED to commissioning, or in assistance to Plant Operation in the UK. Responsibilities...Read More>>.

Posted: June 6th, 2026
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Principal Mechanical Engineer

Company IconAdvance TRS
Location IconRhyl

Mechanical Design Engineer (Lead / Principal grade) Our client is seeking a highly experienced Principal Mechanical Engineer (contract or permanent) to lead the design and delivery of complex water and wastewater infrastructure project...Read More>>.

Posted: June 6th, 2026
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Principal Mechanical Engineer

Company IconCorriculo Recruitment
Location Icon

Corriculo Recruitment provided pay rangeThis range is provided by Corriculo Recruitment. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more.Base pay rangePrincipal...Read More>>.

Posted: June 6th, 2026
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Principal Mechanical Engineer

Company IconTetra Tech Europe
Location IconBelfast

As we win new work our workload increases, which means we have an exciting opportunity to join our established Belfast team. You will have responsibility for design and management of mechanical building services projects in complex buildings, i...Read More>>.

Posted: June 6th, 2026
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Principal Mechanical Engineer - (2017)

Company IconHoare Lea
Location IconGlasgow

OverviewHoare Lea is a human-centric and planet-conscious engineering consultancy. We offer intelligent and sustainable solutions to complex design challenges for the built environment throughout the UK and further afield. We provide a...Read More>>.

Posted: June 6th, 2026
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Principal Mechanical Engineer

Company IconHartmann Young
Location IconCambridge

Principal Engineer (Mechanical) - Diagnostic Medical Devices Hartmann Young have partnered with an innovative biotechnology company in the East Anglia region of the UK, who are expanding their engineering team with the addition of a Pr...Read More>>.

Posted: June 6th, 2026
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Principal Mechanical Engineer

Company IconBelcan
Location IconEast Midlands

Advanced Engineering & Clean‑Tech MachineryPermanentHybridAre you an experienced Mechanical Design Engineer looking to take the lead on complex, cutting‑edge engineering projects?We’re supporting a pioneering engi...Read More>>.

Posted: June 6th, 2026
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Principal Mechanical Engineer

Company IconETA Green Power, Ltd.
Location IconHethel

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>>.

Posted: June 6th, 2026
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Senior/Principal Mechanical Engineer

Company IconSnc-Lavalin
Location IconManchester

Senior/Principal Mechanical Engineer page is loaded## Senior/Principal Mechanical Engineerlocations: GB.Manchester.Piccadilly: GB.Belfast - The Vantage: GB.Newcastle upon Tyne.Albany Court: GB.Glasgow.2 Atlantic Square York Street: GB.Leeds...Read More>>.

Posted: June 6th, 2026
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Senior / Principal Mechanical Engineer

Company IconKonker
Location IconBillericay

Senior / Principal Mechanical Engineer This role offers the opportunity to lead mechanical design within building services projects and progress toward a leadership position within the department. Base pay range: Up to £...Read More>>.

Posted: June 6th, 2026
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Senior/Principal Mechanical Engineer

Company IconRamboll
Location IconBristol

Senior/Principal Mechanical Engineer – Buildings Services Join Ramboll as a Senior/Principal Mechanical Engineer to help close the gap to a sustainable future in our Building Services team. Job Description Are you exc...Read More>>.

Posted: June 6th, 2026
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Senior Mechanical Engineer Contract

Company IconEnvirogen Group
Location Icon

Envirogen Group UK Limited is seeking a talented Senior Mechanical Engineer on a contract basis to join our innovative engineering team. In this role, you will be responsible for designing and developing mechanical components and...Read More>>.

Posted: June 6th, 2026
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Mechanical Engineer - Asset Integrity

Company IconKent
Location IconScotland

OverviewMechanical Engineer - Asset Integrity at Kent. Based in Aberdeen, the successful candidate will be part of a multi-discipline Asset Integrity Team supporting a wide range of clients in the North Sea region and globally. The...Read More>>.

Posted: June 6th, 2026
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Senior Mechanical Engineer Contract

Company IconEnvirogen Technologies Inc.
Location Icon

Envirogen Group UK Limited is seeking a talented Senior Mechanical Engineer on a contract basis to join our innovative engineering team. In this role, you will be responsible for designing and developing mechanical c...Read More>>.

Posted: June 6th, 2026
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Senior Mechanical Engineer - Turbines

Company IconAssystem GmbH
Location IconGlasgow

Our Vacancy# Senior Mechanical Engineer – Turbines* Nuclear* Permanent /* Glasgow* United Kingdom* 06/03/26* On site* Share **About Assystem** Assystem is an international engineering and project management group accelerating the energy transiti...Read More>>.

Posted: June 6th, 2026
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Senior/Principal Mechanical Engineer

Company IconAtkinsRéalis
Location IconManchester

Overview Shape the future of our cities and environments. Are you a Mechanical Engineer who is passionate about making the world a better place? Are you ready to take up a vital role in some of the UK’s most exciting and innovative p...Read More>>.

Posted: June 6th, 2026
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Senior & Principal Mechanical Engineer

Company IconProgressive
Location IconWarrington

OverviewSenior & Principal Mechanical Engineer – Contract role for a nuclear client, via Progressive Recruitment. Location: Warrington, Newbury, or Bristol. Duration: 12 months. Inside IR35.RequirementsExtens...Read More>>.

Posted: June 6th, 2026
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Electrical Controls - Mechanical Engineer

Company IconBabcock International Group
Location IconPlymouth

Electrical Controls - Mechanical Engineer At Babcock we’re working to create a safe and secure world, and if you join us, you can play your part as an Electrical Controls - Mechanical Engineer at our Devonport Royal Dockyard s...Read More>>.

Posted: June 6th, 2026
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Design - Senior Mechanical Engineer

Company IconAvove Limited
Location IconWarrington

Working here isn’t just a job. You canadvance your career at Avove, and we’ll reward you with a range of benefits that recognise great work. We provide full training and continuous development to help you reach your potential. We str...Read More>>.

Posted: June 8th, 2026
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Principal Mechanical Engineer

Company IconNUVIA
Location IconWarrington

Location: Birchwood Park, Risley or Albion Square, Cumbria Arrangement: Permanent or Contract NUVIA UK's Technical Services & Consulting department is fast growing with hybrid opportunities available up and down the...Read More>>.

Posted: June 14th, 2026
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Principal Mechanical Engineer

Company IconNUKEM Ltd.
Location IconWarrington

Job title Principal Mechanical Engineer Contract type Permanent Telework? Hybrid (telework possible) Description of the assignment Position – Principal Mechanical Engineer...Read More>>.

Posted: June 14th, 2026
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Senior Mechanical Engineer, Cambridge

Company IconMechanicaldesigndirectory
Location IconCambridge

To work within multi-disciplinary teams on major development projects, applying your engineering abilities to implement sophisticated technologies into new products. This is an excellent opportunity for an engineer with the ambition and...Read More>>.

Posted: June 20th, 2026
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Senior Mechanical Engineer (Water)

Company IconSweco
Location IconLeeds

Do you have what it takes to transform society? We are currently looking for a talented and motivated Senior Mechanical Engineer to join our design team in Leeds as part of a multi‑disciplinary department providing detailed designs for...Read More>>.

Posted: June 21st, 2026
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Senior/Principal/Mechanical Engineer

Company IconRullion Ltd
Location IconLondon Colney

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 th...Read More>>.

Posted: July 4th, 2026
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Senior Opto-Mechanical Engineer

Company IconOlix Computing
Location IconLondon

AI is growing faster than any technology in history and the explosion in demand has created a massive infrastructure gap; we can no longer build chips or power stations fast enough to keep up. The industry is still leaning on a ten-year-old har...Read More>>.

Posted: July 13th, 2026
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Principal Mechanical Engineer

Company IconWSP in the UK & Ireland
Location IconCardiff

Job Summary WSP is seeking a Principal Mechanical Engineer to lead mechanical engineering design and delivery for process projects in fine chemicals, food, and pharmaceutical sectors. Roles and Responsibilities Le...Read More>>.

Posted: July 20th, 2026
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Principal Mechanical Engineer

Company IconJN Bentley
Location Icon

Internal applicants are welcome. Mott MacDonald Bentley (MMB) is a capital delivery partner for Wessex Water. We manage projects across the region up to 2030, with potential for extension. Wessex Water serves 2.9 million customers...Read More>>.

Posted: July 23rd, 2026
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Principal Mechanical Engineer

Company IconAdvance Training & Recruitment Services
Location IconExeter

Principal / Associate Mechanical Engineer – Water Location: Exeter (Hybrid)Salary: Up to £75,000 + Excellent Benefits An exciting opportunity has arisen for a Principal / Associate Mechanical Engineer to join a leading e...Read More>>.

Posted: July 24th, 2026
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Senior Mechanical Engineer - Leeds

Company IconTetra Tech Europe
Location IconLeeds

At Tetra Tech you will support the delivery of high-quality mechanical building services projects across a diverse range of sectors, helping to develop and strengthen a busy and successful team in Manchester.Purpose & Scope of the Role...Read More>>.

Posted: July 28th, 2026
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Mechanical/Senior Mechanical Engineer

Company IconAldwych Consulting Ltd
Location IconBirmingham

Senior Mechanical Design Engineer Berkhamsted or Birmingham | Hybrid WorkingI'm currently working with a well-established, privately owned engineering consultancy that is looking to appoint a Senior Mechanical Desi...Read More>>.

Posted: July 30th, 2026
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Spacecraft AIT Mechanical Engineer

Company IconExpleo Group
Location IconStevenage

As part of our continued support to our customer in the space sector we are looking for a number of Mechanical AIT Engineers to join us on a permanent or contract basis. The salary/rate is negotiable based on experience, seniority, etc. The rol...Read More>>.

Posted: July 31st, 2026
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Senior / Principal Mechanical Engineer

Company IconAdvance Training & Recruitment Services
Location IconPreston

Job Title: Mechanical Design Engineer (Lead / Principal grade)Location: Preston (Hybrid Working)Salary: £60,000 – £70,000 + benefits or Contract Rate: £50 – £55ph LtdOverview:Our client...Read More>>.

Posted: August 7th, 2026
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Principal Mechanical Engineer

Company IconAECO
Location IconCroydon

Primary Location: UK - Croydon, 69 Park LaneCompany DescriptionWork with Us. Change the World.At AECOM, we're delivering a better world. Whether improving your commute, keeping the lights on, providing a...Read More>>.

Posted: August 8th, 2026
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Senior/Associate Mechanical Engineer

Company IconRider Levett Bucknall RLB
Location IconManchester

Department: Built Asset ConsultancyLocation: ManchesterCompensation: £45,000 - £85,000 / yearTitle: Senior / Associate Mechanical EngineerDiscipline: M&E EngineeringSect...Read More>>.

Posted: August 15th, 2026
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Senior Mechanical Engineer Consultant

Company IconCBRE Group, Inc.
Location IconLondon

Due to continuous demands for their expertise, we are currently expanding our Engineering Consultancy team and looking for a Senior Mechanical Engineer to join our market leading technical asset management team, on a full time permanent basis....Read More>>.

Posted: August 16th, 2026
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Principal Mechanical Engineer

Company IconARCADIS
Location IconLondon

Arcadis is the world's leading company delivering sustainable design, engineering, and consultancy solutions for natural and built assets. We are more than 34,000 people, in over 30 countries, dedicated to improving quality of life. Ever...Read More>>.

Posted: August 17th, 2026
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Principal Mechanical Engineer

Company IconARCADIS Group
Location IconLondon

Role description:We are looking for a Principal Mechanical Engineer with previous experience working in a consultancy environment to join our Places Design Practice. In this role, you’ll be delivering elegant and efficient mechanical...Read More>>.

Posted: August 17th, 2026
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Principal Mechanical Engineer

Company IconChess Dynamics
Location IconHorsham

Role Purpose Chess Dynamics is an established Leading Design and Manufacturing business, with several sites across the UK. Our product/systems range is cutting edge and services the defence industries with solutions that fully meet spe...Read More>>.

Posted: August 17th, 2026
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Principal Mechanical Engineer - London

Company IconBryden Wood
Location IconLondon

At Bryden Wood, we are on a mission to accelerate decarbonisation, deploy new technologies, and integrate design and delivery for critical infrastructure. As inventive thinkers, designers, engineers, and technical experts, we combine creativity...Read More>>.

Posted: August 21st, 2026
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Principal Mechanical Engineer

Company IconRivan
Location IconLondon

Rivan Industries is a synthetic fuel company decarbonising heavy industry. We’re making synthetic fuel cheaper than fossil fuels, sustaining life on earth by keeping the CO 2 locked underground. Here’s our entire business plan.Engineeri...Read More>>.

Posted: August 24th, 2026
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Principal Mechanical Engineer

Company IconThe Form Partnership
Location Icon

We're excited to offer a brand-new opportunity for a Principal Mechanical Engineerto join our growing team inBristol. The Form Partnership are a new, dynamic and agile MEP and Sustainability engineering design consultancy who are...Read More>>.

Posted: August 25th, 2026
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Mechanical Engineer (GreenTech for Manufacturing)

Company IconEcm Selection
Location IconCambridge

Based at their offices in south Cambridgeshire, this engineering company provides highly specialised expertise for their customers across Europe and further afield. Their expertise is in designing bespoke industrial systems used for efficient a...Read More>>.

Posted: August 29th, 2026
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Principal Mechanical Engineer

Company IconweServed
Location IconPlymouth

Job Title: Principal Mechanical Engineer Location: Plymouth, Devon Compensation: £57,300 - £71,600 Depending on Experience + Benefits Role Type: Full time / Permanent Role ID: SF72890 At Babcock we...Read More>>.

Posted: August 30th, 2026
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Senior Mechanical Engineer: Design to Ops Lead

Company IconDalkia UK (Scotland)
Location IconGlasgow

Dalkia UK is seeking a skilled Mechanical/Public Health design engineer to support front-end development, installation and lifecycle operations. You will investigate design issues, develop innovative solutions and work with installation teams to d...Read More>>.

Posted: September 2nd, 2026
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Lead Mechanical Engineer – Nuclear Power Project

Company IconBalfour Beatty Ground Engineering
Location IconLeiston

About The RoleWe have a fantastic opportunity for aLeiston, Suffolk.Be part of this ‘once in a generation’ project that will deliver clean energy to 6 million homes for the next 60 years...Read More>>.

Posted: September 2nd, 2026
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Senior ISO Compliance & IMS Lead – On-site Leeds

Company IconApsley Recruitment Limited
Location Icon

Apsley Recruitment Limited is seeking an experienced Senior ISO Compliance Consultant to design, implement and continually improve our client's Integrated Management System in the UK. You will maintain certifications (ISO 9001, 27001, 45001, 20000...Read More>>.

Posted: September 27th, 2026
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Senior Mechanical Engineer — Sustainable Building Systems

Company IconRamboll Group
Location IconLondon

Ramboll in London is seeking a Senior Mechanical Engineer to deliver detailed designs on complex projects within a multidisciplinary team. You will mentor junior engineers and drive client-focused outcomes across Building Services and related disc...Read More>>.

Posted: September 30th, 2026
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Senior Mechanical Engineer - Switchgear Design Lead

Company IconQuestech Recruitment Ltd
Location IconBradford

Questech Recruitment Ltd invites applications for a Senior Mechanical Engineer role focusing on switchgear applications in Bradford, West Yorkshire, UK. The successful candidate will apply mechanical engineering expertise across design, analysis,...Read More>>.

Posted: September 30th, 2026
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Mobile Mechanical Engineer – Field Service & PPM

Company IconPareto FM
Location IconLondon

Pareto FM is seeking a Mobile Maintenance Engineer with a mechanical bias to cover sites across Heathrow, Reading and the M25 corridor. You’ll perform planned and reactive maintenance, fault finding and support HVAC and mechanical plant with ind...Read More>>.

Posted: September 30th, 2026
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