1 to 25 of 57 Legacy Systems Jobs in the South East

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 ...

will be responsible for driving the adoption of cutting-edge technologies and securing the Agency's digital assets. This includes responsibility for our technology systems, architecture, digital products, service desk, artificial intelligence, technology innovation, change delivery and cyber security. Role Purpose The Director of Digital and Technology is tasked … with overseeing the strategic direction and execution of digital transformation initiatives and cyber security protocols within the organisation, modernising legacy systems and advancing the digital agenda. This includes: Driving Strategic Alignment: Developing and implementing comprehensive digital transformation strategies that align with the organisation's strategic goals ...

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 ...

Title: Microsoft D365 BC Systems Manager Salary: £59,103 per annum, Band H, Level 3 - Inclusive of a Market Supplement Location: Scout Store, Lancing, West Sussex, BN15 8UG Contract Type : Permanent Working Hours : 35 - Hybrid working with two days a week in Lancing and as required. About the role … looking for an experienced and practical Microsoft D365 Business Central Systems Manager to take ownership of our core business systems. This is a hands-on role where you'll make a real difference, keeping our systems running smoothly and helping the business work better every day. ...

strategic spatial energy planning, environmental impact assessments, economic modelling, and community engagement. The architect will play a pivotal role in consolidating legacy systems, ensuring data quality, and enabling advanced geospatial analytics. Your Responsibilities 1. GIS Platform Architecture & Design Lead the end-to-end design of a scalable … platform aligned with project strategic goals Define architecture principles, technology stack, and integration patterns Ensure interoperability with internal and external systems (e.g., energy models, environmental databases) 2. Infrastructure Provisioning Design and provision Azure-based environments (Sandbox, Dev, UAT, Production) Ensure high availability, scalability, and security of cloud infrastructure Integrate ...

across mission-critical systems. You will be the technical authority for infrastructure decisions, working closely with military stakeholders, architects, and delivery teams to ensure systems are secure, resilient, interoperable, and fit for operational use. Key Responsibilities Act as Technical Lead for infrastructure within a secure military environment Lead … standards and policies Lead and mentor engineers, setting technical direction and best practice Work closely with architects and delivery leads to ensure interoperability between systems, networks, and platforms Support integration of legacy military systems with newer infrastructure solutions Ensure infrastructure is designed for resilience, availability ...

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 ...

will be working for Portsmouth Homes, who are embarking on a major transformation of its Housing Management services, replacing a complex mix of ageing systems with a single, modern, cloud-hosted Housing Management System (HMS). This high-profile project will play a significant role in improving services … engagement where required, ensuring supplier deliverables meet contractual expectations. Oversee all technical and functional workstreams, including data cleansing, migration from multiple legacy systems, integrations with Repairs, Community Safety, Finance and corporate platforms, environment management, and configuration. Manage testing cycles end-to-end, including SIT, UAT, defect tracking ...

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 ...

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 ...

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. ...

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 ...

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 ...

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 ...

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 ...

Embeddings, vector stores, and evaluation Guardrails, rate limiting, and failure handling Human-in-the-loop workflows Integration & automation Integrating AI into existing enterprise systems Automating end-to-end workflows (not just isolated tasks) Working with legacy systems and imperfect data You understand security, permissions, and data ...

mentor developers, contribute to architectural decisions, and support multidisciplinary delivery across the squad. Development is centred around a Microservices architecture, with involvement in legacy systems. Beyond squad work, you’ll be part of the Back End Chapter, collaborating on technology choices, standards, and continuous improvement initiatives. Required Skills ...

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 ...

Cleared Java Developer to join a leading technology consultancy working on the upgrade, enhancement, and modernisation of a number of business-critical legacy systems. You will be part of a collaborative Agile delivery team , helping to improve system performance, resilience, and scalability while ensuring continuity for end users. … nature of the work, active SC Clearance is essential . Key Responsibilities Design, develop, and enhance Java-based applications supporting legacy systems Contribute to iterative development within an Agile/Scrum environment Build and consume web services using REST/JSON and XML/SOAP APIs Write ...

client is looking for an experienced software developer to join their team and help them improve and adapt internal systems, expanding functionality and ensuring longevity. A Software Engineer is responsible for providing software development and engineering expertise for internally developed systems. These include POLARIS , the primary operational system team … related ancillary systems and the supporting infrastructure. As a key member of the IT development team, this role will support the development of new, maintenance and development of existing, and modernisation of legacy systems, and software engineers are expected to lead on requirement gathering and user ...

programs leveraging Google Cloud Platform (GCP) and modern data engineering frameworks. The role involves defining the data strategy, overseeing migration from legacy systems to cloud-native architectures, and implementing scalable data pipelines and analytics solutions using GCP services and Data Factory. The candidate will manage cross-functional ...