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Contractor 24
Information Technology Inside IR35 Brentford

24 jobs found in Brentford

CL
May 16, 2026  
Contract C# Software Engineer
Contract C# Software Engineer Near Wimbledon   6-month contract Software Engineer role developing C# Windows applications that interface with hardware.  This role is inside IR35 and requires on-site work 3 days per week (full time for the first few weeks). C# Software Engineer skills required - Good analytical skills and experience of code and design review for large projects. Experience of multi-threaded and distributed applications, preferably with an understanding network of protocols. Strong Experience in developing Windows desktop applications in C# Interfacing with hardware/physical products .NET environment, Windows Forms, TCP/IP & UDP protocols  Please apply or call for more information
IR35 Status:
Inside IR35

CV-Library Wimbledon, London, UK Contractor
CL
May 16, 2026  
Solution Architect - Government Aligned Frameworks
Solution Architect - Government Aligned Frameworks Up to £690 per day - Inside IR35 London / Remote 6 months My client is an instantly recognisable consultancy who require a Solution Architect with Financial Services & Banking domain experience and expert knowledge of Government Aligned Frameworks for a business critical programme. Key Requirements: Proven commercial experience working as a Solution Architect within the Banking & Financial Services domain Strong experience with government‑aligned frameworks i.e. Open Banking, CMA, PSD2, (url removed) standards. Proven delivery with 3rd‑party vendors across Product Accounting, Risk Engines, Financial Crime, and Core Banking platforms. Expert in microservices, APIs, and integration patterns, including Payment Initiation Services across BACS, SEPA, Faster Payments, etc. Broad expertise in general account and infrastructure technologies such as legacy DC and cloud i.e. compute, networking, storage, databases, HA/DR, IAM...
IR35 Status:
Inside IR35

CV-Library London, UK Contractor
CL
May 14, 2026  
Enterprise Architect - DV Cleared
Enterprise Architect / Service Design Specialist Contract: 12 months | IR35: Inside IR35 Location: London or Gloucester My client, a leading technology company ,is looking for an experienced Enterprise Architect / Service Design Specialist to support a high‑profile defence programme. Key Responsibilities Deliver enterprise architecture and service design for complex, secure environments Produce production‑ready HLD and LLD architecture artefacts Lead workshops and design activities, shaping end‑to‑end digital services Model architectures and services using Sparx Enterprise Architect Apply user research and data to improve service journeys and outcomes Support security assurance, risk and accreditation activities Mentor and support other architects and service designersEssential Skills & Experience Proven Enterprise Architect experience in complex organisations Experience in Defence sector DV cleared Strong TOGAF expertise Hands‑on with Sparx EA Strong modelling skills:...
IR35 Status:
Inside IR35

CV-Library London, UK Contractor
CL
May 14, 2026  
Junior Data Engineer
Junior Data Engineer - Public Sector Contract: Initial 7 months (extension possible) Rate: £310 per day, Inside IR35 Location: Remote with travel to Waterloo (2-3 days per month) Security Clearance: SC‑eligible (5 years UK residency required) I am working with a key consultancy delivering a major UK public sector programme and are looking for a Junior Data Engineer / Scientist to join a mixed delivery team building and operating secure, reliable data platforms that support critical public services.This role is designed for someone early in their data career who wants to develop strong engineering fundamentals in a real production environment. The role - a junior, generalist data engineering position. This is an engineering‑led role, not a specialist or senior position. The team is ideally looking for a generalist in their first few years within data engineering or data science, who is building breadth across data platforms, pipelines and operations. You'll focus on:...
IR35 Status:
Inside IR35

CV-Library London, UK Contractor
CL
May 13, 2026  
Senior Full Stack Developer (React & C#.NET)
Job Title: Senior Full Stack Developer (React & C#.NET) Contract Length: 12 Months Location: London - 3 Days a week Daily Rate: Circa £650/Day (Inside IR35) About the Role Join our dynamic team as a Senior Full Stack Developer, where your expertise in React JS and C# .NET Core will shine! We are looking for a tech-savvy professional with a passion for building scalable applications within the financial sector. This is an exciting opportunity to work with cloud-native architectures and cutting-edge technologies. If you thrive in a collaborative environment and are eager to make an impact, we want to hear from you! Technical Skills Front-end: Strong proficiency in React.js, JavaScript/TypeScript, Redux/RTK, and modern UI patterns, develop framework is essential Back-end: Expertise in C# .NET Core, REST APIs, and microservices-based development is essential Python (pyspark): Experience with data pipelines and analytics is a plus. Power BI: Familiarity with developing...
IR35 Status:
Inside IR35

CV-Library London, UK 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 16, 2026  
Senior Project Manager - London Markets
Location: London (Hybrid) Day Rate: £800-£850 per day (Inside IR35 Umbrella assignment rate) Role Overview Our client is undertaking a significant European growth and market expansion programme. We are seeking an experienced Interim Project Manager to support the Programme Manager in delivering key projects that enable this strategy across agreed European locations. This is a hands‑on delivery role requiring strong London Market experience, with exposure to international expansion, regulatory change, and cross‑border operating model delivery. Key Responsibilities Support the Programme Manager in delivering workstreams aligned to the European growth strategy Own end‑to‑end project delivery across multiple concurrent initiatives Define and manage project scope, objectives, milestones, dependencies and success metrics Create and maintain robust project and programme plans Manage resource allocation across the portfolio, proactively addressing capacity constraints Lead budget...
IR35 Status:
Inside IR35

CV-Library City of London, London Contractor
CL
May 13, 2026  
Technical Migration Lead - JIRA/Atlassian
Technical Migration Lead Location: Canary Wharf, Greater London - 3 days onsite per week is required Contract Contract Length: 8 months initially Daily Rate: £800 - £850 (inside IR35 via umbrella) About Us: Our client is a leading organisation in the financial services sector, committed to delivering innovative technology solutions. They are currently seeking a dynamic and experienced Technical Migration Lead to drive critical Jira Cloud migrations across their Finance & Risk Technology teams. Role Summary: As the Technical Migration Lead, you will orchestrate a dedicated Jira Cloud migration lane to support the execution of regulatory initiatives. You will leverage your infrastructure technology expertise to streamline processes, resolve issues, and consolidate multiple Jira Data centre instances into a single, governed Jira Cloud standard. Key Responsibilities: Lead the end-to-end Jira Cloud migration process, managing wave planning, capacity management, and...
IR35 Status:
Inside IR35

CV-Library City of London, London Contractor
CL
May 13, 2026  
Salesforce Admin
Salesforce Administrator (Contract – 6 Months) Location: Windsor, UK Working Pattern: Hybrid – on-site once per week initially Contract Length: 6 months initially Start Date: 18 May 2026 Day Rate: TBC, inside IR35 (likely in the region of £350 - £400 DOE) Our client is seeking an experienced Salesforce Administrator to support and enhance a live Salesforce platform in a complex business environment. This role focuses on declarative configuration, platform stability, data quality, and day-to-day operational support, working closely with Salesforce Engineers, Product, and Operations teams. This is an individual contributor role, ideal for a proactive administrator who enjoys ownership, problem-solving, and continuous improvement. Key Responsibilities * Configure, maintain, and administer the Salesforce platform using declarative tools to support business processes and customer journeys * Translate business requirements into scalable Salesforce configuration, including...
IR35 Status:
Inside IR35

CV-Library Slough, Berkshire Contractor
CL
May 16, 2026  
EndPoint Engineer
Endpoint Engineer (Contract) Location: Hemel Hempstead (Onsite) Rate: £600-£700 per day (Inside IR35) Clearance: MOD DV required Role Overview Lead the day-to-day technical operations of the Windows/Endpoint team, providing subject matter expertise across endpoint security and infrastructure. The role combines hands-on engineering, team leadership, and strategic input to support operational delivery within a secure, enterprise environment. Key Responsibilities Lead and mentor a team of engineers, developing SME capability and aligning skills with digital strategy Support project delivery: solution design, estimation, implementation, and technical validation Manage and respond to incidents in line with SLAs, including escalation where required Collaborate with architects and designers to recommend and validate technical solutions Contribute to pre-sales activities and cost/effort estimation Maintain accurate documentation (operational procedures, user guides, project...
IR35 Status:
Inside IR35

CV-Library Hemel Hempstead, Hertfordshire Contractor
CL
May 14, 2026  
EndPoint Engineer
Endpoint Engineer (Contract) Location: Hemel Hempstead (Onsite) Rate: £600-£700 per day (Inside IR35) Clearance: MOD DV required Role Overview Lead the day-to-day technical operations of the Windows/Endpoint team, providing subject matter expertise across endpoint security and infrastructure. The role combines hands-on engineering, team leadership, and strategic input to support operational delivery within a secure, enterprise environment. Key Responsibilities Lead and mentor a team of engineers, developing SME capability and aligning skills with digital strategy Support project delivery: solution design, estimation, implementation, and technical validation Manage and respond to incidents in line with SLAs, including escalation where required Collaborate with architects and designers to recommend and validate technical solutions Contribute to pre-sales activities and cost/effort estimation Maintain accurate documentation (operational procedures, user guides, project...
IR35 Status:
Inside IR35

CV-Library Hemel Hempstead, Hertfordshire Contractor
CL
May 14, 2026  
Senior Category Manager-IT Services
Role: Senior Category Manager-IT Services Location: Farnborough(3 days/week) Duration: 6 months Rate: competitive Inside IR35: Umbrella IT & Tech The IT category has a spend of circa £100m across key categories including Software, Hardware, Networks and IT Services. This role is responsible for the IT Services Category. Key Responsibilities Build and maintain strategic relationships with senior stakeholders, driving early engagement to influence business planning and ensure alignment with organisational priorities Own, develop and execute category strategies for IT Services, using market insights and data to challenge existing approaches and maximize value Lead complex sourcing activity, including the design of sourcing strategies, working with the business to support business case development, competitive tenders, and negotiation of high-complexity contracts Identify and manage category-specific risks, including information security, IR35, supply resilience,...
IR35 Status:
Inside IR35

CV-Library Farnborough, Hampshire Contractor
CL
May 15, 2026  
Business Architect - Digital Transformation - SC Required
Location: Reading (mostly onsite) Duration: 6 month contract Rate: £107ph UMB (Inside IR35) Active SC Required! Role details: Our client, a prominent company in the Defence & Security sector, is currently seeking a skilled Business Architect to join their team on a contract basis. This role is critical for a major digital transformation programme within a new start-up organisation. Key Responsibilities: Leadership & Direction Define and implement the approach for requirements gathering, analysis, and documentation across multiple workstreams. Set up a new Business Analysis Team, including recruitment, setting the standards and working practices, overseeing quality. Lead and mentor a team of Business Analysts with varying levels of experience, fostering growth and capability development. Alongside the Product Owner, set the vision for the digital solution. Assure the output of the BA team or around BAs and assurance of the solution produced by our Managed Service...
IR35 Status:
Inside IR35

CV-Library Reading, Berkshire Contractor
CL
May 13, 2026  
Supplier Quality Engineer
Supplier Quality Engineer 6 month contract Based in Stevenage - hybrid Offering £45ph Inside IR35 Do you have experience with AS9100 standards? Do you have quality experience in Manufacturing and Supply Chain environments? Do you want to work with an industry-leading company? If your answer to these is yes, then this could be the role for you! As the Supplier Quality Engineer, you will be working alongside a market-leading Defence and Aerospace company who are constantly growing and developing. They are always looking to bring on new talents such as yourself and further develop your skills to enable you to grow within the company and industry. You will be involved in: Complete scheduled Quality Assurance audits at suppliers using standardised tools Conduct thorough verification/inspection of products to ensure they meet the required quality standards Identify and document any non-conformities in the manufacturing process and deviations from the product specifications...
IR35 Status:
Inside IR35

CV-Library Stevenage, Hertfordshire Contractor
CL
Apr 17, 2026  
Embedded DSP SW Engineer – Software Defined Radio Datalink
World Class Defence Organisation based in Stevenage, Hertfordshire is currently looking to recruit an Embedded DSP Software Engineer – Software Defined Radio Datalink subcontractor on an initial 6 month contract.     This role would suit a candidate who comes from a mobile communications industry or from the aerospace / defence field. Other industries will be considered too.   Rate: £70 per hour Overtime Rate: Hours worked over the standard 37 hours per week, will be paid at ‘time and a quarter’ Location: Stevenage Hybrid / Remote working: The role will based onsite.  A compressed 4-Day week of Monday to Thursday is possible Duration: 6 Months with very likely extension. Contracts are often ongoing and long-term thereafter.  IR35 status: Inside IR35 (Umbrella) Interview process: One stage video interview process   Embedded DSP Software Engineer – Software Defined Radio Datalink Job Description:   Join our growing Software team in Stevenage, working as part of a dynamic team to...
IR35 Status:
Inside IR35

CV-Library Stevenage, UK Contractor
CL
Feb 25, 2026  
SAP Security Support Administrator
World Class Defence Organisation is currently looking to recruit a SAP Security Support Administrator Subcontractor on an initial 12 month contract. The role can be based from either the companies Stevenage or Bolton site, depending on your preference.  The role will be predominantly working from home.   Rate: £22.63ph (Umbrella) Overtime Rate: Hours worked over the standard 37 hours per week, will be paid at ‘time and a quarter’ Location: Stevenage or Bolton depending on your preference   Hybrid / Remote working: The role will be predominantly working from home… one day per week onsite.  Also, a condensed 4 day working week of Monday to Thursday is OK too. Duration: 12 Months with very likely extension. Contracts are often ongoing and long-term thereafter.  IR35 status: Inside IR35 (Umbrella)   SAP Security Support Administrator Job Description: The SAP Security Support Administrator plays a key role in supporting documentation, refinement and execution of General IT Controls...
IR35 Status:
Inside IR35

CV-Library Stevenage, UK Contractor
CL
Feb 06, 2026  
Embedded Software V&V Engineer
World Class Defence Organisation is currently looking to recruit 5x Embedded Software V&V Engineer subcontractors on an initial 6 month contract.  Skills in C, C++ or ADA are beneficial.  A defence or aerospace industry background would also be great.   Rate: £70.00 per hour Location: Stevenage or Bristol, depending on your preference. Hybrid / Remote working: Full time on site (occasional work from home day) (The company are happy with a 4 day week) 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   Embedded Software V&V Engineer Job Description:   The department create the complex, highly reliable real-time software that powers missile systems and their components, ensuring that they provide the performance and functionality our users require when they...
IR35 Status:
Inside IR35

CV-Library Stevenage, UK Contractor
CL
May 16, 2026  
Lead Firmware Engineer
Lead Firmware Engineer Basildon 6-Month Contract Paying up to £74p/h (Inside IR35) Key Responsibilities Firmware requirements capture and management. FPGA design and analysis. Production of documentation for other engineers and evidence for design reviews. Development of FPGA test and FPGA integration plans. Perform system integration work with PCB designers and embedded software engineers. Support all firmware designs through the company's firmware process - training will be given. Modification of existing firmware designs and test benches. Essential Skills & Experience Using FPGA technologies, especially from either Xilinx, Microsemi (Actel) or Lattice and their tools. Advanced verification techniques using either VHDL or System Verilog/ UVM. Specifying complex timing and area constraints for efficient FPGA place and route. Ability to analyse system-level requirements and derive detailed Firmware requirements. A methodical approach to the full firmware design...
IR35 Status:
Inside IR35

CV-Library Basildon, Essex 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
CL
May 17, 2026  
Workplace Integration Engineer
Workplace Integration Engineer 6 months - initially Location: Basingtoke DV clearance required £650 inside IR35 - Umbrella only Description: Possessing excellent scripting skills in Powershell and Python, this role will be responsible for taking product configuration design, and packaging it - enabling the re-deployment of one or more software packages in an automated and verifiable way. The successful candidate will work as part of a multi skilled agile team, where teamwork is paramount. The role will be challenging and varied, where cross training is expected and challenges shared. The successful candidate will have the responsibility of owning the delivery of a work package from design, through prototyping, ensuring the work package meets functional and non-functional requirements. The skills necessary to troubleshoot and problem solve. The candidate will script repeatable unit tests to exercise functionality, which will account for desired and undesired outcomes. The...
IR35 Status:
Inside IR35

CV-Library Basingstoke, Hampshire Contractor
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