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Contractor 38
Information Technology Inside IR35 London Borough Of Hounslow

38 jobs found in Hounslow

CL
Jun 26, 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 KT3, Malden, Greater London Contractor
CL
Jul 05, 2026  
Lead Software Engineer / Senior Software Engineer
Lead Software Engineer / Senior Software Engineer (Python & Django) Contract Length: 12 Months Rate: Up to £750 per day (Umbrella) IR35 Status: Inside IR35 Clearance Required: Active SC Clearance Working Pattern: Hybrid – 2 days per week onsite Locations London Manchester Birmingham Cardiff Darlington The Opportunity We are seeking an experienced Lead Software Engineer / Senior Software Engineer with strong Python and Django expertise to join a major digital transformation programme operating within a secure and highly regulated environment. This is an exciting opportunity to contribute to the design, development, and delivery of secure, scalable digital services supporting business-critical systems. Working within a modern agile delivery environment, you will play a key role in shaping technical solutions, leading engineering activities, and collaborating across multidisciplinary teams. The successful candidate will be a hands-on technical leader with a passion...
IR35 Status:
Inside IR35

CV-Library London, UK Contractor
CL
Jul 05, 2026  
Data Engineer-Must have strong GCP experience-Inside IR35
Data Engineer-Must have strong GCP experience-Inside IR35 Data Engineer (GCP) We are working with a client delivering a large-scale Data Strategy programme and are looking for a skilled Data Engineer to help shape the next generation of their data platform. You will play a key role in designing and building scalable, resilient and reusable data pipelines on Google Cloud Platform (GCP), enabling faster and more reliable data delivery across multiple product teams. This is a great opportunity for someone who combines strong technical expertise with a collaborative approach, and enjoys working in complex, enterprise-scale environments with high standards for quality and reliability. Key Responsibilities Design and build scalable, reusable data pipeline templates across multiple data domains Standardise ingestion and transformation using configuration-driven frameworks Embed data quality checks by default (schema validation, completeness, freshness, thresholds, alerting) Improve...
IR35 Status:
Inside IR35

CV-Library London, UK Contractor
CL
Jul 05, 2026  
C# .Net Developer
Senior C# / .NET Developer (Securities Lending & Repo) Role Type: 6-Month Contract Location: London (Hybrid - 3 days onsite per week) IR35 Status: Inside IR35 Role Overview A leading global financial services and asset servicing institution is seeking an experienced Senior C# / .NET Developer to join a business-critical technology team in London. This role focuses on designing, building, and supporting high-performance platforms for the firm's financing-related businesses, with a primary emphasis on Securities Lending and Repo workflows. Required Skills & Experience Core Technical Skills: Strong hands-on expertise in C# and .NET / .NET Core. Deep understanding of Object-Oriented Programming (OOP) and architectural design principles. Proven experience building and implementing REST / JSON APIs. Solid experience with relational databases (e.g., SQL Server). Familiarity with unit/integration testing and automated CI/CD pipelines. Financial Domain Knowledge...
IR35 Status:
Inside IR35

CV-Library London, UK Contractor
CL
Jul 05, 2026  
Lead Data Engineering (Hands-on Python / Databricks)
Job Title: Technical Delivery Lead - Data Engineering Lead (Hands-on Python / Databricks) Contract: 6 months - Potentially extension. Location: London Hybrid (5 days in 10 in the office) Rate: Highly competitive Status: Inside IR35 Working pattern: Full time We are seeking an experienced Technical Delivery Lead with strong expertise in Python, Databricks, and Apache Spark to lead the successful delivery of enterprise-scale data engineering initiatives.. This is a hands-on leadership role combining technical delivery, solution design, and data engineering expertise. The successful candidate will lead the delivery of a greenfield data platform while remaining actively involved in development activities. Essential Skills Proven experience in Data Engineering or Software Engineering. Previous experience in a Technical Lead, Lead Data Engineer, or Technical Delivery Lead position. Strong hands-on expertise with Python. Extensive experience with Databricks, including Workflows,...
IR35 Status:
Inside IR35

CV-Library London, UK Contractor
CL
Jul 05, 2026  
Lead Infrastructure Automation Engineer (on perm and Cloud)
Job title: Lead Infrastructure Automation Engineer (on perm and Cloud) Contract: 6 Months -possibility for extension Location: London HEX - 3 days a week Rate: Competitive day rate (Inside IR35) Working pattern: Full time Are you ready to take the lead in revolutionising infrastructure automation? Our client, a dynamic and innovative organisation, is on the lookout for a passionate Infrastructure Automation Engineer Lead - VP to spearhead their ambitious automation initiative across all infrastructure functions. This is your chance to drive significant change and enhance the efficiency of global operations! ### About the Role: As the Infrastructure Automation Engineer Lead, you will play a pivotal role in accelerating the adoption of infrastructure-as-code and automation solutions. Your expertise will help shape modern tooling strategies, ensuring scalable and repeatable automation solutions across various infrastructure domains. ### What We're Looking For: Expertise in...
IR35 Status:
Inside IR35

CV-Library London, UK Contractor
CL
Jul 05, 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 to 12 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...
IR35 Status:
Inside IR35

CV-Library London, UK Contractor
CL
Jul 05, 2026  
Application Solution Architect
Application Solution Architect 6-Month contract - Inside IR35 - up to £575 per day London based - hybrid working - 2 days a week on site Finance sector - previous experience in this sector required Overview We are seeking an experienced Application Solution Architect to lead enterprise application modernisation initiatives. This is a hands-on architecture leadership role. The successful candidate will be responsible for defining target architectures, leading application transformation programmes, and establishing architectural standards and design principles across the organisation. This is an out-and-out Solution Architect role, with a strong emphasis on application modernisation rather than infrastructure or enterprise architecture. Key Responsibilities Application Modernisation Leadership Lead the assessment and modernisation of legacy and monolithic applications. Develop application modernisation strategies, roadmaps, and target-state architectures. Drive the...
IR35 Status:
Inside IR35

CV-Library London, UK Contractor
CL
Jul 05, 2026  
Senior QAT Analyst
Senior QAT Analyst Remote £440 per day inside ir35 6 months duration Active SC clearance required We are currently seeking an experienced Senior QA Test Analyst to join a high-profile digital transformation programme within a secure government environment. This is an exciting opportunity for a quality-focused professional who thrives in complex technical environments and enjoys working closely with both technical teams and business stakeholders to deliver robust, high-quality solutions. You'll play a key role in shaping testing strategies, driving quality assurance best practices, and ensuring critical services meet both functional and non-functional requirements. What You'll Be Doing Leading the design, development and execution of comprehensive test plans and test cases. Ensuring quality is embedded throughout the software delivery lifecycle. Working with stakeholders to understand business requirements and identify quality risks. Managing, reporting and driving the...
IR35 Status:
Inside IR35

CV-Library London, UK Contractor
CL
Jul 05, 2026  
Data Engineer
Data Engineer London / remote £429 per day inside IR35 6 months duration Active SC clearance We are seeking a Senior Data Engineer to join a high-performing team delivering large-scale cloud and data transformation programmes. This is an exciting opportunity to work on complex data platforms, leveraging modern cloud technologies and best-in-class engineering practices to build scalable, secure, and high-quality data solutions. You'll play a key role in designing and developing data pipelines, integrating data from multiple sources, and helping organisations unlock the value of their data through robust engineering and architecture. What You'll Be Doing Designing, developing, and optimising enterprise-scale data pipelines. Building cloud-native data solutions using AWS and Azure. Developing and supporting ETL/ELT processes using Informatica. Working with large datasets to ensure data quality, performance, and reliability. Collaborating with architects, developers, analysts,...
IR35 Status:
Inside IR35

CV-Library London, UK Contractor
CL
Jul 04, 2026  
Product Manager
Product Manager Location: London, Bristol or Manchester | Hybrid (40% onsite) - Infrequent London travel for non-London based candidates (every 6-8 weeks) Contract: 8 months Clearance: SC required Pay rate: £550-£600 inside IR35 Overview We are looking for an experienced Product Manager to join a government digital team working on the Gov Assure programme. This role will focus on delivering digital products within an Agile environment, aligning delivery with organisational objectives and user needs. You will work as part of a multidisciplinary team, acting as a key interface across teams and stakeholders. Key Responsibilities * Lead digital product delivery across the full product lifecycle, from discovery through to continuous improvement * Work within Agile / Lean environments to deliver user-centred products * Apply user research and insight to shape product decisions and priorities * Collaborate with multidisciplinary teams across design, delivery and technical...
IR35 Status:
Inside IR35

CV-Library London, UK Contractor
CL
Jul 04, 2026  
Full Stack Software Engineer
Full Stack Software Engineer (.NET / Vue.js / Azure - Ideally some Python/AWS will be very helpful) Contract: 6 Months Initial Contract Rate: £550 per day (Inside IR35) Location: Remote with 2 days per month onsite in Leeds or London Start: ASAP Overview We're looking for an experienced Full Stack Software Engineer to join a high-profile public sector digital transformation programme. You'll be working within an agile delivery team, building and enhancing modern, cloud-native applications used by thousands of end users. This role requires strong full-stack development expertise across .NET, Vue.js and Azure, alongside previous experience delivering solutions within Government, NHS, or wider public sector environments. Key Responsibilities Design, develop and maintain scalable web applications using .NET and Vue.js Build and enhance RESTful APIs and backend services Develop responsive, accessible front-end applications Deploy and support cloud-native solutions within...
IR35 Status:
Inside IR35

CV-Library London, UK Contractor
CL
Jul 04, 2026  
Solution Architect - Data Platform & Integration
Solution Architect - Data Platforms & Integration Circa £750/day (inside IR35) Central London - 3x per week onsite We are representing a well renowned company in the midst of transformation and change who are looking for a Product Owner to join their high-performing team. As the Solutions Architect, you will be working within a Data Platforms & Integration project, focused on migrating legacy environments into a cloud framework for the purposes of modernising their European transport operations. You will be key to designing end-to-end tech & solution designs and contribute to the business' evolution of architecture patterns, standards, and best practises and, ultimately, uplift the maturity of the architecture function. We are looking for: Proven experience within a Solutions Architecture position A background within transportation, logistics, manufacturing, FMCG, retail, etc Technical expertise with AWS, Power BI, Snowflake Excellent communication skills &...
IR35 Status:
Inside IR35

CV-Library London, UK Contractor
CL
Jul 04, 2026  
Software Engineering Specialist
Role: Software engineering specialist Location: London (Alternatives that will also be accepted Cheltenham, Ipswich, or Manchester) Contract: 6 Months Day rate: £605 Inside IR35 Clearance: DV Clearance required due to nature of the project About the Role You'll work in a software-defined, CI/CD-driven environment, where infrastructure, security, and deployment are all managed as code. Our teams move fast, take ownership end-to-end, and continuously improve how we build and run platforms. What You'll Do Build and evolve automated platform capabilities for development, testing, and deployment Design and maintain CI/CD pipelines for reliable, repeatable delivery Embed Infrastructure-as-Code and eliminate manual processes Integrate security into engineering workflows (secure by design) Support teams with tools, standards, and best practices Improve automation, performance, and developer experience Collaborate across engineering, security, and operations Monitor and enhance...
IR35 Status:
Inside IR35

CV-Library London, UK Contractor
CL
Jul 04, 2026  
Solutions Architect - Digital Depots
Solution Architect - Digital Depots Circa £750/day (inside IR35) Central London - 3x per week onsite 4-6 month contract We are representing a well renowned company in the midst of transformation and change who are looking for a Solutions Architect to join their high-performing team and support a large, international programme. As the Solutions Architect, you will be working on a 'Digital Depots', an initiative focused on digitising all manual processes within engineering and operations. You will be key to designing end-to-end tech & solution designs and contribute to the business' evolution of architecture patterns, standards, and best practises and, ultimately, uplift the maturity of the architecture function. We are looking for: Proven experience within a Solutions Architecture position A background within transportation, logistics, manufacturing, FMCG, retail, etc Previous experience on digitisation projects - specifically with digitising manual operational and...
IR35 Status:
Inside IR35

CV-Library London, UK Contractor
CL
Jul 03, 2026  
Technical Programme Manager - Workstream Lead
Job title: Technical Programme Manager - Workstream Lead Contract: 6 Months Location: London (Paddington, Hybrid) IR35: Inside Sector: Retail As a Technical Programme Manager, you support complex cross team initiatives and programmes, ensuring work progresses smoothly through effective planning, coordination and removal of delivery impediments. As a programme manager you will be accountable for leading the end to end delivery of a defined workstream on the client implementation of SAP. You will build and manage the plan ensuring successful delivery across design, build, test, deployment, and stabilisation. You help identify pain points and delivery inefficiencies, support agile ways of working, and strengthen sequencing, dependency management and escalation mechanisms within and across teams. You provide practical delivery support through tracking progress, coordinating ceremonies, managing programme budgets, supporting release activities and ensuring clarity of priorities....
IR35 Status:
Inside IR35

CV-Library London, UK Contractor
CL
Jul 03, 2026  
Security Consulting Practitioner (SC Cleared)
SOC Analyst (Contract) - SC Cleared Required Location: Cheltenham (Remote - UK Based) Rate: £500 - £685 per day (Umbrella, Inside IR35) Contract Length: 3 Months SC Clearence: Due to the sensitive nature of the work, candidates must hold active UK Government Security Clearance (SC). The Opportunity We are looking for a SOC Analyst to join a high-performing Security Operations Centre (SOC) team delivering critical cyber defence capabilities within a secure client environment. This is an exciting opportunity to work on impactful projects, collaborating with experienced security professionals while gaining hands-on exposure to real-world cyber threats in a fast-paced, dynamic setting. Key Responsibilities As a SOC Analyst, you will: Monitor, triage, and respond to security alerts and incidents Investigate and analyse potential threats across multiple environments Escalate security events in line with defined processes Support continuous improvement through alert tuning and...
IR35 Status:
Inside IR35

CV-Library London, UK Contractor
CL
Jul 03, 2026  
DevOps Engineer
Azure DevOps Engineer Contract: 6 Months Initial Rate: £500/day Inside IR35 Location: Split between Leeds or London (1-2 days per month onsite) We're supporting a major public sector programme looking for an experienced Azure DevOps Engineer to join an established cloud platform team. You'll be responsible for managing and improving Azure infrastructure, CI/CD pipelines, environment management and platform security, while supporting an ongoing migration and future Azure migration activities. Key Requirements: Strong Azure infrastructure experience, including Azure Front Door, Container Apps, Key Vault, DNS and Storage Proven Infrastructure as Code expertise using Bicep (essential) and Terraform Experience with GitHub Actions and Azure DevOps pipelines Strong understanding of secure deployment practices and environment promotion strategies Experience managing containerised workloads in Azure Knowledge of identity and authentication solutions including Keycloak and OpenID...
IR35 Status:
Inside IR35

CV-Library London, UK Contractor
CL
Jul 03, 2026  
Data Scientist
Role: Data Scientist / Engineer Location: Remote / London - up to 1 day per week on-site Duration: 5 Months Day rate: £560 Inside IR35 Role Overview We are seeking an experienced Data Scientist with strong Data Engineering capabilities to support the Digital Screening programme. This role will play a key part in shaping a new digital screening service by leading exploratory analysis and supporting the development of high-quality dashboards and reporting products. You will work within a multidisciplinary Agile team, collaborating with Data Engineers, Analysts, and User-Centred Design (UCD) professionals to deliver robust, data-driven insights and scalable data solutions. Key Responsibilities Lead exploratory data analysis (EDA) to inform dashboard design and reporting outputs Define data requirements and determine appropriate dashboard content Identify and mitigate data quality risks and ensure data integrity Design, build, and maintain reusable data pipelines and datasets...
IR35 Status:
Inside IR35

CV-Library London, UK Contractor
CL
Jul 02, 2026  
Cyber Security Architect - IAM/Cloud/Infrastructure
Cyber Security Architect (Hybrid - London) - IAM/Cloud/Infrastructure Type: Contract 6+ months Rate: Up to £750 a day (Inside IR35) Location: Hybrid - 3 days per week onsite (London office) Overview An established national organisation is seeking an experienced Cyber Security Architect to help shape and safeguard its enterprise technology landscape. This is a senior, influential contract role ideal for someone who blends strategic architectural thinking with practical, delivery‑focused cyber security expertise. You will work across technology, business, and governance teams, ensuring solutions are secure, risk‑aligned, and supportive of wider organisational objectives. This role offers the opportunity to solve complex security challenges, influence senior stakeholders, and design security approaches that enable the business. Skills & Experience Required Core Competencies Strong influencing and negotiation skills. Ability to communicate clearly across written, verbal,...
IR35 Status:
Inside IR35

CV-Library London, UK Contractor
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