Contract Length: Initial 6 months (extension likely) Day Rate: £500 per day (Outside IR35)Location: Hybrid in South Wales Role OverviewWe are seeking an experienced Senior Data Engineer contractor to support and extend the Azure Databricks Lakehouse platform, ensuring the reliable delivery of new data pipelines alongside ongoing operational stability.This is a hands‑on engineering role focused on implementation, optimisation and support of Delta Lake pipelines across Bronze, Silver, Staging and Gold layers, operating within an established architectural framework. Key Responsibilities Develop and maintain data pipelines in Azure Databricks using PySpark and SQL Build incremental processing using Delta Lake and Change Data Feed Extend and maintain watermark‑driven CDC frameworks Implement and maintain Slowly Changing Dimension (SCD Type 2) logic Engineer time‑aware joins and dimensional transformations Support optimisation of Spark workloads and Delta tables Solid...

Location: Hybrid role based in South WalesContract Length: Initial 3-6 months (extension likely)Day Rate: £400 per day (Outside IR35) Role OverviewWe are seeking an experienced Power BI Specialist contractor to own enterprise semantic modelling, advanced DAX development and reporting governance.This is a hands‑on technical role focused on Power BI semantic models, not dashboard production. You will design, optimise and govern certified enterprise datasets built on the Gold data layer, enabling analysts to self‑serve confidently while protecting core business logic. Key ResponsibilitiesEnterprise Semantic Modelling Design, build and maintain enterprise Power BI semantic models using star schema and dimensional modelling best practice. Develop advanced DAX measures, calculation groups and reusable logic Ensure datasets reflect authoritative, agreed business definitions Implement time‑aware models, surrogate keys and conformed dimensions Performance & Optimisation...

Oracle Fusion Tester, £500 p/d outside IR35: We are seeking an Oracle Fusion Tester to join an exciting client's team on a contract basis. Key Responsibilities: Design of all tests for HCM, including payroll, across all phases of the Programme. This will include both manual and automated tests. Requirements coverages analysis for all test phases Successful test execution for all test phases across the programme Management of business users for PPR and UAT phases Essential Skills Required: Solid Test analysis skills with Oracle Fusion Proven functional test expertise with several Oracle Modules Evidence ability to deliver high quality and accurate test scripts and scenarios and other testing collateral Demonstrate knowledge of modern test standards and best practices Quality focus, driven to deliver a working product Experience of using Jira with x-ray test management Experience of the full cycle of implementation utilising Oracle Cloud. Hays Specialist...

Guidance & Control Software Engineer (Interception Systems)Location: North London - HybridType: Contract - Outside IR35Rate: Starting at £50 per hour DOE About the Role Our client develops advanced autonomous weapon and interception technologies designed for high-speed target engagement in contested environments. The programme centres on a vision-guided one-way aerial system capable of autonomously detecting, tracking, and intercepting manoeuvring objects. The software architecture combines real-time perception with predictive guidance and control. This role will be central to the development of the onboard flight and guidance stack, implementing estimation, tracking and control algorithms in performance-critical C++ code. The engineer will work closely with perception, simulation and hardware teams to ensure reliable terminal behaviour under real-world conditions. The Guidance & Control Software Engineer position suits an engineer with experience in missile guidance,...