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Inside IR35 mechanic

49 mechanic jobs found

CL
Jun 19, 2026  
Mechanical Fitter - BESS Project
Mechanical Fitter - HV Fitting & Earthing Location: Monk Fryston, North Yorkshire Project: SSER BESS Site Start Date: 8th June 2026 Duration: Until 28th August 2026 Hours: 45 Hours per Week (07:00 - 17:00) Rate: £350 per Day IR35 Status: Inside IR35 Payment Method: Umbrella / CIS Positions Available: 4 We are currently recruiting for 4 experienced Mechanical Fitters to support HV fitting and earthing activities on a major Battery Energy Storage System (BESS) project at Monk Fryston. This is an excellent opportunity to join a high-profile energy infrastructure project, working within an experienced site team delivering critical electrical and mechanical installation works. Responsibilities: Carrying out HV fitting and earthing installation works Installation and assembly of mechanical components and equipment Supporting the construction and installation of BESS infrastructure Reading and interpreting engineering drawings and specifications Ensuring all works are completed...
IR35 Status:
Inside IR35

CV-Library Castleford, West Yorkshire Contractor
CL
Jun 18, 2026  
Lead Mechanical Engineer
This is an opportunity for a Lead Mechanical Engineer to join a Joint Venture Project Management Team during the pre-FEED of a $ multibillion project. Acting on behalf of the JV, the role provides technical input to ensure the facilities scope is specified safely, operably, and cost-effectively. The Lead Mechanical Engineer collaborates across disciplines and communicates key concepts to both project management and the contractor, with a pre-FEED focus on capital cost optimisation, risk management, and efficient execution. Candidates must have demonstrable experience, in a lead capacity, of static equipment across pressure vessels, columns, towers, reactors and internals, including high-alloy, high-pressure / heavy-wall equipment, heat exchangers, large-bore / high-alloy process & utility piping, storage tanks / vessels and cryogenic cold boxes, with working awareness of equipment used in downstream refining / chemicals e.g. hydro-processing, sour gas treatment, ethylene...
IR35 Status:
Inside IR35

CV-Library Reading, Berkshire Contractor
CL
Jun 18, 2026  
Senior Mechanical Design Engineer
Senior Mechanical Design Engineer Role - Senior Mechanical Design Engineer Contract - 12 months Rate - £55 per hour inside IR35 Location - Derby 5x per week Are you a Senior Mechanical Design Engineer looking to work on some of the UK's most technically challenging and high-impact engineering programmes? This is an opportunity to join a world-class engineering environment delivering cutting-edge projects across the nuclear and defence sectors. You'll become part of a highly skilled team working on complex systems where innovation, precision, and engineering excellence are at the heart of everything. This role offers the chance to work on technically demanding programmes while mentoring junior engineers and driving innovation across design processes and methodologies. Role Responsibilities Producing high-quality mechanical designs to customer specifications Creating detailed 3D CAD models and manufacturing drawings Supporting product development and design improvement...
IR35 Status:
Inside IR35

CV-Library Derbyshire, UK Contractor
CL
Jun 17, 2026  
Quality Engineer QA/QC - Mechanical and Piping
Mechanical QA/QC Engineer Contract Role / Inside of IR35 / North Ayrshire / Major Industrial Project We are supporting a major live industrial project in Dalry and are seeking an experienced Mechanical QA/QC Engineer to join a central Quality team on a contract basis. Working within a complex, fast-paced construction environment, you’ll be embedded on-site alongside delivery and construction teams, playing a key role in ensuring quality standards are achieved across all phases of mechanical and piping installation. This is a highly visible, hands-on position offering genuine responsibility, stakeholder influence, and the opportunity to make a measurable impact on project delivery outcomes. The Role You’ll be at the centre of project execution, ensuring mechanical and piping systems are installed, tested, and commissioned to the highest standards. Key responsibilities include: * Leading QA/QC activities across fabrication, installation, testing, and pre-commissioning *...
IR35 Status:
Inside IR35

CV-Library Ayrshire, UK Contractor
CL
Jun 14, 2026  
Mechanical Piping Field Supervisor
OLG Recruitment are currently looking for a Mechanical Piping Field Supervisor to work for a client based in Immingham, this is a contract role for an initial period of 8 months. After this time, we will reassess the role and the requirement. This will be full time hours, Monday to Friday, determined inside IR35. Basic Function Accountable in the field for providing discipline leadership, ensuring correct installation and commissioning of relevant equipment to agreed programs. Responsibilities: * Responsible for contractor safety out on site. * Complete weekly level 1 safety audits and Behavioural Based Safety observations. * Provide a first point of contact for safety issues for the contractor and try to resolve them working with the safety team. * Review and approve permit documentation submitted by the contractors. * Ensure contractor supplies day work sheets and contract variations in a timely manner. * Review and challenge where necessary to ensure...
IR35 Status:
Inside IR35

CV-Library DN40, Habrough, North East Lincolnshire Contractor
CL
Jun 14, 2026  
Mechanical Site Supervisor
Role: Mechanical Supervisor Location: East Midlands Reason for vacancy: AMP 8 work IR35: Inside Start date: ASAP Length: 12 months initial No of vacancies: 1 Skills: Mechanical supervisor experience Tier 1 contractor experience STW experience SSSTS/SMSTS CSCS card First aid at work Manual handling / confined spaces / lifting operations
IR35 Status:
Inside IR35

CV-Library United Kingdom Contractor
CL
Jun 14, 2026  
Mechanical Fitter
Mechanical Fitter / Tram Maintainer - Rolling Stock (Contract Role) Location: Nottingham Tram Depot, Wilkinson Street, Nottingham Duration: Ongoing Contract Start Date: ASAP Shift Pattern: Days Only - 4 on 4 off - 07:00 / 19:00 About the Opportunity: Rullion is working with a prestigious Rolling Stock and Light Rail client to recruit Mechanical Fitters on a contract position at their Nottingham Tram Depot. This is a fantastic opportunity for skilled professionals with an NVQ Level 3 (or equivalent) in Mechanical Engineering to contribute to the reliability and maintenance of a modern light rail fleet. Pay Rates (Inside IR35): PAYE: £20.61/hour + accrued holiday Umbrella: £26.27/hour (first 12 weeks) £27.56/hour (after 12 weeks) Role Overview: As a member of the depot's autonomous maintenance team, you will provide mechanical expertise to support our client's maintenance and service commitments for their tram fleet. Key Responsibilities: Carry out servicing,...
IR35 Status:
Inside IR35

CV-Library Nottingham, Nottinghamshire Contractor
CL
Jun 13, 2026  
Lead Mechanical Engineer
Lead Mechanical Engineer Location: Reading, UK (Onsite) Contract: 12 Months (Inside IR35) Hours: 40 hours per week (Core hours: 09:00 - 15:30) Working Pattern: 4 days onsite, 1 day WFH About the Role We are seeking an experienced Lead Mechanical Engineer to join a Joint Venture (JV) Project Management Team during the pre-FEED stage of a major project, based in Reading. Key Responsibilities Lead Mechanical Engineer will provide engineering leadership aligned with project objectives and risk strategies Work closely with PMT and contractors to ensure risks are clearly understood and managed Drive value improvement and capital efficiency initiatives within design development Recommend and evaluate design alternatives to optimise cost and schedule Own and develop engineering standards, specifications, and philosophies Ensure technical definitions meet pre-FEED / FEED maturity expectations Support preparation of FEED/EPC scopes and participate in technical bid evaluations Lead...
IR35 Status:
Inside IR35

CV-Library Reading, Berkshire Contractor
CL
Jun 13, 2026  
Principal Mechanical Engineer
Principal Mechanical Engineer - HVAC & Building Physics (Remote) Fully Remote £60/hr Inside IR35 12-Month Minimum Contract We're seeking an experienced Principal Mechanical Engineer to support a major defence infrastructure programme delivering critical M&E systems across Building C and Southern Services within the 10 Dock development. This is a fully remote, long-term contract opportunity focused on HVAC design, substantiation, and multidisciplinary coordination within a highly regulated environment. The Role You'll lead mechanical design activities across concept, scheme, and detailed design stages, with particular responsibility for HVAC systems supporting substation infrastructure and occupied operational spaces. Key responsibilities include: Delivery of RIBA Stage 3 and Stage 4 mechanical design HVAC and controls design for critical environments Design and substantiation of central and local ventilation systems Chilled water system design supporting electrical...
IR35 Status:
Inside IR35

CV-Library Warrington, Cheshire Contractor
CL
Jun 13, 2026  
Mechanical Design Draughtsman
Inside IR35 An opportunity to become a member of Europe’s No. 1 Missile Systems company as a design draughtsperson in the mechanical engineering function, you will work closely with a wide range of project teams to develop definitions to meet our manufacturers and customer’s needs. Responsibilities: Must have a strong background in the ability to create 2D and 3D definitions. In this role, you will develop the 2D and 3D definitions working with the engineer, quality assessing the 3D models you receive for a variety of defence products. Appointments will be made at an appropriate level based on skills and experience. Please bring examples of 2D draughting work to show in the interview Skillset/experience required: • Ideally Degree, HND, or HNC in Mechanical Engineering (or equivalent) with relevant industry experience. • Excellent knowledge of BS8888 Technical product documentation and specification, ISO 1101 Geometrical product specifications, ISO 5459 Datum and...
IR35 Status:
Inside IR35

CV-Library Stevenage, UK Contractor
CL
Jun 12, 2026  
Mechanical Design Draughtsperson
World Class Defence Organisation is currently looking to recruit a Mechanical Design Draughtsperson subcontractor on an initial 6 month contract. Rate: £45.00 per hour Location: Stevenage Hybrid / Remote working: 2 days a week likely onsite.  The rest working from home Contract: 37 Hours per week Overtime: Hours worked over 37 hours per week will be calculated at ‘time and a quarter’ Duration: 6 Months (initially and then ongoing and long-term thereafter) IR35 status: Inside IR35 (Umbrella)  Mechanical Design Draughtsperson Job Description: An opportunity to become a member of Europe’s No. 1 Missile Systems company as a design draughtsperson in the mechanical engineering function, you will work closely with a wide range of project teams to develop definitions to meet our manufacturers and customer’s needs. Responsibilities: Must have a strong background in the ability to create 2D and 3D definitions. In this role, you will develop the 2D and 3D definitions working with the...
IR35 Status:
Inside IR35

CV-Library Stevenage, UK Contractor
CL
Jun 07, 2026  
Mechanical Systems Engineer / Architect
World Class Defence Organisation is currently looking to recruit a number of Mechanical Systems Engineer / Architects on an initial 6 month contract.  The department can have the role based from either the Stevenage, Bristol or Bolton sites.   This role would suit a candidate who comes from a strong background of working as a Mechanical Design Engineer, Mechanical Systems Engineer, Mechanical Architect or has experience of Mechanical Systems Architecture.  A defence / aerospace background is ideal but not essential. DOORS experience would be great.    Rate: £60.00 per hour Overtime Rate: Hours worked over the standard 37 hours per week, will be paid at ‘time and a quarter’ Location: Stevenage, Bolton or Bristol depending on your preference Hybrid / Remote working: 3-4 days onsite needed. Will be 5 days onsite to begin with due to training needs Duration: 6 Months with very likely extension. Contracts are often ongoing and long-term thereafter.  IR35 status: Inside IR35 (Umbrella)...
IR35 Status:
Inside IR35

CV-Library Stevenage, UK Contractor
CL
Jun 07, 2026  
Mechanical Systems Engineer / Architect
World Class Defence Organisation is currently looking to recruit a number of Mechanical Systems Engineer / Architects on an initial 6 month contract.  The department can have the role based from either the Stevenage, Bristol or Bolton sites.   This role would suit a candidate who comes from a strong background of working as a Mechanical Design Engineer, Mechanical Systems Engineer, Mechanical Architect or has experience of Mechanical Systems Architecture.  A defence / aerospace background is ideal but not essential. DOORS experience would be great.    Rate: £60.00 per hour Overtime Rate: Hours worked over the standard 37 hours per week, will be paid at ‘time and a quarter’ Location: Stevenage, Bolton or Bristol depending on your preference Hybrid / Remote working: 3-4 days onsite needed. Will be 5 days onsite to begin with due to training needs Duration: 6 Months with very likely extension. Contracts are often ongoing and long-term thereafter.  IR35 status: Inside IR35 (Umbrella)...
IR35 Status:
Inside IR35

CV-Library Bolton, UK Contractor
CL
Jun 07, 2026  
Mechanical Systems Engineer / Architect
World Class Defence Organisation is currently looking to recruit a number of Mechanical Systems Engineer / Architects on an initial 6 month contract.  The department can have the role based from either the Stevenage, Bristol or Bolton sites.   This role would suit a candidate who comes from a strong background of working as a Mechanical Design Engineer, Mechanical Systems Engineer, Mechanical Architect or has experience of Mechanical Systems Architecture.  A defence / aerospace background is ideal but not essential. DOORS experience would be great.    Rate: £60.00 per hour Overtime Rate: Hours worked over the standard 37 hours per week, will be paid at ‘time and a quarter’ Location: Stevenage, Bolton or Bristol depending on your preference Hybrid / Remote working: 3-4 days onsite needed. Will be 5 days onsite to begin with due to training needs Duration: 6 Months with very likely extension. Contracts are often ongoing and long-term thereafter.  IR35 status: Inside IR35 (Umbrella)...
IR35 Status:
Inside IR35

CV-Library Bristol, UK Contractor
CL
May 23, 2026  
Mechanical Design Engineer
World Class Defence Organisation is currently looking to recruit a Mechanical Design Engineer subcontractors on an initial 6 month contract. This role would suit a Mechanical Design Engineer who comes from a strong Defence or Aerospace background has strong Creo / PRO-E skills.         Job Title:  Mechanical Design Engineer Rate: £50.00 per hour Location: Stevenage or Bristol – depending on your preference Hybrid / Remote working: 4 days a week likely onsite (likely could be lower on a week by week basis; depending on work). 1 day remote. (flexible on start and finish time). A compressed 4 day week (Monday to Thursday) a possibility. Contract: 37 Hours per week Overtime: Hours worked over 37 hours per week will be calculated at ‘time and a quarter’ Duration: 6 Months (initially and then ongoing and long-term thereafter) IR35 status: Inside IR35 (Umbrella) Mechanical Design Engineer Job Description: An opportunity to become part of Europe’s No. 1 Missile Systems Designer, as a...
IR35 Status:
Inside IR35

CV-Library Stevenage, UK Contractor
CL
May 23, 2026  
Mechanical Design Engineer
World Class Defence Organisation is currently looking to recruit a Mechanical Design Engineer subcontractors on an initial 6 month contract. This role would suit a Mechanical Design Engineer who comes from a strong Defence or Aerospace background has strong Creo / PRO-E skills.         Job Title:  Mechanical Design Engineer Rate: £50.00 per hour Location: Stevenage or Bristol – depending on your preference Hybrid / Remote working: 4 days a week likely onsite (likely could be lower on a week by week basis; depending on work). 1 day remote. (flexible on start and finish time). A compressed 4 day week (Monday to Thursday) a possibility. Contract: 37 Hours per week Overtime: Hours worked over 37 hours per week will be calculated at ‘time and a quarter’ Duration: 6 Months (initially and then ongoing and long-term thereafter) IR35 status: Inside IR35 (Umbrella) Mechanical Design Engineer Job Description: An opportunity to become part of Europe’s No. 1 Missile Systems Designer, as a...
IR35 Status:
Inside IR35

CV-Library Bristol, UK Contractor
CL
May 14, 2026  
Commissioning Engineer Mechanical
Commissioning Engineer (Mechanically Biased) Warrington Contract until Jan 2027 Inside IR35   Responsibilities The Commissioning Engineer reporting to the Commissioning Team Leader, carries out a role to undertake delivery of assigned commissioning tasks in a safe and effective manner, in line with commissioning process requirements. This role is specific to candidates with experience in nuclear in-cell handler testing.    The Commissioning Engineer is responsible for: Delivering the commissioning work scope to an agreed strategy and plan in a timely and cost effective manner Execution of the arrangements for controlling, witnessing, recording and assessing the results of commissioning tests which may affect safety. Ensuring a proactive and balanced approach to safety (nuclear, radiological, conventional and environmental) to ensure that safety is optimised during commissioning Reviewing commissioning progress and performance and taking appropriate corrective actions where...
IR35 Status:
Inside IR35

CV-Library Cheshire, UK Contractor
CL
Apr 02, 2026  
Mechanical Design Engineer
World Class Defence Organisation is currently looking to recruit a Mechanical Design Engineer (Military Packaging Design) subcontractors on an initial 12 month contract. This role would suit a Mechanical Design Engineer who comes from a strong Defence or Aerospace background has strong Creo / PRO-E skills.  Other CAD Package skills are also fine.         Job Title:  Mechanical Design Engineer Rate: £50.00 per hour Location: Stevenage Hybrid / Remote working: Hybrid, 2-3 days min on site. Although this can change due to workload. Can be continually reviewed. Contract: 37 Hours per week Overtime: Hours worked over 37 hours per week will be calculated at ‘time and a quarter’ Duration: 12 Months (initially and then ongoing and long-term thereafter) IR35 status: Inside IR35 (Umbrella) Mechanical Design Engineer - Job Description: An opportunity to become part of Europe’s No. 1 Missile Systems Designer, as a Mechanical Design Engineer. You will work closely with other functional...
IR35 Status:
Inside IR35

CV-Library Stevenage, UK Contractor
CL
Jun 19, 2026  
Building & Construction Project Manager
We are recruiting for a Building & Construction Project Manager for a leading Aerospace organisation based on site in Belfast. Role Overview The Building & Construction Project Manager will play a key role in delivering major site‑based construction initiatives. This role is ideal for someone who brings strong client‑side construction project management experience, thrives in a fast‑paced setting, and enjoys leading projects from initial concept through to successful handover. Responsibilities As a Construction Project Manager, you will take full ownership of end‑to‑end project delivery. Your responsibilities will include: * Leading client‑side construction projects from feasibility and design through to completion and handover. * Providing clear leadership and direction to ensure all stakeholders/multi-functional project teams (internal and external) are aligned and informed throughout the project lifecycle. * Develop and maintain project delivery plans,...
IR35 Status:
Inside IR35

CV-Library Belfast, City of Belfast Contractor
CL
Jun 19, 2026  
Test Engineer
We are working with a leading manufacturer in Leighton Buzzard who are looking for a Test Engineer on a 6-to-12-month contract basis. The role will plan, organise and execute development and qualification testing activities and produce high-quality technical documentation in support of product and system verification and validation programs. The successful candidate will be well versed working in a testing focused role with an electrical bias.   Test Engineer 6 – 12 month contract – Inside IR35 Day rate dependent on experience Leighton Buzzard   Test Engineer Job Description Plan, coordinate, and deliver development and qualification testing activities Prepare and execute test campaigns, including test setups and instrumentation Produce accurate and compliant technical documentation (Test Plans, Procedures, Reports) Contribute to the development, improvement and safe operation of test facilities, rigs and processes  Test Engineer Essential Skills/Experience/Qualifications 5...
IR35 Status:
Inside IR35

CV-Library Leighton Buzzard LU7, UK Contractor
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