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Engineering 7 Information Technology 4
Inside IR35 Contractor principal mechanical engineer

9 principal mechanical engineer jobs found

CL
Apr 25, 2026  
Principal Engineer Mechanical
Role: Principal Mechanical Engineer Location: Devonport(2 days in a month onsite) Duration: 12 months Inside IR35 Umbrella About our client: Our client in Devonport is a leading engineering and maritime organisation specialising in the maintenance, repair, and overhaul of naval vessels. The site operates with a skilled workforce across mechanical, electrical, and technical disciplines, delivering high-quality and complex engineering projects. It offers a structured and collaborative working environment with opportunities for hands-on experience and professional development. The purpose of the Principal Engineer - Mechanical post is: To manage the delivery of mechanical engineering work packages to the required scope, quality, schedule and cost. Day-to-day, you'll be supporting the engineering capability of the new systems through the design lifecycle in accordance with the design process: Applying systems engineering approach to develop and validate design requirements...
IR35 Status:
Inside IR35

CV-Library Plymouth, Devon Contractor
CL
Apr 26, 2026  
Senior HVAC Mechanical Engineer
12 Month Contract Rate open to negotiation up to £80 per hour umbrella (Inside IR35) Hybrid Working – 1 – 2 days per week on site (ideally) – can offer more remote working with ad hoc visits where required Job Role: The Senior HVAC Engineer will lead the design, integration, and technical assurance of numerous HVAC systems across a complex marine platform. They will apply deep expertise in system performance, capacity assessment, and optimisation to deliver robust, compliant, and customer focused solutions throughout the shipbuilding lifecycle. The role ensures high engineering standards by driving improvements to processes, supporting technical investigations, and providing evidence-based decision making. Strong HVAC and marine/building services systems experience is essential to ensuring system reliability and capability across the platform. Key Responsibilities: Preparing specifications and developing HVAC system designs in accordance with project requirements, technical...
IR35 Status:
Inside IR35

CV-Library Glasgow, UK Contractor
CL
Apr 26, 2026  
Principal Quality Assurance Engineer - Stevenage
MERITUS are recruiting for a Principal Quality Assurance Engineer to support with Supply Chain engineering programmes in the defence sphere from our client's site in Stevenage. Please note, there will be regular supplier visits to international sites and you must have awareness of AS9100 and ISO 9001. PRINCIPAL QUALITY ASSURANCE ENGINEER - INSIDE IR35 - £45 PER HOUR (£333 PER DAY) - 6 MONTHS - 2 STAGE INTERVIEW PROCESS - STEVENAGE (+INTERNATIONAL TRAVEL) Complete scheduled Quality Assurance audits at suppliers using standardised tools Conduct thorough verification / inspection of products to ensure they meet the required quality standards Identify and document any non-conformities in the manufacturing process and deviations from the product specifications Maintain accurate and organized records of all quality control activities Communicate findings to relevant departments / stakeholders and work cross functionally to implement root cause corrective actions at supplier Contribute...
IR35 Status:
Inside IR35

CV-Library Stevenage, Hertfordshire Contractor
CL
Apr 26, 2026  
Principal Quality Assurance Engineer - Bolton
MERITUS are recruiting for a Principal Quality Assurance Engineer to support with Supply Chain engineering programmes in the defence sphere from our client's site in Bolton. Please note, there will be regular supplier visits to international sites and you must have awareness of AS9100 and ISO 9001. PRINCIPAL QUALITY ASSURANCE ENGINEER - INSIDE IR35 - £45 PER HOUR (£333 PER DAY) - 6 MONTHS - 2 STAGE INTERVIEW PROCESS - Bolton (+INTERNATIONAL TRAVEL) Complete scheduled Quality Assurance audits at suppliers using standardised tools Conduct thorough verification / inspection of products to ensure they meet the required quality standards Identify and document any non-conformities in the manufacturing process and deviations from the product specifications Maintain accurate and organized records of all quality control activities Communicate findings to relevant departments / stakeholders and work cross functionally to implement root cause corrective actions at supplier Contribute to...
IR35 Status:
Inside IR35

CV-Library Bolton, Greater Manchester Contractor
CL
Apr 25, 2026  
Principal Quality Assurance Engineer
Location: Bolton OR Stevenage (2 days per week onsite + supplier travel) Duration: 6 month initial contract Inside IR35 Role details: Our client, a prominent defence organisation, is strengthening its Quality Division and has opportunities for Quality Assurance Engineers to join their Supply Chain team on a contract basis. This role will be based in either Stevenage or Bolton, with the flexibility of hybrid working and travel to UK supplier sites. Responsibilities: The primary responsibility will be to plan and conduct supplier quality audits / surveillance activities to drive future process control. In addition, where applicable carry out inspection / verification activities to support the delivery of conforming production hardware. While ensuring adherence to our customer and supplier requirements. Complete scheduled Quality Assurance audits at suppliers using standardised tools. Conduct thorough verification and inspection of products to ensure they meet the required...
IR35 Status:
Inside IR35

CV-Library Bolton, Greater Manchester Contractor
CL
Apr 25, 2026  
Supplier Quality Engineer/Auditor
Our client has an opportunity for a Principal Quality Assurance Engineer - Supply Chain to join them on a contract basis. This opportunity provides the chance to work within a dynamic quality team. The primary responsibility will be to plan and conduct supplier quality audits / surveillance activities to drive future process control. In addition, where applicable carry out inspection / verification activities to support the delivery of conforming production hardware. While ensuring adherence to our customer and supplier requirements. Role: Principal Quality Assurance Engineer Location: Stevenage or Bolton, 2 days WFH the rest onsite/visiting suppliers Contract: 6 months rolling Clearance: Full SC required to start - UK Eyes Only due to project Hourly Rate: £40-£45 per hour via Umbrella, inside IR35 What you'll be doing: Complete scheduled Quality Assurance audits at suppliers using standardised tools Conduct thorough verification / inspection of products to ensure they meet...
IR35 Status:
Inside IR35

CV-Library Stevenage, Hertfordshire Contractor
CL
Mar 04, 2026  
Principal Structural Engineer
World Class Defence Organisation based in Stevenage, Hertfordshire is currently looking to recruit a Principal Structural Engineer subcontractor on an initial 12 month contract, with very likely extension.  The role will be onsite 4 days per week.     Candidates with a FE / FEA background ( Structural Engineer / Structural Analysis / Stress Engineer ) ideally from the Defence / Aerospace industry would be suitable for this position. Rate: £50.00 per hour Overtime Rate: Hours worked over the standard 37 hours per week, will be paid at ‘time and a quarter’ Location: Stevenage Hybrid / Remote working: The role will be onsite 4 days per week.  a 4-Day week of Monday to Thursday is possible. Duration: 12 Months with very likely extension. Contracts are often ongoing and long-term thereafter.  IR35 status: Inside IR35 (Umbrella) Interview process: One stage video interview   Principal Structural Engineer Job Description: The Mechanical Analysis Group are looking for a Principal...
IR35 Status:
Inside IR35

CV-Library Stevenage, UK Contractor
CL
Apr 26, 2026  
Data Analyst - Sc cleared
Data Analyst +Hybrid working in Reading +SC cleared role +Inside IR35 +£83 ph Skills: +Data Analyst +MOD experience +SC cleared - Sole British nationals only due to nature of the project Are you an experienced SC cleared Data Analyst ready to lead impactful, data-driven innovation? We're looking for a Principal Data Analyst to drive the design and delivery of advanced analytics solutions that inform strategic decisions and unlock business value. In this role, you'll be at the forefront of our data journey - leading technical initiatives, mentoring colleagues, and influencing how the organisation harnesses data. What You'll Do Lead the design and delivery of complex analytics and insight solutions across multiple projects Oversee dashboarding, reporting, and automation workflows using SQL and cutting-edge tools Define and implement best-practice data governance, security, and compliance standards Collaborate with architects, engineers, and business leaders to shape...
IR35 Status:
Inside IR35

CV-Library Reading, Berkshire Contractor
CL
Apr 22, 2026  
Senior Infrastructure Engineer - Workspace One
I am recruiting for a Senior Infrastructure Engineer to work on a hybrid basis - 3 days in either London, Manchester, Bristol, Newcastle, York, Glasgow or Norwich, 2 days remote. The role falls inside IR35 so you will be required to work through an umbrella company for the duration of the contract. You MUST have worked within central government recently. Working with the End User Compute Team you'll be instrumental in shaping the infrastructure, network and cloud capabilities that support vital services for the client. As the Senior Infrastructure Engineer (Mobile Device Management), you won't just be maintaining systems, you'll be a key architect of our future infrastructure landscape. Working alongside Technical Architects and Principal Engineers, you'll design, maintain and upgrade our infrastructure, tackling challenges head on and ensuring seamless service delivery. You must have several years of experience managing an MDM / EMM solution and SaaS based platforms. A...
IR35 Status:
Inside IR35

CV-Library City of London, London Contractor
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