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Outside IR35 mechanical project engineer

41 mechanical project engineer jobs found

CL
Dec 13, 2025  
Mechanical Project Engineer
Mechanical Project Engineer (Construction & Package Management) --- South West Scotland --- Highly hazardous COMAH site --- Contract- Outside of IR35 My clients tank farm expansion project is underway! To support this critical phase, they're looking for an experienced Mechanical Project Engineer who can step in and confidently lead construction and package management activities across multiple disciplines, including: • Civil & Structural • Mechanical & Piping • Electrical • Control & Instrumentation • Tank Manufacturers This role will oversee installation and commissioning, with an expected duration of 6–8 months. We're looking for; An EPCm-experienced Mechanical Project Engineer with strong coordination skills, vendor management capability, and a solid understanding of multi-discipline interfaces. Someone with previous experience delivering projects on a highly regulated process manufacturing plant. Candidates with experience from transitioning sites — such as FEP...
IR35 Status:
Outside IR35

CV-Library Ayrshire, UK Contractor
CL
Dec 16, 2025  
Building Service Engineer
Building Services Engineer Stevenage 12-month contract Up to £29.89 per hour (PAYE) / Up to £40 per hour (Umbrella) My client is seeking an experienced and meticulous Building Services and Fabric Clerk of Works to join our dynamic team. This pivotal role involves overseeing and inspecting building services installations (Mechanical, Electrical, and Fabric) on our projects to ensure they meet the highest standards of quality, compliance, and design specifications. You will act as the department's eyes and ears on site, ensuring quality is built into every aspect of the projects under our responsibility. Responsibilities: Site Inspection & Quality Assurance: Conduct regular, thorough site inspections of all building services and building installations (HVAC, plumbing, electrical, fire systems, controls, structure etc.) to ensure compliance with drawings, specifications, statutory regulations (e.g., Building Regulations, Health & Safety), and industry best practices....
IR35 Status:
Outside IR35

CV-Library Stevenage, Hertfordshire Contractor
CL
Dec 16, 2025  
Building Service Engineer
Building Services Engineer Portsmouth 12-month contract Up to £29.89 per hour (PAYE) / Up to £40 per hour (Umbrella) My client is seeking an experienced and meticulous Building Services and Fabric Clerk of Works to join our dynamic team. This pivotal role involves overseeing and inspecting building services installations (Mechanical, Electrical, and Fabric) on our projects to ensure they meet the highest standards of quality, compliance, and design specifications. You will act as the department's eyes and ears on site, ensuring quality is built into every aspect of the projects under our responsibility. Responsibilities: Site Inspection & Quality Assurance: Conduct regular, thorough site inspections of all building services and building installations (HVAC, plumbing, electrical, fire systems, controls, structure etc.) to ensure compliance with drawings, specifications, statutory regulations (e.g., Building Regulations, Health & Safety), and industry best practices....
IR35 Status:
Outside IR35

CV-Library Portsmouth, Hampshire Contractor
CL
Dec 14, 2025  
Contract Senior Mechanical Design Engineer
Senior Mechanical Design Engineer - MEP Surrey Contract (Outside IR35) Hybrid - 1/2 days a week in Office Rate: £44/hr - £46/hr A consultancy we are partnered with is looking for a contract senior mechanical design engineer to work on a contract basis in their Surrey office. Consultancy or contractor background welcome, project is a large-scale residential scheme. Contract length is like to be 6-8 months. Looking to start someone in early January. If you are interested please apply with your CV
IR35 Status:
Outside IR35

CV-Library Farnham, Surrey Contractor
CL
Dec 13, 2025  
Senior / Principal Mechanical Engineer (hybrid)
Senior Mechanical Engineer – Contract – West Wales / Hybrid Location: West Wales / Hybrid This is an excellent opportunity to join a leading engineering business during a period of continued growth as they support the Oil & Gas, Petrochemical and Renewable Energy sectors. This role is deemed to be outside IR35. Our client is based in West Wales and can accommodate a hybrid working pattern. Role & Responsibilities * Participate in relevant meetings such as Design Reviews, Model Reviews and HAZIDs. * Execute all Piping/Mechanical Engineering activities and maintain technical integrity. * Familiarity with piping, static equipment and rotating equipment. * Develop and contribute to mechanical equipment specification / datasheets to allow purchase of range of equipment. * Oversee designers in the development of multi-discipline plant upgrade project. * Supporting the development of Mechanical and Piping layout for a range of energy projects at different...
IR35 Status:
Outside IR35

CV-Library SA72, Burton Ferry, Pembrokeshire Contractor
CL
Dec 12, 2025  
Senior Electrical Design Engineer
Senior Electrical Design Engineer – Data Centre Project – Central London Location:         London Bridge (Hybrid working available) Contract:         6 Months (Immediate Start Preferred) Rate:                £48 per hour (Ltd / Outside IR35 subject to assessment) A leading international building services consultancy is seeking an experienced Senior Electrical Design Engineer to join their specialist data centre design team on a 6-month freelance contract. Based out of modern offices in London Bridge, you will be working on a major hyperscale data centre development across RIBA Stages 3–5. Key Responsibilities Lead electrical design packages including LV distribution, lighting, power, containment and resilience systems Coordination with multidisciplinary teams including mechanical, sustainability and BIM Attend design team meetings and manage client interface Ensure compliance with relevant standards, codes and project specifications Review and sign-off drawings,...
IR35 Status:
Outside IR35

CV-Library City of London, London, UK Contractor
CL
Dec 11, 2025  
Structual Integrity Engineer
Structural Integrity Engineer - Nuclear Programmes Location: Derby Contract Type: Contingent Worker We are expanding our Nuclear team in Derby to support several of the UK's most significant and technically demanding nuclear programmes. We are seeking a talented Structural Integrity Engineer to contribute to projects spanning the UK Submarine programme, life-extension of the existing nuclear generation fleet, and the development and justification of high-integrity structures for new nuclear establishments. This is an exceptional opportunity to tackle some of the most complex engineering challenges in the nuclear sector, working with a respected and growing team of industry specialists. About the Role As a Structural Integrity Engineer, you will take ownership of analyses and assessments from concept through to delivery. Your work will involve conducting advanced structural integrity assessments, supporting safety-critical designs, and collaborating with multidisciplinary...
IR35 Status:
Outside IR35

CV-Library Derby, Derbyshire Contractor
CL
Dec 11, 2025  
Mechanical Design Engineer
Mechanical Engineer - Nuclear Programmes Location: Derby (or as specified) Contract Type: Contingent Worker We are seeking a highly capable Mechanical Engineer to join our expanding Nuclear team. Our engineering group supports a portfolio of critical national programmes, including the UK Submarine programme, the operational nuclear generation fleet, decommissioning activities, and the development of high-integrity structures for new nuclear facilities. Due to continued growth and increasing client demand, we are looking for a motivated professional to contribute to the delivery of technically robust, safety-critical engineering solutions. About the Role As a Mechanical Engineer, you will take responsibility for delivering high-quality mechanical design, substantiation, and technical analysis activities from concept through to completion. You will work collaboratively within multi-disciplinary engineering teams to solve complex technical challenges and ensure outputs meet...
IR35 Status:
Outside IR35

CV-Library Derby, Derbyshire Contractor
CL
Dec 11, 2025  
Mechanical Design Engineer
Our client, a Defence and Aerospace supplier is looking for a Mechanical Design Engineer to join them on a contract basis at their site in Brighton. Due to the nature of the role, applicants must be willing to undergo basic security checks ahead of starting. 4 days per week onsite in Brighton. Rates are open to discussion, OUTSIDE IR35. 3 month initial contract.KEY ACCOUNTABILITIES: Produce design schemes and proposals in response to specifications, under guidance of lead engineers / senior designers. Mechanical Engineering Calculations, Stress Analysis, Fluid Dynamics (FEA and CFD). Understand the requirement presented in Requests for Quotation - RfQ, Specifications, System Requirements Documents. Development of innovative, well engineered conceptual solutions and design proposals, and guide other engineers, designers and daughtspersons to produce detailed CAD design layouts and manufacturing drawings (SolidWorks) Guide and inspire other less experienced engineers. Technical...
IR35 Status:
Outside IR35

CV-Library Brighton, East Sussex Contractor
CL
Dec 10, 2025  
Mechanical Design Engineer
Mechanical Design Engineer South Yorkshire 3-6 month contract / Outside IR35 £37.50p/h - £40.00p/h Medium – Heavy Engineering / Materials Handling / Autodesk Inventor / Vault I am recruiting for a well-established world leader within design in materials handling & fabrication. Due to ongoing projects in the business, they are looking for a Mechanical Design Engineer on an interim basis. Initially there is a commitment of 3 months, but this is very likely to be extended due to project scope for a successful candidate: For the position of Mechanical Design Engineer, you will require to conduct the following daily duties: 3D design and detailing using Autodesk Inventor & Vault Design of process equipment, structural steel work & machined components Work to tight timescales whilst producing high quality work Report into the design team lead & project manager The successful Mechanical Design Engineer will need to have the following attributes: Strong appreciation...
IR35 Status:
Outside IR35

CV-Library South Yorkshire, UK Contractor
CL
Nov 28, 2025  
Senior Project Engineer
Outside of IR35 --- Rate negotiable My client has had an increase in work so requires more project support. You will be covering projects in the Distillery, Pharmaceutical and Chemical industries and my client is ideally looking for someone with similar industry experience, delivering engineering projects. There will be some specifying and procuring mechanical equipment involved along with supporting the engineering team, checking quotes and technical queries as well as project management. Previous experience working as a Senior Project Engineer / Project Manager covering engineering projects and working in a design office / engineering consultancy is essential. If this position is initially of any interest please apply and I will be able to provide further details. *Please note my client is only willing to consider people that have the right to work in the UK and that are already living in the UK
IR35 Status:
Outside IR35

CV-Library Greater Manchester, UK Contractor
CL
Nov 22, 2025  
Quality Control Supervisor
Civil QC Supervisor * 📍 Talacre, North Wales - Shore-based site * ⏰ 12+ months - Project expected to last up to 3 years * 💰 Negotiable Rate / Outside IR35 * 💡 On-site 5.5 days per week Ceto Talent is partnering with a Leading EPC Contractor known for delivering high-value and complex Energy projects for the Offshore industry. We're looking for an experienced industry professional to join as their Civil QC Supervisor on this exciting and UK-first Carbon Capture project within Liverpool Bay. You'll be expected to supervise 4-5 inspectors, whilst ensuring Quality Control Plans are correctly carried on with reference to civil activities and liaise with the end client. ✅What You’ll Be Doing: * As QC Civils Supervisor, you will supervise inspections, ensure Quality Control Plans are followed, and verify required quality records, including subcontracted work. * Oversee preparation of quality dossiers for final handover. * Check availability and suitability of consumables,...
IR35 Status:
Outside IR35

CV-Library CH8 9RD, Talacre, County of Flintshire Contractor
CL
Nov 16, 2025  
Design Engineer
Design Engineer (Defence Sector) OUTSIDE IR35 (LTD) Contract Rates: Negotiable (DOE) 5 Month CONTRACT Full-Time On-Site (5 Days/Week) in Swindon, Wiltshire The Opportunity: Immediate Start Required A leading engineering firm in the defence sector is seeking an experienced Draftsman / Design Engineer for an immediate, high-impact project focused on critical power and distribution systems within a secure facility. This is a crucial role supporting the ESF Facility project, requiring full-time commitment (5 days per week) on-site in Swindon to ensure seamless project delivery and access to sensitive information. Key Requirements & Responsibilities You will be the lead technical contributor for mechanical design elements, working closely with cross-functional engineering teams. Design & Drafting: Produce precise, detailed drawings for complex equipment, including generators and power distribution equipment, utilizing AutoCAD and SOLIDWORKS. Mechanical Design Leadership:...
IR35 Status:
Outside IR35

CV-Library Swindon, UK Contractor
CL
Nov 02, 2025  
Mechanical Handling Engineer (temp)
Mechanical Handling Engineer Plymouth – 3 days WFH circa £57.5 per hour LTD (Outside IR35) Virtual interview Mon–Fri   Certain Advantage is partnering with a key client to recruit a Mechanical Handling Engineer. You’ll support mechanical handling and building services projects across nuclear and non-nuclear facilities, ensuring safe, compliant, and efficient operation of cranes, lifting equipment, and maintenance assets.   What will you be doing? Support the Mechanical Engineering Lead with design, maintenance, and modification of mechanical handling systems. Scope and deliver mechanical designs and upgrades across the full project lifecycle. Maintain technical documentation, drawings, and compliance records. Collaborate across disciplines during installation, commissioning, and testing phases. Provide technical input to risk assessments and progress reports.  A couple of things you should know: Degree-qualified in Mechanical Engineering (Master’s or CEng preferred). 3+...
IR35 Status:
Outside IR35

CV-Library Crewton, Derby DE24, UK Contractor
CL
Oct 25, 2025  
Technical Writer
Technical Writer / Technical Publications Engineer Outside IR35 Certain Advantage are hiring for a Technical Publications Engineer to join one of the world’s fastest-growing engineering services firms based in Huddersfield  This role is on a 12-month contract basis and is hybrid.   The role As a Technical Publications Engineer, you will take ownership of producing high-quality technical documentation that supports global OEMs across a range of industries. You will: Author and update installation manuals, maintenance procedures, service manuals, and engineering change documentation. Develop assembly and disassembly instructions and other client-facing technical documents. Interpret mechanical drawings, CAD models, and BOMs to create accurate and user-centric documentation. Collaborate closely with design engineers, manufacturing, and product teams to understand functionality and ensure technical accuracy. Create 2D/3D illustrations using Solid Edge or equivalent tools. Work...
IR35 Status:
Outside IR35

CV-Library Huddersfield, UK Contractor
CL
Oct 02, 2025  
Design Engineer -NPI
Design Engineer CIRCA £50 Per Hour LTD Derbyshire Contract – Outside of IR35, Certain Advantage are working on behalf of a global supplier of precision-machined components and sub-assemblies. Due to continued growth, an opportunity has arisen for a Gas turbine Design Engineer (NPI) on a contract basis and can be worked through your own LTD Company. The role is located in the Derbyshire area Seeking an experienced problem solver to conduct analyses and contribute to innovating in New Product Introduction (NPI) programmes. Experience in Design and development of: Compressor/Fan Structural and rotating parts. Rotating Shaft, Shaft cone, Bearing support and Bearing design Development rig design, analysis and integration. Material selection 3D part modelling and drafting. Interface control definition Stack up/Layout creation. In depth knowledge of GD&T, manufacturing methods. Part tolerancing with Design for manufacturing applications Performing design calculations...
IR35 Status:
Outside IR35

CV-Library Derbyshire, UK Contractor
CL
Dec 14, 2025  
Sub Agent
A leading civil engineering contractor is seeking an experienced Sub Agent to support the delivery of a major heavy civils project in the Woking area. The role involves managing site teams, overseeing quality and safety, coordinating subcontractors, and ensuring works are delivered to programme. This position is outside IR35, offering a competitive day rate and long-term continuity on a high-profile project. Key Responsibilities * Support the Site Agent and Project Manager in the delivery of heavy civils works across the project. * Manage site engineering teams and supervise subcontractors. * Lead on quality assurance processes, ITPs, WPPs, permits and compliance documentation. * Ensure construction activities are delivered in line with programme and specifications. * Oversee daily site operations, progress reporting and short-term planning. * Contribute to risk assessments, method statements, and safe systems of work. * Coordinate...
IR35 Status:
Outside IR35

CV-Library Woking, Surrey Contractor
CL
Dec 14, 2025  
Setting Out Engineer/site engineer
We are recruiting Setting-Out / Site Engineers for a major train station upgrade project in St Albans. This is a long-term opportunity offering a full year of consistent work on a high-profile rail infrastructure scheme. Role Responsibilities: * Setting-out for civils and structural works across station platforms and surrounding infrastructure * Working closely with the site management team and subcontractors * Ensuring works are delivered accurately, safely, and to programme * Daily reporting, quality checks, and maintaining site records * Supporting the team with technical queries and problem solving Requirements: * Proven experience as a Setting-Out Engineer or Site Engineer (rail/civils experience desirable) * Strong knowledge of setting-out equipment and site documentation * Valid CSCS card * Ability to start ASAP * Excellent communication and teamwork skills What’s On Offer: *...
IR35 Status:
Outside IR35

CV-Library St Albans, Hertfordshire Contractor
CL
Dec 14, 2025  
Structural Engineer
Our client has an ongoing commitment to the delivery of operational brilliance and would like a skilled Structural Engineer to continue their mission. This leading engineering, architecture, construction, and environmental consultancy are offering a contract role, outside IR35, with the opportunity to work from their London office, on a hybrid basis. Don't miss this incredible opportunity to work on a variety of Data Centre, Industrial, Corporate, and Manufacturing Facilities projects. -Competitive hourly rate (depending on experience). -Hybrid working arrangement (two days on site). Responsibilities: -Oversee detailed structural design production and development, from concept through to completion, ensuring alignment with UK industry standards, and key regulations. -Create, develop, and review drawings, structural elements and components, and sketches for a range of multidisciplinary projects. -Liaise with CAD technicians and professionals, ensuring the production and...
IR35 Status:
Outside IR35

CV-Library City of London, London Contractor
CL
Dec 14, 2025  
Principal Telecoms Engineer
New Job Opportunity - Principal Telecoms Engineer - Initial 12 Month Outside IR35 Contract Our Client has a requirement for a Principal Telecom Engineer, who will be required to work on a contract basis in Woking. Location: Central London, SW1V 1PX Contract Length: Initially 12 Months IR35 Status: Outside IR35 Requirements: 5 days per week in office (from early on Fridays) Deliverables: Review / provide guidance for preparation of all discipline engineering and design deliverables such as Design Basis, specifications, datasheets, BOM, Equipment location Plan, JB and Cable schedule, 3D model, Block and Schematics drawings etc Complete or review calculations for: CCTV, PAGA, Radio, Telephone lines etc. Provide guidance/work on field equipment’s (Cameras, Speaker, Call station, Tower, Turnstile, Road Barrier, Hotline and Analogue Telephone) etc. Prepare / provide guidance for preparation of Telecom Network Architecture (Overall Block Diagram, Interfaces etc) design, procurement...
IR35 Status:
Outside IR35

CV-Library Woking, UK Contractor
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