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Information Technology Inside IR35 senior site engineer

9 senior site engineer jobs found

CL
May 08, 2026  
Principal Software Quality Engineer
Principal Engineer - Software Assurance £65.98 p/hr - Inside IR35 12 months Defence 1-2 days a month on site, Coventry, Barrow, Frimley or Weymouth Our complex platforms are increasingly driven by Software, assuring the quality of this and the proper integration is critical to our success. Software assurance is the ongoing process to ensure that software products meet and comply with software engineering, quality and safety standards. It is a systems engineering activity that that supports the achievement of functional and multiple non-functional requirements and is applicable to the whole engineering lifecycle from concept design to in service support. This is a growing role within our business and industry with significant potential for development and further growth. We expect the candidate to quickly develop an understanding of the development, use and control of software in our complex and unique application. Being actively involved in the decision making and problem...
IR35 Status:
Inside IR35

CV-Library United Kingdom Contractor
CL
May 01, 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 Didcot, Oxfordshire Contractor
CL
May 01, 2026  
Senior Systems Engineer
Senior Systems Engineer £87.83 per hour (Inside IR35) Mostly remote - 1-2 days per month on site, Barrow or Sheffield 12 months Senior Systems Engineer reporting to the Systems Engineering Function Lead within the Weapon Systems Engineering function. The role requires a good understanding of Model Based Systems Engineering (MBSE), Requirements management, Interface Management, Integration, and V&V stages of the Engineering Lifecycle. They should be experienced in working withal stakeholders including the internal project team, external customers, and the various design teams (S/W, Mech, Elec etc.). They should also be experienced in managing the engineering design stages: from the initial concept; design and development; testing and qualification; through to final manufacture and implementation of a new product or sub-system. Elicitation of user needs from internal/external customers. Elicitation of stakeholder needs across internal/external stakeholders. Elicitation of...
IR35 Status:
Inside IR35

CV-Library United Kingdom Contractor
CL
May 10, 2026  
IDAM Back-end Java Developer - SC Cleared
IDAM Back-end Java Developer - SC Cleared Rate: £500 - £535 a day IR35: Inside IR35 Location: Remote within the UK Duration: Initially 6 months Clearance: Active SC Clearance required You will join a global IT consultancy who are delivering digital transformation to public sector body. They are looking for a back-end Java Developer with proven IDAM (Identity and Access Management) experience. You will be part of a continuous improvement squad delivering enhancements and new features alongside BAU work (i.e. incidents and support maintenance activities). In addition, you will be involved in helping our client transform their IDAM service, re-platforming to Azure Kubernetes Service. You will have a solid understanding of modern deployment pipelines and DevOps principles. The role will require providing out of hours support (i.e. Monday to Saturday once per month). As a Senior Software Engineer with a focus on back-end development, you will play a key role in designing,...
IR35 Status:
Inside IR35

CV-Library London, UK Contractor
CL
May 10, 2026  
Calibration Engineer
A contract position Inside IR35 Hybrid working - 3 days on site. Our client, a prominent player in the automotive sector, is seeking a Calibration Engineer for a contract position. This role focuses on delivering high‑quality powertrain/software calibrations, ensuring adherence to established change-control processes, and managing cross‑functional technical interactions across the calibration lifecycle. This opportunity is ideal for someone with strong technical leadership, problem-solving capabilities, and hands-on experience with calibration development tools, with CRETA proficiency being a mandatory requirement. Key Responsibilities: Accountabilities: Release high‑quality calibrations and provide OK/NOK for release readiness. Ensure full compliance with software and calibration change‑control processes. Core Responsibilities: Execute and maintain software & calibration change‑control activities, including ownership of issue resolution and continuous improvement....
IR35 Status:
Inside IR35

CV-Library Warwickshire, UK Contractor
CL
May 09, 2026  
Embedded Software Engineer (SC Cleared)
Bare Metal Embedded Software Engineer (SC Cleared) 6 Months Hybrid - 1-2 Days per week on site in Southampton £488 per day (Inside IR35) ***Please note - To be considered for this role, you need to hold active SC Clearance and be a Sole British National*** Overview We're working with a leading organisation in the defence and aerospace sector, seeking an experienced Embedded Software Engineer to support the development of next-generation airborne communication systems as part of a major UK programme. This is an opportunity to join a highly skilled engineering team working on cutting-edge, safety-critical technology. The Role You'll be involved in the development of software solutions for embedded, real-time, and safety-critical systems, contributing across the full software lifecycle. Key Responsibilities Develop software for embedded, real-time, and safety-critical applications Write and maintain high-quality, efficient code Contribute to system design and...
IR35 Status:
Inside IR35

CV-Library Southampton, Hampshire Contractor
CL
May 08, 2026  
Senior Automation QA Engineer (Data Engineering)
A leading organisation undergoing major investment in its data and engineering capabilities is looking for a Senior Automation QA Engineer to strengthen quality across complex, distributed systems. This role sits at the intersection of software engineering and data engineering, supporting the delivery of high‑quality services and reliable data products at scale. You’ll work closely with cross‑functional teams, driving automation, improving test maturity, and ensuring the accuracy and resilience of data pipelines and backend services. This is a hands‑on role suited to someone who enjoys ownership, technical depth, and influencing engineering best practice. Essential Skills & Experience Strong background in automation testing for microservices‑based architectures. Hands‑on experience building automation frameworks using Java or similar languages. Solid experience testing REST APIs, backend services, and service‑to‑service integrations. Proven experience validating data...
IR35 Status:
Inside IR35

CV-Library Remote Contractor
CL
May 07, 2026  
Principal Systems Engineer
Principal Systems Engineer Edinburgh OR Newcastle - fully onsite 12-month contract Paying up to £70p/h (Inside IR35) Role overview: Our client is looking for an experienced Systems Engineers to contribute to the continued development of an in-service radar system, by supporting the planning and analysis of radar trials (rig-based and flight trials). Key Responsibilities: Work with large datasets from rig and flight trials, and use analytical techniques to evaluate radar performance against requirements and raise Systems Problem Reports (SPR) for detailed investigation. Apply signal processing, image processing, and object classification techniques to extract actionable insights. Investigate system anomalies using real trial data, ensuring performance meets specifications. Work collaboratively with multidisciplinary teams to develop and prototype cutting-edge defence solutions. Contribute to System Verification & Validation (V&V) activities as part of the continuous...
IR35 Status:
Inside IR35

CV-Library Edinburgh, UK Contractor
CL
Apr 17, 2026  
Functional Safety Systems Engineer
RLE International is working on behalf of their Essex based Automotive Client, who are currently looking for a Functional Safety Systems Engineer to support their team. Position Description: Rate: £29.59 (via Umbrella PAYE) – increasing to £38.38 after 12 weeks under AWR’s (Agency Worker Regulations) Our client is seeking a Functional Safety Systems Engineer to join their core team in the Essex. You will be a key player in ensuring complex, distributed technologies including powertrain, infotainment, and active safety meet the highest safety standards. Using Model-Based Systems Engineering (MBSE), you will bridge the gap between research and production, turning "what if" into "what’s next." As a key member of an exciting team leading Functional Safety activities in Product Development, this role involves working with technology subject matter experts to conduct Functional Safety analysis using efficient model-based systems engineering (MBSE / SysML) tools. Additionally, you will...
IR35 Status:
Inside IR35

CV-Library Basildon, Essex Contractor
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