1 to 25 of 78 Legacy Systems Jobs in London

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 ...

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 ...

needed. Lead a dedicated test team of three to four members, coordinating their activities to ensure thorough validation of outputs between legacy systems and new technology solutions. Support comprehensive testing efforts by collaborating with testers across multiple locations, including the UK and Poland, guaranteeing accuracy and reliability … system outputs. Utilise advanced data analytics skills to compare, reconcile, and validate outputs from legacy systems against those generated by the new platform. Prepare detailed reports for clients or senior management covering incidents, proposals, or other relevant areas as required by operational needs. Attend and contribute meaningfully ...

Join Our Team as a Finance Systems Lead at Foster + Partners Foster + Partners is one of the world’s most innovative and respected studios for sustainable architecture, urbanism, engineering, and design. Founded by Norman Foster in 1967, we’ve grown into a global community of over … expand, we’re implementing a new ERP platform to support the next chapter of our growth — and we’re looking for a skilled Finance Systems Lead to help shape that future. About the role As our Finance Systems Lead , you will own and optimise F+P’s financial systems ...

Contract) We’re working with a technology-led company building a modern enterprise platform used by large organisations. The product replaces legacy systems with scalable, secure, and reliable software. This is an 8-week contract, outside IR35, fully remote, open to UK & EU-based engineers, paying … starting immediately. The Role You’ll be responsible for key backend systems that support enterprise, multi-user workflows, with a strong focus on scalability, security, and reliability. You’ll work closely with internal product and engineering stakeholders to turn evolving requirements into robust, production-ready systems. Responsibilities Build ...

hybrid cloud transformation – You will design and implement modern hybrid data architectures (e.g. Snowflake, Redshift, BigQuery) and drive the migration of legacy systems to cloud-native solutions that unlock agility and performance. We OPTIMISE and SECURE cloud environments – You will evaluate cloud environments and provide recommendations ...

just advise from the sidelines Technical Environment Multiple platforms and applications AWS and Azure cloud environments Mix of legacy and modern systems Mainframe experience is beneficial Cloud-native and modern applications DevOps skills and mindset are highly desirable About You Proven experience as a Senior … Coach/Consultant Strong background in transforming ops teams and operating models Comfortable working with both modern cloud platforms and legacy systems Excellent stakeholder engagement and coaching skills Passionate about culture change and building sustainable SRE practices Collaborative, pragmatic, and outcome-focused Why Join? This ...

scale insurance carriers. This role is critical in ensuring seamless connectivity between Insurance platforms (e.g., Guidewire PolicyCenter, BillingCenter, ClaimCenter, Reinsurance Management) and external enterprise systems, InsurTech platforms, regulatory bodies, and cloud environments. Key Responsibilities: Integration Architecture & Solution Design Architect scalable, high-performance, and secure integration solutions for Insurance policy … real-time claims validation, risk modeling, and actuarial data processing. Lead legacy modernization efforts, defining data migration strategies from on-prem core systems to insurance platforms. Design and implement Guidewire Edge APIs, GX Models, Messaging Framework, and Integration Gateway for external system connectivity. Optimize performance, security ...

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 ...

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 ...

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 ...

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++ ...

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 ...

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 ...

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 ...

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++ ...

data centres and cloud environments. Key focus areas include: Leading the migration from Nomad to Kubernetes across a hybrid infrastructure environment Designing highly available systems that support real-time trading operations Expanding the firm's cloud footprint (AWS/Azure/GCP) while maintaining on-prem capabilities Owning projects … from design through production What you'll need: Production experience with Kubernetes (EKS/AKS/GKE or bare-metal) Strong Linux systems background; Windows experience is beneficial Track record delivering cloud migrations and managing hybrid environments Experience supporting mission-critical, highly available systems What makes this different ...

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 ...