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Inside IR35 software developer

40 software developer jobs found

CL
Mar 13, 2026  
Junior Software Developer
Junior Software Developer (SC Cleared) London (Hybrid) 6 Month Contract to £300/day (Inside IR35) Junior Software Developer needed with active SC Security Clearance and strong C#, .NET, SQL, skills. 6 Month Contract based in Central London (Hybrid). Start ASAP in Feb/March 2026. Hybrid Working - 2 days/week remote (WFH), and 3 days/week working on-site from the Central London office. A chance to work with a leading global IT and Digital transformation business specialising in Government projects: Experienced Software Developer / Software Engineer to join our team and work on the development of data modelling solutions Must have in-depth C#, .NET, SQL, development expertise. Experience of Agile methods, Azure DevOps, CI/CD pipeline maintenance + automation scripting, also strongly preferred. Banking / Financial Services domain experience preferred. Must hold active SC Security Clearance used on a project within the past 12 Months
IR35 Status:
Inside IR35

CV-Library London, UK Contractor
CL
Mar 13, 2026  
Software Developer (SC Cleared)
Software Developer (SC Cleared) London (Hybrid) 6 Month Contract to £700/day (Inside IR35) Software Developer needed with active SC Security Clearance and strong C#, .NET, SQL, Angular, HTML and JavaScript skills. 6 Month Contract based in Central London (Hybrid). Start ASAP in Feb/March 2026. Hybrid Working - 2 days/week remote (WFH), and 3 days/week working on-site from the Central London office. A chance to work with a leading global IT and Digital transformation business specialising in Government projects: Experienced Software Developer / Software Engineer needed to join our team working on the development of data modelling solutions. Must have in-depth C#, .NET, SQL, Angular, HTML + JavaScript development expertise. Experience of Agile methods, Azure DevOps, CI/CD pipeline maintenance + automation scripting, also strongly preferred. Banking / Financial Services domain experience preferred. Must hold active SC Security Clearance used on a project within the...
IR35 Status:
Inside IR35

CV-Library London, UK Contractor
CL
Jan 17, 2026  
PERL Software Developer
World Class Defence Organisation is currently looking to recruit a remote PERL Software Engineer subcontractor on an initial 6 month contract. Job Title:  PERL Software Engineer Rate: £77 - £84 per hour Location: Stevenage Hybrid / Remote working: This role is a remote based role – with just 1 visit to the Stevenage site per month. 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) PERL Software Engineer Job Description: The Software department are looking for a software developer with experience in the PERL programming language. We require someone who can create and update text-based templates used in Technical Publications authoring and publishing tasks. Knowledge of the Technical Publications publishing process would be an advantage but not a requirement. Assistance in updating and in some cases,...
IR35 Status:
Inside IR35

CV-Library Stevenage, UK Contractor
CL
Mar 18, 2026  
C# .NET Developer
C# .NET Developer Contract Daily Rate: £600 - £650 (inside IR35 via umbrella) Contract Length: 6 months initially Location: Hybrid Working - 2/3 days onsite per week Our client, a leading organisation in the tech sector, is seeking a talented C# .NET Developer to join their dynamic team on a contract basis. If you are passionate about software development and are eager to tackle exciting challenges, we want to hear from you! Key Responsibilities: As a C# .NET Developer, you will: Understand business requirements and design applications that meet those needs. Engage in business data analysis to inform application design and development. programme in Visual C#.NET while utilising both Oracle and SQL Server databases. Conduct unit testing and ensure quality assurance (QA) for all developed applications. Implement solutions in production and disaster recovery environments, providing support to users. Prepare and maintain technical documentation related to your projects. In...
IR35 Status:
Inside IR35

CV-Library City of London, London Contractor
CL
Mar 14, 2026  
Senior Java Developer| 6 month contract | £500–£550 | | Inside IR35 | Hybrid Swindon
Senior Java Developer | Financial Services | 6‑month contract | £500–£550 | | Inside IR35 | Hybrid Swindon A leading financial services organisation in Swindon is looking for an experienced Senior Java Developer to join an established engineering team working on high‑availability, business‑critical payment systems. This is a great opportunity for someone who enjoys complex backend engineering, secure transaction processing, and contributing to a mature agile environment. The Role You’ll be joining a team where you will be responsible for maintaining and enhancing the organisation’s core card platform. Your work will involve a blend of feature development, system optimisation, and technical problem‑solving across a highly regulated, high‑volume environment. What We’re Looking For Strong commercial experience with Java 17 and modern engineering frameworks Solid skills in SQL, Spring Boot, and Hibernate development practices Proven ability to build microservices and...
IR35 Status:
Inside IR35

CV-Library Swindon, UK Contractor
CL
Mar 12, 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
Mar 19, 2026  
CNC Machinist
CNC Machinist 9 month contract Based in Ampthill Offering £38ph Inside IR35 Do you have experience using large 5 axis machinery? Do you have experience with CAD/CAM software? 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 CNC Machinist, 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: Setting and doing tool selection, proving out and operating multiple machine tools including multi axis machining centre's Turning with various programming languages (3 to 6 axis) to produce R&D, high value 1 off or low volume production component parts Support and input to the development of machining processes and tooling/fixture design Ability of tool...
IR35 Status:
Inside IR35

CV-Library Ampthill, Bedfordshire Contractor
CL
Mar 19, 2026  
Principal Maritime Structural Engineer
Role: Prinicipal Structural Engineer Location: Gosport-onsite Duration: 6 months Rate: £600-£700/day Inside IR35: Umbrella About our Client: Our client is a leading company in defense and aerospace technology, specializing in cutting-edge research, testing, and innovation across multiple sectors. They are known for their state-of-the-art facilities and highly skilled workforce, making them a key player in advancing technology and delivering high-quality solutions. The Role As a Principal Maritime Structural Engineer, you'll be responsible for delivering work streams whilst guiding a mixed discipline engineering team. Ultimately enabling the engineering delivery of a large multi-year high profile maritime project within the Maritime defence sector. Day-to-day, you will use Finite Element Analysis (FEA) to model and assess the structural response of submarine propulsors under quasi-static and dynamic conditions. Responsibilities include developing and reviewing FEA models,...
IR35 Status:
Inside IR35

CV-Library Portsmouth, Hampshire Contractor
CL
Mar 18, 2026  
Test Equipment Hardware Engineer
Role: NPI Test Equipment Hardware Engineer Location: Cheltenham (3 day on-site. 2 remote) Duration: 12 months Rate: up to £75/hour (Umbrella only) Inside IR35 Job Description Summary As an NPI TE Hardware Engineer, you will be responsible for leading, specifying, designing & developing, Test Equipment solutions for power distribution and control programmes. You will work as part of an integrated product team to develop and implement TE Hardware for Qualification & deliver test solutions for the latest power distribution controls products. You will take an innovative approach to problem-solving, demonstrate good people leadership skills, independence, sound technical judgment and be able identify and breakdown complex problems and formulate solutions. Roles and Responsibilities Responsible for the full Test Systems life cycle - from initial requirements through to formal release and support Develop and implement TE Hardware for Qualification Execute the...
IR35 Status:
Inside IR35

CV-Library Cheltenham, Gloucestershire Contractor
CL
Mar 18, 2026  
Enterprise IT Specialist
Our premium brand Automotive client is currently recruiting for the following role: Enterprise IT Specialist - £34/hr (Inside IR35) - Warwickshire (Hybrid potential) - 13 Months (potential for yearly renewal) Opportunity: Increased regulatory demands coupled with an increasing number of markets adopting UN Regulation 154 have significantly increased the workload associated with vehicle certification. Our automotive client is looking to develop an end-to-end automated system that can meet all the requirements of Regulation 154. They are looking for an experienced IT Specialist with an eye for detail but also able to see the broader landscape. This is a challenging role that will draw on your skills of requirements management, enterprise architectures, stakeholder engagement, system validation and project management. Key Accountabilities and Responsibilities - Responsible for the end-to-end delivery of an Enterprise IT system that enables client compliance with Regulation 154...
IR35 Status:
Inside IR35

CV-Library Warwickshire, UK Contractor
CL
Mar 18, 2026  
ServiceNow Architect
Job Title: ServiceNow Architect Start Date: ASAP Max Day Rate: £550 per day IR35 Status: Inside IR35 As an Architect, you will work with multiple projects and teams to address challenges that require broad architectural thinking. Your leadership will be instrumental in mentoring team members, guiding other architects, and ensuring that our technical designs align with overarching strategic goals. Key Responsibilities - Lead the technical design of ServiceNow systems and services, justify and communicate design decisions, and assure the quality of services. - Develop and evolve governance frameworks to effectively manage delivery, utilising standards, guardrails, and principles. - Make informed decisions characterised by varying levels of risk and complexity, providing recommendations as needed. - Define and challenge strategies, patterns, standards, policies, and roadmaps, while offering proactive guidance across the organisation. - Design systems that are technically complex...
IR35 Status:
Inside IR35

CV-Library United Kingdom Contractor
CL
Mar 18, 2026  
Enterprise IT Architect
Enterprise IT Architect - (phone number removed) - £33.99/hr umbrella rate Are you ready to take your career to the next level? This is your chance to join a forward-thinking company as an Enterprise IT Architect, you will play a pivotal role in delivering innovative solutions and driving organisational success. This is a unique opportunity to be part of a challenging and rewarding project that will make a real impact on global markets. What You Will Do:  - Lead the end-to-end delivery of an enterprise IT system that ensures compliance with Regulation 154 across global markets. - Develop a comprehensive set of customer requirements, including functional and software specifications. - Create and manage a detailed project plan, covering requirements development, testing, deployment, and in-service support. - Collaborate with enterprise architects to establish functional requirements and align with broader organisational goals. - Oversee the initial deployment and production...
IR35 Status:
Inside IR35

CV-Library Gaydon, Warwick CV35, UK Contractor
CL
Mar 18, 2026  
Engineering Lead - VMWare/Openshift
Job Title: VMWare Engineering Lead Location: Sheffield OR Birmingham (3 days per week on-site) Salary/Rate: Up to £485 per day Start Date: March 2026 Job Type:10-month contract (Inside IR35) Company Introduction: We are currently recruiting for an Engineering Lead with experience in large-scale IT infrastructure & distributed systems to join our tier-1 banking client on an exciting long-term contract. Role overview The role is part of the Virtualisation Engineering Team within Distributed Compute in CTO Enterprise Services. A VMware Engineering POD Lead is responsible for guiding the development and delivery of VMware products, ensuring they meet business needs and customer expectations. Responsible for VMware Products Vision and Strategy with a focus on automation, availability, reliability, performance, and scale. Managing complex environmental issues, collaborating with wider teams, such as Operations, Applications, Engineering, Connectivity, and vendors. Job...
IR35 Status:
Inside IR35

CV-Library United Kingdom Contractor
CL
Mar 18, 2026  
Infrastructure Automation Engineer
Infrastructure Automation Engineer 2 year Contract Inside IR35 Location - Portsmouth or Corsham Overview The Infrastructure Automation Engineering Service will support the technical team responsible for the design, development, documentation, building and validation of infrastructure automation components which form part of the NSoIT(D) Platform. These automation components will primary be developed using Python3, Ansible and Bash with a focus on hardware components, specifically their various features, services, and configurations, as well as interactions with external REST/SOAP APIs and services. The team's responsibilities include: Apply complex problem solving to "reverse engineer" applications, designs and manual build instructions to create zero touch automation packages that are parameterised, dynamic and able to repeatedly and reliably deploy against these designs. Often these applications are legacy, were created without automation in mind or are otherwise resistive...
IR35 Status:
Inside IR35

CV-Library Portsmouth, Hampshire Contractor
CL
Mar 18, 2026  
Kinetic Energy Management Specialist
Our OEM Client based in Gaydon is searching for Kinetic Energy Management Specialist to join their team, Inside IR35. This is a 12-month contract position. Umbrella Pay Rate: £33.64 per hour The Opportunity: Increased regulatory demands coupled with an increasing number of markets adopting UN Regulation 154 have significantly increased the workload associated with vehicle certification. Our client is looking to develop an end-to-end automated system that can meet all the requirements of Regulation 154. We are looking for an experienced IT Specialist. with an eye for detail but also able to see the broader landscape. This is a challenging role that will draw on your skills of requirements management, enterprise architectures, stakeholder engagement, system validation and project management. Key Responsibilities: Responsible for the end-to-end delivery of an Enterprise IT system that enables the clients compliance with Regulation 154 across global markets. Deliver an enterprise...
IR35 Status:
Inside IR35

CV-Library Gaydon, Warwick CV35, UK Contractor
CL
Mar 17, 2026  
HIL Test Engineer - Steering Systems
Our premium brand Automotive client is currently recruiting for the following role: HIL Test Engineer - Steering Systems - £27.21/hr (Inside IR35) - Warwickshire - 8 Months (potential for yearly renewal) Duties: - Develop test cases to be executed within the Steering System HIL. - Implement existing JLR Vehicle test procedures in Steering HIL environment. - Operate the Steering System HIL rig. - Develop analysis methods and metrics to judge test case results. - Liaise with internal customers to satisfy test requests. - Characterise and compare different steering systems and generate reports. - Correlate Virtual models with Steering System HIL data and vehicle data. Skills: - Extensive experience in HIL testing: DSPACE, XPACK4 or similar. - Good knowledge of Vehicle Dynamics principles. - Significant experience in mechatronic systems validation and verification. - Experienced in vehicle simulation software packages such as Matlab/Simulink, IPG Carmaker or similar. - Experience in...
IR35 Status:
Inside IR35

CV-Library Warwick, UK Contractor
CL
Mar 15, 2026  
Product Owner
Job Title: Product Owner Location: Sheffield OR Birmingham (3 days per week) Salary/Rate: Up to £485 per day Start Date: March 2026 Job Type: 10-month contract (inside IR35) Company Introduction: We are currently recruiting for a Product Owner to join our client in the financial services sector. Job Responsibilities/Objectives: Lead and mentor a team of VMware engineers within the POD structure Responsible for people and performance management of the team Design, deploy, and manage VMware vSphere, VRO, vRLI, and related technologies Oversee day-to-day operations, troubleshooting, and performance tuning of the virtual environment Collaborate with cross-functional teams to deliver infrastructure solutions for business needs Drive automation initiatives using tools such as PowerCLI, Ansible, or vRealize Suite Develop and maintain technical documentation, standards, and best practices Participate in capacity planning, disaster recovery, and business continuity activities...
IR35 Status:
Inside IR35

CV-Library United Kingdom Contractor
CL
Mar 15, 2026  
Principal CE&I Protection Engineer -Nuclear
Principal CE&I Protection Engineer - Hybrid (Sellafield Project) Location: Warrington - 1 day per week on-site, 4 days WFH (with occasional site visits) £56-61/hour Inside IR35 Project: Sellafield Electrical Distribution Network Upgrade - Infrastructure Strategic Alliance The Opportunity: Join the CE&I design team delivering power systems and protection engineering for a high-profile Sellafield project. You'll play a key role in shaping the Electrical Distribution Network Upgrade through cutting-edge modelling, fault analysis, and protection system design. Key Responsibilities: Develop and maintain the project's working ETAP model Produce and review fault calculations Support protection and control system design for 11kV & 400V networks Collaborate with multidisciplinary teams to deliver high-quality designs Essential Experience: Strong knowledge of BS EN 60909 Fault Calculations Skilled in power distribution modelling software Hands-on experience with...
IR35 Status:
Inside IR35

CV-Library Warrington, Cheshire Contractor
CL
Mar 15, 2026  
Manufacturing Engineer (CNC)
Manufacturing Engineer (CNC Sliding Head) Tewkesbury (on site) Aerospace/Advanced Manufacturing Inside IR35 £50 - £55 per hour THE ROLE - Manufacturing Engineer (CNC Sliding Head) This is a fantastic opportunity to join a stand-out aerospace engineering business to support Sliding Head/Swiss Lathe Manufacturing. As a Manufacturing Engineer, you'll need to possess excellent experience in Sliding Head lathe practices and processes including programming and CAD/CAM knowledge. As an expert with Sliding Head machining, you should have knowledge of some of the following machines: Star ST38, Star SR10J, Star SW20, Citizen. DUTIES - Manufacturing Engineer (CNC Sliding Head) Authoring and approving manufacturing processes and process specifications Online and Offline programming for CNC Activities - Perform problem solving and root cause corrective actions (RCCA). Provide technical, machining task planning and authorisation. Advise and support daily shop-floor management...
IR35 Status:
Inside IR35

CV-Library Tewkesbury GL20, UK Contractor
CL
Mar 15, 2026  
Assistant Project Manager Contracts Officer
A client within the Public Sector based in Gloucestershire is currently recruiting for an Assistant Project Manager (Highways) to join their Traffic Engineering team as soon as possible. The client is offering a full-time, temporary position on an ongoing basis, initially for 6 months (with the potential to be extended or made permanent), with the ideal candidate having experience of working within a local authority highways or engineering environment. The Role Key purpose of the role: To support the delivery of traffic engineering and local highway improvement schemes that improve road safety, promote sustainable travel, and enhance the quality of life for communities across Gloucestershire. Key responsibilities will include but not be limited to: • Supporting the planning, coordination, and delivery of highway and traffic engineering projects. • Assisting with project documentation, programme monitoring, cost tracking, and reporting. • Liaising with designers,...
IR35 Status:
Inside IR35

CV-Library Gloucester, UK Contractor
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