1 to 25 of 60 Legacy Systems Jobs in the South East

play a pivotal role. This is a high-impact position where you'll lead the end-to-end migration from legacy billing systems to a modern, scalable platform , while owning the digital billing experience across customer channels. You'll sit at the intersection of product, technology … billing migration strategy and execution Own the migration roadmap, including dependencies, risks, and key milestones Oversee transition from legacy systems with minimal/no customer disruption Ensure pricing integrity, service continuity, and regulatory compliance throughout Proactively resolve product, billing, and integration challenges Digital Product Ownership Own billing ...

data architecture. You will be responsible for helping shape Logical and Canonical Data Models (LDM/CDM), supporting the migration of legacy systems into a modern, scalable data environment and building high performance integration solutions across multiple business systems. The role is responsible for ensuring the optimal … ROLE AND RESPONSIBILITIES Collaborate with the Data Architect to design and deploy LDMs and CDMs, facilitating the decoupling of legacy core systems from modern SaaS endpoints Design, deploy, and monitor event-driven integration patterns using Azure Logic Apps, Functions, and Service Bus to manage transactional data ...

Keynes Completion of the Data Model and source-to-target mapping. Expert in SAP Successfactord Defining what data exists in the legacy systems versus what will be held within SuccessFactors. Data transformation and automation. Template preparation and validation. Data extraction and reconciliation. Mock 2 execution and defect … Production Load planning and execution. Data cleansing activities. Identification of data that will not be migrated to SuccessFactors. Archive and retention strategy for legacy data. Legacy system decommissioning planning. Post-load reconciliation and business sign-off. Please apply ASAP to save disappointment If you receive suspicious ...

role Our client is looking to appoint a QA Analyst who can take real ownership of quality across a suite of business-critical systems, with a particular emphasis on performance, scalability, and system resilience as the organisation evolves its technology landscape. This role will sit at the centre … scale within an increasingly modern, Azure-led environment. It will suit someone who is comfortable working across both legacy and cloud-based systems, and who can bring structure, rigour, and measurable performance standards to how quality is defined and delivered. From day one, you'll be embedded ...

countries. This role will play a critical part in improving the quality, consistency, and reliability of HR data across Workday, legacy HR systems, finance platforms, and local country data sources. A key focus of this role will be leading HR master data reconciliation, root cause analysis … data structures, reporting, and HR master data management. HR Data Quality & Reconciliation - Extensive experience analysing HR master data across Workday, legacy HR systems, finance systems, and country-level sources to identify mismatches, duplicates, and inconsistencies. Root Cause Analysis - Proven ability to investigate recurring data issues ...

modules. This role will provide dedicated programme management leadership across the technical delivery of the programme, helping to replace a manual and intensive HR systems offering with an integrated, secure and scalable Oracle-based solution. A key focus of the role will be maintaining delivery momentum in a complex … Programme Manager will help ensure the programme delivers the intended operational, financial and strategic benefits, while supporting a smooth transition from legacy systems to the new Oracle HCM environment. This role will require the following experience: Successful experience of delivering Oracle HCM system implementations, ideally within ...

Avanti Recruitment is working with a growing, technology-led business based in Slough, that is undergoing a major systems transformation. As part of this programme, they are looking to hire a Senior .NET/C# Developer to play a key role in evolving a large-scale legacy … projects Agile environments CI/CD practices Testing experience (TDD is a bonus) Exposure to cloud (AWS preferred) Desirable: Experience migrating legacy systems React or JavaScript exposure Experience introducing testing, deployment improvements or modern engineering practices into existing systems would be highly advantageous. AI Exposure/ ...

Avanti Recruitment is working with a growing, technology-led business based in Slough, that is undergoing a major systems transformation. As part of this programme, they are looking to hire a Senior .NET/C# Developer to play a key role in evolving a large-scale legacy … projects Agile environments CI/CD practices Testing experience (TDD is a bonus) Exposure to cloud (AWS preferred) Desirable: Experience migrating legacy systems React or JavaScript exposure Experience introducing testing, deployment improvements or modern engineering practices into existing systems would be highly advantageous. AI Exposure/ ...

Public Sector organisation are seeking a HR Systems Analyst to provide technical analysis and business analysis skills on a HR Systems implementation programme. The HR System Analyst will play a key role in supporting the design, configuration and implementation of new Oracle Cloud HCM platform as part … wider transformation programme. This role will provide specialist technical expertise to help replace the current HR systems landscape with an integrated, secure and scalable Oracle-based solution to further improve the employee, manager and HR experience. Working closely with HR, IT, Finance, project resources and 3rd party specialists ...

Define, design, and govern the end-to-end technical architecture across cloud and on-premise systems, ensuring scalability, security, maintainability, and alignment with business and enterprise architecture objectives. The role is responsible for establishing Azure-based solution architectures, guiding delivery teams, and ensuring that technology decisions drive long-term … solution architectures across applications, data, integrations, and infrastructure within Microsoft Azure environments Define architectural patterns for cloud-native, hybrid, and distributed systems Develop high-level and low-level designs (HLD/LLD), ensuring clarity for delivery teams Ensure solutions are scalable, resilient, secure, and cost-optimised Azure Cloud Architecture ...

multi-vendor delivery environments. Knowledge of Agile delivery methodologies and modern software development practices. Desirable Experience leading enterprise application modernisation programmes. Experience delivering legacy system decommissioning initiatives. Knowledge of enterprise architecture frameworks such as TOGAF. Microsoft Azure and Dynamics 365 certifications. Experience within membership organisations, professional bodies ...

Lead Data Engineer Hands-on technical leadership building data systems that actually work We're looking for a Lead Data Engineer to join an enterprise data engineering capability and play a critical role in designing, building, and improving real-world data systems . This is not a line … engineers and adjacent roles through design decisions, code, and delivery support Improve data sharing, onboarding of new data sources, and interoperability across teams and systems Introduce and evaluate new tools, patterns, and technologies where they genuinely add value - balancing innovation with pragmatism Build robust, production-grade solutions , not proofs ...

trusted technology partner to major NHS Trusts , with its platform now widely used by clinicians across the UK. Replacing outdated legacy systems with intuitive, user-centric tools, they are improving how healthcare teams operate and ultimately enhancing patient outcomes. With multiple industry awards , major contracts secured … platform and wider engineering function. Youll join a high-performing team of 20+ engineers , working on a mix of greenfield and evolving systems , contributing across a full-stack, microservices architecture . This is more than just a coding role its an opportunity to build technology that directly improves lives ...

sprint goals. Your new development will be done within a Microservices architecture, but you will also be contributing to our legacy systems while we are in the transition period. Our stack runs on Azure including Front Door, App Services, Application Insights, and App Configuration with SQL Server ...

delivery processes. Led the build-out and ongoing evolution of high-traffic Ruby on Rails platforms supporting significant commercial throughput. Modernised legacy systems while ensuring uninterrupted business operations. Introduced AI-powered enhancements to improve customer journeys and internal operational efficiency. Collaborated with stakeholders across pricing, quoting ...

Level 1 (Level 2 desirable) Experience delivering enterprise-scale integrations Integration experience with Salesforce, SAP, ServiceNow, AWS/Azure, databases, and legacy systems Knowledge of API security (OAuth 2.0, JWT, mTLS/SSL/TLS) Familiarity with CloudHub v2.0, Runtime Fabric, and hybrid architectures Why Apply Fully ...

technical solutions. Nice to have: Experience working in secure or highly regulated environments. Knowledge of secure coding practices and compliance standards. Experience supporting legacy and modern hybrid systems. If you're interested in this role, click 'apply now' to forward an up-to-date copy of your ...

well underway on a major data transformation, with Microsoft Fabric at the core of its data platform, with continued migration away from legacy systems. With continued investment across Fabric, CRM (Dynamics 365), automation, this role offers a seat at the table to help shape how data is engineered … work with stakeholders to identify data gaps, translate requirements into practical solutions Comfortable working in environments that include both modern platforms, legacy systems Apply now Interviews are already underway, so if interested, apply as soon as possible. . ...

need Engineers to support the transformation and the future growth of the business, simplifying our IT architecture by removing our legacy systems and delivering new solutions providing market-leading services for our colleagues, customers and advisers. What you'll do The Engineer is responsible for the design … decision-making skills. Excellent time and self-management through effective planning & prioritisation of tasks Desirable Skills: Azure PaaS M-Files Experience with distributed systems (SOA, Microservices ...

delivery processes. Led the build-out and ongoing evolution of high-traffic Ruby on Rails platforms supporting significant commercial throughput. Modernised legacy systems while ensuring uninterrupted business operations. Introduced AI-powered enhancements to improve customer journeys and internal operational efficiency. Collaborated with stakeholders across pricing, quoting ...

well into a major data transformation programme, with Microsoft Fabric at the heart of its modern data platform and continued migration away from legacy systems. With ongoing investment across Microsoft Fabric, Dynamics 365 (CRM) and automation, this role offers an opportunity to help shape how data is engineered … engage with stakeholders, identify data gaps, and translate requirements into practical solutions Comfortable working in environments that combine modern platforms with legacy systems Apply now Interviews are already underway, so early application is recommended. ...

site 3 days a week) Salary: £750 - £800 per day (Inside IR35) Skills: Python/C++/Legacy Modernisation/Complex Systems, MOD DV Clearance We are looking to recruit a MOD DV Cleared Senior Software Engineer for a leading technology consultancy delivering complex software engineering, maintenance … software Supporting architecture changes as requirements evolve Helping modernise codebases, tooling and engineering standards The role requires someone who is comfortable working across established systems, improving existing code and supporting other engineers through mentoring, review and technical leadership. Key Responsibilities Lead hands-on software maintenance, enhancement and upgrade work ...

major system overhaul for a leading organisation in thier sector. You’ll be the person who makes sense of chaos—consolidating data from multiple systems into one, streamlined Salesforce platform. If you thrive on variety, want to work with a professional team that values quick decision-making, and enjoy … outside IR35. Reporting to the Group Financial Controller, you will be responsible for: Reviewing and analysing thousands of records across multiple legacy systems Identifying, cleansing, and preparing data for migration Assessing data formats and planning transfer methods Consolidating and mapping information for the new Salesforce platform Investigating ...

prompt engineering frameworks, AI workflows and retrieval-based solutions Collaborate with software engineers, data teams and external partners to create scalable, production-ready AI systems Help establish best practices around AI development, governance and responsible AI usage Contribute to the wider AI strategy and identify opportunities to drive adoption … Central London Private healthcare Strong pension contribution Opportunity to work on high-impact AI initiatives Modern technology environment with minimal legacy systems Collaborative engineering culture with significant investment in AI Apply Now If you're looking for an opportunity to work on meaningful AI projects within ...

working with a modern insurance business that's been built with a strong focus on technology from day one. No legacy systems, no outdated processes and no treating tech as an afterthought. They're well-funded, growing quickly and have put AI at the centre … current development processes and identifying where AI can add real value Driving prompt engineering and more modern, AI-led approaches to building and improving systems What they're looking for Experience within insurance or financial services (this doesn't need to be purely technical) Hands-on prompt engineering experience ...