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Contractor 36
Outside IR35 mechanical design engineer

36 mechanical design engineer jobs found

CL
Jun 13, 2026  
Mechanical Design Engineer
Contract Mechanical Design Engineer – Avionics Integration Modification ProjectA specialist aerospace engineering organisation is seeking an experienced Contract Mechanical Design Engineer to support a live avionics integration and aircraft modification programme on a regional/narrow-body aircraft platform. This role will focus on the mechanical and structural integration of avionics equipment within a regulated aerospace design environment, supporting installation design, drawing production, systems integration, and aircraft modification activities in accordance with UK aviation approval frameworks. Key Responsibilities Design of structural and mechanical provisions for avionics equipment installations. Development of equipment mounting arrangements, trays, brackets, panels and supporting structure. Mechanical integration of avionics and electrical systems into existing aircraft platforms. Coordination with avionics/electrical engineers to ensure installation and interface...
IR35 Status:
Outside IR35

CV-Library Coventry, Warwickshire, West Midlands Contractor
CL
Jun 13, 2026  
Mechanical Design Engineer
Mechanical Design Engineer Water Sector Outside IR35 Contract £500 per day Ltd We are currently recruiting for an experienced Mechanical Design Engineer to support the delivery of major water infrastructure projects within the UK water sector. This is an excellent opportunity to join a long-term AMP framework programme, working on a range of clean water and wastewater projects across the full project lifecycle. The role will involve producing and reviewing mechanical designs, supporting technical delivery, and working closely with multidisciplinary teams to ensure projects are delivered safely, efficiently, and in line with client requirements. The successful candidate will have previous experience delivering mechanical design solutions within the water sector and will be comfortable working across pumping stations, treatment works, pipework, dosing systems, and associated mechanical infrastructure. Experience working with Tier 1 contractors, design consultancies, or MEICA...
IR35 Status:
Outside IR35

CV-Library Manchester, UK Contractor
CL
Jun 12, 2026  
Mechanical Design Engineer
Mechanical Design Engineer & Mechanical Draughtsman  3–6-month contract  Rate: £35.00 - £42.50p/h Middlesborough / Darlington / Hartlepool / Sunderland SolidWorks / PDM I am currently recruiting on behalf of a key client-based Teesside who are globally recognised engineering and manufacturing business operating across several high-profile industries including defence, marine & offshore. Due to a new project win, they are looking for experienced Mechanical Design Engineers & Draughtsman to join their team on an interim basis for an initial 3–6-month contract. For this position, you will be required to conduct the following daily duties: 3D modelling in SolidWorks - designing enclosure modifications, bespoke brackets, manifolds and internal component layouts Supporting, updating and maintaining existing 3D models and engineering drawings Finalising and issuing manufacturing drawings to the required standard Defining and applying appropriate tolerances across all...
IR35 Status:
Outside IR35

CV-Library United Kingdom Contractor
CL
Jun 17, 2026  
Mechanical Engineer
Mechanical Engineer Contract Aldermaston SC / DV Clearance Required Are you a Mechanical Engineer with experience supporting complex engineering projects within highly regulated environments? Do you enjoy producing technical documentation, engineering calculations and supporting projects from concept through to delivery? Would you like to work for a growing SME delivering specialist packages of work directly into AWE? What's in it for you? • ~ £60p/h DOE • Outside IR35 • Long term project work • Opportunity to work with a specialist engineering SME supporting AWE projects • Overtime opportunities available What will you be doing? • Producing mechanical engineering documentation and design deliverables • Supporting concept, scheme and detailed design activities • Carrying out engineering calculations, assessments and technical reports • Supporting project delivery across design, manufacture, installation and testing activities • Attending project meetings and design...
IR35 Status:
Outside IR35

CV-Library Aldermaston, Reading RG7, UK Contractor
CL
Jun 14, 2026  
Mechanical Engineer
Mechanical Engineer - 12 Month Contract Birmingham / Hybrid Working Outside IR35 - £55 per hour Are you a Mechanical Engineer who enjoys working across the full project lifecycle? Do you have experience taking projects from front-end studies through to commissioning? Are you comfortable working in highly regulated industrial environments where safety and compliance are critical? What's in it for you? •£55 per hour • Outside IR35 contract • 12 month contract • Hybrid working - based from Birmingham or home • Long-term, technically challenging industrial project • Opportunity to work across concept, design and commissioning phases What will you be doing? • Supporting mechanical engineering activities across the full project lifecycle • Delivering front-end engineering studies and concept designs • Producing detailed mechanical design documentation • Supporting HAZOPs and other safety reviews • Working closely with multidisciplinary engineering teams •...
IR35 Status:
Outside IR35

CV-Library Birmingham, UK Contractor
CL
Jun 13, 2026  
Mechanical Project Engineer
Mechanical Project Engineer - Water Industry Location: Oxfordshire Contract Type: Freelance / Contract Salary/Rate: £(Apply online only) p/d - Ltd Company or CIS GRS are seeking a skilled Mechanical Project Engineer to work on high-value MEICA water projects across Oxfordshire. You'll join a Tier 1 contractor delivering key infrastructure upgrades for UK water authorities under major capital delivery programmes (e.g. AMP8). Responsibilities: * Manage mechanical installation works across water treatment and pumping station projects * Coordinate designs, site works, fabrication drawings, and subcontractors * Ensure mechanical scopes are delivered on time, to spec, and within budget * Interface with electrical and ICA teams to ensure integrated MEICA delivery * Attend site inspections, FATs, commissioning, and handover activities Requirements: * Mechanical engineering background with experience in water or wastewater...
IR35 Status:
Outside IR35

CV-Library Oxford, Oxfordshire Contractor
CL
Jun 12, 2026  
Senior Electrical Engineer
IMMEDIATE START, OUTSIDE IR35 CONTRACT - Senior Electrical Engineer I’m in search of a contract Senior Electrical Engineer who can deliver the detailed electrical design for a containerised ammonia cracker system, supporting safe, reliable, and standards-compliant operation within a modular container environment. The scope of work includes development of the overall electrical architecture, load calculations, and power distribution design, including single line diagrams, protection philosophy, cable sizing, and equipment specification (switchgear, distribution boards, UPS, and associated systems). The contractor shall design and integrate control systems, including PLC hardware selection, I/O definitions, and communication networks, ensuring full compatibility with process and instrumentation requirements. The work shall address hazardous area requirements associated with hydrogen, including equipment selection (ATEX/IECEx where required), area classification support, intrinsic...
IR35 Status:
Outside IR35

CV-Library Surrey, South East Contractor
CL
Jun 12, 2026  
Principal Mechanical Engineer
Principal Mechanical Engineer Nuclear Manufacturing Company | Near Manchester Up to £58.50 per hour | Outside IR35 4-Day Working Week (4 x 10-hour days) A specialist nuclear manufacturing company near Manchester is seeking a Principal Mechanical Engineer to support the delivery of innovative engineering solutions within a regulated industry environment. You'll play a key role in the design, compliance and delivery of complex mechanical systems, including gloveboxes and similar engineered equipment. Key Responsibilities Lead mechanical engineering design and project delivery activities Support UKCA / CE Marking compliance and technical file generation Ensure engineering solutions meet safety and regulatory standards Coordinate with multidisciplinary teams and project stakeholders Support manufacture, testing, installation and commissioning activities What We're Looking For Strong understanding of UKCA / CE Marking Experience within regulated engineering sectors Glovebox or...
IR35 Status:
Outside IR35

CV-Library Preston, Lancashire Contractor
CL
Jun 11, 2026  
PMS Design Engineer
PMS ELECTRICAL DESIGN ENGINEER - DATA CENTRES Manchester (Hybrid - 2-3 days in office) 6 Month Initial Contract ASAP Start Outside IR35 I'm currently supporting a global data centre design consultancy that is looking to bring on an experienced PMS Electrical Design Engineer to support multiple hyperscale and mission-critical projects across the globe. Key Experience Required: * Power Management Systems (PMS) * Electrical design engineering background * High voltage systems experience * Modbus (RTU & TCP) * IEC61850 & GOOSE Messaging * Vendor agnostic systems knowledge System Exposure: * Schneider Electric * ABB * Siemens Software Experience: * AutoCAD * Revit * ETAP The role will involve supporting projects through RIBA Stages 2-4 while managing client relationships from concept through delivery alongside dedicated electrical, mechanical, PMS, and BMS engineering teams. The client is a rapidly growing specialist consultancy delivering data centre...
IR35 Status:
Outside IR35

CV-Library Manchester, Greater Manchester Contractor
CL
Jun 11, 2026  
Senior Project Engineer
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...
IR35 Status:
Outside IR35

CV-Library Thornton-Cleveleys, Lancashire Contractor
CL
May 16, 2026  
Senior Electrical Design Engineer
An excellent opportunity has arisen for an experienced Electrical Design Engineer to join a well-established building services consultancy in London on an contract basis outside IR35. This hybrid role will involve working as part of a multidisciplinary building services engineering team, supporting the delivery of electrical design solutions across a range of building projects. The successful Electrical Design Engineer will contribute to the development of electrical building services designs, technical documentation and coordinated BIM models. This role is based in the London office with hybrid working available, offering the chance to work on high-quality building services projects alongside experienced engineers and consultants. Key Responsibilities · As an Electrical Design Engineer, your responsibilities will include: · Producing electrical building services designs for a variety of building projects · Developing electrical schematics, layouts and...
IR35 Status:
Outside IR35

CV-Library London, UK Contractor
CL
Jun 17, 2026  
Project Manager
Project Manager (Contract) – Façade Remediation Projects £400–£450 per day (Ltd Company, Outside IR35) Based within an hour of Derby 6 Month Contract The Opportunity We’re partnering with a growing specialist contractor in passive fire protection, delivering complex remediation programmes across high-rise residential and commercial buildings. This role is suited to a senior-level Project Manager who can take ownership not just of delivery—but of strategy, client relationships, and commercial performance. What You’ll Be Doing Leading projects from pre-construction through to completion Acting as the technical authority, shaping solutions and challenging design where needed Managing commercial performance (costs, margins, risk) Building strong relationships with Tier 1 contractors, consultants, and stakeholders Navigating BSR approvals, compliance, and regulatory processes Overseeing multiple projects and guiding delivery teams Driving best practice across planning, QA, and...
IR35 Status:
Outside IR35

CV-Library Derby, UK Contractor
CL
Jun 16, 2026  
Lead Electrical Design Engineer
Lead Electrical Design Engineer 12 month contract £65-£75 per hour Outside IR35 Reading - Hybrid This role sits within a specialist engineering team responsible for developing electrical designs from early feasibility through to construction and handover support. It's a key technical position with ownership of design delivery and coordination across multiple stakeholders. Essential requirements: Experience in electrical engineering design within power, utilities or infrastructure environments Ability to produce and review electrical design documentation and calculations Good understanding of UK electrical standards and utility interface requirements Experience working with project teams, contractors and engineers Comfortable supporting projects through design, construction and delivery stages Desirable: Experience within substations, power distribution or HV environments Background in energy, utilities or large-scale industrial projects Exposure to site support and...
IR35 Status:
Outside IR35

CV-Library Reading, Berkshire Contractor
CL
Jun 14, 2026  
Design Manager
Are you looking for a role where you can shape design delivery, grow team capability, and influence how water industry projects are engineered from concept through to delivery? Have you managed and led multi-disciplinary design teams delivering complex projects within a regulated environment, ensuring quality, safety, and programmed compliance? Do you have strong hands on experience leading the design process on water or similar regulated infrastructure projects, with accountability for design outputs and team performance? The Opportunity This role is available on a contract basis (outside IR35) and they are also recruiting on a permanent basis, offering £60,000–£80,000 per year plus package, with hybrid working options available depending on experience and arrangements. This role has been created in response to continued growth within a multi-disciplinary engineering design environment delivering regulated infrastructure projects. With an expanding workload in the water...
IR35 Status:
Outside IR35

CV-Library Stretford, Manchester, UK Contractor
CL
Jun 14, 2026  
Lead Electrical Engineer
An exciting opportunity has arisen for a Lead Electrical Engineer to take ownership of the electrical scope across multiple major water frameworks. This role will suit an experienced engineer capable of leading technical delivery, managing teams, and ensuring high-quality engineering outputs across all design and delivery stages. You will play a key role in driving engineering excellence, coordinating multi-disciplinary interfaces, and supporting project teams across a range of UK water infrastructure schemes. This is a long term contract, outside ir35.  Key Responsibilities Lead delivery of the electrical engineering scope across multiple projects Manage schedules, MDRs, change control, reporting, and technical coordination Delegate and oversee work packages within the electrical team Support estimating activities including CTR development Provide technical leadership across all deliverables, including: Basis of Design Power systems, earthing, lightning, load & cable...
IR35 Status:
Outside IR35

CV-Library Manchester, UK Contractor
CL
Jun 14, 2026  
QA Automation / SDET Engineer
Senior QA Automation / SDET Engineer (SC + NPPV3 Cleared) Birmingham 6 Month Contract £400-£450/day (Outside IR35) Hands on Senior QA Automation Engineer / SDET (Software Development Engineer in Test) engineer needed with both SC and NPPV3 Security Clearance, plus strong hands-on experience with JUnit, Cucumber, and Selenium WebDriver. 6 Month Rolling Contract based in Birmingham. Start ASAP in May/June 2026. Hybrid Working – 3 days/week remote (WFH) + 2 days/week working from the office in Birmingham with occasional travel to Croydon. A chance to work with a leading global IT transformation business specialising in large-scale Government projects: Key skills, experience + duties to include: Extensive hands-on experience with JUnit, Cucumber, and Selenium WebDriver within complex enterprise environments. Strong understanding of Spring applications, microservices, and distributed architectures. Good understanding in PostgreSQL, including query optimisation, performance...
IR35 Status:
Outside IR35

CV-Library Birmingham, UK Contractor
CL
Jun 14, 2026  
MEICA Engineer
IR35: Outside Our Client has a requirement for a MEICA Project Engineer, who will be required to work on a contract basis in Warrington. Role Purpose: To support the delivery of MEICA works across the full project lifecycle from outline design through to commissioning and handover. The role will ensure safe, high-quality and compliant delivery of MEICA packages while working within multidisciplinary teams across a major water framework. The position involves a mix of office, remote and site-based working, supporting both design and construction phases. Job Role Responsibilities: Promote health, safety and wellbeing across all stages of design and delivery Manage MEICA packages including design, installation and coordination activities Support HAZOP, HAZCON and wider project delivery meetings as required Work with engineering teams to develop construction sequences, programmes and budgets Coordinate with design, pre-construction and delivery teams to resolve technical...
IR35 Status:
Outside IR35

CV-Library Warrington, UK Contractor
CL
Jun 13, 2026  
Senior Product Design Engineer
Role: Senior Product Design Engineer Location: London Contract Type: Contract / Freelance Duration: 6 months + Rate: £315 per day Status: Outside IR35 - Ltd co contract Shape Innovative Products from concept to reality. An exciting opportunity has arisen with a highly respected product innovation consultancy known for delivering cutting-edge solutions across healthcare, consumer, and industrial sectors. Working within a collaborative, multidisciplinary environment, you will play a pivotal role in transforming ideas into commercially successful, production-ready products. This is an ideal opportunity for an experienced Product Design Engineer who thrives on solving complex engineering challenges, balancing creativity with technical rigour, and leading projects from research through to manufacture. The Opportunity: As a Senior Product Design Engineer, you will work on a broad portfolio of technically challenging and highly innovative projects within consumer electronics,...
IR35 Status:
Outside IR35

CV-Library London, UK Contractor
CL
Jun 13, 2026  
Contract RF Engineer
Contract RF Engineer | Outside IR35 Cambridge | 4 days on-site Our client is looking for a Contract RF Engineer to join their team to support the development and validation of next-generation wireless communication systems. This is a hands-on engineering role focused on discrete RF design across both transmit and receive paths, with a particular emphasis on frequency generation and VCO design. You’ll be working as part of a multidisciplinary product development team, contributing across the full lifecycle from circuit design and validation through to integration and debug within a complete end product environment. KEY TECHNICAL EXPERIENCE * Recent experience in discrete RF circuit design and validation * Strong knowledge of frequency generation and VCO design * Experience designing TX and RX circuits within the 400MHz – 900MHz range * Understanding of RF component selection, market availability, and obsolescence management * Experience working on integrated end products...
IR35 Status:
Outside IR35

CV-Library Cambridge, Cambridgeshire Contractor
CL
Jun 13, 2026  
Rail Electrification & Plant (E&P) Engineer
Rail Electrification & Plant (E&P) Engineer - Contract Manchester / North West (Hybrid Working Available) £275 - £300 Per Day - Outside IR35 Contract Role Job Ref: 40152 We are currently looking for a Rail Electrification & Plant (E&P) Engineer to join a growing Rail engineering team delivering a wide range of UK infrastructure and Rail projects. This is an excellent opportunity for an experienced E&P Engineer to secure a long-term contract role working on high-profile Rail schemes across the North West and wider UK network. The role offers flexible hybrid working alongside a strong pipeline of Rail enhancement, upgrade, and infrastructure projects. You will be joining an established multidisciplinary design team delivering Electrical and Power solutions across Rail environments. Projects include: Rail Electrification & Plant (E&P) systems Railway lineside power infrastructure Points Heating systems Signalling Power supplies Level Crossings LV...
IR35 Status:
Outside IR35

CV-Library Manchester, Greater Manchester Contractor
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