40 jobs found in Harefield

Job Title: Snowflake Data Architect - 5 DAYS A WEEK ON-SITE Day Rate: £600-£700 per day Location: Wembley London - 5 days on-site Our client, a well-established and diversified multinational organisation, is seeking a Snowflake / Data Architect to join their team. Skills Solid experience in Data Engineering or Data Architecture, with solid experience in specialising in Snowflake platform design and governance. Data Architecture: Mastery of Data Warehouse design methodologies - Inmon, Kimball, and Data Vault 2.0 - with the judgement to apply the right pattern for the right use case. Technical Skills: Expert SQL and Python; hands-on experience with dbt (data build tool) or equivalent transformation frameworks. AWS Integration: Solid understanding of AWS IAM, S3 data lake patterns, and PrivateLink for cross-cloud data connectivity. AI Readiness: Practical experience architecting data infrastructure for AI/ML consumption - vector databases, embedding stores, and RAG pipeline...

Senior Machine Learning Engineer £60,000 | 12-month FTC | West London | Hybrid – 2 days onsite An opportunity for an experienced Machine Learning Engineer to build, deploy and operate production-grade machine learning systems at scale. This is a hands-on ML Engineering role rather than a GenAI-focused position. You'll work across the full machine learning lifecycle, from model development and training through to pipelines, deployment, serving, monitoring and ongoing optimisation. The role * Designing, training and optimising machine learning models using TensorFlow * Building and maintaining scalable ML pipelines using TFX * Deploying and serving models within production environments * Monitoring and maintaining ML systems to ensure reliability and performance * Working with large-scale structured and unstructured datasets * Contributing to experimentation and continuous model improvement * Collaborating with engineering, data and product teams to deliver...

Contract Data Architect - London Market Insurance Insurance client looking for a Contract Data Architect. You will have strong London Market experience as well as Databricks. Any experience in Acord, CDR, Lloyd's data and Mongo DB Hybrid working

IT Service Improvement Manager London - 5 days per week onsite (initially) Day rate - to be negotiated 6-month contract We are representing a well renowned company in the midst of transformation and change who are looking for an IT Service Improvement Manager to join their collaborative team. As the IT Service Improvement Manager, you will help tackle and improve a number of IT service challenges that have impacted end-user experience across areas including AV technology, printing, end-user computing, and workplace IT services. You will act as the focal point for identifying service issues, driving improvements, co-ordinating stakeholders, and ensuring quality experience for senior business leaders and end users. Key responsibilities: Conduct comprehensive assessments of current IT service issues Monitor service performance and implement continuous improvement initiatives Build relationships with senior stakeholders, executive assistants, and business leaders to understand...

Data Test Manager / QA Lead Telford (Hybrid - 2 days onsite a month) 6-month contract with extension potential Active SC Clearance required We are looking for an experienced Data Test Manager / QA Lead to provide quality assurance governance across a portfolio of complex data and technology projects. You will be responsible for ensuring testing standards, best practices, and quality processes are consistently applied throughout the project lifecycle. Key Responsibilities: Define and review Test Strategies and Test Completion Reports Provide test governance and quality assurance across multiple projects Monitor testing progress, quality metrics, risks, and issues Support and mentor Test Leads and QA Engineers Drive continuous improvement and best practice adoption Work closely with delivery teams and stakeholders to ensure successful outcomes Contribute to resource planning, recruitment, and capability developmentRequired Experience: Proven Test Manager or QA Lead experience...

Job Title: Mainframe Datacom Engineer (Spanish Speaking Preferred) Location: remote End Date: 30-Nov-26 (will be extended) Rate: £570 - £573 Role Purpose: HSBC is seeking an experienced Mainframe Datacom Engineer to support and enhance critical banking applications running within our IBM Z mainframe environment. This role will be responsible for the administration, support, optimisation, and modernisation of Broadcom Datacom databases that underpin key business and customer services. The successful candidate will work closely with application development teams, infrastructure engineers, database administrators, and regional stakeholders to ensure the stability, security, resilience, and performance of Datacom-based solutions. Given collaboration with teams across Spain and Latin America, Spanish language skills are highly desirable. This role presents an exciting opportunity to contribute to the continued evolution of HSBC's strategic mainframe estate while supporting...

Your new companyYou will be joining a secure engineering environment supporting the operation, maintenance and continuous improvement of a business-critical platform and its associated services. The role sits within an established engineering team responsible for ensuring the reliability, availability, security and performance of systems operating within a secure operational environment. Your new roleAs a DevOps Engineer, you will support platform infrastructure, deployment pipelines and live services across AWS-hosted environments. Working closely with development, support and platform teams, you will help maintain operational stability while contributing to automation, infrastructure improvements and service resilience. Key responsibilities Support AWS-hosted infrastructure and platform services. Maintain and develop Infrastructure as Code solutions using Terraform. Support Docker-based applications across development, test and production environments. Assist with CI/CD...

Our award-winning global SaaS client is seeking an experienced, hands-on Senior Data Scientist covering International (UK and CA) run-the-business analytics and data science. You will be the sole senior owner, keeping revenue visibility, regulatory reporting, and the current model suite running. This role is a 6 Month contract, Hybrid working – potential to extend. You will work closely with product, marketing, engineering, business development, compliance, and member support. This role suits an operator who takes over existing BAU and runs it end to end with minimal hands-on support, staying reliable under real deadlines. Responsibilities * Monitor the International revenue baseline across the UK and CA. Investigate anomalies and give early warning on revenue movement * Support partner monitoring and escalations: new offer setup, lookalike and recommender admin, partner click-report fixes, and partner ranking changes * Run email campaign and performance monitoring:...

I am currently working with a Charity who are seeking an Interim Head of Technology Services who will manage the support function within the organisation and help with service improvement projects. You will ensure the core central technology operations run smoothly. This role manages an IT Outsourcer and other suppliers as well as ensuring the provision of devices, telephony and local equipment is robust. You are responsible for our cybersecurity and ensuring that applications run by other teams are safe and fit for purpose. The role is for 12 months on a fixed term contract paying £65-70k. It is hybrid, based 2-3 days in Central London. Responsibilities: Deliver a high-quality IT support function through effective contract management of the IT Outsourcing company and ensuring relevant internal procedures are in place. Manage other IT supplier relationships including for telephony services, ensuring they deliver to contracted obligations and provide good value for...

Application Developer (DevOps) Location: London (Hybrid) / Remote within the UK UK Citizen status with 5 years UK residency and currently based in the UK Duration: 12 months UMBRELLA ONLY If you're a DevOps-minded Application Developer who enjoys shaping reliable platforms and improving how teams deliver, this is a great opportunity to support nationally critical work with a reputed client. You'll join a team focused on environment management, development and maintenance, and Java feature development and testing-making a real impact for public sector infrastructure. What you'll be doing: * Configure and support infrastructure, middleware, and applications using Ansible * Develop and maintain solutions using Python and AWS cloud services * Support CI/CD through GitLab pipelines * Carry out day-to-day UNIX administration and scripting using Bash * Work with RHEL operating systems to keep environments stable and performant * Contribute to development and testing using...

Payments Project Manager (SWIFT) - £850 Per Day – 6 Months – Investment Banking   Overview: A global Investment Banking organization are searching for an experienced Payments Project Manager with experience working on SWIFT. This role is to join one of the clients growing teams in London on a hybrid basis.   Role & Responsibilities: Lead end-to-end delivery of assigned medium-large IT programmes/projects from initiation through to implementation and closure. Manage project scope, schedule, budgets, resources and RAIDs in accordance with governance standards and prepare associated project artefacts. Coordinate cross-functional teams including Technology, Operations, Compliance, Risk, Information Security, Architecture and Business stakeholders, building relationships across multiple offices and regions Managing internal and external resources in a matrix organisation project structure. Work with business sponsors, PMO and HO liaison teams to build out business cases/ROI...

3rd Line Azure Cloud Engineer Location: London (hybrid: typically 2 days on-site; opportunities to work from Croydon/London area and possible moves towards Corsham/Farnborough based on project needs) Duration: 3 month initial + extensions Clearance: SC preffered / eligable candidates UMBRELLA ONLY We're hiring for a reputed client who provides shared legal services across central government. This is a hands-on, small-team role where you'll help build, run and improve cloud infrastructure-balancing project work with dependable 3rd line support. What you'll be doing: * Build and manage cloud infrastructure in Microsoft Azure (IaaS-first, with exposure to SaaS/PaaS as needed) * Provide 3rd line infrastructure support for cloud and on-premises services and business applications * Support ongoing business projects-configuring and rolling out environments across multiple Azure setups * Use strong change practice to deliver updates safely (and confidently) under tight SLA/OLA...

Financial Crime Project Manager – London – 12 months contract Job description We are recruiting for a Financial Crime Project Manager to our client, a regulated firm. This is a contract opportunity, offering an excellent day rate, employed via an Umbrella company. About the role: The Project Manager will provide dedicated leadership and delivery management across the Financial Crime Detection Capabilities Programme ensuring projects are planned, governed and delivered effectively. The role will oversee programme governance, stakeholder engagement, financial management, RAID management, benefits realisation and delivery reporting, whilst coordinating multiple internal and external stakeholders to achieve strategic Fighting Financial Crime outcomes. Key responsibilities include; Leading the planning, delivery and governance of projects within the FCDC Programme. Managing project plans, milestones, budgets, risks, issues and dependencies. Coordinating business, technology,...

Role: SFCC E-commerce Specialist Type: PERM / Fulltime Location: London, UK Working Model: Hybrid (2 or 3 days per week in office) We are seeking a senior SFCC E-Commerce Specialist to drive our digital platform's architecture. If you are an expert in Salesforce B2C Commerce Cloud and excel at bridging business requirements with technical delivery, we want you on our team. The Role: Architect & Build: Lead the design and hands-on development of scalable eCommerce solutions heavily utilizing PWA Kit and SFRA. Bridge the Gap: Act as the primary liaison between business stakeholders and tech teams, translating requirements into technical specs. Lead & Mentor: Guide developers, conduct code reviews, and configure SFCC Business Manager features.What You Need: 7-11+ years of experience in Salesforce B2C Commerce Cloud. Mandatory, deep expertise in SFRA, PWA Kit, and Business Analysis. Strong frontend skills (ISML, JavaScript, SCSS) and platform troubleshooting ability.This...

FULLY REMOTE WORKING*** We are looking for a GIS Technician to support a busy design and build team delivering GIS outputs across multiple projects. This is a data focused role, working with QGIS, ArcGIS, internal mapping tools and remote sensing data. The successful candidate will be responsible for creating, editing, validating, and maintaining spatial data to support project delivery. This role would suit someone with at least 6 months commercial GIS experience and a genuine interest in working with geospatial data. Responsibilities The GIS Technician will be involved in a range of GIS data capture editing and quality assurance tasks. * Creating, editing, and maintaining spatial datasets using QGIS, ArcGIS, and RS. * Working with large GIS datasets across multiple projects and ensuring data is clean, accurate and fit for purpose * Capturing, digitising, and updating geographic features from a range of data sources * Performing spatial data checks, validation and...

Application Support Specialist - C# / SQL - Tier 1 Bank - 6 months - Hybrid Role - Application Support Specialist Rate - £416 per day Duration - 6 months with very likely extension Location - Hybrid / Canary Wharf - 3 days per week in a Canary Wharf office Tech Stack T/SQL C# .NET OracleRole Application support responsibilities for development teams in production environments to cover all aspects such as communication with Data Centre/Help Desk staff, analysing/finding failure to reach a root cause, resolving issues by liaising with development teams, liaising with internal and external supports teams and providing explanations to our Business Clients.Tasks Troubleshooting Applications in the event of failure and implementing solutions (Code fix, SQL scripting etc), including checking Windows Servers, Databases (SQL Server or Oracle) and any other relevant environments where the Application is running. In some cases, this will involve liaising with other application...

AI Enterprise Innovation Lab Specialist — 6‑Month Contract | London (Hybrid) Our client, a global financial organisation, is urgently seeking an AI Enterprise Innovation Lab Specialist to join a high‑impact, innovation team within the Enterprise Line of Business (LoB) AI & Automation programme. This is a build‑first, fast‑moving role designed for someone who thrives in autonomy, iterates quickly, and enjoys putting working prototypes into the hands of real users. You will explore frontier AI tools, test new technologies, and convert early‑stage ideas into validated pilots that deliver measurable enterprise value. Overview of Role:- * A build‑first environment — rapid prototypes, real users, real outcomes. * Frontier tooling — hands‑on with the latest AI platforms, including LLMs, agent frameworks and automation tools. * High autonomy — an independent two‑person Innovation Lab with light‑touch direction and outcome‑focused delivery. *...

Software Engineer x2 Rate - £750 - £830 Location - London 2/3 days on site Until end of July 2027 About the Role To strengthen our AI for Science (AI4S) team, we are looking for Software Engineers with a track record in developing production-grade, data-driven software solutions. You will design, build and operate the scalable cloud infrastructure and services - including the serving of our models - that our AI systems and agentic applications run on, and you will be accountable for keeping them reliable in production. This is hands-on software and platform engineering: building robust, well-tested, high-performance systems that scientists across the client nd on every day, on modern cloud technology and the vast biomedical data sources available to us. In this role you will Design, build and operate scalable infrastructure and services that support our AI models and agentic systems across the entire software development life cycle. Own the reliability of what you build -...

Hiring: QA Engineering Specialist (12-Month Contract) DV Active Clearance Required Looking for a QA Specialist to lead quality strategies and full-lifecycle integration testing for high-priority tech initiatives. Key Responsibilities: Design and execute end-to-end test strategies & automation Lead full-lifecycle integration testing across complex workstreams Drive deep-dive defect analysis and root-cause solutions Mentor QA analysts and champion modern best practicesRequirements: Strong background in test strategy, integration, and automation Proven leadership and technical mentorship experience📩 Interested or have a recommendation? DM me or comment below! #QAEngineering #SoftwareTesting #ContractJobs #UKTech #DVCleared #TestingJobs Randstad Technologies is acting as an Employment Business in relation to this vacancy

Location: London / Hybrid - 2–3 days per week (On-site as required) Type: Contract Industry: Fashion & Retail Transformation Are you ready to shape a next-generation PLM strategy by partnering directly with the CTO Office on a high-profile transformation program? Are you looking to accelerate your career by working on one of the retail industry’s most strategic Centric PLM transformation initiatives with global stakeholder exposure? If so, our client is seeking an experienced Senior Centric PLM Solution Lead to play a key role in a strategic Product Lifecycle Management (PLM) transformation for a global fashion and retail enterprise. This is an exciting opportunity to partner with senior business and technology leaders, helping to shape the future PLM landscape while driving the adoption of modern best practices across the organisation. As the trusted Centric PLM SME, you will influence enterprise-wide product lifecycle processes and contribute to a high-profile digital...