1 to 25 of 188 Legacy Systems Jobs in England

Programme Manager – Housing Systems Transformation Location: Hybrid – Portsmouth Duration: April 2026 – March 2028 Working Pattern: 4 days per week (8.00 am – 5.00 pm) Rate: £350 – £400 per day PAYE A major housing provider in Portsmouth is embarking on a significant transformation programme, replacing multiple legacy systems … reporting Lead multi-workstream delivery covering system configuration, integrations and environment management Oversee complex data cleansing and migration from multiple legacy housing systems Manage integrations across housing, repairs, finance, community safety and corporate platforms Lead testing cycles including System Integration Testing and User Acceptance Testing Drive organisational ...

Systems Accountant - Process & Systems Transformation Day Rate: £500 - 700 DOE (umbrella) Contract Length: 12 months Location: Harlow (Hybrid - minimum 3 days onsite) Clearance: SC A leading organisation within the defence sector is seeking an experienced Systems Accountant to support a major finance systems transformation programme. This … high-profile change initiative. You'll join a dedicated Process & Transformation team, supporting data migration, ensuring system integrity, and strengthening the organisation's financial systems landscape. This role offers the chance to influence critical systems change and collaborate across multiple business areas. Key Responsibilities Support data migration from ...

business needs require. Core areas of depth may include one or more of: Web/Front-end engineering Java/AWS backend and distributed systems React Native Android (Kotlin) iOS (Swift) Successful candidates demonstrate deep expertise in at least one of these areas while maintaining practical experience and willingness … across others. This role suits engineers who are highly autonomous, delivery-focused, and capable of owning technical design and execution for complex features and systems, while contributing to team growth and technical direction. What you’ll do: Engineering delivery & technical ownership Design, build, and deliver high-quality software across ...

modernisation initiatives. You will collaborate closely with internal teams to deliver new features, improve performance, and support the transition of legacy systems into more scalable, maintainable solutions.This is a hands-on role suited to someone who enjoys variety: maintaining what works today, and shaping the architecture … tomorrow. Key Responsibilities Develop, maintain, and enhance PHP-based applications, including a core legacy product. Support the evolution of legacy systems by modernising codebases, improving structure, and raising software quality. Work across the full development lifecycle: requirements, build, testing, deployment, and ongoing support. Collaborate with ...

modernisation initiatives. You will collaborate closely with internal teams to deliver new features, improve performance, and support the transition of legacy systems into more scalable, maintainable solutions.This is a hands-on role suited to someone who enjoys variety: maintaining what works today, and shaping the architecture … tomorrow. Key Responsibilities Develop, maintain, and enhance PHP-based applications, including a core legacy product. Support the evolution of legacy systems by modernising codebases, improving structure, and raising software quality. Work across the full development lifecycle: requirements, build, testing, deployment, and ongoing support. Collaborate with ...

Senior Software/Data Platform Engineer to help evolve a large-scale financial data platform. The environment includes both long-standing enterprise systems and modern AWS cloud services. The platform handles high-volume structured data and supports internal systems and customer-facing products.A big part of the role … involves working with large SQL Server environments, so strong SQL skills are essential. You'll help modernise core systems, improve performance and reliability, and build scalable backend and data services.This role suits engineers who are comfortable working across legacy and modern architectures and who have strong experience ...

great if you also have: Experience with DL1/IMS technology Knowledge of Easytrieve Plus Knowledge of Assembler Experience working on legacy systems Experience of ensuring stability of legacy systems during modernisation Understanding of Retail and Supply Chain systems Experience managing small teams ...

across functional workstreams, ensuring data meets architectural, compliance, and governance standards. Key Responsibilities Extract and prepare HR and employee data from legacy systems for migration into Workday Transform, cleanse, and validate datasets to meet agreed standards and Workday requirements Conduct data gap analysis and support remediation … delivery Experience/Knowledge needed: Experience of working with the HR function Excellent abilities when it comes to extracting data from legacy systems, cleansing data, validating data, transforming data and preparing to hand over to the IMPL Data lead. Demonstrable HR data architecture experience Identify and analyse ...

across functional workstreams, ensuring data meets architectural, compliance, and governance standards. Key Responsibilities Extract and prepare HR and employee data from legacy systems for migration into Workday Transform, cleanse, and validate datasets to meet agreed standards and Workday requirements Conduct data gap analysis and support remediation … delivery Experience/Knowledge needed: Experience of working with the HR function Excellent abilities when it comes to extracting data from legacy systems, cleansing data, validating data, transforming data and preparing to hand over to the IMPL Data lead. Demonstrable HR data architecture experience Identify and analyse ...

Eligible We are seeking an experienced Supply Chain Lead to drive the end-to-end transition of Procurement processes from legacy systems into Oracle. This is a key contract role supporting a major ERP transformation programme, requiring strong functional expertise and hands-on delivery capability. The Role … solution design, workflow development, process implementation, stakeholder engagement, and training delivery. Key Responsibilities Lead the transition of Procurement activities from legacy systems to Oracle Support all Procurement-related elements of the wider ERP migration programme Design, own and maintain the Procurement data strategy, ensuring data integrity throughout ...

Head of Systems/Leeds/£75,000 - £85,000 We're working with a growing organisation currently undergoing a three-company merger, who are looking to appoint a Head of Systems to lead the strategy and delivery of their business systems landscape. This is a senior … Director and the CFO, you'll act as a key driver across a multi-year programme to consolidate and modernise the company's systems architecture. The role is focused on business systems (ERP, CRM, BI and data) rather than desktop IT support, and will play a critical role ...

build, and optimise enterprise-scale data solutions, focusing on Databricks and cloud-based engineering. You’ll lead the migration of legacy Oracle systems to a scalable, cloud-native environment, ensuring high-quality pipelines and models that support analytics, regulatory reporting, and business decision-making. Key Responsibilities Lead … Python (or other programming languages). Proven experience leading data engineering teams and delivering enterprise-scale solutions. Experience migrating data from legacy systems (Oracle or similar) to cloud environments. Strong analytical, problem-solving, and communication skills with the ability to explain technical concepts to non-technical stakeholders. ...

Software Developer with experience in VB.NET and/or C#.NET to join our development team. You will work on internal and client-facing business systems, contributing to both ongoing product development and new feature delivery. About the role This role suits a developer with solid foundations in .NET … comfortable working across backend logic, database interaction, and supporting user-facing applications. You will be involved in maintaining existing systems while also helping modernise parts of the platform over time. Key Responsibilities: Develop and maintain applications using VB.NET and C#.NET Design, write, and optimise SQL Server queries and stored ...

hands on engineering role focused on building reliable and scalable data solutions. The successful candidate will work on modernising legacy systems, developing robust data pipelines, and helping the organisation turn complex and unstructured datasets into meaningful insights that support operational efficiency and real-time decision-making. … skills and the ability to translate technical solutions into business outcomes will be important. Responsibilities Lead the migration of legacy databases and systems to modern cloud or on-premise data platforms Design, build and maintain ETL pipelines to ingest and process large datasets from multiple sources Develop ...

enterprise ecosystems like APIs (REST/SOAP),MQ Series, event-driven integrations, batch interfaces, file-based integrations, Integrate with Digital platforms, Core banking systems, CRM/ERP systems, Payment gateways, define API enablement strategy for legacy systems and Implement middleware and integration patterns. Application Architecture …/COBOL monoliths, Green-screen applications → Web/UI platforms, Establish coding and architectural standards. Domain Expertise Responsibilities Leasing: Contract lifecycle management, Asset finance systems, Billing & payment schedules, Residual value management, Regulatory leasing compliance. Banking: Core banking operations, mortgage & deposits processing, payments & settlements, risk & compliance workflows, regulatory reporting frameworks. ...

hands-on development with Power Apps, Power Automate, and Dataverse, plus complex integrations (including custom connectors for databases like Oracle and legacy systems such as NEC/DRS). You'll mentor others, champion best practices, and explore emerging tools like Copilot Studio to boost efficiency. … canvas apps, workflows, and automations using Power Apps, Power Automate, and Dataverse. Building custom connectors and integrating M365 services (SharePoint, Teams, OneDrive) with external systems via Microsoft Graph, APIs, Azure Logic Apps, and more. Migrating existing applications to Microsoft environments and setting up robust integration patterns for non-Microsoft ...

professional to provide leadership, direction, and hands-on expertise in designing and delivering insurance-based technology solutions. This role spans modern engineering practices, Legacy system support, and close collaboration with Pricing teams, including experience working with Rulebook to ensure alignment with business logic and actuarial models. Key Responsibilities ...

enhanced performance. Automated Testing: Implement TDD and automated testing to uphold high-quality standards. Monitor and Analyze: Enhance performance and reliability across distributed systems to ensure operational efficiency. Build Automation Solutions: Develop CI/CD pipelines, configuration management, and deployments to streamline processes. Security Practices: Uphold robust security measures … level considered). Deep hands-on AWS experience (core services, serverless, compute, networking). Proven experience in migrating or modernizing legacy systems into cloud environments. Proficiency in test-driven development (TDD) and automated testing frameworks. Familiarity with Agile delivery, especially Scrum methodologies. A solid foundation in distributed ...

Engineer role focuses on the planning, execution, and management of data migration projects. Data Engineer are responsible for transferring data from legacy systems to new platforms, ensuring accuracy, consistency, and adherence to data integrity standards. Analyse existing data structures and understand business requirements for data migration. Design … orchestration tools like Terraform and Airflow. Strong analytical skills to assess data quality, identify inconsistencies, and troubleshoot data migration issues. Understanding of database management systems (SQL Server, Oracle, MySQL and NoSQL) and SQL query optimisation. Ability to plan and execute data migration projects, manage timelines, and coordinate with stakeholders. ...

attention to detail TECH STACK BI Tools: Power BI (primary), Microsoft Fabric (new platform) Database: SQL Server Data Tools: Excel (advanced) Legacy Systems: SSRS, SSIS (exposure helpful) Integrations: ERP systems, Salesforce WHAT YOU NEED Essential: Solid SQL skills with hands-on experience writing queries and manipulating … detail-oriented approach Comfortable juggling multiple priorities and stakeholder requests Nice to have: Background in wholesale, distribution, or logistics sectors Exposure to ERP systems (SAP, Oracle, Microsoft Dynamics, etc.) Salesforce experience Familiarity with Microsoft Fabric (actively building on this platform) Experience with legacy Microsoft BI technologies (SSRS ...

specify, develop and test the sub-system; also being responsible for varying specialist services which involve the choice and application of diverse processes, systems and techniques. Office based in Farnborough. SC Cleared or eligible for SC. What you'll be doing: SharePoint SME to build SharePoint solutions that … processes and governance requirements. Implement secure access and permissions models in line with organizational and MOD/NCSC policies. Integrate SharePoint with other enterprise systems (e.g. ServiceNow, Power BI, Azure, and legacy systems). Customise the SharePoint user experience through modern UI design, scripting (JavaScript/ ...

advanced data pipelines with Python, SQL, Spark/PySpark and Delta Lake. Champion strong data quality, governance and observability practices. Modernise legacy systems and support large-scale migrations into Azure. Provide technical leadership, set engineering standards and contribute to architectural decisions. Mentor engineers and foster a culture ...

advanced data pipelines with Python, SQL, Spark/PySpark and Delta Lake. Champion strong data quality, governance and observability practices. Modernise legacy systems and support large-scale migrations into Azure. Provide technical leadership, set engineering standards and contribute to architectural decisions. Mentor engineers and foster a culture ...

closely with Data Scientists, Analysts, and Software Engineers to deliver high‐impact projects. Contribute to the evolution of the data architecture , including modernising legacy systems. Support CI/CD, Infrastructure‐as‐Code, and best‐practice engineering standards. Ensure governance, security, and compliance across all data assets. Essential Skills ...

security, End User device management, project management, implementing ISO Standards (ISO27001, ISO9001). Responsible for the maintenance and gradual migration of legacy systems (e.g. databases, applications, file storage, etc.) from on-premise to a new Cloud/Hybrid architectures. This is both hand-on and a management … Flexible working hours Some of the main duties of the Head of IT will include: * Maintenance of legacy on-premise/hybrid systems, with eventual migration to new Cloud architectures * Regularly examine the organisation's information security risks, taking account of the threats, vulnerabilities, and potential impacts ...