1 to 25 of 196 Legacy Systems Jobs in the UK excluding London

mission-critical data migration projects. You'll be part of an expert unit supporting onboarding for a new cloud platform - working directly with raw datasets from legacy systems and transforming them into future-ready digital infrastructure. What You'll Be Doing: Leading data migration and ETL projects for UK public sector software implementations Analysing and mapping legacy database schemas (Oracle, SQL Server, Postgres) Extracting raw data from legacy systems, often with limited documentation Writing and executing SQL scripts and/or using ETL tools to build data pipelines Creating transformation logic and performing reconciliation and validation Working closely with customers and internal teams to troubleshoot and ensure smooth migrations This role is … Problem-solving mindset when facing incomplete or messy data A consulting approach - proactive, collaborative, and detail-driven Nice to Have: Experience with UK Local Government datasets or public sector systems Familiarity with cloud platforms (Azure, AWS, GCP) Knowledge of spatial data tools (ArcGIS, QGIS) Experience with document management systems and data validation processes What's in it for More ❯

something special to the table, including you! So, even if you feel that you're close but not an exact match, we encourage you to apply. Overview The Business Systems Migration Analyst is tasked with managing and executing data migration workstreams within the Acturis insurance software platform. This role is crucial in ensuring the accurate and efficient transfer of … data from legacy systems to Acturis, while maintaining data integrity throughout the process. In this role you will support the overall implementation process, playing a key role in the successful transition to the Acturis platform. If you have a keen eye for detail and are skilled in data migration, we encourage you to apply. How you'll … and risk assessments. Compare legacy and target functionality with an open mind, adopting a best practice approach. Data Extraction and Transformation : Extract data from legacy systems using appropriate tools and techniques. Transform and cleanse data to ensure compatibility with Acturis platform requirements. Data Loading and Validation : Load transformed data into Acturis, ensuring accuracy and completeness. More ❯

Systems Engineering Lead Location: Farnborough, with flexibility to work from home dependent on business demands The Role: We are in search of a Systems Engineering Lead for our Leidos engineering capability. The successful Systems Engineer will have a full understanding of the principles of systems engineering, will have prior experience as a Systems Engineer on … a major programme involving accepting and integrating deliveries from suppliers. As a Systems Engineer in Leidos, you will be immersed in one of our key programmes transformation from legacy systems to cloud. On behalf of our central government customer, you will have direct impact on the current and future iterations of one of our most important … pieces of critical national infrastructure. If this sounds like the kind of environment where you can thrive, keep reading! Using your experience in Systems Engineering, you will be responsible for working with customers and suppliers to execute/lead Systems Engineering activities across the full lifecycle. What Youll Be Doing: Leader of a high-performing team to deliver More ❯

Systems Engineering Lead Location: Farnborough, with flexibility to work from home dependent on business demands The Role: We are in search of a Systems Engineering Lead for our Leidos engineering capability. The successful Systems Engineer will have a full understanding of the principles of systems engineering, will have prior experience as a Systems Engineer on … a major programme involving accepting and integrating deliveries from suppliers. As a Systems Engineer in Leidos, you will be immersed in one of our key programmes transformation from legacy systems to cloud. On behalf of our central government customer, you will have direct impact on the current and future iterations of one of our most important … pieces of critical national infrastructure. If this sounds like the kind of environment where you can thrive, keep reading! Using your experience in Systems Engineering, you will be responsible for working with customers and suppliers to execute/lead Systems Engineering activities across the full lifecycle. What Youll Be Doing: Leader of a high-performing team to deliver More ❯

Senior AI Developer £80,000 + bonus + benefits International eCommerce organisation is looking for a Senior AI Developer to lead the modernization of core systems using AI to improve performance and efficiency. We need a highly skilled Lead Developer with proven experience migrating legacy systems and implementing AI-powered solutions. Experience with modern languages and … frameworks is a plus. About the Role: Play a pivotal role in transforming technology stack and driving the adoption of AI-powered tools to enhance development workflows. Modernising critical systems and implement intelligent solutions that support business growth. Key Responsibilities: Lead the migration of legacy systems to a modern tech stack (cloud platforms, APIs) Design and … teams to redesign and improve core business applications Mentor junior developers, fostering a culture of continuous learning and innovation Essential Skills: 5+ years’ software development experience, including significant legacy system modernization Relational database expertise (e.g., Microsoft SQL Server) Familiarity with REST APIs and cloud infrastructure Hands-on experience with AI-based developer tools (e.g., GitHub Copilot, ChatGPT, Tabnine More ❯

a wide variety of projects across both modern and legacy systems. Unlike companies where engineers spend years on the same product, this business offers exposure to diverse systems and infrastructures, from short-term initiatives to large-scale programmes. Following a recent restructure, the development function has been unified into a single, collaborative team. This creates a unique … remain hands-on, contributing across the full stack and helping deliver high-quality solutions. The position is varied, offering the chance to work across modern and legacy systems, cloud platforms, and a broad technology stack. It’s an excellent opportunity for someone who enjoys balancing coding and leadership responsibilities. Key Skills: Essential Strong background in C# software … MSSQL, Postgres, or equivalent) Proven track record in leading and mentoring developers Broad technical foundation with ability to work across frontend and backend Desirable RabbitMQ or other message broker systems HTML, CSS, JavaScript (React or Vue desirable) Redis, APIs, Git, Bootstrap, SOLR (or equivalent) Experience with both modern and legacy systems Candidate Profile: Senior engineer with More ❯

year to support and empower millions of people. We're looking for a Software Engineer to join our development and maintenance teams and help keep the UK's welfare systems secure, reliable, and ready for the future. You'll support critical services and play a key role in modernising legacy systems as we move to cloud … freedom and autonomy. We write code and make decisions which shape the future engineering landscape of DWP. As part of our Development and Maintenance team, you'll ensure legacy platforms remain secure and reliable while supporting their evolution into scalable, cloud-based services. You'll tackle incidents, implement essential changes, and integrate modern technologies to improve resilience, automation … Java, C/C++, .NET and JavaScript. This is a unique opportunity to be at the heart of digital change in government, balancing the stability of legacy systems with the innovation of modern engineering. You'll be part of a supportive engineering community of over 200. We'll give you the tools and time to build your More ❯

year to support and empower millions of people. We're looking for a Software Engineer to join our development and maintenance teams and help keep the UK's welfare systems secure, reliable, and ready for the future. You'll support critical services and play a key role in modernising legacy systems as we move to cloud … freedom and autonomy. We write code and make decisions which shape the future engineering landscape of DWP. As part of our Development and Maintenance team, you'll ensure legacy platforms remain secure and reliable while supporting their evolution into scalable, cloud-based services. You'll tackle incidents, implement essential changes, and integrate modern technologies to improve resilience, automation … Java, C/C++, .NET and JavaScript. This is a unique opportunity to be at the heart of digital change in government, balancing the stability of legacy systems with the innovation of modern engineering. You'll be part of a supportive engineering community of over 200. We'll give you the tools and time to build your More ❯

year to support and empower millions of people. We're looking for a Software Engineer to join our development and maintenance teams and help keep the UK's welfare systems secure, reliable, and ready for the future. You'll support critical services and play a key role in modernising legacy systems as we move to cloud … freedom and autonomy. We write code and make decisions which shape the future engineering landscape of DWP. As part of our Development and Maintenance team, you'll ensure legacy platforms remain secure and reliable while supporting their evolution into scalable, cloud-based services. You'll tackle incidents, implement essential changes, and integrate modern technologies to improve resilience, automation … Java, C/C++, .NET and JavaScript. This is a unique opportunity to be at the heart of digital change in government, balancing the stability of legacy systems with the innovation of modern engineering. You'll be part of a supportive engineering community of over 200. We'll give you the tools and time to build your More ❯

year to support and empower millions of people. We're looking for a Software Engineer to join our development and maintenance teams and help keep the UK's welfare systems secure, reliable, and ready for the future. You'll support critical services and play a key role in modernising legacy systems as we move to cloud … freedom and autonomy. We write code and make decisions which shape the future engineering landscape of DWP. As part of our Development and Maintenance team, you'll ensure legacy platforms remain secure and reliable while supporting their evolution into scalable, cloud-based services. You'll tackle incidents, implement essential changes, and integrate modern technologies to improve resilience, automation … Java, C/C++, .NET and JavaScript. This is a unique opportunity to be at the heart of digital change in government, balancing the stability of legacy systems with the innovation of modern engineering. You'll be part of a supportive engineering community of over 200. We'll give you the tools and time to build your More ❯

year to support and empower millions of people. We're looking for a Software Engineer to join our development and maintenance teams and help keep the UK's welfare systems secure, reliable, and ready for the future. You'll support critical services and play a key role in modernising legacy systems as we move to cloud … freedom and autonomy. We write code and make decisions which shape the future engineering landscape of DWP. As part of our Development and Maintenance team, you'll ensure legacy platforms remain secure and reliable while supporting their evolution into scalable, cloud-based services. You'll tackle incidents, implement essential changes, and integrate modern technologies to improve resilience, automation … Java, C/C++, .NET and JavaScript. This is a unique opportunity to be at the heart of digital change in government, balancing the stability of legacy systems with the innovation of modern engineering. You'll be part of a supportive engineering community of over 200. We'll give you the tools and time to build your More ❯

year to support and empower millions of people. We're looking for a Software Engineer to join our development and maintenance teams and help keep the UK's welfare systems secure, reliable, and ready for the future. You'll support critical services and play a key role in modernising legacy systems as we move to cloud … freedom and autonomy. We write code and make decisions which shape the future engineering landscape of DWP. As part of our Development and Maintenance team, you'll ensure legacy platforms remain secure and reliable while supporting their evolution into scalable, cloud-based services. You'll tackle incidents, implement essential changes, and integrate modern technologies to improve resilience, automation … Java, C/C++, .NET and JavaScript. This is a unique opportunity to be at the heart of digital change in government, balancing the stability of legacy systems with the innovation of modern engineering. You'll be part of a supportive engineering community of over 200. We'll give you the tools and time to build your More ❯

year to support and empower millions of people. We're looking for a Software Engineer to join our development and maintenance teams and help keep the UK's welfare systems secure, reliable, and ready for the future. You'll support critical services and play a key role in modernising legacy systems as we move to cloud … freedom and autonomy. We write code and make decisions which shape the future engineering landscape of DWP. As part of our Development and Maintenance team, you'll ensure legacy platforms remain secure and reliable while supporting their evolution into scalable, cloud-based services. You'll tackle incidents, implement essential changes, and integrate modern technologies to improve resilience, automation … Java, C/C++, .NET and JavaScript. This is a unique opportunity to be at the heart of digital change in government, balancing the stability of legacy systems with the innovation of modern engineering. You'll be part of a supportive engineering community of over 200. We'll give you the tools and time to build your More ❯

year to support and empower millions of people. We're looking for a Software Engineer to join our development and maintenance teams and help keep the UK's welfare systems secure, reliable, and ready for the future. You'll support critical services and play a key role in modernising legacy systems as we move to cloud … freedom and autonomy. We write code and make decisions which shape the future engineering landscape of DWP. As part of our Development and Maintenance team, you'll ensure legacy platforms remain secure and reliable while supporting their evolution into scalable, cloud-based services. You'll tackle incidents, implement essential changes, and integrate modern technologies to improve resilience, automation … Java, C/C++, .NET and JavaScript. This is a unique opportunity to be at the heart of digital change in government, balancing the stability of legacy systems with the innovation of modern engineering. You'll be part of a supportive engineering community of over 200. We'll give you the tools and time to build your More ❯

year to support and empower millions of people. We're looking for a Software Engineer to join our development and maintenance teams and help keep the UK's welfare systems secure, reliable, and ready for the future. You'll support critical services and play a key role in modernising legacy systems as we move to cloud … freedom and autonomy. We write code and make decisions which shape the future engineering landscape of DWP. As part of our Development and Maintenance team, you'll ensure legacy platforms remain secure and reliable while supporting their evolution into scalable, cloud-based services. You'll tackle incidents, implement essential changes, and integrate modern technologies to improve resilience, automation … Java, C/C++, .NET and JavaScript. This is a unique opportunity to be at the heart of digital change in government, balancing the stability of legacy systems with the innovation of modern engineering. You'll be part of a supportive engineering community of over 200. We'll give you the tools and time to build your 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, using SQL Server technologies. Maintaining applications, ensuring reliability, maintainability, and evolution. Act as a liaison between the development team and internal business stakeholders. Implementation … C#) And ideally VB.NET Front-end technologies - Angular, JavaScript, HTML, CSS. SQL Server 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 ❯

partner for a government agency's transformation programme. They are looking for a Lead Technical Architect to join the a high-profile initiative aimed at modernising legacy systems and improving data validation across the client's business gateway. This is a fully remote role, working within a blended agile team of consultancy and end client staff. You … To be considered, you'll need: Strong background in technical architecture within large-scale digital programmes Deep understanding of API Gateway design and enhancement Experience modernising legacy systems and migrating to cloud-native platforms Solid grasp of AWS (API Gateway, Lambda, S3, VPC) Familiarity with Java, DB2, relational databases, and network concepts Desirable experience includes: OpenAPI schemas More ❯

someone who has good programming skills Microsoft programming languages. The team uses cutting edge technology, but you will ideally be versed with a wide variety of legacy systems and migrating away from these to new cutting-edge technology solutions. These positions report to the Integration Lead and Architect and you will be working alongside a team of … . Responsibilities: Design and support all integration processes including migrations to and from new businesses as well as within internal applications and databases. Migrations away from legacy systems into new applications Review, support, feedback and size requirements produced by the Analysis team. Manage your delivery commitments within the relevant sprints to ensure timely and quality delivery of More ❯

someone who has good programming skills Microsoft programming languages. The team uses cutting edge technology, but you will ideally be versed with a wide variety of legacy systems and migrating away from these to new cutting-edge technology solutions. These positions report to the Integration Lead and Architect and you will be working alongside a team of … . Responsibilities: Design and support all integration processes including migrations to and from new businesses as well as within internal applications and databases. Migrations away from legacy systems into new applications Review, support, feedback and size requirements produced by the Analysis team. Manage your delivery commitments within the relevant sprints to ensure timely and quality delivery of More ❯

someone who has good programming skills Microsoft programming languages. The team uses cutting edge technology, but you will ideally be versed with a wide variety of legacy systems and migrating away from these to new cutting-edge technology solutions. These positions report to the Integration Lead and Architect and you will be working alongside a team of … . Responsibilities: Design and support all integration processes including migrations to and from new businesses as well as within internal applications and databases. Migrations away from legacy systems into new applications Review, support, feedback and size requirements produced by the Analysis team. Manage your delivery commitments within the relevant sprints to ensure timely and quality delivery of More ❯

The Opportunity We're partnering with a leading bank on a major transformation programme: the build and migration of a proprietary lending platform that will replace legacy systems and sit at the heart of their future banking operations. This is a high-profile programme where you'll work closely with senior leadership, delivering change that impacts core … leadership, providing visibility, assurance, and strategic direction. What We're Looking For Proven experience as a Programme Manager in banking or financial services . Strong knowledge of core banking systems ; lending platform exposure is highly desirable. Excellent communication and stakeholder management skills - able to influence at executive level. Track record in governance, risk management, and regulatory programmes . Ability … to lead matrixed teams and work across multiple business areas. Comfortable in environments moving from legacy systems to proprietary platforms . RSG Plc is acting as an Employment Agency in relation to this vacancy. More ❯

a complex Oracle Fusion Finance Transformation. As part of this programme, they are seeking an Oracle Project Manager to oversee the technical delivery of integrations between legacy systems and Oracle ERP. The Role: We are looking for a tech-savvy Oracle Project Manager to focus on the end-to-end delivery of Oracle ERP integrations, covering build … and production deployment. This role requires someone who can bring structure, pace, and accountability. Key Responsibilities & Experience: Manage the delivery of inbound and outbound integrations between legacy systems and Oracle ERP (circa 60 integrations and 10 endpoints). Oversee build, testing, release management, and production cutover activities. Lead distributed nearshore and offshore teams, ensuring effective collaboration across … hands-on Agile delivery expertise, including sprint ceremonies and reporting. Strong track record of managing distributed teams across nearshore and offshore models. Beneficial: familiarity with .NET technologies within legacy estates. Role Details: Job Role: Oracle Project Manager Contract: 6 months initially (with high potential for extension) Location: Hybrid – 3 days per week onsite (Midlands) Rate: £500 - £550 per More ❯

platform. This platform will support 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. Key Responsibilities GIS Platform Architecture & Design Lead the end-to-end design of a scalable GIS platform aligned with project strategic … goals Define architecture principles, technology stack, and integration patterns Ensure interoperability with internal and external systems (eg, energy models, environmental databases) Infrastructure Provisioning Design and provision Azure-based environments (Sandbox, Dev, UAT, Production) Ensure high availability, scalability, and security of cloud infrastructure Integrate with peripheral systems to support end-to-end workflows Data Migration & Legacy System … years in GIS platforms Proven experience with Azure cloud infrastructure and DevOps practices Strong understanding of geospatial technologies (eg, ESRI, QGIS, FME, GeoServer) Experience with Legacy GIS systems (Intergraph, Smallworld) and data migration Familiarity with AI/ML applications in geospatial data quality and analytics Agile delivery experience and ability to lead cross-functional teams. Due to More ❯

platform. This platform will support 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. Key Responsibilities: 1. GIS Platform Architecture & Design Lead the end-to-end design of a scalable GIS platform aligned with project … strategic goals. Define architecture principles, technology stack, and integration patterns. Ensure interoperability with internal and external systems (eg, 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 with peripheral systems to support end-to-end workflows. 3. Data … in GIS platforms. Proven experience with Azure cloud infrastructure and DevOps practices. Strong understanding of geospatial technologies (eg, ESRI, QGIS, FME, GeoServer). Experience with Legacy GIS systems (Intergraph, Smallworld) and data migration. Familiarity with AI/ML applications in geospatial data quality and analytics. Agile delivery experience and ability to lead cross-functional teams. This is More ❯

IT Business Systems Analyst Location: Cullompton About Us: Welcome to Gregory Distribution Ltd, where technology and logistics come together to drive operational excellence. As part of our commitment to continuous improvement, we are undertaking a group-wide IT equipment upgrade. Join our dynamic Technology Team and be part of a project that will modernise and enhance our IT infrastructure … across the UK. Job Description: Join our dynamic Technology team as an IT Business Systems Analyst , where you'll play a pivotal role in shaping and supporting the systems that drive our visionary logistics solutions. This is more than just a technical role - it's an opportunity to make a real impact across our business, helping teams work … smarter and deliver exceptional service to our customers. Key Responsibilities: Championing Business-Critical Systems: Configure, maintain, and support essential line-of-business systems that power our operations and enable us to deliver cutting-edge logistics solutions. Driving Change and Innovation: Lead the planning, implementation, and testing of system updates, feature releases, and configuration changes - whether part of strategic More ❯