358 mechanical project engineer jobs found

We are looking for an exceptional and very technically strong Mechanical Building Services Project Engineer with experience of working on large size multi-unit residential and mixed use residential/commercial developments. This is a long term contract position based in Central London, SE1. Our client is a specialist M&E Contractor. This role is with the established Mechanical arm of the business. The position reports to the Contract Director. You will be responsible for overseeing Mechanical Building Services Engineering on the Project. We are looking for a practically minded and technically strong Engineer who can liaise effectively with the consultant, client and on site teams, and maintain a calm and pragmatic approach to ensure the technical success of Mechanical Building Services Installation. This is an Engineer not a Project Manager role although is a comparable level within the company structure. We are looking for a Technical, site-based Mechanical Engineer who knows...

Mechanical Proejct Engineer / Project Manager Stoke On Trent Our client are an established M&E contractor within the commercial, education and retail sectors with a steady work book for 2026 and beyond, and are now looking to onboard an additional project manager to work alongside the existing team. As a Mechanical Project Manager you will be responsible for: * Plan, coordinate and direct projects. * Manage project costs including material and labour expenses. * Prepare and deliver progress reports. * Communicate and collaborate with architects, contractors and clients. * Produce CVR and monthly job cost reports. * Oversee and troubleshoot Mechanical / HVAC installations and repairs * Conduct site inspections and ensure project deadlines are met * Address and resolve any issues or disputes related to the project * Maintain a safe, clean, and compliant work environment * Provide technical guidance and mentorship to team members. * Producing...

Based in Kettering NN16 A leading, established and highly successful provider of mechanical and electrical installation services to commercial and industrial buildings seek the solid appointment of a skilled Mechanical Project Engineer from an M&E / Building Services electrical installation projects background. Those with M&E installations experience in commercial and or industrial environments are of serious interest as a Mechanical Project Engineer or similar. We are looking to make an immediate appointment for an important ongoing project. Candidates highly sought after are those naturally from an M&E / Building Services background, ideally with direct working experience in the project delivery of mechanical installations you would expect to find in commercial and industrial settings. Those with any hospital / healthcare buildings Mechanical services installation are highly sought after; this is not essental for the role though. You will be responsible for supporting...

Mechanical Project/Design Engineer Opportunity – Leading Renewables Contractor - London MK Search are working with a market leading renewables and decarbonisation M&E contractor who are currently looking to recruit a Mechanical Project / Design Engineer to join their growing team. This is an excellent opportunity for an early-career engineer looking to develop their technical and project experience within a supportive and professional environment. The company in question have recently won a variety of new contracts across London. The Role Working alongside experienced engineers and project teams, you will assist with the design, coordination, and delivery of decarbonisation on leisure, commercial, education and residential projects. The role offers exposure to both project and design work, with opportunities to build hands-on experience across a range of mechanical systems. The Ideal Candidate We are keen to speak with candidates who have: * A degree or diploma in...

Mechanical Design Engineer 12 Month Fixed Term Contract Newmarket, Suffolk £40,000 – £50,000 + 5% Bonus + Excellent Benefits Some engineering roles are about maintaining drawings. This one is about building something that is scaling fast. Our client, a specialist engineering manufacturer, is entering a significant phase of growth. Production has ramped, facilities have been redesigned to support mass manufacture, and the mechanical design function now sits at the heart of that transition. They are now looking for a Mechanical Design Engineer to join them on a 12-month fixed-term contract. This is project-based work with genuine potential to become permanent as the business continues to expand. This role bridges new product development and production engineering. You will not be sitting in isolation, modelling parts. You will be working closely with engineers, production teams and wider stakeholders to turn prototypes into robust, manufacturable products. The opportunity...

Job Title Commissioning Engineer (Data Centres – Europe) Overview We are currently recruiting for a Commissioning Engineer to support delivery on a live data centre project across Europe. This is a hands-on, site-based role focused on commissioning, testing, and system verification within a live or critical environment. The successful candidate will work alongside an established commissioning team to ensure systems are installed, tested, and operating in line with project and performance requirements. The Role * Support commissioning activities across electrical and/or mechanical systems * Assist with testing, validation, and system performance checks * Work alongside commissioning teams during live project phases * Support energisation and final system verification * Follow commissioning procedures and site protocols * Assist in identifying and resolving issues during commissioning Requirements * Electrical or...

Principal Pipeline Engineer - Low Carbon Location: Remote with occasional visits to office for Project Meetings Team: Energy Transition Shape the future of low‑carbon infrastructure. We're driven by a simple belief: the world we design today should create a cleaner, greener and safer tomorrow. We push boundaries, embrace innovation and collaborate across a global network of experts to deliver solutions that stand the test of time. Join us, and you'll be part of a team that takes pride in its people, its purpose and its impact. About the Role We're looking for a Principal Pipeline Engineer to join a growing Energy Transition Team. This is an exciting opportunity to lead the development of mechanical and pipeline designs across a wide range of transmission projects, including: * Natural gas (below and above 7 bar) * Hydrogen transmission * Carbon dioxide pipelines * Wider low‑carbon and energy transition infrastructure You'll work as part of a large multidisciplinary...

Mechanical Engineering Lead - Reading, UK Contract: 12 Months Pay Rate: £56.91/ph - £75.31/ph Our client is seeking an experienced Mechanical Engineering Lead to play a pivotal role in a major petrochemical and refinery upgrade programme. This is an exciting opportunity to guide the technical definition of a world‑scale mixed‑feed steam cracker and associated refinery enhancements, ensuring designs are safe, operable, and cost‑effective while supporting ambitious project objectives. Role Overview As the Mechanical Engineering Lead, you'll represent the client within a joint venture project management team, working closely with contractors to optimise scope, manage technical risk, and deliver engineering solutions that meet standards and performance expectations. You'll bring extensive experience in mechanical and static equipment engineering, enabling you to challenge, influence, and support decisions across the pre‑FEED and FEED stages. Key Responsibiities Provide technical...

Project Engineer (Contract) - Defence Sector Location: Deeside Security Clearance: SC required Overview We are recruiting for a Project Engineer on a long term contract to join a leading defence engineering organisation supporting critical avionics, electronics, and component programmes for the UK Armed Forces. This Project Engineer role offers the opportunity to develop your engineering knowledge and project delivery capability, con-tributing to high priority Defence programmes. As a Project Engineer you will be responsible for delivering a range of engineering projects (both acquisition and in-service support) using structured project management methodologies such as PRINCE2/APM. There may be occasional travel to other MOD locations when required. Key Responsibilities Lead and manage engineering projects from initiation through to delivery Plan, organise, and oversee all project activities to ensure successful outcomes Develop and maintain system requirements, including...

Principal Mechanical Engineer - Low Carbon Location: Remote with occasional visits to the office for project meetings Team: Energy Transition Shape the future of low‑carbon energy! We're looking for a Principal Mechanical Engineer to join our client's growing Energy Transition Team and play a leading role in delivering the next generation of low‑ and zero‑carbon energy projects. If you thrive on solving complex engineering challenges and want to influence the UK's transition to cleaner energy, this is a role where your impact will be felt for decades. About the Role As a senior member of a multidisciplinary engineering group, you will lead the development of mechanical designs across a diverse portfolio of energy projects - from early‑stage concept work through to construction, operation and eventual decommissioning. The work spans: Conventional power generation Energy‑from‑waste facilities Industrial energy systems Carbon capture, utilisation and storage (CCUS) Future...

Mechanical Design Engineer (NX) Remote (occasional site visits to Portsmouth) £56.41 (inside IR35) Defence 6 months Applies an in depth understanding of design processes, tools, systems and techniques to an extensive range of design solutions associated with complex assemblies, components or systems. Is able to develop design solutions from the bottom up with limited information, applying the various design requirements to achieve appropriate design solutions. Working as part of a multi-functional team, the successful applicant will be currently working in a senior designer role and have many years' experience of using CAD software to create 2D and 3D solid modelled designs, for a wide range of products from small components to large complex sub-systems. The successful applicant will take the Lead Design Engineers conceptual information or component list and develop into a detailed design and data pack that is suitable for manufacture. They will then manage the...

One of the most well-known nuclear companies in the UK is looking for senior mechanical engineers to work on some of the most prestigious projects in the sector. This is a fantastic opportunity for a senior mechanical engineer to work on a massive project within the defence/nuclear sector. Job Title - Senior Mechanical Engineer Location -  Warrington 2/3 days a week Contract Length - 12 Months Pay Rates - Up to £60.00 an hour (Inside IR35) Key responsibilities: Provide technical support to the team for you specialist area and ensure you are working to deadlines effectively Make engineering decisions from a project and technical stand point Act as the technical authority or lead mechanical engineer when required to do so. Ensure all change are assessed and managed accordingly to project scope Ensure the procedures and engineering codes are consistently met and managed throughout the project lifecycle. Produce and review all technical documents and approve calculations, analysis,...

We are seeking an experienced Commissioning Engineer with Mechanical experience to support a major defence project at a secure, highly regulated site near Reading. This is mid-level role, supporting the management team; site-based & requiring a high level of technical expertise, and experience in commissioning, testing, and assurance of mechanical systems and equipment within safety-critical environments. Role: Commissioning Engineer - Mechanical Bias Location: Reading (site-based) Salary: £40 Per Hour (Based on year's experience) Key Responsibilities ·Commissioning, testing, and validation of mechanical equipment on a complex defence project and on occasion provide mentorship to junior commissioning engineers and site teams. ·Follow commissioning strategies, test procedures, and method statements, alongside supporting functional testing, fault finding, and troubleshooting of complex mechanical systems. ·Ensure all commissioning activities comply with project requirements,...

Our client, a Defence and Security supplier is looking for a Mechanical Design Engineer to join them on a contract basis at their site in Maidenhead. Due to the nature of the role, applicants must hold the sole British nationality and current SC Clearance 6-month initial contract £60 p/h Umbrella, inside IR35 Fully onsite in Maidenhead due to the nature of the role Job Description: Design, develop, test, and document mechanical assemblies through the full product lifecycle. Deliver robust mechanical solutions using company engineering tools and processes. Create and review mechanical documentation: design packs, analysis reports, plans, and procedures. Define and analyse mechanical performance and functional behaviours. Optimise designs for various manufacturing methods (machining, moulding, extrusion, sheet metal, casting). Perform tolerance analysis for precision parts and complex assemblies. Produce designs compliant with MIL‑STD, DEF‑STAN, EMC, TEMPEST, and environmental...

About the Role Our client, a leading provider of mechanical, electrical, and telecommunication solutions for major infrastructure projects, is seeking a highly capable Senior Electrical Engineer to join their growing team. This role will provide technical leadership, design management, and installation support across complex infrastructure and rail projects. While projects are regionally focused in Gwynedd/Snowdonia and wider UK infrastructure schemes, the successful candidate may be based in London, with a requirement to attend the Central London office three days per week. This is an excellent opportunity for a senior-level engineer who enjoys taking ownership across the full project lifecycle - from concept design through installation and project completion. Key Responsibilities Project Lifecycle Delivery Lead electrical engineering activities from concept and detailed design through to installation, commissioning, and handover. Oversee electrical installations, ensuring...

We are seeking an experienced Senior Commissioning Engineer with Mechanical experience to support a major defence project at a secure, highly regulated site near Reading. This is a senior role, supporting the management team; site-based role requiring a high level of technical expertise, leadership, and experience in commissioning, testing, and assurance of mechanical systems and equipment within safety-critical environments. Role: SeniorCommissioning Engineer - Mechanical Bias Location: Reading (site-based) Salary: Up to £60 Per Hour Inside IR35 (Based on year's experience) Key Responsibilities ·Lead and oversee the commissioning, testing, and validation of mechanical equipment on a complex defence project and provide technical leadership and mentorship to junior commissioning engineers and site teams. ·Develop, review, and approve commissioning strategies, test procedures, and method statements, alongside supervising functional testing, fault finding, and troubleshooting of...

Job Title: C&I Lead Principal Engineer Location: Glasgow  Overview: C&I Lead Principal Engineer based in Glasgow on a 12 month contract duration. Responsibilities: •    Work activities will include project work as the functional Lead Engineer on a Project for Gas transmission industry. •    Lead a team of Engineers and Designers both based in the UK and globally to deliver the C&I scope of work on the project. •    Work activities will be executed across FEED and Detailed Design phases of projects. •    Project work will include the development of Control & Instrument Engineering deliverables. Qualifications: Skills / Qualifications: •    Experience in Control & Instrument Engineering Design on Medium / Large capital projects from concept to start-up. •    Extensive experience in Gas industry. •    Previous experience on NGT projects preferable and/or G35 approver experience is preferred. •    Competent in working within the C&I Discipline of a...

ADDISON PROJECT PLC – Senior Project Engineer, Thornton-Cleveleys For over 25 years, Addison Project plc has delivered innovative, sustainable engineering solutions across the chemical, pharmaceutical, energy, and food & beverage sectors. As a family‑owned business with UK‑wide coverage, we combine technical excellence with a collaborative, client‑focused approach. Our fully integrated EPCM capability supported by strong CDM and HSSEQ leadership and accredited management systems ensures projects are delivered safely, efficiently, and to the highest standards from concept through to commissioning and start‑up. If you're passionate about engineering and want to join a dynamic, people‑focused consultancy driving progress and sustainability across the UK’s manufacturing and process industries, Addison Project is the place for you. Role: Senior Project Engineer (Contract outside IR35) Location: Thornton-Cleveleys Contract: 12 months Start Date: Spring 2026 WORKSCOPE Addison...

Principal Mechanical Engineer Shape the Future of Our Cities and Environments Our client is seeking an experienced and dynamic Principal Mechanical Engineer to join their Design & Advanced Technology (D&AT) team. As part of a talented, multi-disciplinary group, you will be at the forefront of delivering innovative and iconic projects within the Water market. This is an opportunity to work on cutting-edge engineering projects that have a global impact, contributing to critical UK infrastructure both domestically and internationally. This role offers you the chance to make a significant impact, playing a key role in transformational programmes while delivering industry-leading solutions throughout the project lifecycle. Location: Hybrid working available (3 days per week office/site-based) Type: Contract Rate: £68 per hour Your Role As a Principal Mechanical Engineer, your responsibilities will include: ·Leading a team of Mechanical engineers in delivering technical...

Principal Mechanical Engineer Shape the Future of Our Cities and Environments Our client is seeking an experienced and dynamic Principal Mechanical Engineer to join their Design & Advanced Technology (D&AT) team. As part of a talented, multi-disciplinary group, you will be at the forefront of delivering innovative and iconic projects within the Water market. This is an opportunity to work on cutting-edge engineering projects that have a global impact, contributing to critical UK infrastructure both domestically and internationally. This role offers you the chance to make a significant impact, playing a key role in transformational programmes while delivering industry-leading solutions throughout the project lifecycle. Location: Hybrid working available (3 days per week office/site-based) Type: Contract Rate: £68 per hour Your Role As a Principal Mechanical Engineer, your responsibilities will include: ·Leading a team of Mechanical engineers in delivering technical...