1 to 25 of 73 Legacy Systems Jobs in London

will be accountable for building seamless, high-converting digital experiences that are secure, compliant, and scalable, while progressively modernising and integrating legacy systems into a future-ready platform. With a core focus on their Self-Serve capabilities for their customers. This is a hands-on role … delivery cycles, working closely with engineering teams to ensure timely, high-quality releases. Digital Transformation & Platform Evolution Drive the modernisation of legacy systems, integrating them into scalable, customer-centric digital platforms. Define and deliver API-led, modular solutions that support future growth and innovation. Select and collaborate ...

please view our Moorfields benefits leaflet. Job description Job responsibilities MAIN RESPONSIBILTITES Create a cutover plan detailing the transition from the legacy systems/paper toMoorConnectEPR (consisting of bothOpenEyesand Expanse). The plan to detail cutover for, Integration, Infrastructure including security implications, Service Desk, IM/Data … Rehearsal (FDR) Plan and owning delivery of the Technical Plan during FDR. Proficiency in creating a cutover plan detailing transition from legacy systems to EPR offering, including modules deployment. Desirable Cutover experience on a MEDITECH Expanse deployment Project Management Experience Essential Experience in managing decision and checkpoint ...

term ERP implementation project. This role will support a phased ERP rollout, ensuring accurate, compliant, and validated migration of data from legacy systems into a new enterprise platform within a regulated GMP environment. Key responsibilities: Plan, execute, and validate data migration activities from multiple legacy systems into a new ERP platform. Ensure data integrity, accuracy, traceability, and regulatory compliance throughout the migration lifecycle. Support and manage data archival, data cleansing, de-duplication, and transformation activities to improve data quality. Operate independently, managing workload, timelines, and methods of delivery. Required experience and skills ...

needs. Own the delivery of direct digital product journeys , ensuring seamless experiences with high conversion rates. Drive digital transformation by modernising legacy systems and integrating them into scalable, customer-centric platforms. Select and collaborate with engineering teams to ensure robust technical solutions and efficient delivery. Design … Senior Product Owner in financial services or fintech with significant experience of Mobile Applications/APPs and Portals Strong understanding of legacy systems and experience delivering digital transformation programmes, ideally within customer portals. Solid technical knowledge of software delivery, APIs, and system integration . Deep expertise ...

With solid groundwork already in place, you will take the lead in defining the technical future, steering the transition from legacy PHP systems to a modern, scalable platform built with Laravel, InertiaJS, and Vue 3. This role would suit an experienced Lead PHP developer experienced with Laravel … ready to step beyond maintaining legacy systems and help build something modern, scalable, and genuinely impactful. The Role: Lead the team and support Full Stack development Take responsibility for legacy PHP systems, ensuring they remain reliable as you progressively build a new platform. Hours ...

North London office throughout the year. You'll take ownership of the technical direction, guiding the transition from legacy PHP systems to a modern, scalable architecture using Laravel, InertiaJS, and Vue 3. This position is ideal for an experienced Lead Software Developer who is ready to move … beyond maintaining legacy systems and wants to build something modern, meaningful, and impactful. The Role: Lead and mentor a small team while remaining hands-on with full-stack development Maintain and support existing legacy PHP systems while overseeing the build of a new platform ...

community of practice and staying current with Salesforce platform evolution Provide technical leadership across dependencies where Salesforce is integrated with multiple legacy systems, with proven ability to drive technical strategy and resolve integration challenges. Monitoring and troubleshooting: ability to implement monitoring, logging and proactive issue resolution across … best practices Proven track record of working with Salesforce as part of a wider integrated IT estate, including legacy and external systems using a range of integration tools and patterns Experience with Salesforce DevOps and CI/CD tooling Strong understanding of Salesforce security management, data management ...

community of practice and staying current with Salesforce platform evolution Provide technical leadership across dependencies where Salesforce is integrated with multiple legacy systems, with proven ability to drive technical strategy and resolve integration challenges. Monitoring and troubleshooting: ability to implement monitoring, logging and proactive issue resolution across … best practices Proven track record of working with Salesforce as part of a wider integrated IT estate, including legacy and external systems using a range of integration tools and patterns Experience with Salesforce DevOps and CI/CD tooling Strong understanding of Salesforce security management, data management ...

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 ...

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 ...

large-scale ERP transformation initiative. This role is responsible for planning, executing, and validating the migration of data from multiple legacy systems into a new enterprise platform. The successful candidate will take full ownership of end-to-end migration activities, ensuring data accuracy, integrity, compliance, and traceability … throughout the migration lifecycle. Key Responsibilities Analyse legacy system data structures and define detailed data mapping rules aligned with the target ERP data model. Design, develop, and execute ETL workflows for data extraction, transformation, and loading activities. Plan and conduct trial migrations, validate outputs, and reconcile migrated data ...

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 ...

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 ...

ensure performance and reliability. - Monitor solutions postdeployment and proactively resolve issues, performance problems or system changes. - Integrate Microsoft solutions with legacy systems and external APIs to ensure a joinedup technology estate. - Identify opportunities to use AI, machine learning and advanced analytics to support smarter service delivery. - Work ...

Ariba environment. Role Overview You will be responsible for delivering a controlled and effective migration from legacy OCR and document-processing systems into the Council’s new SAP landscape. The role will focus on ensuring seamless system integration, improved controls, and the realisation of efficiencies across Finance … London to support delivery and stakeholder engagement. A key element of the role will be change management , ensuring successful adoption of new processes and systems across internal teams and external suppliers. Key Responsibilities Lead the end-to-end migration of OCR and document-processing activities into SAP S/ ...

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++ ...

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 ...

bring: - Experience designing and configuring RPA workflows, bots and automation solutions - Experience developing and maintaining automated pipelines for AI tools - Ability to integrate multiple systems and applications using APIs, JSON, XML, CSV, or other data interchange methods. - Knowledge of database environments (e.g., MS SQL, Dataverse, OneLake). - Experience working … approaches including unit, integration and performance testing. - Monitor automated solutions, proactively resolving issues and optimising performance. - Design solutions that integrate with legacy systems and external APIs to ensure interoperability and a smooth user experience. - Work in an agile, multidisciplinary environment, contributing to DevOps practices, version control ...

Data Migration Engineer to support a large-scale ERP transition by planning, executing, and validating migration of data from multiple legacy systems into a new enterprise platform. The role requires strong ownership of end-to-end migration activities, ensuring data accuracy, integrity, and compliance throughout the process. … Responsibilities Analyse legacy system data structures and define mapping rules aligned to the new ERP model. Design and execute ETL workflows for data extraction, transformation, and loading. Plan and run trial migrations, validate outputs, and reconcile results against source systems. Drive data cleansing and de-duplication efforts ...

Data Migration Officer will play a key role in ensuring the accurate and secure migration of HR and payroll data from legacy systems into the new HCM platform. You will work closely with HR, technology teams, third-party suppliers, and a dedicated project team to deliver high ...

business as usual" role-you will be a key architect in re-engineering a mission-critical trading platform, migrating legacy systems into a cloud-native, microservices architecture. The Environment Location: Hybrid (3 days in the City of London). Type of Role: Permanent Focus: Electronic Trading, Messaging ...

business as usual" role-you will be a key architect in re-engineering a mission-critical trading platform, migrating legacy systems into a cloud-native, microservices architecture. The Environment Location: Hybrid (3 days in the City of London). Type of Role: Permanent Focus: Electronic Trading, Messaging ...

Location: Hybrid (London City/Remote) A leading UK pensions manager is seeking an experienced ERP Finance Project Manager to lead a major finance systems migration as part of a large-scale ERP transformation. This hybrid role offers flexibility between London City and remote working. You'll collaborate with … senior stakeholders across Finance, IT, and Change to ensure a seamless transition from legacy systems to a modern ERP platform. Your Role: Lead the end-to-end delivery of the finance systems migration workstream within the ERP programme. Develop and manage project plans covering scope, timelines ...

position with real ownership, influence, and long-term upside. The Role As a Founding Backend Engineer , youll help architect and build the core backend systems from the ground up. Youll work across system design, data infrastructure, and production reliability, partnering closely with ML, product, and infrastructure teams. You wont … maintaining legacy systems - youll be shaping the foundations that everything else is built on. What Youll Be Doing Designing and building core backend services and APIs in Python Architecting scalable data pipelines and distributed systems Productionising ML models in close collaboration with ML engineers Making early ...