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Contractor 176
Information Technology Harpenden

176 jobs found in Harpenden

CL
Apr 16, 2026  
SAP FI/CO Project Manager / PMO
SAP FI/CO Project Manager / PMO £500 Day Rate - Inside IR35 12 Month Contract Hybrid - Hertfordshire (with occasional international travel, c.20%) Must be eligible to work in the UK    We are supporting an organisation undergoing a significant SAP transformation programme and are looking to engage an experienced SAP FI/CO Project Manager with a strong understanding of PMO governance. This role will take ownership of delivering SAP initiatives aligned to business priorities, ensuring structured delivery across scope, timelines & budget.    Key Responsibilities: Lead end-to-end delivery of SAP projects across the full lifecycle Drive alignment with PMO governance, reporting and delivery frameworks Manage project scope, timelines, risks & budget Work closely with business stakeholders to define objectives and deliverables Develop, maintain detailed project plans, and resource allocation Provide regular reporting and updates to senior stakeholders Facilitate...
IR35 Status:
Inside IR35

CV-Library Hertfordshire, UK 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
Apr 16, 2026  
Advanced Digital Systems & Storage Engineer
Advanced Digital Systems & Storage Engineer (Band 5) Location: Hertfordshire (On-site) Sector: NHS Contract: Temporary (ASAP – April 2026) Hours: Monday–Friday, 9:00am–5:00pm (37.5 hours per week) We’re supporting a large and highly regarded NHS Trust in Hertfordshire to recruit an Advanced Digital Systems & Storage Engineer to join their Digital Infrastructure team on a temporary basis. This is an excellent opportunity to play a key role in supporting critical healthcare systems within a complex, high-availability environment—where your work will directly contribute to frontline patient care. The Role As a senior technical specialist within the Digital team, you’ll provide 2nd and 3rd line support across a broad range of infrastructure services, ensuring systems remain secure, resilient, and fully operational. You’ll act as a key escalation point, working closely with internal IT teams and external suppliers to resolve issues, maintain performance, and support...
IR35 Status:
Unknown Status

CV-Library Stevenage, Hertfordshire Contractor
CL
Apr 11, 2026  
Infrastructure Engineer
I am recruiting for an Infrastructure Engineer to be based on site in Stevenage. The role falls inside IR35 so you will be required to work through an umbrella company. You will have experience of both 2nd and 3rd Line Support. You will ensure that the IT systems provide a continuous service to all departments and associated stakeholder business. You must be able to support in closing tickets that are logged via the Service Desk. SCCM and packaging experience is required. Extensive experience managing server infrastructure in a complex, high-availability environment. Experience working with virtualisation technologies such as VMware or Hyper-V. Excellent technical knowledge of server operating systems (Windows Server, Linux) and virtualisation platforms. Strong understanding of networking principles, including TCP/IP, DNS, and DHCP, as they relate to server management. You will also be required to participate in the 24/7 IT on-call scheme in support of critical IT...
IR35 Status:
Inside IR35

CV-Library Stevenage, Hertfordshire Contractor
CL
Mar 13, 2026  
Configuration Manager
Configuration Manager Stevenage 12 Month Initial Contract   Overview of department: Configuration Management is pivotal to success in developing and delivering engineered products to our customers and frontline users. Through the controlled application and compliance of processes, we give our programmes confidence and assurance in all products that we produce.   Description of the Role Experienced Configuration professional with an ability to provide technical support to the Configuration Management team. Your ability to build networks and foster strong relationships with the team to review, develop and deliver Configuration Management processes and procedures, as well as supporting and technically coaching project Configuration Managers to deliver technical excellence contributing towards the overall success of our business programmes.   What we’re looking for A proven track record of experience within engineering organisations or operational domains, with a strong technical...
IR35 Status:
Unknown Status

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 11, 2026  
Electrical Systems Engineer / Architect
World Class Defence Organisation is currently looking to recruit an Electrical Systems Engineer / Architect subcontractor on an initial 12 month contract. Your base site can either be from the companies Bristol, Stevenage or Bolton office.  This role will be a hybrid position – 3 days per week onsite and 2 days remote.      Hourly Rate: £60 - £85 (Umbrella).      Contract Duration: 6 Months initially and then ongoing and long-term thereafter.   Missile Electronic Architect Job Description:   Electrical Architects/Engineers are involved in all aspects of missile development, from the early concept studies to series production and in-service support. It’s an excellent opportunity for someone wanting to build on their engineering experience. Responsibilities: You will be responsible for the electrical architecture and requirements for missiles and/or their associated launcher systems with duties including: Specifying/determining system electrical requirements interface definitions...
IR35 Status:
Unknown Status

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
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
Apr 17, 2026  
Technical Transition Manager
Sheer Jobs is seeking a skilled Technical Transition Manager to lead the technical elements of a major IT transition programme. The role will manage the transfer of IT systems and services from a long-term outsourced provider to a hybrid delivery model, ensuring continuity, security, and value for money. You will work closely with internal teams, incumbent and new suppliers, and business stakeholders to deliver a smooth, secure, and efficient transition. Key Responsibilities * Lead technical planning and delivery of IT service transitions, including system migrations, data transfers, and supplier onboarding. * Develop and maintain detailed transition plans, tracking milestones, dependencies, risks, and mitigation actions. * Ensure all transitions meet service level agreements, security standards, and architectural principles. * Act as technical lead for supplier and stakeholder management, supporting contract exit and service handovers. * Provide governance, risk...
IR35 Status:
Unknown Status

CV-Library Barnet, Greater London Contractor
CL
Apr 15, 2026  
Systems - IT Support
Senior Associate - Systems (IT Support) Location: West London Salary: £27,500 per annum Contract: 12-Month Fixed-Term Contract Working Model: Fully Office-Based Overview We are seeking a Senior Associate - Systems (IT Support) to join a busy banking environment on a 12-month FTC. This role will support the smooth running of the Systems function, providing first and second-line IT support to users across the business while liaising with offshore teams and third-party vendors. This is a great opportunity for someone with hands-on IT support experience looking to gain exposure within a structured and fast-paced organisation. Key Responsibilities Provide L1/L2 IT support across desktop, applications, and network issues Support system administration tasks including software installation, patching, O365, antivirus updates, and user access issues Troubleshoot and resolve issues relating to core banking applications and general IT systems Monitor and manage network connectivity...
IR35 Status:
Unknown Status

CV-Library Harrow, London Contractor
CL
Apr 15, 2026  
R & D Programmer - Senior Manager
Kinetic PLC are currently seeking a Senior Manager / R&D Programmer to join a busy Pharmaceutical Manufacturing Company, based within the Harlow, Essex area. Duration: 2 years from Start Annual Salary: approx £56,(Apply online only)% Remote - will access systems via your own laptop - VDI connection) 25 Days Annual Leave (pro rata plus Bank Holidays) Position Summary: The Clinical Programming (Contractor) is responsible for providing comprehensive programming support, including managing the timely and accurate execution of programming components of clinical trials. The clinical programming contractor independently manages completed projects that involve global tasks, or cross functional teams The role may require providing inputs to design and analysis, and reporting the results of clinical trials, including programming rules and mocked T/L/G. In addition, providing programming support for publication for our marketed drugs. Essential Duties & Responsibilities:...
IR35 Status:
Unknown Status

CV-Library Harlow, Essex Contractor
CL
Apr 16, 2026  
Senior Developer
Senior Developer Summer-Browning Associates is currently assisting our Central Government client in seeking a Senior Developer for an initial six-month assignment. Location: Milton Keynes Essential Skills: The ideal candidate will hold active SC Clearance and have a proven background in software engineering, demonstrating the following skills and experience: Proficiency in C# and .NET Core API development. Extensive SQL Server skills, including stored procedures and optimisation. Experience designing backend architecture within secure or modern API‑driven environments. Experience with CI/CD pipelines (GitHub Actions or Azure DevOps). Familiarity with clean architecture or domain‑driven design. Understanding of API testing and integration testability. React, TypeScript, and Javascript highly desired Comprehensive understanding of Agile methodologies and security best practices. Familiarity with secure environments in the public sector or defence is highly advantageousTo...
IR35 Status:
Unknown Status

CV-Library Milton Keynes, Buckinghamshire Contractor
CL
Apr 18, 2026  
Quality Assurance Specialist
Our client is a leading biopharmaceutical company seeking a talented and motivated individual to join their team as a Quality Assurance Specialist. With many of their technical services accredited in accordance with GxP standards, they are looking for a Quality Specialist to support and coordinate Quality Management Systems, ensuring processes are compliant, effective, and continuously improved. You will join a dynamic team of Quality Assurance professionals and be responsible for reviewing, establishing, and maintaining processes and procedures that uphold the Quality Management System. A key part of the role will involve preparing, reviewing, and approving batch documentation to enable the timely release of products. Additional responsibilities include handling complaints, proposing effective Corrective and Preventative Actions (CAPAs), and tracking these through to timely closure. Applications are welcome from candidates who have: * Ideally 1–2 years’ experience in a...
IR35 Status:
Unknown Status

CV-Library Slough, Berkshire Contractor
CL
Apr 16, 2026  
Automation Developer
Automation Developer Power Automate Outside IR35 Contract | Hybrid | 2 days per week on site Our client is undergoing a large-scale transformation programme and is seeking an experienced Automation Developer to join a high-profile delivery team. You will be responsible for designing, developing and delivering automation solutions across a prioritised RPA workstream. You will play a key role in the full automation lifecycle, from reviewing process requirements and producing solution designs through to testing, deployment, handover and post-go-live support. There is also an opportunity to contribute to the integration of broader intelligent automation technologies, including Machine Learning, OCR and NLP, within an established governance framework. Key responsibilities * Design, develop and deliver end-to-end automation solutions * Review Process Definition Documents (PDDs) and produce Solution Design Documents (SDDs) * Develop Power Automate cloud workflows, RPA workflows and...
IR35 Status:
Outside IR35

CV-Library EC2, Barbican, Greater London Contractor
CL
Apr 11, 2026  
Senior Agentic AI Consultant – Python / Full-Stack (London, Hybrid)
Senior Agentic AI Consultant – Python / Full-Stack (London, Hybrid) We’re looking for a Senior Agentic AI Consultant to join our London-based team on a hybrid basis. This is a hands-on role for someone who thrives on building, scaling, and deploying AI solutions end-to-end. What you’ll do: * Design and develop agentic AI systems using Python. * Build full-stack applications to integrate AI models into real-world workflows. * Collaborate with clients and internal teams to deliver high-impact AI solutions. * Mentor and guide junior engineers on best practices What we’re looking for: * Strong Python expertise and experience with AI/ML frameworks. * Full-stack development experience (frontend + backend). * Proven track record of delivering AI projects from concept to deployment. * Senior-level problem-solving skills and ability to work independently. Why join us: * Work on cutting-edge AI projects. * Hybrid London-based environment (flexible remote...
IR35 Status:
Unknown Status

CV-Library EC4, Old Bailey, Greater London Contractor
CL
Apr 08, 2026  
Senior Data Engineer
Senior Data Engineer – (Tick data, Time-Series; kdb+ / Q ) 3-6 months initially. London 3 days onsite   Are you a Data Engineer with a background in systematic trading who has worked with granular tick market data? Have you built pipelines to allow tick data to be ingested into a time series tech stack utilising kdb+ and Q? If so keep reading!   Certain Advantage are recruiting on behalf of our London based trading client for a Data Engineer to focus on building a scalable data platform for algorithmic trading.   You’ll Identify and implement solutions for Quants and Traders, providing data that will be used to improve strategies performance and produce clients TCA, pre- and post- trade analytics.   Your Project Work: Identify and implement solutions to provide data that will be used to improve strategies performance and produce clients TCA, pre- and post- trade analytics. Work with business Stakeholders to build new and maintain existing real-time and historical data services and...
IR35 Status:
Unknown Status

CV-Library Central London, London WC2N 5DU, UK Contractor
CL
Apr 18, 2026  
DevOps Engineer - Active SC, Linux, AWS
DevOps Engineer - Active SC, Linux, AWS Up to £425 per day - Inside IR35 London / Primarily Remote 6 months My client is an instantly recognisable consultancy who require 2 DevOps Engineers with Active SC Clearance for an end client within the Public Sector. Key Requirements: Proven commercial experience working as a DevOps Engineer within the Public Sector. Active SC Clearance. Strong experience with Linux (RHEL/Ubuntu), AWS, and high‑availability Kubernetes environments (EKS/RKE) including load balancing and multi‑site failover. Proficient in containerisation and orchestration using Docker, Kubernetes, and Helm. Skilled in IaC and automation with Terraform, Ansible, and supporting cloud‑native platform modernisation. Hands‑on with CI/CD pipelines (GitLab CI), Git version control, and automated delivery practices. Experienced with monitoring and observability tooling such as Prometheus and Grafana. Knowledge of data and streaming technologies including Kafka, MongoDB, MySQL,...
IR35 Status:
Inside IR35

CV-Library London, UK Contractor
CL
Apr 18, 2026  
Java Full Stack Developer
Java Full Stack Developer Location: London - Hybrid – 3 days per week onsite Start Date: ASAP Contract Rate: TBC, likely in the region of £500 per day inside IR35 Duration: 6 months initially Role Overview Our client is seeking a Senior Java Full Stack Developer to help design, build, and support complex Java/Python applications within a distributed, microservices‑driven environment. You’ll work across global teams, contribute to an AI‑focused engineering roadmap, and provide critical L3 production support to ensure stability and performance. Key Responsibilities * Develop and maintain Java & Python applications, microservices, and distributed systems. * Work with global product, UX, and engineering teams to deliver high‑quality solutions. * Contribute across the full SDLC, ensuring scalable, secure, test‑driven delivery. * Support L3 production incident resolution, root‑cause analysis, and preventive fixes. * Perform code reviews, enforce best practices,...
IR35 Status:
Inside IR35

CV-Library London, UK Contractor
CL
Apr 18, 2026  
Python Software Engineer
Job Title: Python Developer Location: London, UK- hybrid onsite role 3 days per week Duration: Two year with extensions (PAYE position inside IR35) Pay: £80-90 per hour (depending on experience) Overview: In order to support significant and sustainable growth in the Structured Notes (SN) and Structured Products (SP) businesses, Equity Linked Technology is building a highly automated, fully STP system solving front-to-back business needs. The system will help automate pre-trade and post-trade activities including pricing, quoting, booking, client connectivity, workflow, sales/trader blotters, lifecycle management, documentation/confirms generation, and Treasury. This is a unique and exciting opportunity for a dynamic, enterprising mid-level developer to join the fastest growing area in Equities Derivatives Technology and contribute to the continuing buildout of technology and process automation solutions to enable significant SN and SP business growth. The successful candidate...
IR35 Status:
Inside IR35

CV-Library London, UK Contractor
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