13 of 13 Legacy Systems Jobs in Reading

join RSM UK on a 9-month FTC. This role will be accountable for planning, leading and controlling the successful transition from existing systems to new systems across a complex enterprise applications environment. The role will establish and manage the cutover strategy, detailed runbooks, readiness criteria, control approach … live with minimal disruption to business operations. Following successful cutover, the role will also establish the timetable for controlled decommissioning of legacy systems, ensuring appropriate business, technical, data, audit and operational controls are in place before retirement. Key Deliverables Cutover strategy, governance model and integrated cutover plan ...

incumbent payroll provider to a new provider. You’ll lead the payroll data workstream, ensuring accurate extraction, mapping, cleansing, validation, and migration across multiple systems including Workday, UKG, and the new payroll platform. Key Responsibilities Data migration leadership — Own the payroll data migration strategy, plans, timelines, and delivery. Data … analysis & cleansing — Perform detailed validation, reconciliation, and quality checks. Data mapping — Map data between legacy systems, UKG, Workday, and the new provider. Migration cycles — Execute mock migrations, testing cycles, and final cutover. Issue resolution — Identify and resolve data discrepancies and risks. Testing support — Support UAT, parallel runs ...

delivery processes. Led the build-out and ongoing evolution of high-traffic Ruby on Rails platforms supporting significant commercial throughput. Modernised legacy systems while ensuring uninterrupted business operations. Introduced AI-powered enhancements to improve customer journeys and internal operational efficiency. Collaborated with stakeholders across pricing, quoting ...

study teams can begin work in a ready and reliable environment. You will support programming teams during onboarding, transition from legacy systems, and ongoing operations as a first-line technical contact. You will improve lifecycle management and workflows by documenting processes, supporting validation activities, and automating practical … understand SDLC, validation, audit readiness, and compliant configuration expectations. You can communicate clearly with technical teams and business stakeholders, while tracking setup processes across systems and teams. You bring practical experience with tools such as Domino Data Lab, SAS, R, Git, Azure DevOps, VS Code, or SAS Studio. ...

programme for a central government department. The programme represents the next generation of the UKs biometric capability replacing and integrating with legacy systems and other government departments. You will be part of a Mastek team in a multi-vendor project with a shared code base. … services (EC2, ECS, EKS, API Gateway and Serverless technologies) Integration Engine tools: Apache Camel and Active MQ for messaging, web services and distributed systems Public Sector domain experience preferable #J-18808-Ljbffr ...

highly secure S/4HANA platform, you will develop custom enhancements, reports, interfaces, and CDS views, while debugging complex code to keep critical systems running smoothly. Rather than getting stuck on legacy systems, this role offers hands-on exposure to modern SAP development tools (such ...

seeks a Senior Software Engineer to join Agentic Engineering initiatives. You will leverage AI coding agents to refactor and modernise complex legacy systems, building the engineering harness and governance needed for safe AI-driven development. The role emphasizes a strong C#/.NET foundation, working with large … legacy codebases, and collaborating across teams to implement automated tests, evals and quality controls. #J-18808-Ljbffr ...

Pertemps Thames Water, is a full-time contract paying £400 daily. This role supports existing People Analytics reporting and the shift toward SuccessFactors-based systems, preserving historical output while building new capabilities. Responsibilities include gathering HR reporting requirements from stakeholders and developing interactive Story Reports. Strong expertise … complex information into actionable insights, ensuring continuity of legacy reporting and advancing analytics functions. This contract suits an analyst experienced in HR systems and modern visualisation tools. We are seeking a talented and highly motivated Data Analyst with experience of SAP Success Factors to join our dynamic ...

drill-down functionality. Support SuccessFactors data mapping, migration, validation and testing activities. Support integration of SuccessFactors data with existing Power BI reporting and legacy HR data to maintain historical trend analysis. Ensure data quality, accuracy and consistency across reporting solutions. Support reporting through SuccessFactors implementation, go-live … SuccessFactors reporting and HR data . Experience with SuccessFactors data mapping, validation, migration and testing . Experience supporting reporting across legacy HR systems and SuccessFactors . Experience with Power BI RLS . Strong understanding of data modelling, data quality and SQL database principles. Excellent analytical, problem-solving ...

Solutions Ltd in Reading seeks an experienced BizTalk/.NET integration consultant to design and implement integration solutions across portals, B2B partners and legacy systems. You will work within an onsite/offshore delivery model, participate in architecture discussions, and develop schemas, pipelines, mappings, and orchestrations while driving ...

Twelve in Reading is seeking a backend-focused engineer to tackle technical debt, refactor legacy systems, and optimize performance while delivering new features. The role combines strong PHP 8+ and Laravel expertise with hands-on MySQL optimization, Docker tooling, and modern frontend integration. Ideal candidates will balance ...

Senior Software Engineer – Agentic Engineering x4 Using AI and agentic engineering to modernise complex legacy software, and fundamentally change how engineering teams build software. What will you actually be doing? Use AI coding agents to investigate, refactor and modernise legacy codebases Design the "engineering harness" that … seriously strong software engineering foundation . You’ll ideally have deep experience in C#/.NET , alongside experience working with large, complex or legacy systems. You might have worked with: Claude Code, Cursor, GitHub Copilot, Codex or similar coding agents Agentic development or AI-assisted software engineering Automated ...

/week on-site Core Focus Backend-heavy engineering role for an established UK digital platform. Primary responsibility is tackling technical debt, refactoring legacy architecture, and optimizing application performance alongside new feature delivery. Strict Requirements PHP 8+ & Laravel: Commercial experience with Eloquent, Form Requests, Queued Jobs, and custom … Artisan commands. Codebase Refactoring: Proven history of refactoring legacy codebases and improving system maintainability rather than just executing feature tickets. MySQL Optimization: Hands-on experience with indexing strategies, query analysis, and schema design. Stack Balance: 70/30 to 50/50 backend-to-frontend focus. Tooling: Docker ...