1 to 25 of 74 Legacy Systems Jobs in the South East

in supporting underserved segments of the mortgage market. Two years ago, they embarked on an ambitious journey to modernise their operations, initiating a massive migration from legacy systems to a cutting-edge cloud environment (Azure). You'll be joining a forward-thinking organisation committed to leveraging technology to enhance its services and operational efficiency. THE ROLE … will lead a large and dynamic team of approximately 30 Data Engineers across multiple locations. Your primary responsibilities will include: Leading Cloud Migration: Overseeing the strategic migration of legacy databases (primarily SQL Server) to the Azure cloud platform. Team Leadership: Managing multiple Data Engineering teams, ensuring continued delivery of legacy projects while simultaneously driving the adoption … leaders across the data office, including the CTO and CIO, to ensure alignment. Third-Party Management: Effectively managing relationships with key third-party partners supporting both legacy systems and modernisation efforts. YOUR SKILLS AND EXPERIENCE: The ideal Head of Data Engineering will have: Proven Leadership: Extensive experience leading large Data Engineering teams, including managing multiple teams and More ❯

Senior .NET/C# Developer Oracle to PostgreSQL Migration: Our client is embarking on a strategic transformation of a legacy enterprise platform, rebuilding a … long-standing PHP and Oracle-based system into a .NET (C#) and PostgreSQL architecture. Seeking talented developers who are excited to work at the intersection of legacy systems, modern architecture and cutting-edge development tooling. Your Responsibilities: Re-engineer Oracle PL/SQL logic into performant and maintainable C# services. Design and build .NET components that interact … strategies and support comprehensive documentation efforts. What You'll Bring: Experience developing in .NET/C#, particularly in backend and data access layers. Proven success migrating legacy systems, especially from Oracle to PostgreSQL or similar. Strong working knowledge of Oracle PL/SQL and the ability to translate procedural logic into C#. Solid experience with PostgreSQL, including More ❯

ongoing evolution of key platforms in collaboration with cross-functional teams. For this, they are looking for a technically confident developer who's comfortable working across a range of systems, technologies, and business needs. Key Responsibilities: Participate in the design, enhancement, and migration of legacy systems built in C#, VB, and Angular, using MySQL, PostgreSQL, and … maintainability, and ongoing evolution. Contribute to the implementation of modern architectures: microservices, containerised services, and serverless cloud-native components in AWS. Diagnose and resolve complex support issues in legacy applications. Contribute to Agile processes using KANBAN, ensuring transparency and delivery alignment. Document architecture decisions, deployment processes, and codebase changes clearly and thoroughly. Skills & Experience: Expertise in backend development … Javascript, HTML, CSS Strong database skills with SQL Server, MySQL, and PostgreSQL Familiarity working within a cloud environment, particularly AWS or Azure Experience maintaining and modernising legacy systems Experience working in a client-facing or business-facing technical role This is a full-time, permanent role, offering a starting salary up to £65,000 (Depending on experience More ❯

Apply online only) per day Inside IR35 Contract role for an experienced Business Data Analyst required to support a large-scale transformation programme, focused on replacing legacy systems with Salesforce CRM and delivering strategic improvements to customer data. You'll bring proven experience in data analysis, data mapping, and data migration projects within CRM or enterprise system … strong advantage. This role is for a proactive and detail-oriented Data Analyst to support a major CRM and customer data transformation, including the migration from legacy systems to Salesforce. This role will focus on analysing customer data, documenting legacy structures, identifying data quality issues, and supporting data mapping, cleansing, validation, and reconciliation activities. Working … driving insight, enabling CRM optimisation, and ensuring the integrity and successful delivery of customer data throughout the migration process. Experience Required: Proven experience supporting data migration projects, including legacy data analysis and transformation. Familiarity with data governance frameworks, including stewardship, ownership, and quality monitoring. Proficiency in SQL, Excel, python and data visualisation tools (e.g., Power BI, Tableau). More ❯

Our client an industry leading private sector business located in East Sussex is looking for a full stack .Net developer. Key Roles Participate in migration of legacy systems built in C#, VB.NET, Angular/TypeScript, using MySQL, PostgreSQL, and SQL Server technologies. Maintaining applications, ensuring reliability, maintainability, and evolution. Act as a liaison between the development team … Angular, TypeScript, JavaScript, HTML, CSS. SQL Server, MySQL, and PostgreSQL. AWS or Azure. Experience in a client-facing or business-facing technical role. Maintaining and modernising legacy systems, including VB.NET. Communication skills to engage confidently with non-technical stakeholders. Knowledge of Docker, CI/CD pipelines, GitHub, and Azure DevOps Reasonable Adjustments: Respect and equality are core More ❯

the existing team to re-engineer Oracle PL/SQL stored procedures into C# services. Design and implement .NET-based components that integrate with both legacy PHP systems and new PostgreSQL databases. Work closely with business analysts and stakeholders to ensure functional parity and identify opportunities for enhancement. Participate in the design of a hybrid architecture that … Skills & Experience 5+ years of experience in .NET/C# development, with a strong focus on backend services and data access layers. Proven experience in migrating legacy systems, especially from Oracle to PostgreSQL or similar. Strong understanding of PL/SQL and experience translating stored procedures into application logic. Familiarity with PostgreSQL, including performance tuning and SQL … dialect differences. Experience working in hybrid environments where legacy and modern systems coexist. Comfortable using AI tools (e.g., GitHub Copilot, ChatGPT, code translators) to assist in development and migration tasks. Solid understanding of software architecture, design patterns, and integration strategies. Excellent communication skills and ability to work collaboratively in a cross-functional team. Desirable Skills Experience with More ❯

business that is in the middle of an exciting technology transformation. They are seeking a Senior .NET Developer to take a leading role in modernising their legacy systems and driving AI adoption across the company. This is a fantastic opportunity for someone passionate about technology evolution, AI tooling, and delivering clean, modern code. You’ll help replace … to a React front end (already 50% there!) Mentoring and supporting other developers while ensuring best practices Collaborating with IT and product teams to redesign and modernise core business systems Participating in architecture discussions, code reviews, and deployment strategy Writing maintainable, well-documented code and implementing scalable solutions What We’re Looking For: 5+ years of .NET development experience … with proven modernisation/migration projects Experience moving from legacy systems (VB.NET) to modern stacks Strong knowledge of C#, .NET Core, SQL Server, REST APIs, and cloud environments Hands-on experience using AI developer tools like GitHub Copilot or ChatGPT Passion for clean code, architecture, and technical leadership Strong communication skills and a collaborative mindset Why Join More ❯

actionable insight? We're looking for a Salesforce Data Analyst to support a major Enterprise Data transformation programme, playing a key role in the migration from legacy systems to the new Salesforce platform. As a Salesforce Data Analyst, you will support the successful delivery of our customer and CRM data strategy as part of a multi-year … transformation. In the early phase of the project, you'll be responsible for documenting current ('as-is') data structures, analysing legacy CRM systems, and identifying data quality issues and migration requirements. You will work across multiple teams to ensure data integrity, support effective data governance, and drive data quality during and after migration. This role is essential … processes Skills & Experience Strong background as a Data Analyst, with a focus on customer and CRM data Proven experience in data migration projects, particularly involving legacy CRM systems and Salesforce Hands-on experience with SQL, Excel, Python, and visualisation tools (Power BI or Tableau) Familiarity with Salesforce data models (Leads, Opportunities, Contacts, Accounts) Experience with Snowflake is More ❯

benefits An established, financial services group is on the lookout for a Head of Data Engineering to lead their data platform transformation - a critical migration from legacy systems (SQL Server) to modern Azure cloud technologies. You'll oversee a 40-person team of engineers (across the UK and offshore), guide delivery of critical regulatory and treasury projects … banking/financial services sector Strategic mindset with a delivery-focused leadership style Tech Environment: Azure Data Stack (Synapse, Databricks, Azure SQL, Power BI) SQL, Python Legacy systems primarily in SQL Server Interview Process: Initial 30-minute informal converdation 60-minute technical/competency interview with Engineering Managers Final 90 minute session with senior leadership (CDO, CTO More ❯

for application-related queries, triaging and resolving issues while working closely with departmental heads to improve user satisfaction and productivity. You will lead the migration from legacy systems such as ShareFile to modern platforms like SharePoint, guiding users through significant change and embedding new ways of working. You will also support business transformation projects, manage supplier relationships … Applications Manager, you will: Manage and support the Microsoft technology stack, including SharePoint, Copilot, and other SaaS applications such as Adobe and SendGrid Lead migration from legacy systems like ShareFile to modern platforms such as SharePoint Act as the primary internal contact for application-related queries, resolving issues efficiently Engage with heads of department to understand needs … should have experience with the following: Microsoft 365 suite, particularly SharePoint and Teams SaaS application management, including tools such as Adobe Creative Cloud and SendGrid Service desk and ticketing systems, preferably Freshdesk or similar Understanding of software development life cycles (SDLC) and supplier management Awareness of IT security principles and best practices Ability to promote and support adoption of More ❯

C#) architecture and we're looking for an experienced Oracle Developer to play a key role in this journey. You'll work at the intersection of legacy systems and new architecture, translating complex logic into scalable, maintainable C# code. What You'll Be Working On: Rewriting complex PL/SQL logic into performant, readable C# code. Decoupling … types into .NET equivalents, ensuring performance and integrity. Collaborating on the migration from Oracle to Postgres or MySQL. Supporting a hybrid environment during rollout, where legacy Oracle systems and new .NET components coexist. Utilising AI-assisted tools for code analysis, documentation, and transformation. What We're Looking For: Oracle PL/SQL experience, including deep expertise in … in database migration from Oracle to Postgres or MySQL. Excellent analytical and problem-solving skills, with strong attention to detail. Clear communication skills with the ability to explain complex systems and document processes. Desirable Experience: Experience working with PHP systems that integrate with Oracle databases. Familiarity with AI-assisted development tools. Background in data modelling, version control of More ❯

SAP Project Systems - Sr Manager IT Architecture page is loaded SAP Project Systems - Sr Manager IT Architecture Apply locations United Kingdom - Uxbridge posted on Posted Yesterday job requisition id R At Gilead, we're creating a healthier world for all people. For more than 35 years, we've tackled diseases such as HIV, viral hepatitis, COVID-19 and … work environment where our differences are valued, and everyone feels respected and empowered to bring their authentic selves to work. Job Summary The role for S4/Hana Projects Systems will drive successful business process improvement and technical resolution of emerging Project system issues and requests. The role will partner with business subject matter experts and managers in the … areas of Report-to-Record, Projects, Source-to-Settle, and Plan-to-Deliver. Essential Duties and Job Functions: Understand the SAP Project systems technology landscape and how it affects the business operations Interact with business to understand business requirements to conclude solutions, configuration, testing and support Demonstrated track record of implementing Project solutions in more than couple of projects More ❯

responsiveness and customer service. Responsibilities Assists in the solving of business problems by providing detailed personal advice and guidance to all levels of users in the expert use of systems, products and services available to them; demonstrates ingenuity in applying knowledge to complex and non-standard situations. Assists users experiencing difficulties in using information systems, products or services … potential solutions with service providers and implements agreed field modifications or workarounds. In consultation with users, demonstrates all features, plans requirements, installs (including field modification) and commissions desk-top systems, products and services and their upgrades. Ensures that all requests from users for assistance are handled promptly and effectively; is pro-active to ensure that users make effective use … complaints are responsibly and professionally resolved. Regularly monitors the incidence, status and speed of resolution of enquiries and problems; is pro-active in devising improvements and recommending changes to systems, products or services. Provides users with information on the medium and long-term plans and policies of the organisation for the provision of desk-top systems, products and More ❯

tackle complex challenges using tools like Hadoop, Spark, and modern visualisation frameworks while implementing automation that drives government efficiency. You'll collaborate with stakeholders to transform legacy systems, implement data governance frameworks, and ensure solutions meet the highest security standards. Our deep expertise in public sector digital transformation and established presence across defence and government organisations offer … unique opportunities to shape the future of UK public services through innovative data-driven solutions. With our strong technical foundation and focus on mission-critical systems, you'll be part of a team delivering nationally significant projects that have a real impact on public service delivery. If you're passionate about applying cutting-edge data science and engineering in … you will: Data Engineering Focus: Design, implement, and maintain scalable data pipelines and ETL processes Develop and maintain data warehouses and data lakes Implement data quality monitoring and validation systems Create and maintain data documentation and cataloguing systems Optimize data storage and retrieval systems Implement data security and governance frameworks Build and maintain data APIs and services More ❯

provide technical guidance and oversight of customisations, including plugins, workflows, Power Automate flows, and JavaScript, ensuring efficient, reusable, and well-documented code.* Integrate D365 CE with other applications and systems using tools like Azure Logic Apps, Power Automate, and custom APIs.* Oversee the Dynamics 365 environment to enable the successful delivery of their Digital Transformation.* Manage and control D365 … and maintenance for D365 CE applications, troubleshoot issues, and implement fixes and enhancements.* Assist in data migration tasks, ensuring accurate and secure transfer of data from legacy systems to D365 CE* Collaborate with cross-functional teams, including business analysts, project managers, and other developers, to deliver high-quality solutions.* Stay updated with the latest D365 CE features More ❯

a growing Software Consultancy/MSP. As a Senior Developer/Consultant you will work with a long established client to help them modernise and transform legacy systems to modern microservices, cloud based solutions to support business growth. You'll collaborate with the client to understand their business needs and take a lead role in developing and … three times per month. About you: You are an experienced Software Developer/Consultant with strong C# .Net Core skills You have experience with API development, microservices, Cloud based systems (AWS, Azure or GCP) You have a thorough understanding of Computer Science fundamentals such as OOP, Design Patterns, Data Structures You have excellent communication and collaboration skills and are More ❯

for patients and healthcare professionals. Why This Role Now? EU Expansion: Harmonise architecture across jurisdictions with varying compliance, data residency, and operational models. Platform Unification: Consolidate legacy systems into a modular, reusable platform architecture. Digital Acceleration: Enable rapid product development without compromising interoperability, governance, or safety. Cross-Functional Collaboration: Act as a unifying technical voice across Product … to articulate a future-state architecture aligned with business strategy. Principles-led Design: Grounded in sound architectural principles, not just trends. System Thinker: Views architecture as a system-of-systems — from infrastructure to UX. Pragmatic Execution: Balances scalability with lean governance; avoids overengineering. Strong Collaborator: Influences across disciplines and senior stakeholders. Regulatory Awareness: Experience designing within regulated environments (e.g. More ❯

and Access Management (IdAM), and overall access governance.This role will collaborate closely with cyber security, engineering, and business stakeholders, ensuring the delivery of secure, modern platforms to replace legacy systems. Candidates based in the UK, able to work in a hybrid model (two days per week in either our London or Nuneaton office), are strongly preferred. The Role … new store and enterprise features. Technical Execution Ensure agile delivery of high-quality, secure solutions using Scrum, SAFe, or other scaled agile frameworks. Guide transitions from legacy systems to secure modern platforms with minimal disruption. Monitor and support post-implementation phases, addressing access issues, incidents, or escalations. Initial Objectives (First 3 Months) Establish and lead a comprehensive More ❯

and validate the processes that will be used with the new system Data migration: Identifying, cleansing and validating the data which we will need to extract from our legacy system for migration into the new system and ensuring the data is extracted and manipulated into the new format Proactively identifying and managing project risks and issues, ensuring minimal More ❯

and establish a modern, scalable, and secure technology platform that supports their long-term goal. This role will be instrumental in managing the transition away from legacy systems, introducing new platforms, and shaping the future direction of IT across the organisation. This role will require 5 days per week in the Redhill office. * Salary … technology, operations, and strategic business objectives. * Define and deliver the technology strategy to support modernisation and growth * Lead the phased migration from legacy platforms .NET to modern systems * Introduce best practices across architecture, integration, and security * Oversee end-to-end delivery of major technology transformation initiatives * Manage cross-functional teams through complex change, including cultural and technical … Manage relationships with external vendors, consultants, and delivery partners * Foster a culture of collaboration, accountability, and continuous improvement * Guide system selection, data architecture, API strategy, cloud adoption, etc * Ensure systems are secure, well-documented, and compliant with industry standards * Drive innovation through automation, analytics, and user-focused tools * Work closely with senior leadership and operational teams to understand needs More ❯

Borehamwood, seeking an experienced Software Developer to join our small but growing team in progressing the development of our bespoke software, and supporting the migration of legacy systems to the new architecture. As a key member of our team the Software Developer will play a pivotal role in shaping the platform and services that support a suite … of mobile and web applications. Your responsibilities will include designing and developing robust, scalable, and secure backend systems, providing technical expertise across multiple squads as well as defining and enforcing the standards that ensure their integrity and compliance. Software Developer - Required Skills and Experience Good Knowledge of .Net Framework and .Net Core. Develop applications using C#. These are mainly More ❯

healthcare providers. We bring together technology, data, and human-centred design to improve patient experiences, streamline clinical workflows, and enable smarter decision-making. Our work supports delivering integrated care systems, interoperable platforms, cloud-native solutions, and AI-powered tools built around user needs. The role We're looking for an Enterprise Solution Architect to join our growing team and … Contribute to business case development and procurement processes by advising on architectural trade-offs. Maintain awareness of emerging technologies and advise clients on opportunities to modernise legacy systems or adopt innovation responsibly. Champion architecture best practices and coach other team members on digital health architecture principles. Required skills and knowledge Proven expertise in enterprise or solution architecture … to technical and non-technical audiences. Strong stakeholder engagement and communication skills across clinical, business, and technical teams. Experience working on projects related to Community Diagnostic Centres, Integrated Care Systems, or Electronic Patient Records. Understanding of AI, ML, and data analytics applications in healthcare. Exposure to openEHR, IHE profiles, and OpenAPI specifications. TOGAF, BCS, or relevant architecture certification. Experience More ❯

myairops. This is a hands-on technical role, with around 80% of your time focused on personally delivering customer data migrations; transforming and onboarding customer data from third-party systems into the myairops platform. The remaining 20% of your time will provide technical leadership to the wider data engineering function. Youll help set and maintain standards across all migration … as part of their onboarding journey. Work with stakeholders to define, validate, and document migration requirements. Transform, map, and load customer data from third-party or legacy systems into the myairops platform. Develop and maintain onboarding scripts and tooling to support repeatable, high-quality data processing. Ensure data quality and accuracy, validating outcomes and addressing anomalies early. More ❯

Access Developer - Hybrid (1-2 days in HQ) - £60,000-70,000 + benefits This role will take ownership of a legacy product developed in Microsoft Access (Front End) and SQL. The successful candidate will maintain, document, and optimise the current product, whilst - in due course (and in partnershp with a 3rd party) - design, develop, and implement reusable … based platform. Maintain and optimise the existing Access database, ensuring its reliability and efficiency. Produce comprehensive, high-level technical documentation, ensuring code is well-commented and maintainable. Rewrite legacy services to ensure they are modular and reusable in future system developments. Review and refine the SQL database, focusing on building a robust relational database model. Access Developer - Essential … monitoring. Familiarity with the wider Microsoft technology stack/C# and .NET. Business process analysis and optimisation experience. Access Developer - Skills and qualifications: Skilled in managing legacy systems while facilitating modernisation efforts. Strong documentation and communication skills. Ability to work independently and collaboratively across hybrid work environments. In return for joining, you will be provided with industry More ❯

brands, known for its strong retail roots and customer-first ethos. We're looking for a Product Owner to lead a major transformation initiative: the migration of a legacy private cloud estate to a modern Azure-based platform. This is a 12-month contract based in Slough, with 2 flexible on-site days per week (no anchor days … . Your Mission: You'll be at the heart of a strategic programme to modernise critical infrastructure. The client is currently operating on a legacy private cloud setup, including SQL Server and file servers. Your role will focus on driving the migration to Azure Cloud - improving scalability, efficiency, and resilience across the business. Key Responsibilities: Lead the Cloud … experience as a Product Owner or Product Manager in cloud transformation or infrastructure modernisation projects Strong understanding of Azure cloud services and migration strategies Familiarity with legacy systems such as SQL Server and file servers Excellent stakeholder management and facilitation skills Strong grasp of agile methodologies, particularly Scrum Experience in telecoms, retail, or digital platforms is a More ❯