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Contractor 16
Inside IR35 London site engineer

16 site engineer jobs found in London

CL
Jun 14, 2026  
SC Cleared Senior Data Engineer
Senior Data Engineer | £650 - £700 Inside IR35 | Hybrid | London We are looking for an experienced Senior Data Engineer to join a high-profile project delivering modern data solutions within a secure environment. This is a hybrid role which will require you to be on site 2 days per week in London. Active SC Clearance is mandatory for this role – candidates without current SC clearance cannot be considered Key Responsibilities Design and build scalable data pipelines Work across large-scale data platforms and cloud environments Collaborate with engineering and architecture teams to deliver high-quality solutions Key Skills & Experience Strong experience with Python and PySpark Hands-on expertise in AWS Experience working with Databricks Ideally 5+ years working with this tech stack as a data engineer Proven background delivering data engineering solutions at scale If this is a role that suits you skill set, you have active SC clearance and are available immediately then...
IR35 Status:
Inside IR35

CV-Library London, UK Contractor
CL
Jun 18, 2026  
Subject Matter Expert/Design Manager (Airports)
An exciting opportunity has arisen for an experienced Subject Matter Expert/Design Manager (Airfield Systems) to join a major UK airport, supporting the delivery of a multi-billion-pound capital investment programme focused on enhancing critical airport infrastructure and operational efficiency. This role sits within a dynamic construction and project delivery environment and will play a pivotal role in leading the design of large-scale, strategically important airfield systems projects (typically £100m-£150m+). The Role As the Subject Matter Expert/Design Manager, you will lead design management activities from project inception through to construction, commissioning and handover, ensuring solutions are safe, compliant, cost-effective, and aligned with operational requirements. You'll manage a small team of Design Management professionals and act as a key interface between internal stakeholders, engineering teams, and external design consultants and contractors. Key...
IR35 Status:
Inside IR35

CV-Library Gatwick, West Sussex Contractor
CL
Apr 17, 2026  
Systems Performance Modelling Engineer
World Class Defence Organisation based in Stevenage and Bristol is currently looking to recruit a Systems Performance Modelling Engineer subcontractor on an initial 12 month contract.  Your base site can be either Stevenage or Bristol, depending on your preference. The role can be worked on a 4 day week basis (Monday to Thursday) but due to the nature of the work, the position will need to be based onsite.     This role would be suitable for a Simulation and Modelling Engineer (Matlab / Simulink) ideally from the defence or aerospace industry.   Rate: £80.00 per hour Location: Your base site can be either Stevenage or Bristol, depending on your preference Hybrid / Remote working: The role will based onsite.  A compressed 4-Day week of Monday to Thursday is possible 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...
IR35 Status:
Inside IR35

CV-Library Stevenage, 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 20, 2026  
Electrical/Avionics Design Engineer
Line Up Aviation is a specialist aviation and aerospace recruitment company that has been operating worldwide for more than 35 years. We work with some of the industry's best-known companies who demand the highest standard of service. On behalf of our client, a global aircraft manufacturer, we are currently recruiting an Electrical/Avionics Design Engineer with recent experience of working within an EASA Part 21 Design organisation. To be successful in your application you will need to hold UK working rights at the time of application, sponsorship is not available. Job Title: Electrical/Avionics Design Engineer Location: Frimley, UK, Hybrid working available 3 days in office. Employment Type: Contract initially a 12-month period. Working time: Mon -Friday only Package: Competitive hourly Rate, Inside IR35 (umbrella) This role will require occasional national and/or international travel to visit teammates, customers and subcontractors. Scope of Role Join a...
IR35 Status:
Inside IR35

CV-Library Frimley, Surrey Contractor
CL
Jun 20, 2026  
Electrical Project Engineer
Role: Electrical Project Engineer Location: Bedfordshire IR35: Inside Hybrid: 3 days on site Project details WwTW project Putting in new ASP, Tertiary treatment, MCCs The engineer will initially be reviewing design drawings from Pell Frischmann - SLDs, P&IDs, MCCs etc. Later site work will be liaising with subcontractors, working with supervisors to manage the packages, and determining control philosophies. Team consists of MEICA
IR35 Status:
Inside IR35

CV-Library Bedfordshire, UK Contractor
CL
Jun 18, 2026  
AI Application/Big Data Engineer
AI Application/Big Data Engineer 6-Month contract - Inside IR35 - market rate London based - hybrid working - up to 3 days a week onsite Finance sector - must have previous experience Role Overview Senior AI / Data Engineer responsible for designing, building, and optimizing AI-driven data pipelines and integrations to enable a QAS-powered response suggestion capability embedded in Salesforce Service Cloud. The role focuses on scalable data processing, LLM integration, and continuous model improvement using production telemetry. Responsibilities Design and implement Salesforce ↔ QAS integration architecture Build and optimize data pipelines supporting AI inference and feedback loops Develop backend services / APIs enabling response suggestion workflows Integrate LLM capabilities (Amazon Bedrock) for response generation and embeddings Enable continuous model tuning via: telemetry data quality scoring usage analytics Work with structured and unstructured data sources:...
IR35 Status:
Inside IR35

CV-Library London, UK Contractor
CL
Jun 18, 2026  
Senior Full Stack Engineer (GCP, Python, JavaScript) Remote
My London based client are looking for an experienced Full Stack Engineer for an initial 6 month contract to start ASAP. The position can also be fully remote. The ideal candidate will have the following experience: Google Cloud: Experience deploying and managing applications within the Google Cloud Platform (GCP) ecosystem. ● JavaScript/TypeScript Expert: Expert-level knowledge of modern language features, asynchronous patterns, and static typing. ● React: Expert knowledge of building interfaces, managing state, and optimizing performance within React. ● NodeJS/Express: Strong experience building and scaling server-side applications using Express. ● Python Expert: Strong experience building backend services using FastAPI and managing database migrations with Alembic. ● AI Tooling: Familiarity with integrating AI APIs (such as Codex or Claude) and using AI-assisted development workflows. ● Agile Experience: Proven track record working within Agile teams and...
IR35 Status:
Inside IR35

CV-Library London, UK Contractor
CL
Jun 18, 2026  
Senior Construction Project Manager - SC
Job Title: Senior Construction Project Manager Location: London (2 days/week on site) Contract Duration: 31/12/26 Daily Rate: £681/day (Umbrella – Maximum) IR35 Status: Inside IR35 Security Clearance: SC The Role: This person would be the senior project manager for a high profile project in the built environment sector taking place in London and would have the technical and scheduling knowledge to manage the contractors delivery teams and designer. Job Responsibilities: Lead construction delivery. Hold the contractor to account on scheduling and cost. Risk Management & Mitigation. Identify potential project roadblocks—such as permit delays or budget overruns and implement strategies to keep the project on track. Primary Liaison. Act as the main point of contact between the owner/developer and the design team (Architects/Engineers). Coordination between professional services, contractor, key stakeholders & internal stakeholders. Regular reporting on progress to senior...
IR35 Status:
Inside IR35

CV-Library London, UK Contractor
CL
Jun 17, 2026  
Health And Safety Manager
Health & Safety Manager – Major Civils (Contract) Location: London Assignment Rate: £500 – £600 per day (Inside IR35) Job type: Contract Working Pattern: Hybrid – 3 days per week on site We are supporting a client organisation delivering one of the UK’s largest and most complex infrastructure programmes in the appointment of an experienced Health & Safety Manager on a contract basis. This role is operationally focused, with a strong site presence required to support live major civils works, while also allowing flexibility through a hybrid working arrangement. The position is suited to candidates with genuine major civils experience. Consultancy or light construction backgrounds will not be suitable. The Role You will operate as a site-embedded Health & Safety Manager, working closely with construction managers, engineers and subcontractors to ensure works are delivered safely, compliantly and in line with Tier 1 standards. The role balances hands-on site...
IR35 Status:
Inside IR35

CV-Library Camden, Greater London Contractor
CL
May 24, 2026  
Electronics Design Engineer (HV Design)
We are recruiting for an Electronics Design Engineer (HV Design) to join our London-based manufacturing client in 6-month rolling contract role inside IR35 (through umbrella). As an Electronics Design Engineer (HV Design), you will be responsible for providing high-voltage (HV) design expertise, including creepage and clearance considerations, as well as validation activities. You will assess and develop solutions for HV clearance challenges at the PFE level and within HV switch designs. THE SUCCESSFUL APPLICANT * Degree in electrical/electronic engineering; at least 8 years of experience. * Must have end to end HW product development experience involving complex electronics with deep knowledge and strong hands-on experience in: * Power electronics (DC-DC converters up to 5kW, HVDC systems). * High-voltage engineering (design, validation, standards compliance). * Thermal/mechanical integration for high-power systems. * Experience in electronics design within a regulated...
IR35 Status:
Inside IR35

CV-Library SE10, Peninsula, Greater London Contractor
CL
Jun 14, 2026  
Systems Design Engineer
World Class Defence Organisation is currently looking to recruit 2x Systems Design Engineer subcontractors on an initial 12 month contract.   Rate: £80.00 per hour Overtime Rate: Hours worked over the standard 37 hours per week, will be paid at ‘time and a quarter’ Location: The role can be based either from the companies Stevenage, Bolton or Bristol sites Hybrid / Remote working: circa 4 days onsite (more remote working may be 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   Systems Design Engineer Job Description: Seekers department develop RF Seekers for use in Missile products.  Responsibilities: Working as part of team developing system architecture and design utilising MBSE. Deriving and managing requirements Communicating with various stakeholders with the Seeker team and the external customer and suppliers Developing Physical...
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
May 01, 2026  
Test Development Engineer
World Class Defence Organisation is currently looking to recruit a Test Development Engineer on an initial 6 month contract.  The role will be a hybrid position of 50 / 50 time spent onsite.   Rate: £50.00 per hour Location: Stevenage Hybrid / Remote working: The role will be a hybrid position of 50 / 50 time spent onsite 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)   Test Development Engineer Job Description: The Test Equipment Hardware Design Capability group is a function home to the engineers working as part of the Test Equipment Centre of Excellence (TE CofEx), within Electronic Engineering (EE) Directorate. The EE Directorate is part of the wider Operations Directorate and forms part of Greater Engineering (Engineering, Operations and Programmes Directorate). Prepare specifications & develop...
IR35 Status:
Inside IR35

CV-Library Stevenage, UK Contractor
CL
Jun 09, 2026  
Product Cyber Security Lead
Copello are looking for Product Cyber Security Lead to join an organisation in the Buckinghamshire area on an initial 12 month contract. The Cyber Security Lead will assist with the end‑to‑end implementation of US Department of Defense (DoD) cyber security requirements for a mission‑critical product development programme. Key Responsibilities 1. Cyber Requirement Implementation * Interpret and implement US Government‑flowed cyber and information‑assurance requirements across the product lifecycle. * Ensure compliance with the following (non‑exhaustive) set of standards and contractual flows: * DoD 8140.01 (cyber workforce qualification) * NIST SP 800‑171 (CUI protection) * DI-IPSC‑82249, DISA STIGs, DI‑MGMT‑82191, DI-MISC‑80508 2. Product and Engineering Assurance * Define and maintain the programme Cyber Security Plan, including CUI handling, secure development practices and compliance evidence. * Lead cyber risk assessments, threat modelling and...
IR35 Status:
Inside IR35

CV-Library High Wycombe, Buckinghamshire Contractor
CL
Jun 20, 2026  
Technical Architect
MERITUS are recruiting for an SC Cleared Technical Architect / Solution Architect to join our client delivering secure, large-scale technology programmes within the Defence and Central Government sector. TECHNICAL ARCHITECT - 12 MONTH CONTRACT - UP TO £800 PER DAY - INSIDE IR35 - READING (2 DAYS ON-SITE) - SECTOR: DEFENCE / GOVERNMENT As a Technical Architect, you will lead the design and assurance of complex, secure systems across major government programmes. You will ensure architectural integrity across the full delivery lifecycle, working closely with engineering, delivery, and security teams to design scalable, compliant, cloud-based solutions. Lead technical design of large-scale, complex systems Define and govern solution architecture and technical designs Ensure alignment with security, performance, scalability, and compliance standards Work closely with engineering, delivery, and business stakeholders Provide technical governance, assurance, and risk evaluation Design...
IR35 Status:
Inside IR35

CV-Library Reading, Berkshire Contractor
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