1 to 25 of 430 Legacy Systems Jobs in the UK

layer serving tens of millions of customer accounts across five markets — the backbone that lets every customer sign in, stay secure, and trust the systems behind every interaction with Tesco, in-store and online.We're looking for a Product Manager to own strategy and roadmap for a core part … that platform's data foundations: the systems that master, structure, and serve the datasets underpinning identity at scale. This is a genuinely technical product role — you'll work daily with engineering on legacy-to-modern migrations, large-scale data system design, and the quality and reliability that ...

Programme team. You'll be responsible for designing, developing, and executing the Cutover Plan that transitions the organisation from legacy systems and processes to the new Oracle Health Millenium platform. You'll also lead the early live support strategy to ensure a smooth go-live across … duties of the job The EPR Cutover Project Manager will lead the strategic planning and execution of the transition from existing legacy systems and workflows to the new Electronic Patient Record (EPR) system. This role is critical to delivering a seamless and disruption-free go-live across ...

standard range are managed through governance controls to protect internal equity. At Leonardo in Yeovil we are seeking an experienced Software Engineer - Mission Management Systems to drive the end-to-end development of high-integrity aircraft software during a critical technical pivot. This role focuses on the evolution … Tactical Mission Management Systems-maintaining the reliability of our legacy manned platforms while architecting the software for our emerging uncrewed and autonomous capabilities. Your impact Working within our Helicopter division, you will be taking ownership of complex mission system software component, ensuring legacy systems ...

above the standard range are managed through governance controls to protect internal equity.At Leonardo in Yeovil we are seeking experienced Software Engineers - Mission Management Systems to drive the end-to-end development of high-integrity aircraft software during a critical technical pivot. This role focuses on the evolution … Tactical Mission Management Systems—maintaining the reliability of our legacy manned platforms while architecting the software for our emerging uncrewed and autonomous capabilities.Your impactWorking within our Helicopter division, you will be taking ownership of complex mission system software component, ensuring legacy systems remain robust ...

Were looking for an experienced Systems Analyst to support a major Data Migration and SaaS implementation project within the financial services environment. The role will support the replacement of a legacy collections platform with a new SaaS solution, with a strong focus on data migration, systems … functional requirements. Define project scope, objectives, backlog items and refinements. Support solution design and development across internal teams and external vendors. Lead Systems Integration Testing (SIT) and support User Acceptance Testing (UAT). Support implementation, operational readiness and transition into live service. Work with external suppliers to ensure delivery ...

being a key differentiator.We are modernising the platforms that power how M&S Foods designs products, collaborates with suppliers and manages commercial decisions. These systems sit at the centre of the M&S Foods ecosystem and support thousands of internal users and suppliers across product development, supply chain … establish shared technical patterns that enable teams to build safely and efficiently. Our focus is evolving a complex landscape of legacy systems and point-to-point integrations into modern API-led and event-driven distributed systems that are easier to scale, operate and extend.Due to high ...

Core Responsibilities :Lead the design, architecture, and implementation of scalable APIs, services, and accessibility-first user interfaces. Drive the modernization of legacy systems into modular, event-driven, API-first components. Deliver AI-native features and improvements across both front-end and back-end, using multiple programming languages … outcomes from design through to production. Desirable :Experience with cloud platforms such as Azure, AWS, or GCP. Experience with event-driven architectures, distributed systems, or microservices. Experience modernizing legacy systems into modular, scalable platforms. Experience working in cross-functional product teams. Experience mentoring engineers or contributing ...

processes and data transformation logic to improve and normalise financial data.Validate and reconcile data loaded into Workday, ensuring consistency with legacy systems and financial requirements.Engage regularly with clients throughout the project lifecycle, ensuring a smooth transition from legacy systems to Workday Financials.Manage multiple tasks … develop expertise.Skills & Requirements:Bachelor’s degree or equivalent experience in Information Technology, MIS, Finance, or a related field.Experience in ERP data conversion or financial systems implementation.Experience with Workday Financials is essentialUnderstanding of financial data structures, including General Ledger, transactions, and reporting frameworks.Experience with data conversion, migration, and data loading ...

regulatory compliance, resiliency improvements, and platform modernization.This role requires a hands-on architect who can work effectively within complex, highly interconnected legacy systems, while driving pragmatic, incremental improvements in architecture, scalability, and operational efficiency.You will balance run and change, ensuring stability of critical platforms while enabling transformation … Glue, EKS, S3, SQS, SNS)Backend: Python, Java/C# (.NET), APIs, microservicesFrontend: AngularData: SQL Server, PostgreSQL, ETL pipelines, data lake patternsArchitecture: Event-driven systems, microservices, API-first designDevOps: CI/CD (GitHub Actions, Jenkins), Terraform, containerization (Docker/Kubernetes)Orchestration - : Airflow, Step Functions, BPM toolsObservability (desirable): GrafanaAI (desirable ...

requirements into scalable, maintainable product logic. Implement interest, accruals, repayments, fees, payment allocation, balances and lifecycle events. Support product migration from legacy systems to Vault. Collaborate with Product, Business Analysis, Architecture and Engineering teams. Develop automated tests covering business rules, edge cases and regression scenarios. Participate … reviews and technical design discussions. Investigate defects and support functional, integration, migration and production testing. Validate and reconcile financial calculations between legacy systems and Vault. Support releases and produce technical documentation. Follow engineering, security, governance and regulatory standards. Essential Skills & Experience Strong software development experience, preferably Python ...

requirements into scalable, maintainable product logic. Implement interest, accruals, repayments, fees, payment allocation, balances and lifecycle events. Support product migration from legacy systems to Vault. Collaborate with Product, Business Analysis, Architecture and Engineering teams. Develop automated tests covering business rules, edge cases and regression scenarios. Participate … reviews and technical design discussions. Investigate defects and support functional, integration, migration and production testing. Validate and reconcile financial calculations between legacy systems and Vault. Support releases and produce technical documentation. Follow engineering, security, governance and regulatory standards. Essential Skills & Experience Strong software development experience, preferably Python ...

stack Identified gaps, risks, and constraints Target architecture aligned to business and product direction Migration and/or retirement proposals for legacy systems Ensure transition plans are: Realistic and incremental Aligned with delivery priorities Understood by engineering and product teams 5. Cross-Domain Alignment & Delivery Support Support … Experience, Knowledge, Skills, Abilities, Education) Required Experience 15+ years of experience in software engineering, with significant time in architectural roles Proven experience designing distributed systems across cloud and application layers Strong experience with at least one major cloud platform (Azure, AWS, or GCP), ideally across multiple Experience integrating hardware ...

stack • Identified gaps, risks, and constraints • Target architecture aligned to business and product direction • Migration and/or retirement proposals for legacy systems Ensure transition plans are:• Realistic and incremental • Aligned with delivery priorities • Understood by engineering and product teams 5. Cross-Domain Alignment & Delivery SupportSupport effective … looking for someone who has:Required Experience• 15+ years of experience in software engineering, with significant time in architectural roles • Proven experience designing distributed systems across cloud and application layers • Strong experience with at least one major cloud platform (Azure, AWS, or GCP), ideally across multiple • Experience integrating hardware ...

teams, driving large‐scale modernization programs, and fostering a culture of innovation. You will be at the forefront of transforming our legacy systems into a modern, data‐enabled, and microservices‐based architecture to support our growing business needs. Key Responsibilities Technology Leadership & Strategy Define and execute … Finance, Agency Lending, or Collateral Management/Optimization is strongly preferred. Proven experience leading a successful, large‐scale technology transformation from legacy systems to a microservices‐based architecture. Education Bachelor’s or Master’s degree in Computer Science, Engineering, or a related technical field. Desired Skills Technical ...

products.Translate business requirements into scalable, maintainable product logic.Implement interest, accruals, repayments, fees, payment allocation, balances and lifecycle events.Support product migration from legacy systems to Vault.Collaborate with Product, Business Analysis, Architecture and Engineering teams.Develop automated tests covering business rules, edge cases and regression scenarios.Participate in code reviews … technical design discussions.Investigate defects and support functional, integration, migration and production testing.Validate and reconcile financial calculations between legacy systems and Vault.Support releases and produce technical documentation.Follow engineering, security, governance and regulatory standards.Essential Skills & ExperienceStrong software development experience, preferably Python.Hands-on experience with Thought Machine Vault Smart Contracts.Experience ...

sector. As a Principal Backend Engineer, you'll lead the design and delivery of high impact technology projects, helping clients modernise legacy systems, migrate to AWS and introduce modern CI/CD and cloud deployment practices. You'll combine hands-on engineering with technical leadership, problem solving … projects and client engagements from design through to delivery Developing scalable Java applications using Spring Boot and microservices Modernising and migrating legacy systems to AWS Designing and working with REST APIs and distributed systems Introducing and improving CI/CD and DevOps practices Providing technical expertise ...

onboarding and lifecycle of data sources, from discovery and evaluation through to production readiness Lead migration of datasets and workflows from legacy systems to strategic data platforms Partner with engineering, and operations, and commercial product teams to deliver scalable, reliable data capabilities Drive data quality, coverage … production (source evaluation, data mapping, ingestion patterns, validation rules, change management, and operational handover).Experience leading migration of datasets from legacy systems to target data platforms (e.g. cloud/data lake/warehouse), including data mapping, transformation design, reconciliation, parallel run strategies, and cutover planning to ensure ...

long-term maintainability Guide API and domain design standards - clear service boundaries, consistent contracts, and pragmatic integration between modern services and legacy systems Shape event-driven and integration patterns so teams can build independently without breaking cross-squad journeys Champion automated testing, observability, and production readiness … Oversee database and schema evolution practices - migrations, data integrity, and performance - in partnership with platform and infrastructure teams Lead incident response for backend-owned systems - triage, escalation, post-incident reviews, and runbook quality Mentor engineers on PHP (Yii/Yii2), Go, Security, Performance and Optimisation - raising the bar through ...

Bank investment. Success means delivering a digital-first operating plan that improves customer journeys and releases new features while strengthening resilience evergreening critical systems and control effectiveness. You’ll work closely with UK Business Banking leadership and the UK CIO and partner with regional and global teams to modernise … decommission legacy systems and progress cloud adoption and agile ways of working. You’ll also create synergies across UK Technology, including Retail Banking and Wealth to simplify technology stacks and progress platform and architectural convergence.What you'll be doingOwn UK Business Banking technology delivery ...

services sector.As a Principal Backend Engineer, you'll lead the design and delivery of high impact technology projects, helping clients modernise legacy systems, migrate to AWS and introduce modern CI/CD and cloud deployment practices. You'll combine hands-on engineering with technical leadership, problem solving … Leading technical projects and client engagements from design through to deliveryDeveloping scalable Java applications using Spring Boot and microservicesModernising and migrating legacy systems to AWSDesigning and working with REST APIs and distributed systemsIntroducing and improving CI/CD and DevOps practicesProviding technical expertise and guidance to clients ...

will lead the delivery of business-critical applications while supporting a major ERP transformation programme. You'll oversee the transition from legacy systems to a new ERP platform, ensuring business continuity throughout the migration. Managing a team of application specialists, you'll coordinate testing, training and data … applications such as ERP, WMS and OMS. You'll be a confident people leader with strong stakeholder management skills, a solid understanding of enterprise systems, integrations and data governance, and experience managing multiple projects simultaneously. Knowledge of Oracle Retail would be highly advantageous, as would experience supporting legacy ...

making a tangible difference every day, we'd like to hear from you. ABOUT THE ROLE As a Senior Specialist – Mission Critical Radio & Cellular Systems , you will provide technical leadership for the operational support, maintenance and continual improvement of Heathrow Airport's critical communications infrastructure. Working across a diverse … technology estate spanning legacy and modern radio systems, RF over Fibre Distributed Antenna Systems (DAS), public and private cellular infrastructure and IP-based communications platforms, you'll lead the resolution of complex technical issues while helping shape the future direction of operational communications at Heathrow. This ...

established, multi-site retail business to recruit an ERP Applications Manager, to oversee a major technology transformation, supporting the transition from legacy systems to a new ERP platform while maintaining the stability of existing business applications. The role will lead a team of Analysts and oversee … highly desirable. Bachelor's degree in IT, Computer Science, or a related field, or equivalent experience. Experience supporting and transitioning legacy systems during major technology migrations. Good knowledge of enterprise architecture, system integrations, APIs, ETL and data governance. Proven ability to lead technical teams and manage multiple ...

responsible for the design, implementation and support of Avon’s IT Infrastructure.The Network and Infrastructure Engineer is responsible for the operation and maintenance of systems across all sites and hosting providers. The role manages on-premises and private cloud infrastructure, ensuring high availability, performance, and security of core … systems while supporting strategic transformation initiatives This position works within established standards and architectures, supporting network and infrastructure platforms and collaborating with wider IT teams and business stakeholders.Key ResponsibilitiesDesign, implement, and maintain network, server, and storage infrastructureSupport delivery of infrastructure solutions across Cisco-based networking environmentsManage and support routing ...

protect democracies and support sovereign decision‐making while addressing the ethical implications of powerful technologies. Задачи Integrate state-of-the‐art software into complex systems and challenging operational environments Define and execute end‐to‐end outcomes for delivering novel capabilities Collaborate with customer avionics engineers to understand aircraft mission … features directly to users Coordinate customers, partners, and Helsing engineers during technology demonstrations Showcase Helsing's software and AI capabilities in simulations or real systems Требования Degree in computer science, software engineering, electrical engineering, or another relevant field Broad understanding and creative use of computer systems Curiosity ...