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Inside IR35 Contractor senior systems engineer

38 senior systems engineer jobs found

CL
Jun 28, 2026  
Senior Systems Engineer
Senior Systems Engineer Location: Bristol (20% onsite / 80% remote) Duration: Initial 6-month contract with strong extension potential Rate: £60-£65 per hour (Inside IR35) Security Clearance: Active SC Clearance required The Opportunity We are seeking an experienced Senior Systems Engineer to support the development of complex defence and aerospace capabilities. This role offers the opportunity to work across the full systems engineering lifecycle, helping to shape future operational solutions through requirements engineering, systems architecture, and Model-Based Systems Engineering (MBSE) approaches. Working within a collaborative, multidisciplinary environment, you will engage with a wide range of stakeholders to understand operational needs, develop robust system architectures, and ensure requirements are effectively managed and traced throughout the engineering lifecycle. Key Responsibilities Capture, analyse and refine stakeholder needs into clear, structured...
IR35 Status:
Inside IR35

CV-Library Bristol, UK Contractor
CL
Jun 28, 2026  
Senior Systems Engineer
Senior Systems Engineer (Ref: 1674) Initial 6-month contract 2-3 days onsite in Bristol p/w £68.81ph, UMB inside IR35 SC to start - UKEO Experience capturing and analysing stakeholder needs to guide the development of service solutions suitable for future operational environments. Experience applying Model‑Based Systems Engineering (MBSE) approaches to develop service and product system architectures in response to stakeholder requirements. Experience generating Use Cases and conducting Functional Analysis to support requirements refinement and validation. Experience managing requirements and maintaining traceability throughout the engineering lifecycle. A solid understanding of the engineering lifecycle and how early technical decisions impact later development and support phases. The ability to balance competing needs and constraints using structured methods such as trade studies. Strong interpersonal and collaboration skills, with the ability to influence, communicate...
IR35 Status:
Inside IR35

CV-Library Bristol, UK Contractor
CL
Jun 25, 2026  
Senior Engineer - Mechanical - Auxiliary Systems
Join a world-renowned aerospace and defence organisation as a Senior Engineer Auxiliary in Glasgow 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 Auxiliaries to add to their talented, hardworking team in Glasgow on an initial 12 month contract. Striving for innovation and creativity you can ensure no two days will be the same. This role will be offering £40.64 per hour Umbrella (inside IR35). This is a phenomenal opportunity to not only work for a prestigious, advanced organisation, but to gain skills and knowledge you won't find anywhere else. The Role Within the role of Senior Engineer Auxiliaries you'll be responsible for: * Developing, maintaining and modifying engineering processes and procedures in assigned areas in response to...
IR35 Status:
Inside IR35

CV-Library Glasgow, UK Contractor
CL
Jun 28, 2026  
Senior Platform Engineer
Senior Platform Engineer Location: Remote (Occasional travel to their London office) Contract: Inside IR35 Day rate: Up to £800 per day Duration: 6 months Start date: ASAP Key words: Azure, Terraform, containerization, CI/CD As part of our Client's AI Engineering team, you will own the infrastructure and delivery pipelines that keep our AI-driven products reliable, scalable, and fast. You will design and maintain the cloud environments, CI/CD workflows, and observability systems that enable our engineers to ship with confidence. Key Skills: - Strong experience with Azure cloud services (compute, networking, storage, identity) - Proficiency with Infrastructure as Code (Terraform) - Solid experience building and maintaining CI/CD pipelines (GitHub Actions) - Hands-on experience with container orchestration (Kubernetes, Docker) - Proficiency in scripting and automation (Python, Bash, or similar) - Understanding of networking fundamentals, security best practices, and...
IR35 Status:
Inside IR35

CV-Library London, UK Contractor
CL
Jun 28, 2026  
Senior Engineer - Highway Structures
Senior Engineer - Structures (Highways) Location: London / Birmingham / Manchester Rate: £50-60 per hour | Inside IR35 Hours: Full-time, 37.5 hours per week, flexible hybrid working About the Role We are looking for a Senior Engineer to join a Structures Team delivering major highways projects across the UK. This role involves managing the delivery of technical outputs for multiple projects, ensuring design quality, compliance with standards, and overall technical excellence. Key Responsibilities ·Lead and deliver technical outputs for projects, including scheme investigation, detailed design, and construction supervision. ·Act as Lead Designer, reviewing and authorising design deliverables (drawings, specifications, reports, and contract documents). ·Conduct inspections, assessments, and feasibility studies of highway and bridge structures. ·Mentor and develop junior engineers, technicians, and graduates. ·Contribute to technical excellence, innovation, and value...
IR35 Status:
Inside IR35

CV-Library Birmingham, UK Contractor
CL
Jun 27, 2026  
Software and Systems Defect Coordination Engineer
Position Title: Software and Systems Defect Coordination Engineer Duration: Contract Location: Gaydon Based in West Midlands £33.88 per hour (Inside IR35) *Applicants MUST have proof of immediate, on-going and valid eligibility, to work full time, and travel within, the UK* Duties: This role, Software and systems defect coordination engineer, is responsible for overseeing the timely identification, tracking, and resolution of software and system issues across complex systems. While the role demands a high level of technical understanding, it is not hands-on in nature. The successful candidate will ensure consistent adherence to established processes, effective utilisation of issue management tools and clear and transparent reporting to senior stakeholders. Key aspects of this role involves the ability to drive and prioritise actions and process changes based on clear KPIs around defect management with stakeholders across the company. Strong skills in developing metrics,...
IR35 Status:
Inside IR35

CV-Library Warwick, Warwickshire Contractor
CL
Jun 26, 2026  
Software and Systems Test Coordination Engineer
Position Title: Software and Systems Test Coordination Engineer Duration: Contract Location: Gaydon Based in West Midlands £35.80 per hour (Inside IR35) *Applicants MUST have proof of immediate, on-going and valid eligibility, to work full time, and travel within, the UK* Duties: This role (Software and systems test coordination engineer) is responsible for overseeing the overall testing status of the EVA25 programs. While the role demands a high level of technical understanding, it is not hands-on testing role. The successful candidate will ensure consistent adherence to established processes, effective utilisation of issue management tools and clear and transparent reporting to senior stakeholders.​ Key aspects of this role involves the ability to drive and prioritise actions and process changes based on clear KPIs around testing management with stakeholders across the company. Strong skills in developing metrics, dashboards and professional presentations are...
IR35 Status:
Inside IR35

CV-Library Warwick, Warwickshire Contractor
CL
Jun 26, 2026  
Data Engineer Lead Role - Hybrid - Banking
Data Engineer Lead - Tier 1 Bank - London - 6 months Role - Data Engineer Lead Rate - £700 per day (Inside IR35) Duration - 6 months with very likely extension Location - Hybrid / Liverpool Street - 3 days per week in an office in Liverpool Street (London) Role The Data Engineer Lead is responsible for designing, building, and supporting modern data platform, with a particular focus on Databricks, cloud-based data engineering, and leading the migration of legacy Oracle systems into scalable, cloud-native environments. The role supports the organisation's data strategy especially on Finance and Regulatory domain by ensuring high-quality, reliable pipelines and data models that enable analytics, regulatory reporting, and data-driven decision-making. The post holder plays a key leadership role within the Data Engineering function, shaping architectural direction, ensuring engineering excellence, and partnering with Technology, Architecture, and Business teams across the...
IR35 Status:
Inside IR35

CV-Library City of London, London Contractor
CL
Jun 26, 2026  
Senior Infrastructure Engineer
Hybrid Working – Blackpool or Newcastle (60% onsite) Initial 2-Month Contract Up to £700 per day (Inside IR35) Active SC Clearance Required The Opportunity We are looking for an experienced Senior Infrastructure Engineer with deep expertise in Oracle Cloud Infrastructure (OCI) and Exadata to join a large-scale enterprise data platform environment. This is an opportunity to work within a highly skilled infrastructure team supporting mission-critical services, delivering cloud-based database solutions, driving automation initiatives, and providing technical leadership across complex Oracle environments. The role requires a hands-on engineer who can balance strategic technical input with day-to-day operational delivery, supporting both ongoing platform development and business-as-usual activities. What You'll Be Doing Leading the design, implementation and support of enterprise infrastructure services. Providing expert technical guidance across Oracle database and cloud technologies....
IR35 Status:
Inside IR35

CV-Library Newcastle upon Tyne, Tyne & Wear Contractor
CL
Jun 20, 2026  
Project Engineer (EC&I)
Job Description: Nuclear Project Engineer Location: Malton, North Yorkshire Contract: 12 months, Inside IR35 Overview: To provide fit for purpose engineering solutions for complex projects. To ensure that design authority standards and configuration control are applied appropriately. A Project Engineer (Senior) will provide more complex engineering solutions to higher profile projects, underpinned by a high level of technical knowledge and experience. * Identify project functional requirements and stakeholder needs for assigned project. * Manage engineering support to the project. Contribute to production of Project Execution Plans including design, safety case and commissioning strategies. * Support project optioneering process. * Develop concept design and fit for purpose engineering solution for projects. * Produce and/or approve project technical specifications. * Manage detailed design activities in accordance with design authority standards. *...
IR35 Status:
Inside IR35

CV-Library Malton, North Yorkshire Contractor
CL
Jun 20, 2026  
System Integration Lead Engineer
System Integration Lead Engineer - (phone number removed) - £35.93/hr (Umbrella Rate - Inside IR35) Step into a dynamic and rewarding career with an opportunity to become a **System Integration Lead Engineer**. This role offers the chance to work on cutting-edge projects within a forward-thinking organisation that values innovation, collaboration, and excellence. If you're passionate about engineering and want to make a tangible impact, this position could be the perfect fit for you. With competitive remuneration and the chance to work on exciting vehicle programmes, this is your chance to elevate your career in the automotive industry. What You Will Do: - Manage the integration of features and systems on test assets, ensuring seamless functionality. - Support cross-functional teams to deliver integrated software to vehicle programmes. - Lead and participate in problem-solving initiatives to address complex integration challenges. - Coordinate with multiple business functions...
IR35 Status:
Inside IR35

CV-Library Gaydon, Warwick CV35, UK Contractor
CL
Jun 19, 2026  
Cost Engineer
Date posted: May 28, 2026 Pay: £325.00-£350.00 per day (Inside IR35) Job Title: Cost Engineer Location: Bridgwater, Somerset Job Type: Contract (Long Term - Rolling) Work Pattern: Hybrid – 3 days in Office, 2 Remote We are recruiting for a Cost Engineer to join the Integrated Project Controls team on a major UK nuclear new build project. About the Role You will support the Cost and Forecasting function, maintaining accurate cost data and providing essential reporting to enable successful project delivery on one of the UK’s largest and most complex construction programmes. Key Responsibilities * Produce and maintain accurate cost and forecast data aligned with CBS/WBS structures. * Manage cost and forecast information within EcoSys and other project systems. * Prepare periodic cost reports with variance analysis and performance commentary. * Support the Trend & Change process, including risk and opportunity identification. * Provide analytical support and...
IR35 Status:
Inside IR35

CV-Library Bridgwater, Somerset 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
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 Bolton, 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 Bristol, UK Contractor
CL
May 28, 2026  
Senior Software Engineer in Test
Senior Software Engineer in Test  Certain Advantage are recruiting on behalf of our globally renowned brand for a Senior Software Engineer in Test. This is a temporary contract inside IR35 initially until March 2027 working a couple of days onsite per month in Manchester for meet ups. We’re seeking Engineers who can offer demonstrable experience in developing and testing bespoke cloud-native applications; programming with Java, Python (or another OO language) utilising quality tools like SonarQube, with proven experience of automated software testing. If you embrace quality-first coding and want to work on real projects alongside experienced engineers with iterative and agile processes, please apply! Key Responsibilities Define and implement testing for cloud systems (platform and APIs) in an agile manner Implement testing frameworks; utilising automation tools where possible. Support the investigate and resolution of issues. Work closely with the SRE team to develop...
IR35 Status:
Inside IR35

CV-Library Manchester, UK Contractor
CL
May 07, 2026  
Systems Engineer Manager
World Class Defence Organisation is currently looking to recruit a Head of FCAS Systems Design Co-Ordination ( Systems Engineer Manager ) subcontractor on an initial 6 month contract.    This position would suit a candite from the Defence / Aerospace industries and from a Systems Engineering Management background.   Rate: £80.00 per hour Location: Bristol, Stevenage or Bolton, depending on your preference.  Hybrid / Remote working: Hybrid, 3 days per week onsite (the department can offer a compressed 4 day week of Monday to Thursday) 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) Interview process: 1 stage video interview Head of FCAS Systems Design Co-Ordination Job Description:   FCAS is one of the largest, most exciting and challenging programmes within Defence – to design and deliver a Future...
IR35 Status:
Inside IR35

CV-Library Stevenage, UK Contractor
CL
May 07, 2026  
Systems Engineer Manager
World Class Defence Organisation is currently looking to recruit a Head of FCAS Systems Design Co-Ordination ( Systems Engineer Manager ) subcontractor on an initial 6 month contract.    This position would suit a candite from the Defence / Aerospace industries and from a Systems Engineering Management background.   Rate: £80.00 per hour Location: Bristol, Stevenage or Bolton, depending on your preference.  Hybrid / Remote working: Hybrid, 3 days per week onsite (the department can offer a compressed 4 day week of Monday to Thursday) 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) Interview process: 1 stage video interview Head of FCAS Systems Design Co-Ordination Job Description:   FCAS is one of the largest, most exciting and challenging programmes within Defence – to design and deliver a Future...
IR35 Status:
Inside IR35

CV-Library Bristol, UK Contractor
CL
Jun 28, 2026  
Senior Civil/Structural Engineer
Role: Senior Civil/Structural Engineer Location: Devonport(once in a month) Duration: 12 months Inside IR35: Umbrella The primary purpose of the role is to ultimately assist and support the Design Manager in the delivery of project scope. This will include the likes of the following; To undertake the delivery of civil / structural engineering work packages to the required scope, quality, schedule and cost. Responsible for managing the technical aspects of the engineering packages from identification of the need, through to handover. Support the Engineering Lead with one or more technical design packages agreeing project related objectives, working alongside design Support Teams and providing appropriate technical responses. Provide advice as per discipline. Ensure that the design documentation covers the scope of operations required by the Project Manager and is produced to agreed standards, schedule, and budget. Ensuring effective Quality Management Arrangements, operate and...
IR35 Status:
Inside IR35

CV-Library Plymouth, Devon Contractor
CL
Jun 27, 2026  
Data Engineer
Data Engineer 12 months London - remote £466 pre day inside IR35 - Umbrella only Role description We are looking for an experienced Data Engineer to join the NHS England Digital Screening programme, contributing to the development of data dashboards and reporting products for a new digital Screening service. You will build and maintain data pipelines that ingest, transform and prepare data for reporting, developing ETL processes using PySpark and platform tooling. You will work within an Agile multidisciplinary team alongside Data Scientists, Analysts and UCD professionals. This is a largely remote role. Essential skills and experience Strong experience in data pipeline engineering, ETL development and PySpark Experience with Palantir products, including the NHS Federated Data Platform (FDP) Ability to ensure data quality, reliability and performance across reporting pipelines Experience supporting testing and validation of dashboards and underlying datasets Proven...
IR35 Status:
Inside IR35

CV-Library City of London, London Contractor
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