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

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 Mechanical Engineer

Company IconHDR
Location IconManchester

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>>.

Posted: June 6th, 2026
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Senior Mechanical Engineer

Company IconTetra Tech Europe
Location IconLeeds

Purpose & Scope of the Role As a Senior Mechanical Building Services Engineer, you will support and enhance project delivery across a diverse portfolio spanning sectors such as life sciences, defence, education, commercial and renewabl...Read More>>.

Posted: June 6th, 2026
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Senior Mechanical Engineer

Company IconRivan Industries
Location IconLondon

We’re looking for a talented Senior Mechanical Engineer to own one of our sub-systems to drive that forward, tasked with uncovering new ways of thinking about our system integration, performance, longevity, and manufacturability. If you thriv...Read More>>.

Posted: June 6th, 2026
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Senior Mechanical Engineer

Company IconUltra Maritime
Location IconLondon

Protecting What Matters. Powering The Future Of Naval Technology. Ultra Maritime is a global leader in advanced maritime defence solutions. We operate at the forefront of innovation, delivering technologies that protect lives, secure n...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 IconAssystem
Location IconBristol

Company Overview Assystem is a global leader committed to accelerating the energy transition. With 7,750 employees across 12 countries, we tackle the monumental task of switching to low‑carbon energy. Our 55+ years of experience in h...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

Company IconLeidos
Location IconEssex

As a Mechanical Technical Lead, you will be responsible for the design and development of tools, fixtures, and equipment used in the manufacturing process. You will work closely with in‑house engineers and the wider Leidos cross‑functional...Read More>>.

Posted: June 25th, 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 Mechanical Engineer

Company IconL3Harris Technologies
Location Icon

L3Harris is dedicated to recruiting and developing high‑performing talent who are passionate about what they do. Our employees are unified in a shared dedication to our customers’ mission and quest for professional growth. L3Harris provides...Read More>>.

Posted: June 27th, 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

Company IconAIXTRON Ltd (UK)
Location IconSwavesey

Senior Mechanical Engineer Overview As part of a multi‑disciplined team and a modern Engineering department, this role involves the continuous improvement of the Company’s world leading products through leading‑edge mech...Read More>>.

Posted: July 24th, 2026
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Senior Mechanical Engineer

Company IconAIXTRON SE
Location IconSwavesey

Swavesey, United Kingdom // Engineering // With Professional ExperienceAs part of a multi-disciplined team and a modern Engineering department, this role involves the continuous improvement of the Company’s world leading products thr...Read More>>.

Posted: July 26th, 2026
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Principal Mechanical Engineer

Company IconBabcock Mission Critical Services España SA.
Location IconWarrington

Principal Mechanical Engineer Location: Bristol or Warrington, Cheshire Compensation: Competitive Salary + Benefits Role Type: Full time / Permanent Drive Innovation in Defence Nuclear Engineer...Read More>>.

Posted: July 31st, 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 Mechanical Engineer

Company IconBretagne Pôle Naval
Location IconFalmouth

Falmouth (UK), Anglesey (Wales), Quimper (France) 29/09/2026 - 12:00 Inyanga Maritime is at the forefront of the global marine renewable energy industry, combining world-class engineering with specialist marine operations to del...Read More>>.

Posted: August 9th, 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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Senior Mechanical Engineer

Company IconSTU STEMCELL Technologies UK Ltd.
Location IconWaterbeach

Job Description SummaryAs a global leader in life sciences research support, STEMCELL Technologies is looking for a Senior Mechanical Engineer to join our Instrumentation UK engineering team. In this role, you will play a pivotal part...Read More>>.

Posted: August 17th, 2026
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Senior/Principal Mechanical Engineer

Company IconMatchtech
Location IconCambridge

My Client is recruiting for a Senior and Principal Mechanical Engineer in the Water Sector.Locations: Cambridge, Peterborough, London or Surrey - HybridAre you a Mechanical Engineer who is passionate about making the world a bette...Read More>>.

Posted: August 17th, 2026
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Principal Mechanical Engineer

Company IconAECOM
Location IconLane

Work with Us. Change the World.At AECOM, we're delivering a better world. Whether improving your commute, keeping the lights on, providing access to clean water, or transforming skylines, our work helps people and communities thrive. W...Read More>>.

Posted: August 20th, 2026
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Responsible Mechanical Engineer

Company IconNES Fircroft
Location Icon

Responsible Mechanical EngineerTeesside | PermanentYou'll have responsibility across areas including:Mechanical asset integrity covering fixed and rotating equipmentPressure systems integrity, including PS...Read More>>.

Posted: August 21st, 2026
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Senior Mechanical Engineer

Company IconSTEMCELL Technologies
Location IconCambridge

Job Description SummaryAs a global leader in life sciences research support, STEMCELL Technologies is looking for a Senior Mechanical Engineer to join our Instrumentation UK engineering team. In this role, you will play a pivotal...Read More>>.

Posted: August 22nd, 2026
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Responsible Mechanical Engineer

Company IconNES Group Ltd
Location Icon

Responsible Mechanical EngineerTeessidePermanentI'm recruiting for a Responsible Mechanical Engineer to join the engineering leadership team at a major industrial manufacturing site in Teesside....Read More>>.

Posted: August 23rd, 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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Senior Mechanical Engineer (Valves)

Company IconMatchtech
Location Icon

Are you an experienced mechanical engineer looking to play a critical role in one of Europe's largest clean energy projects? Our client are seeking a Mechanical/Valve Engineer to support the Hinkley Point C nuclear new build projectKe...Read More>>.

Posted: August 28th, 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 — 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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