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Inside IR35 senior engineer

62 senior engineer jobs found

CL
Apr 08, 2026  
Senior Engineer Outfit
Join a world-renowned aerospace and defence organisation as a Senior Engineer Outfit in Glasgow on a hybrid basis Would you like to join a global aerospace and defence organisation? Do you want to work as part of an organisation protecting people and maintaining maximum national security? Due to a drive for greater success, this advanced manufacturing business is currently searching for a Senior Engineer Outfit to add to their talented, hardworking team in Glasgow on an initial 6 month contract. Striving for innovation and creativity you can ensure no two days will be the same. This role will be offering £42.08 Umbrella per hour inside IR35 The role Undertake a defined range of Wholeship - Integration activities including Outfit systems, compartment design and integration activities in line with all relevant processes and quality requirements. Supplying advice and support to internal and external customers ensuring defined objectives are achieved whilst continually maintaining...
IR35 Status:
Inside IR35

CV-Library Glasgow, UK Contractor
CL
Apr 05, 2026  
Senior Software Engineer (DevSecOps)
Senior Software Engineer (DevSecOps) Contract | Inside IR35 | Up to £580/day | Full-time | North Yorkshire (1 day per week on-site, increasing from September) You will join a global IT consultancy delivering digital transformation to a well-established financial services organisation . You will be an experienced Senior Software Engineer with a strong DevSecOps background to join an engineering enablement function on an initial contract running to the end of December 2026. This is a hands-on role at the centre of modernising how software is built, delivered, and operated. You will work within a squad environment, driving adoption of Golden Path patterns, progressive delivery practices, and secure-by-design principles - with a clear focus on measurable outcomes. The role You will take ownership of the full delivery lifecycle: from pipeline design and environment architecture through to release-linked observability and incident readiness. Day to day, you can expect to be shipping...
IR35 Status:
Inside IR35

CV-Library Skipton, North Yorkshire Contractor
CL
Apr 05, 2026  
Senior Software Engineer in Test
Job Title: Senior Software Engineer in Test Type: Inside IR35 Contract Rate: £600-£650 per day Duration: 6 months minimum (likely to extend) Location: London - 3 days on site (Canary Wharf)  A large fintech business are looking for a senior-level quality engineer with a strong software engineering mindset to help shape and safeguard new platform capabilities across complex workflow-driven systems on a contract-basis. This role sits embedded within product engineering, operating in a shared ownership model alongside Java and React developers, with a heavy emphasis on automation. What you’ll be doing Building and maintaining automated coverage across the stack, from APIs through to user journeys, using established internal tooling and frameworks. Evolving existing test frameworks where required, while staying aligned with core engineering standards. Working closely with frontend and backend engineers to ensure critical paths are well understood, well tested, and production-ready....
IR35 Status:
Inside IR35

CV-Library London, UK Contractor
CL
Apr 05, 2026  
Senior Safety Engineer
We are supporting leading specialist in nuclear services and engineering delivery, as they seek a Senior Safety Engineer to support projects within their nuclear safety team. This is a contract role for an initial 6–12-month term and they are ideally seeking individuals with experience contributing to nuclear safety case documentation within highly regulated environments. The role is supporting nuclear programmes associated with legacy fuel cycle and decommissioning work linked to the Sellafield site. Rate:                    £63 – £76/hour (Umbrella – inside IR35) Location:            Warrington or Bristol- 3 days onsite / 2 days WFH Duration:            6-12 months initially Requirements: sole UK national living and working in the UK for the past 5 years    Key  Responsibilities As part of a team, providing the nuclear safety input to design projects, ensuring that nuclear safety requirements are considered Managing delivery for the work allocated Producing...
IR35 Status:
Inside IR35

CV-Library Warrington, UK Contractor
CL
Apr 04, 2026  
Senior EUC IT Support Engineer
Senior EUC IT Support Engineer 6 Months Contract Initially Bicester, Oxfordshire - 5 days a week on-site 9AM - 5.30PM Mon-Fri £(Apply online only) per day - INSIDE IR35 via umbrella company You will deliver end-user and device support across laptops, mobile devices, Microsoft 365 services, and meeting room technology, acting as a trusted point of contact for day-to-day IT issues. It involves close collaboration with a small, friendly IT team, working to resolve incidents, manage devices, and maintain a high standard of user experience. This position requires technical troubleshooting skills combined with excellent communication and customer service, as much of the work is face-to-face user support in an office environment. Disclaimer: This vacancy is being advertised by either Advanced Resource Managers Limited, Advanced Resource Managers IT Limited or Advanced Resource Managers Engineering Limited ("ARM"). ARM is a specialist talent acquisition and management consultancy. We...
IR35 Status:
Inside IR35

CV-Library Bicester, Oxfordshire Contractor
CL
Apr 04, 2026  
Senior Infrastructure Engineer
Senior Infrastructure Engineer £450 Per Day, Inside IR35 6-Month Contract Didcot, Oxfordshire Your new company We're supporting a nationally significant scientific research organisation recognised for delivering some of the most advanced and high-impact projects in the UK. Their digital platforms underpin cutting-edge experiments, secure collaboration and large scale data processing, and they rely on a modern, resilient infrastructure estate to keep these environments running safely and efficiently. As part of their ongoing investment in core services, they are seeking an experienced Senior Infrastructure Engineer to maintain, support and enhance their Microsoft 365, server, storage and authentication systems. This is a place where your technical expertise will directly contribute to work used across the UK science and innovation landscape. Your new role You'll take responsibility for the hands-on support and maintenance of both on-premise and cloud-based infrastructure....
IR35 Status:
Inside IR35

CV-Library Oxfordshire, UK Contractor
CL
Apr 04, 2026  
Senior Product Engineer
Senior Product Engineer Belcan seeks an experienced Senior Product Engineer for a 12-month Inside IR35 contract in Pitstone. The role involves leading engineering work packages for the development, validation, and industrialisation of smart motor and power generation technologies. Key Responsibilities Lead and mentor multidisciplinary engineering teams to deliver robust, manufacturable solutions aligned with cost and weight targets. Oversee and approve design solutions; support design reviews per client governance and product introduction processes. Produce high-quality technical documentation, including CAD models, drawings, BOMs, and assurance reports. Drive risk management and continuous improvement through design investigations, root cause analysis, and lessons learned. Author, review, and approve technical documentation for engineering and through-life support. Provide training, mentoring, and leadership to engineering personnel. Deliver fit-for-purpose designs with a...
IR35 Status:
Inside IR35

CV-Library Tring, Hertfordshire Contractor
CL
Apr 04, 2026  
Senior EC & I Engineer -Nuclear
Senior CE&I Engineer - Sellafield Projects Contract | £51-£56/hour (Inside IR35) Warrington | Hybrid - 3 days on site / 2 days remote Are you a Senior Control, Electrical & Instrumentation Engineer looking to apply your expertise within one of the UK's most complex nuclear environments? We are seeking a Senior CE&I Engineer to support a range of engineering and decommissioning projects across the Sellafield programme, delivering robust CE&I design and safety documentation within a highly regulated setting. This role offers the opportunity to contribute to nationally significant nuclear decommissioning work, supporting the delivery of safety-critical systems that underpin long-term hazard reduction at Sellafield. Key Responsibilities Deliver CE&I design work packages across a variety of nuclear engineering and decommissioning projects Produce and check design substantiation, safety documentation, and technical deliverables Provide expert CE&I input...
IR35 Status:
Inside IR35

CV-Library Warrington, Cheshire Contractor
CL
Apr 02, 2026  
Senior Electrical Design Engineer
Senior Electrical Design Engineer x 4 Inside IR35 £47.12 per hour 2-3 days per week on site (Lancashire) Job description * As a Senior Electrical Design Engineer you will be part of a team producing the physical product definition to satisfy a set of multidisciplinary system functional requirements, taking account of safety, cost, manufacturing, in-service support and other considerations. Your engineering capabilities will be developed across a range of design skills and product lifecycle stages, working both in a model-based and 2D drawing engineering environment centred on Catia V5. * Typically your design capabilities will be developed using: * The CATIA V5 Electrical 3D & 2D Design Toolset in the design installation of electrical equipment, routing of electrical harnesses, incorporating support structure and physical separation requirements, taking account of system performance, system safety, system redundancy as well as cost and through-life considerations. * A...
IR35 Status:
Inside IR35

CV-Library Manchester, Greater Manchester Contractor
CL
Apr 02, 2026  
Senior Systems Engineer
2 Senior Systems Engineers Inside IR35 £81.05 per hour 6 months initial term This is a senior technical role relating to the Electronic aspects of hardware design for systems engineering. A highly experienced professional engineer with a depth and breadth of knowledge in Electronics Engineering who speaks and acts authoritatively on matters pertaining to their discipline, leading and applying the principles of Electronics Engineering across the entire engineering development lifecycle from requirement definition to system integration and customer acceptance into system support and disposal. Employs a depth and breadth of expertise relating to Electronics Systems Engineering to the most complex engineering problems, challenges, and issues associated with the domain. Designs, develops, promotes and shares discipline knowledge and capability for implementation across the business and programmes, providing authoritative guidance to others relating to area of expertise. Acts as...
IR35 Status:
Inside IR35

CV-Library Portsmouth, Hampshire Contractor
CL
Apr 02, 2026  
Senior Systems Engineer
2 Senior Systems Engineers Inside IR35 £81.05 per hour 6 months initial term This is a senior technical role relating to the Electronic aspects of hardware design for systems engineering. A highly experienced professional engineer with a depth and breadth of knowledge in Electronics Engineering who speaks and acts authoritatively on matters pertaining to their discipline, leading and applying the principles of Electronics Engineering across the entire engineering development lifecycle from requirement definition to system integration and customer acceptance into system support and disposal. Employs a depth and breadth of expertise relating to Electronics Systems Engineering to the most complex engineering problems, challenges, and issues associated with the domain. Designs, develops, promotes and shares discipline knowledge and capability for implementation across the business and programmes, providing authoritative guidance to others relating to area of expertise. Acts as...
IR35 Status:
Inside IR35

CV-Library Chelmsford, Essex Contractor
CL
Apr 02, 2026  
Senior DevOps Engineer
Senior DevOps Engineer – 6-month contract – London/Remote – SC Clearance – Inside IR35 My Financial Customer is looking for a Senior DevOps Engineer to join a growing technology team responsible for maintaining and evolving a complex on-premise platform. This role will play a key part in ensuring the reliability, performance, and continuous improvement of the organisation’s technical estate while supporting the delivery of new services. This Senior DevOps Engineer is required to have experience with the following: Cloud Platform (Azure, AWS, or GCP), Kubernetes, IaC using Terraform and CI/CD pipelines. Skills & Experience required from the Senior DevOps Engineer: Active SC Clearance Cloud Platforms (Azure, AWS, or GCP) Strong experience supporting production environments, including on-call support and release management. Hands-on experience with Kubernetes or OpenShift in on-premise environments. Proven background in Linux system administration Experience implementing...
IR35 Status:
Inside IR35

CV-Library London, UK Contractor
CL
Apr 02, 2026  
Senior HVAC Mechanical Engineer
12 Month Contract £40.64 per hour umbrella (Inside IR35) Hybrid Working – 1 – 2 days per week on site 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 standards, and quality expectations. This includes Heat Load Calculations, Psychrometrics, Pressure Drop...
IR35 Status:
Inside IR35

CV-Library Glasgow, UK Contractor
CL
Apr 08, 2026  
Site Engineer
An inside IR35 contract role is available for a Site Engineer to support the delivery of a major £300 million reinforced concrete package on a cutting-edge carbon capture facility. The position involves providing engineering expertise across several key structures, including the turbine hall, condenser plant, and carbon capture unit. Reporting to the Section Engineers, your key responsibilities will be to -   Work safely and in line with approved systems, raising any concerns around safety, environment, or quality. Proactively challenge unsafe practices and carry out safety observations when needed. Perform accurate setting out for complex concrete structures, earthworks, roads, and utilities. Support the Senior Engineers/Section Engineers with material take-offs, stock control, and order scheduling. Prepare Inspection and Test Plans (ITPs), ensure they’re followed, and brief relevant team members. Liaise with the materials team to monitor progress and ensure timely...
IR35 Status:
Inside IR35

CV-Library United Kingdom Contractor
CL
Apr 04, 2026  
Mechanical Design Engineer
Mechanical Design Engineer - Contract (12 Months) | Bedfordshire | Inside IR35 Looking to take on complex engineering challenges that genuinely push your technical capability? We're seeking experienced Mechanical Design Engineers to join a high integrity defence engineering programme focused on advanced platform integration and mission-critical systems. This is an opportunity to work on cutting-edge mechanical sub-systems, complex mechanisms, and high reliability components designed for demanding military environments. Location Ampthill, Bedfordshire On-site presence required Mondays and Tuesdays from September 2025 Contract Details Duration: 12 months Hours: 37.5 per week Schedule: 4-day week (Mon-Thurs) with flexible working Rate: Competitive per hour (inside IR35, inclusive of employer deductions) Clearance: BPSS to start; SC required later Eligibility: Sole UK nationals only (due to programme requirements) Role Overview As a Mechanical Design Engineer, you'll be...
IR35 Status:
Inside IR35

CV-Library Ampthill, Bedfordshire Contractor
CL
Apr 04, 2026  
Mechanical Design Engineer
Mechanical Design Engineer - Contract (12 Months) | Bedfordshire | Inside IR35 Looking to take on complex engineering challenges that genuinely push your technical capability? We're seeking experienced Mechanical Design Engineers to join a high integrity defence engineering programme focused on advanced platform integration and mission-critical systems. This is an opportunity to work on cutting-edge mechanical sub-systems, complex mechanisms, and high reliability components designed for demanding military environments. Location Ampthill, Bedfordshire On-site presence required Mondays and Tuesdays from September 2025 Contract Details Duration: 12 months Hours: 37.5 per week Schedule: 4-day week (Mon-Thurs) with flexible working Rate: Competitive per hour (inside IR35, inclusive of employer deductions) Clearance: BPSS to start; SC required later Eligibility: Sole UK nationals only (due to programme requirements) Role Overview As a Mechanical Design Engineer, you'll be...
IR35 Status:
Inside IR35

CV-Library Ampthill, Bedfordshire Contractor
CL
Apr 04, 2026  
Mechanical Design Engineer
Mechanical Design Engineer - Contract (12 Months) | Bedfordshire | Inside IR35 Looking to take on complex engineering challenges that genuinely push your technical capability? We're seeking experienced Mechanical Design Engineers to join a high integrity defence engineering programme focused on advanced platform integration and mission-critical systems. This is an opportunity to work on cutting-edge mechanical sub-systems, complex mechanisms, and high reliability components designed for demanding military environments. Location Ampthill, Bedfordshire On-site presence required Mondays and Tuesdays from September 2025 Contract Details Duration: 12 months Hours: 37.5 per week Schedule: 4-day week (Mon-Thurs) with flexible working Rate: Competitive per hour (inside IR35, inclusive of employer deductions) Clearance: BPSS to start; SC required later Eligibility: Sole UK nationals only (due to programme requirements) Role Overview As a Mechanical Design Engineer, you'll be...
IR35 Status:
Inside IR35

CV-Library Ampthill, Bedfordshire Contractor
CL
Mar 19, 2026  
Site Engineer
An inside IR35 contract role is available for a Setting out Site Engineer to support the delivery of a major £300 million reinforced concrete package on a cutting-edge carbon capture facility in Teesside. The position involves providing engineering expertise across several key structures, including the turbine hall, condenser plant, and carbon capture unit. Reporting to the Section Engineers, your key responsibilities will be to -   Work safely and in line with approved systems, raising any concerns around safety, environment, or quality. Proactively challenge unsafe practices and carry out safety observations when needed. Perform accurate setting out for complex concrete structures, earthworks, roads, and utilities. Support the Senior Engineers/Section Engineers with material take-offs, stock control, and order scheduling. Prepare Inspection and Test Plans (ITPs), ensure they’re followed, and brief relevant team members. Liaise with the materials team to monitor...
IR35 Status:
Inside IR35

CV-Library United Kingdom Contractor
CL
Apr 08, 2026  
Back End Software Engineer - SC Cleared
Back End Software Engineer - SC Cleared Contract | Remote (occasional London travel) | £450/day (inside IR35) We're recruiting on behalf of a major government technology programme for a senior software engineer to help design and evolve high-performance, cloud-based systems that support critical public services. This is a hands-on technical role with real influence - you'll contribute to architecture decisions, mentor colleagues, and own complex integrations end-to-end. Working within an Agile squad, you'll lead technical design discussions, manage CI/CD pipelines, and play an active role in incident and change management, all within a modern Azure cloud environment. What you'll need Angular - component architecture and state management Node.js - async programming and API/backend services Azure - designing and managing scalable cloud infrastructure Terraform - infrastructure as code and environment automation Jenkins - CI/CD pipelines and automated testing Git - branching...
IR35 Status:
Inside IR35

CV-Library London, UK Contractor
CL
Apr 08, 2026  
Senior Software Engineering Manager
Our client has an opportunity for a Senior Software Engineering Manager to join them on a contract basis. Reporting to the System Design Manager, you will be responsible for the management and day-to-day activities of the software team, collaborating with other disciplines and managers in all areas of the business. Role: Senior Software Engineering Manager Location: Farnborough - fully onsite Hours: 37 per week Hourly Rate: £52.17 per hour via Umbrella, inside IR35 Clearance: BPSS required before starting What you'll be doing: Team Leadership: Lead the day to day activities of the software team, taking responsibility for delivering the agreed team goals. Skills Development: Develop the team's personal and professional skills, acting as a mentor and coach to the team members. Team growth: Be part of the recruiting team seeking new talent as the team grows. Be accountable for the planning, design, development, verification and integration of the software for the...
IR35 Status:
Inside IR35

CV-Library Farnborough, Hampshire Contractor
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