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Outside IR35 Contractor service designer

36 service designer jobs found

CL
Jul 17, 2026  
Service Consultant - Service Design and Transition
Service Consultant - Service Design, Transition & ServiceNow CSM Contract: 6 Months Start: ASAP Rate: Up to £525 per day Location: London or Leeds IR35: Outside IR35 Security Clearance: NPPV3 Required TRIA are supporting a specialist technology services organisation in the search for an experienced Service Consultant to join a high-profile programme delivering complex managed service solutions. This is a hands-on role requiring a proactive, "roll-your-sleeves-up" approach. You'll play a key role in taking service operating models from concept through to implementation, ensuring new and enhanced services are fully operationally ready and successfully transitioned into support. Working closely with Service Architects, Solution Architects, Project Managers, Professional Services teams and Operational stakeholders, you'll be responsible for designing, enabling and embedding service management capabilities that support the successful delivery of complex managed services....
IR35 Status:
Outside IR35

CV-Library London, UK Contractor
CL
Jul 21, 2026  
Senior Software Engineer
Lead Backend Software Engineer – Data Services Federated Data Services | Distributed Systems | Apache Spark | DataFusion | Python | Kubernetes Location: London (2 days per week onsite) Rate: £700–£800 per day (Outside IR35) Duration: Initial 6-month contract with likely extension Overview We're looking for an experienced Lead Backend Software Engineer to join a high-profile programme building secure, cloud-native data services that will support data-driven research and innovation at national scale. This is a founding engineering role, offering the opportunity to shape the architecture, engineering standards, and core data services from the ground up. Working closely with the Engineering Manager and a small team of senior engineers, you'll establish the technical foundations for a complex federated data platform operating within a highly regulated environment. We're looking for someone who enjoys building from first principles, thrives in ambiguity, and can balance strategic...
IR35 Status:
Outside IR35

CV-Library London, UK Contractor
CL
Jul 20, 2026  
Infrastructure Tester - DV cleared
Infrastructure Tester x2 Location: Hampshire (Onsite) Duration: 18 Months Clearance: DV Clearance required (Active) Rate: £550 - £650 a day per day - Outside IR35 We are seeking an experienced DV Cleared Infrastructure Tester to join a major secure government programme based on-site in Basingstoke. This is a hands-on testing role focused on validating and assuring complex Zero Trust Infrastructure environments supporting mission-critical services. Working within a highly secure delivery team, you will be responsible for planning, executing and reporting infrastructure testing activities across a range of technologies, ensuring solutions are robust, secure and fit for operational deployment. Key Responsibilities Design and execute infrastructure test plans, test cases and test scripts. Validate Zero Trust architecture components and supporting infrastructure. Perform end-to-end testing across servers, networks, security controls and integrations. Verify deployments,...
IR35 Status:
Outside IR35

CV-Library Basingstoke, Hampshire Contractor
CL
Jul 19, 2026  
Security Architect
Security Architect - Defence Security Clearance: SC cleared Location: Corsham – 2-3 days per week Rate: up to £650pd outside IR35 Duration: 9 months Exceed Cyber are working with a leading NCSC Assured Security Consultancy who require an experienced Security Architect to support the delivery of a large-scale Defence programme. This is an excellent opportunity to play a key role in shaping the security posture of a complex, high-profile environment, providing architectural leadership and Secure by Design expertise across a portfolio of critical projects and workstreams. The Security Architect will be responsible for: * Providing security architecture leadership and advice across assigned projects and workstreams. * Reviewing technical designs, architecture artefacts and delivery proposals to assess alignment with security requirements. * Supporting Secure by Design activity by embedding security considerations into project planning, design and delivery. * Defining,...
IR35 Status:
Outside IR35

CV-Library Corsham, Wiltshire Contractor
CL
Jul 19, 2026  
Electrical Design Engineer
Electrical Design Engineer (Contract) Greater Manchester | £45ph Outside IR35 | Hybrid Working | Long-Term Opportunity Are you an Electrical Design Engineer looking for your next contract with the potential for a long-term engagement? Join a well-established and highly respected Building Services consultancy with a strong MEP team delivering technically challenging pharmaceutical projects. With a healthy project pipeline and immediate demand, this is an excellent opportunity to secure a contract with genuine longevity. The Role You'll be working as part of an experienced Electrical Design team, producing high-quality building services designs on complex pharmaceutical projects from concept through to detailed design. You'll collaborate closely with multidisciplinary teams and clients to deliver technically robust solutions. What's on Offer * £45 per hour Outside IR35 * Long-term contract opportunity with strong extension potential * Hybrid working (1-2 days per week in...
IR35 Status:
Outside IR35

CV-Library Manchester, Greater Manchester Contractor
CL
Jul 19, 2026  
Test and Verification Engineer
Medical Test Verification & Validation Engineer - Class III Medical Device Job Title: Medical Test Verification & Validation Engineer Duration: 6 months initially Location: Hybrid (3 days per week), Sheffield Outside IR35 £50-£65 per hour Key Responsibilities Develop and execute verification and validation activities for a Class III medical device, producing verification protocols, validation plans and test reports in line with design control requirements. Perform functional, integration, performance and reliability testing across hardware, embedded software and complete systems, ensuring full requirements traceability. Investigate test failures, support root cause analysis and collaborate with hardware, software and systems engineers to resolve issues. Generate objective evidence to support IEC 60601 compliance, ISO 14971 risk management and MDR/FDA regulatory submissions while contributing to continuous improvement of V&V processes. Essential Skills Proven...
IR35 Status:
Outside IR35

CV-Library Sheffield, South Yorkshire Contractor
CL
Jul 18, 2026  
Senior UX/UI Desinger
Senior UX/UI Designer - Portsmouth (Hybrid) - Contract Outside IR35, £65-£75 Per Hour We're supporting a global engineering and technology consultancy that partners with some of the world's most recognised organisations to deliver complex digital transformation programmes across sectors including defence, aerospace, government, transport and financial services. They're now looking for an experienced Senior UI/UX Designer to support the refresh of an established software product, improving usability, user journeys and interface design within a technically complex environment. What you'll be doing Designing intuitive user interfaces for an existing software platform Producing wireframes, screen layouts and interactive design concepts Creating clear user journeys and interaction flows Simplifying complex technical functionality into user-friendly experiences Applying UX best practice, accessibility principles and usability standards Collaborating closely with technical...
IR35 Status:
Outside IR35

CV-Library Portsmouth, Hampshire Contractor
CL
Jul 18, 2026  
Site Manager
NES Fircroft are currently recruiting for a Site Manager for our client, who are the operator on a flagship UK power project.  Site Manager Location: Norfolk Duration 12 months Outside IR35 The Onshore General Site Manager is to act as the onsite Client Represent active during the site initial designs, constructability assessments and planning and later construction and handover of the works. Supports the HVDC Package Manager through the construction phase, and manages all aspects of the Client’s site duties under the Contract. The role will co-ordinate the client site representatives and and site information within the project. The role will facilitate resolution of site-based issues to ensure that employers risks are mitigated through regular/adhoc meetings, discussions, ensuring adequate recording of such. The role will have support of the Package Manager in representing and resolving site issues with the Contractor’s Senior Management team. The role will be...
IR35 Status:
Outside IR35

CV-Library Necton, UK Contractor
CL
Jul 18, 2026  
Network Systems Engineer
Network Systems Engineer - Contract Opportunity Location: Basildon Duration: 6 Months Rate: Up to £74 p/h (Outside IR35) About the Role We are seeking a highly skilled Network Systems Engineer to support a leading engineering team on a critical programme. This role involves hands-on configuration, lab support, and contributing to the development of robust network architectures. You?ll work closely with the Lead Systems Engineer and wider technical teams to ensure systems are delivered to exacting standards. Key Responsibilities Systems Configuration - Configure systems in line with Lead Systems Engineer specifications. Trials Support - Provide technical assistance during trials and test activities. Network Architecture Development - Support the creation of network architectures for lab environments. Lab Infrastructure Maintenance - Assist in maintaining and developing lab infrastructure and associated environments. Required Experience OSI Model - Strong understanding of...
IR35 Status:
Outside IR35

CV-Library Basildon, Essex Contractor
CL
Jul 18, 2026  
Quality Enigneer
Quality Engineer (Contract) Location: Bridgenorth Rate: £40 per hour outside IR35 Start Date: Immediate I'm currently supporting an established engineering and manufacturing business that is looking to secure an experienced NPI Quality Engineer on an urgent contract basis. This role will play a key part in supporting new product introduction activities, ensuring robust quality planning and process validation throughout the product development lifecycle. Working closely with Engineering, Manufacturing, Supply Chain, and Customer teams, you will be responsible for driving quality standards across multiple NPI projects while ensuring customer and regulatory requirements are met. This is an excellent opportunity for an experienced Quality professional with a strong background in APQP, PPAP, FMEA, and GD&T who enjoys working in a fast-paced manufacturing environment. Key Responsibilities Support New Product Introduction (NPI) projects from concept through to production...
IR35 Status:
Outside IR35

CV-Library Bridgnorth, UK Contractor
CL
Jul 17, 2026  
Electrical Design Engineer
An exciting opportunity has arisen for an experienced Electrical Design Engineer to support the delivery of major data centre developments within a leading building services consultancy. This Electrical Design Engineer role is ideal for someone with a strong building services background who enjoys delivering technically complex electrical designs across mission-critical projects. You'll work on high-profile data centre developments, supporting projects through key design stages while collaborating with multidisciplinary engineering teams. The successful Electrical Design Engineer will join an established project team delivering large-scale data centre developments, producing high-quality electrical designs and helping to deliver innovative engineering solutions. The Role As an Electrical Design Engineer, you'll be involved in: Delivering electrical building services designs for major data centre projects Producing detailed electrical calculations, reports and technical...
IR35 Status:
Outside IR35

CV-Library London, UK Contractor
CL
Jul 17, 2026  
Agentic AI Engineer
Agentic AI Engineer – Outside IR35 | Fully Remote | 12-Month Contract | Role: Agentic AI Engineer Location: Fully Remote Contract Length: 12 months IR35 Status: Outside IR35 I'm working with an innovative MedTech organisation at the forefront of AI-driven healthcare solutions. They are looking for a highly skilled Agentic AI Engineer to join their team on a long-term contract and help scale cutting-edge intelligent systems. Key Responsibilities Design and build agentic AI systems using modern LLM frameworks Develop and deploy Generative AI solutions across production environments Work with structured and unstructured data using Python & PySpark Implement Claude Code / LLM-based workflows for real-time decision-making Collaborate with cross-functional teams to integrate AI capabilities into existing platforms Ensure solutions are scalable, reliable, and aligned with regulatory requirementsKey Skills & Experience Strong experience with Agentic AI architectures Hands-on...
IR35 Status:
Outside IR35

CV-Library London, UK Contractor
CL
Jul 16, 2026  
Senior Mechanical Design Engineer
Senior Mechanical Design Engineer - Building Services / MEP Location – South Bucks – Hybrid Working – Duration 3 months + Rate £40 - £45 per hour, Outside IR35 Mechanical Design Engineer / Senior Mechanical Design Engineer / MEP This role is to join an established firm of Building Services Consulting Engineers covering a varied range of projects including high end commercial, sport and leisure, education, healthcare and science, and high rise residential. Key Responsibilities: * Undertake design calculations * Delivering detailed mechanical designs on a wide variety of projects * Specifying maintenance and operating procedures * Using Revit and amending 3D models * Attending meetings as required Experience & Skills Required * You will be a mechanical design engineer with at least 4 to 5 years’ experience in building services. * Ideally you will have a degree in a relevant subject or accredited building services degree. * Experience of Revit and the ability to...
IR35 Status:
Outside IR35

CV-Library HP22, Wendover, Buckinghamshire Contractor
CL
Jul 16, 2026  
Full Stack Engineer
Contract Full Stack / Backend Engineer III - Trust & Safety Platforms Duration: 6-Month Contract (with potential for extension) Location: 100% Remote (UK-based) Inside/Outside IR35: Insert IR35 The Opportunity We are looking for a Senior Full Stack / Backend Engineer (Level III) to join the Trust & Safety / Policy Platform team for one of the world's leading, household-name audio streaming platforms. If you are a backend-heavy engineer who enjoys the autonomy of building robust APIs and crafting the internal web tools that power them, this contract is for you. What You'll Do Engineers at Scale: Build and scale the core APIs and services that expose complex policy logic across detection, enforcement, and compliance surfaces. Data & ML Pipelines: Model data for strict auditability, versioning, and efficient querying, feeding structured datasets directly into downstream machine learning models. Empower Internal Teams: Design and implement intuitive, responsive web...
IR35 Status:
Outside IR35

CV-Library London, UK Contractor
CL
Jul 16, 2026  
Embedded Software Engineer
Embedded Software Engineer | Outside IR35 | Cambridge The client is looking for specialist embedded software development services to deliver defined firmware components for an embedded Linux platform. They are looking for multiple software engineers, so I encourage you to apply if you have any recent experience developing software on an embedded Linux platform. Scope of Services * Development of embedded Linux firmware for target hardware platforms (OMAP & iMX6), including kernel configuration, BSP updates, and device driver enablement * Implementation of software required to support platform bring-up and peripheral integration (e.g. UART, SPI, I2C, PCIe) * Integration of firmware into the wider system, ensuring compatibility with existing software components * Investigation and resolution of technical issues relating to firmware, including hardware/software interaction faults * Production of supporting artefacts (design documentation, test specifications, and...
IR35 Status:
Outside IR35

CV-Library Cambridge, Cambridgeshire Contractor
CL
Jul 16, 2026  
Mechanical Engineer
My client is a well-established M&E engineering company who are seeking a Mechanical Engineer to join their team on a long-term contract basis. This role will involve working on a high-profile project within the London area. The client is looking for an experienced mechanical design engineer with strong building services experience, ideally gained on large-scale, complex projects. Benefits * Rate of £(Apply online only) a day outside IR35 (Depending on Experience) * Contract ongoing until September 2027 * Weekly Payments Key Responsibiltiies For this role they are looking for someone who can: * Lead the delivery of mechanical building services design on complex projects * Produce and review detailed mechanical designs, calculations, specifications and technical reports * Coordinate effectively with electrical and wider multidisciplinary design teams * Support client meetings and providing technical input throughout all project stages * Ensure design...
IR35 Status:
Outside IR35

CV-Library London, UK Contractor
CL
Jul 16, 2026  
Revit Technician
Revit Technician - Infrastructure & Mission-Critical Projects 📍 London | Office-Based (5 Days Per Week) 💰 £35-£39 per hour 🕒 6-Month Contract | Outside IR35 An opportunity has arisen for an experienced Revit Technician to support the delivery of major infrastructure, building structures and mission-critical projects across the UK. This Revit Technician role is ideal for someone who enjoys developing coordinated BIM models, managing technical information and supporting multidisciplinary project teams throughout the design and construction process. The successful Revit Technician will play a key role in digital project delivery, working closely with engineers, designers and site teams to ensure accurate, coordinated and construction-ready information is produced across complex developments. The Role As a Revit Technician, you'll be involved in: Developing and maintaining coordinated 3D models using Revit and BIM technologies Producing technical drawings, layouts,...
IR35 Status:
Outside IR35

CV-Library London, UK Contractor
CL
Jul 16, 2026  
Senior Mechanical Design Engineer
Senior Mechanical Design Engineer Birmingham I am seeking a Senior Mechanical Design Engineer for an established automotive engineering company. This is a contract role outside ir35. They are part of a growing successful business operating in the supply of proprietary systems and components to the world's construction equipment, truck, agricultural machinery and industrial applications end-markets. The company has a global manufacturing presence including in the USA, Germany, UK, Sweden, India and China. What You Will Do: As Senior Mechanical Design Engineer; To assist in the design of a range of engine ancillaries including oil, water & fuel pumps Concept and detailed design of e-Pumps for Data centre applications. Ability to work from 1 st principals in concept design work utilising problem solving skills Work alongside engineering team to ensure design is optimised for manufacture To liaise with design team & Chief Engineer to resolve design issues. Create CAD...
IR35 Status:
Outside IR35

CV-Library Birmingham, UK Contractor
CL
Jul 16, 2026  
Project HSE Advisor / Lead (Contract Outside IR35)
Great opportunity to work as a Project HSE Advisor / Lead for a growing Renewable Energy Company, on a flagship large-scale energy storage facility which will be one of the largest long-duration storage projects in Europe. The Opportunity We are seeking an experienced and highly motivated HSE Project Lead to join a landmark energy infrastructure project in Scotland. This is a rare opportunity to play a leading role in the safe delivery of one of the UK's most significant energy transition projects, involving complex civil, mechanical, electrical and process engineering construction activities. Reporting directly to the Project Director, the HSE Project Lead will provide strategic and operational leadership across all aspects of Health, Safety and Environmental management throughout the construction and commissioning phases of the project. The successful candidate will be a visible leader on site, driving a proactive safety culture, ensuring compliance with statutory...
IR35 Status:
Outside IR35

CV-Library North Ayrshire Council, UK Contractor
CL
Jul 16, 2026  
Site Agent-Highways Technologies-Herts-Outside IR35
Due to an increase in workload within their Highways division on the Technologies side, our client, a top Regional Contractor are seeking the services of a Site Agent to oversee works including CCTV, Speed Sign Upgrades, Lighting and other areas all on their M25 Framework and based from their offices in Chigwell and or Dartford. The role will include orgainsing new schemes including Design, Planning works, Commerical and Health & Safety and ultimately ensuring they are run to time and budget. To be considered you will hold SMSTS and CSCS certification as a minimum and be a proven Site Agent within this area of Highways works. In return, a top day rate is on offer which is Outside IR35 and comes with a long term contract. Great opening so if interested, please send a copy of your CV to Dave Rowe by email or call Dave on (phone number removed)
IR35 Status:
Outside IR35

CV-Library Chigwell, Essex Contractor
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