26 to 50 of 202 Legacy Systems Jobs in England

international membership organisation operating within the healthcare education and research sector. This forward-thinking not-for-profit organisation is seeking an experienced Digital Systems Manager to join them during an exciting period of digital transformation. About the Organisation As a multidisciplinary membership organisation, they champion research, education, and knowledge … providing online learning resources to members worldwide. The role The organisation has invested significantly in digital infrastructure over recent years, replacing legacy systems with a modern, integrated tech stack centred around Salesforce and Fonteva. They have built a sophisticated member portal, integrated online payment systems ...

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 ...

focused on creating a cohesive architecture that supports business growth and operational excellence. You'll assess the current technology landscape across trading systems, finance, and middle office, identify gaps, and design a roadmap to leave legacy systems behind and build a modern, integrated ecosystem. This … hands-on coding role - it's about vision, strategy, and influence. You'll guide the mapping and research phase, evaluate pricing and trading systems, and make informed recommendations that transform how we operate. We need someone who can bridge the gap between technology and business. What ...

seen what technology can do. Now, imagine building the systems to make it happen from the ground up. An organisation dedicated to building public trust and setting professional standards is at a crossroads. Despite their critical mission, they've never had a dedicated Architecture team. Instead, this has been … architect in a small team managing a transformation, designing and owning the technology strategy from the ground up, and building scalable, secure systems that unify fragmented processes. It's not just about solving today's technology challenges, you'll be reshaping how the organisation operates, turning aging systems ...

modernization program. This is an opportunity to work on a cutting-edge initiative leveraging AI and modern data platforms to transform legacy systems into a future-ready architecture. What You'll Do Phase 1: Foundation & Discovery Legacy Inventory & Triage: Lead discovery of 40-50 legacy ...

functional testing using Azure Devops, XRAY and JIRA. It also includes defect tracking and management. Regression, Functional, emergency change and defect testing across systems in production. API testing, data validation, and batch process testing to ensure end-to-end system integrity. Designing and maintaining a test results dashboard … Framework/.NET Core, HTML/CSS/TypeScript/React, Python, SQL Server, Oracle). The role focuses on refactoring legacy systems to reduce technical debt, improve reliability and performance, and embed modern security patterns across the service estate. In addition, the engineer will contribute ...

practices and industry standards. Data Migration & Readiness Support data cleansing, enrichment, and harmonization activities. Define and validate data mapping rules from legacy systems to S/4HANA. Participate in mock conversions, data loads, and reconciliation activities. Ensure data quality thresholds are met prior to cutover. Data Governance ...

side and client-side applications using .NET Framework/Core , React/TypeScript , and relational databases ( SQL Server , Oracle ). Refactor legacy systems to reduce technical debt and improve performance. Implement modern security patterns (OAuth2/OpenID Connect, OWASP principles). Optimise database queries and schemas; ensure ...

future of data infrastructure. The Role You'll be responsible for the day-to-day management of SQL Server and Azure-based data systems, supporting ETL processes, and driving improvements across data platforms. This is a great opportunity for someone who enjoys solving problems, improving systems, and working … Familiarity with Azure SQL, Azure Analytics, Dataverse or similar (or willingness to learn) Strong analytical skills and ability to reverse-engineer legacy systems Excellent documentation and stakeholder communication skills A proactive, collaborative mindset with a passion for continuous improvement Core Competencies Clear and respectful communicator Open-minded ...

Developer Purpose of the Role To provide versatile software development expertise across a range of technologies, supporting both Legacy systems and new applications as part of a major transformation programme Key Responsibilities Design & Development Work with Legacy technologies during the transition to a modernised platform. … Experience in software design, TDD/unit testing, and DevOps pipelines. Computing-related degree or equivalent practical experience. Experience with financial, banking, or accounting systems is desirable. ...

Senior C++ Developer you will design and develop high throughput backend services for microsecond real-time risk, pricing, trading engines and market making systems, working across the full software development lifecycle using Rust (and some C++ for legacy systems). You'll collaborate with a small … talented team, problem solving and working on complex and challenging systems with interesting work. Location/WFH: You'll join the team in Central London with flexibility to work from home 1-2 days a week. About you: You have strong backend OOP, multithreaded software engineering experience with C++ ...

practices and industry standards. Data Migration & Readiness Support data cleansing, enrichment, and harmonization activities. Define and validate data mapping rules from legacy systems to S/4HANA. Participate in mock conversions, data loads, and reconciliation activities. Ensure data quality thresholds are met prior to cutover. Data Governance ...

practices and industry standards. Data Migration & Readiness Support data cleansing, enrichment, and harmonization activities. Define and validate data mapping rules from legacy systems to S/4HANA. Participate in mock conversions, data loads, and reconciliation activities. Ensure data quality thresholds are met prior to cutover. Data Governance ...

experience in Change Data Capture (CDC). The candidate will design and implement robust data migration strategies, ensuring seamless integration between legacy systems and modern cloud-based architectures. Responsibilities Architect CDC Pipelines: Design and optimize Change Data Capture workflows (IBM CDC or equivalent), including subscription design, bookmarks ...

functional specifications for WRICEF objects relating to reporting, interfaces, and reconciliations. Manage data migration of GL balances, open items, and consolidation structures from legacy systems. Run at least two full mock close cycles prior to go-live, ensuring reconciliation of trial balances and intercompany eliminations. Ensure integration with ...

domain with product leadership of our wider platform transformation. In your vertical, you’ll work closely with a squad to rebuild and evolve critical systems (for example, order generation), ensuring they’re robust, scalable, and deliver clear business and customer outcomes. At the same time, you’ll play … progress with visible customer and commercial value. This role would suit a PM who thrives on complexity, enjoys connecting the dots across teams and systems, and has the communication skills to simplify technical change for diverse stakeholders. It’s not about being the most technical person in the room ...

projects across modern business systems. This is an excellent opportunity for a recent graduate or junior professional looking to build a career in data, systems, and technology consulting - with full training provided. About the Role You'll support end-to-end data migration activities, helping move data from legacy systems into new platforms. Working alongside experienced consultants, you'll gain hands-on exposure to data analysis, transformation, validation, and testing in real-world projects. Key Responsibilities Assist with data extraction, cleansing, and transformation activities Support data mapping between source and target systems Validate migrated data ...

take a senior role within a product-focused technology team. You'll help shape technical direction, modernise existing platforms, and deliver secure, scalable systems, while supporting and mentoring other engineers. What you'll do Lead the design, development, and evolution of cloud-based applications Incrementally modernise legacy systems and reduce technical complexity Work closely with product, design, and business stakeholders to shape solutions Provide hands-on technical leadership within a cross-functional team Design and maintain reliable CI/CD pipelines and improve release practices Identify technical risks and resolve complex issues, including live ...

trillion on benefits every year. It’s their second-largest cost after payroll — yet the entire category is still running on legacy systems and outdated assumptions. The space is primed for transformation: despite its scale, it’s been almost completely overlooked by AI-first startups. Incumbents — including … resident expert. You won't just be tuning hyperparameters in a notebook; you will be a core software engineer architecting the complex systems that make AI useful in production. In the immediate future, your time will be split between crafting complex AI processing architectures (40%) and hands-on data ...

experience (essential) Experience using source control (e.g. GitLab) and working with development pipelines Experience working across the full development lifecycle, including legacy systems Ability to work independently, define tasks, and deliver solutions with minimal supervision Strong communication skills with experience engaging both technical and non-technical stakeholders ...

summary The Cach Operational Linux Systems Administratorwill report to the Operational Manager and be responsible for the implementation and administration of the strategic Operational Database (ODB) environments (Cach). The ODB is a critical core component of the Epic system and so maintaining high levels of availability and performance … knowledge with a particular focus on the creation of reusable scripts for automating routine tasks Significant experience with reconfiguring unsupported or legacy systems to connect to new database locations. Experience of managing concurrent projects and conflicting priorities. Experience of working with hypervisors and associated management tools Extensive ...

looking for a senior C# Developer with a strong architectural focus to join a highly skilled engineering team working on business-critical systems at scale . This role sits at the heart of a major technology estate and offers the chance to modernise legacy platforms , shape technical … Doing Designing and developing applications using .NET Framework/.NET Core , React/TypeScript , Python , and relational databases Refactoring and modernising legacy systems to reduce technical debt and improve performance and reliability Embedding modern security patterns across APIs and services (authentication, authorisation, OWASP controls, secure access) Contributing ...

seeking a Technical Security Architect with strong expertise in Application Security, RBAC, ABAC and Policy Management to assess and modernise a predominantly legacy application estate, including platforms built on SQL Server. This role will focus on evaluating the current security posture, reviewing how access and security policies … needs Define how policies are authored, managed, versioned and enforced across applications Identify security gaps, technical debt and policy inconsistencies within legacy systems Design target-state application security architectures that balance modern security principles with platform constraints Produce a pragmatic roadmap for modernising access control and policy ...

Backend Software Engineer you will design and develop high throughput backend services for microsecond real-time risk, pricing, trading engines and market making systems, working across the full software development lifecycle using Rust (and some C++ for legacy systems). You'll collaborate with a small … talented team, problem solving and working on complex and challenging systems with interesting work. Location/WFH: You'll join the team in Central London with flexibility to work from home 1-2 days a week. About you: You have strong backend OOP, multithreaded software engineering experience with C++ ...