1 to 25 of 30 Legacy Applications Jobs in the UK excluding London

contribute to architectural decisions, and help us continuously improve our development practices. Our tech environment: .NET ecosystem (.NET 6+, C#, legacy ASP.NET applications) Cloud-first approach with Azure (App Services, Functions, Azure SQL) CI/CD pipelines using GitHub Actions Mix of microservices and legacy applications in transition Agile development using Scrum What you'll be doing: ✅ Designing and developing robust, scalable software solutions for our internal platforms ✅ Modernising legacy applications and shifting them into the cloud native era ✅ Collaborating with business stakeholders to understand requirements and deliver value More ❯

be citizen of the country and needs to work from customer site. (All 5 days every week). Perform discovery and analysis of homegrown applications to document functionality and integrations Create architecture diagrams to map application components and dependencies Identify and document integration points with other systems and services … Modify applications as needed to support migration efforts Collaborate with stakeholders and technical teams to ensure seamless transitions Lead in the design, development, deployment and maintenance of local applications Rewrite Legacy applications written in obsolete software development application platforms such as Visual Basic 6.0 and … Access/Excel VBA vital to the success of the Rutland site. Rewrite, improve and streamline current .NET and other applications to ensure continuity of manufacturing and business operations. Work closely with shop floor manufacturing associates and site leadership to develop solutions to ensure success. Maintain current applications More ❯

McCade is partnering with a leading European consultancy is seeking a Migration Architect to lead and manage the migration of critical legacy applications, data, and infrastructure to new environments. This role requires extensive experience in planning, designing, and executing migration strategies while ensuring minimal disruption to business … operations. Key Responsibilities: Oversee the end-to-end migration of critical legacy applications through cutover and hyper care. Develop and implement comprehensive migration strategies and plans. Assess existing systems and infrastructure to determine migration requirements. Design and deploy migration architectures, covering both cloud and on-premises environments. More ❯

Software Developer to join them onsite at this exciting stage. This is your opportunity to play a key role in migrating legacy applications to a modern C#/.NET platform, with the added bonus of working with Blazor to create dynamic and responsive user interfaces. What you … ll be doing: Developing and supporting internal software solutions using C# , .NET , and Blazor Migrating existing legacy applications to the latest .NET technologies Working with SQL Server to maintain and enhance data-driven applications Collaborating with cross-functional teams to deliver efficient and scalable solutions Participating … skills in SQL and working with relational databases Experience with Blazor (or a keen interest and exposure to it) Previous involvement in migrating legacy software is highly beneficial A proactive, team-oriented mindset with strong problem-solving skills Why join? Be a central part of a large-scale More ❯

Owners, developers, and external stakeholders to define and work towards achievable goals. Here's What You Can Expect To Be Doing Building .NET Core applications Migrating legacy applications to .NET Core (Ruby and/or VB experience would be an advantage but not required) Working towards More ❯

cutting-edge tech, supporting ongoing projects, and contributing to future improvements. What Youll Be Working On: C#/.NET Development Maintaining and improving our applications, with a mix of legacy .NET Framework 4 and newer .NET 8 solutions. ASP.NET & Web Development Handling backend and frontend work using … Mobile Development Working with Xamarin (primarily Android) and assisting with a migration plan to MAUI, including iOS development. Angular/TypeScript Developing and maintaining applications using Angular 18/19, while also supporting legacy migrations. Azure Services Managing Azure SQL, Azure DevOps (TFS), Azure Web Apps, Functions … additional expertise, so if you have a keen eye for design and usability, wed love to hear from you! Experience modernizing legacy applications An interest in improving development workflows and deployment strategies Why Join Us? Work with a variety of technologies in a fast-paced environment. Be More ❯

edge tech, supporting ongoing projects, and contributing to future improvements. What You'll Be Working On: C#/.NET Development - Maintaining and improving our applications, with a mix of legacy .NET Framework 4 and newer .NET 8 solutions. ASP.NET & Web Development - Handling backend and frontend work using … Mobile Development - Working with Xamarin (primarily Android) and assisting with a migration plan to MAUI, including iOS development. Angular/TypeScript - Developing and maintaining applications using Angular 18/19, while also supporting legacy migrations. Azure Services - Managing Azure SQL, Azure DevOps (TFS), Azure Web Apps, Functions … expertise, so if you have a keen eye for design and usability, we'd love to hear from you! Experience modernizing legacy applications An interest in improving development workflows and deployment strategies Why Join Us? Work with a variety of technologies in a fast-paced environment. Be More ❯

JSON based Messaging. Experience on recent BizTalk versions including 2013. Strong knowledge of integration patterns, especially in integrating Portals/SSO, legacy applications, B2B Applications, external partners using BizTalk. Strong command on various BizTalk components like BRE and BAM and should have expertise in developing custom More ❯

optimization. Ensure minimal disruption to business operations during migration activities. Cloud Database Administration: Manage, monitor, and maintain databases within the cloud environment. Update legacy versions of SQL databases, ensuring compatibility with modern technologies and standards. Administer and manage Windows-based SQL environments across development, test, UAT, and production … editions. Create and implement comprehensive plans to update and migrate legacy databases. Collaborate with teams to resolve challenges involving legacy applications and their database dependencies. Infrastructure-as-Code (IaC): Design and deploy IaC solutions to automate database provisioning, scaling, and management. Collaborate with DevOps teams … Hands-on experience with Infrastructure-as-Code tools (Terraform, Azure DevOps, GitHub Actions). Proficiency in database migration techniques and tools, including updating legacy SQL versions. Solid understanding of CI/CD pipelines, automation, and DevOps practices. Excellent problem-solving, communication, and team collaboration skills. Desirable Qualifications: Certifications More ❯

Bridge and AWS, we want to hear from you. As a Senior Solution Architect, you'll work with customers to modernise legacy applications and databases as they migrate to AWS. You will be a technical authority in designing and delivering cloud-native architectures, serverless solutions, application and … consulting, and practice development, helping us define and scale modernisation offerings. Key Responsibilities Customer Engagement & Solution Design Engage with customers to understand their legacy application and database environments. Define modernisation strategies, focusing on database migration, re-platforming, and serverless adoption. Design AWS architectures that are scalable, secure, and … and caching strategies. Cloud-Native & Serverless Adoption Architect solutions leveraging AWS Lambda, API Gateway, Step Functions, and EventBridge. Support customers in breaking down monolithic applications into microservices. Define event-driven and asynchronous processing patterns to improve scalability. Infrastructure as Code & DevOps Automate database deployments using Terraform, AWS CloudFormation, and More ❯

Bridge and AWS, we want to hear from you. As a Senior Solution Architect, you'll work with customers to modernise legacy applications and databases as they migrate to AWS. You will be a technical authority in designing and delivering cloud-native architectures, serverless solutions, application and … consulting, and practice development, helping us define and scale modernisation offerings. Key Responsibilities Customer Engagement & Solution Design Engage with customers to understand their legacy application and database environments. Define modernisation strategies, focusing on database migration, re-platforming, and serverless adoption. Design AWS architectures that are scalable, secure, and … and caching strategies. Cloud-Native & Serverless Adoption Architect solutions leveraging AWS Lambda, API Gateway, Step Functions, and EventBridge. Support customers in breaking down monolithic applications into microservices. Define event-driven and asynchronous processing patterns to improve scalability. Infrastructure as Code & DevOps Automate database deployments using Terraform, AWS CloudFormation, and More ❯

Software Engineer | C#, SQL, Legacy Refactoring | Systematic Hedge Fund Rate: £650-750 per day IR35: Outside Duration: 12 months+ Location: 3 days in the office per week in Moorgate/Liverpool Street We’re working with a high-performing, systematic hedge fund based in the City to help … hands-on software engineer Strong C#/.NET and SQL background, ideally in data-centric or financial systems Solid experience refactoring legacy applications without full test coverage Testing; You must be a meticulous Tester in TDD. Excellent at writing characterisation tests to lock down behaviour before improving … pride in annotated, clean commits and structured workflows Having a ‘DevOps mindset’ and getting the importance of culture If you enjoy carefully improving legacy code , owning your application, and collaborating closely with a brilliant (and refreshingly small) trading and quant team, this one’s for you. Apply ASAP More ❯

new and long-standing customers. We are looking for hands-on, Cloud-/Azure-native Senior Solution Architects to help us modernise from legacy platforms to a future-ready architecture. Why Join Us? You enjoy driving results from transforming monolithic, mainframe-based platforms into cloud-native, event-driven … . Ability to create patterns that engineers can deploy as code using Terraform, Bicep, ARM templates. Hands-on experience in modernising legacy applications, cloud migration strategies, and hybrid architectures. Passionate about engineering excellence, governance, and delivering long-term business value. Skills Assist Principal Architect on TCO of More ❯

interacting with end-users, and working in a dynamic, data-driven environment. Key Responsibilities: Provide day-to-day support for Microsoft Access databases and applications, including front-end and back-end components. Maintain and enhance VBA code , queries, and forms to support evolving business needs. Troubleshoot and resolve application … preferred), including writing complex queries, joins, views, and stored procedures. Familiarity with relational database design and normalization. Experience troubleshooting and supporting legacy applications . Ability to translate business requirements into technical solutions. Preferred Qualifications: Experience with Excel VBA or integration between Access and Excel. Familiarity with Microsoft More ❯

interacting with end-users, and working in a dynamic, data-driven environment. Key Responsibilities: Provide day-to-day support for Microsoft Access databases and applications, including front-end and back-end components. Maintain and enhance VBA code , queries, and forms to support evolving business needs. Troubleshoot and resolve application … preferred), including writing complex queries, joins, views, and stored procedures. Familiarity with relational database design and normalization. Experience troubleshooting and supporting legacy applications . Ability to translate business requirements into technical solutions. Preferred Qualifications: Experience with Excel VBA or integration between Access and Excel. Familiarity with Microsoft More ❯

side logic of web and mobile applications. You will collaborate with front-end developers to integrate user-facing elements, optimize performance, and enhance legacy systems. This role involves troubleshooting, debugging, and implementing solutions that ensure security, efficiency, and alignment with business needs, ultimately driving innovation and improving … user experience. Key Responsibilities: Participate in the entire application lifecycle, focusing on coding and debugging Write clean code to develop functional web and mobile applications Troubleshoot and debug applications Participate in UI tests to optimize performance Manage cutting-edge technologies to improve legacy applications Collaborate More ❯

as well as collaborating as part of a team. Strong version control knowledge – Eg. Git. Nice-to-Have Skills: Experience migrating legacy applications and refactoring outdated codebases. Proficiency in procedural SQL (e.g., PL/SQL, T-SQL, MySQL stored procedures). Exposure to ACCELL/SQL (4GL More ❯

a dynamic Software Developer for a forward-thinking and expanding company. With an initial large-scale project of migrating the company's current legacy application to an updated cloud-based system, to gain advantages in platform advances, extend existing functionality and enhance user experience. Responsibilities: Ensure the continuous More ❯

and mitigate technical debt , ensuring a balance between quick wins and long-term stability . Oversee the refactoring and modernization of legacy applications , ensuring observability, performance, and security . Collaborate with Chief Engineers and engineering teams to define best practices for ETL, data integration, and cloud adoption More ❯

team based in Edinburgh for an initial 12-month period. Essential Skills: Work closely with other members of CDi to support a number of applications across the organisation. These applications cover both modern cloud-based applications and some more legacy on-prem applications. Consult and … UX, and test teams, to deliver high-quality solutions. Contribute to software development projects, providing architectural input when required. Provide BAU support for main applications including minor enhancements to ensure that the applications meet current legislation. Maintain development environments for the applications using Azure DevOps. Maintain documentation … redevelopment of a number of legacy applications. Conduct and participate in code reviews ensuring adherence to defined coding standards. Transition any additional applications from a third-party vendor to the organisation's support and development as required. Advise on knowledge transfer strategies with third-party vendors to More ❯

development of new software solutions within a rapidly expanding company. Work within their software engineering squads to develop new and modernize legacy applications using microservices. You'll primarily focus on Java backend, with a practical understanding of frontend development. As such you will need: Expertise in core … Strong React Any NoSQL DB exposure would be beneficial Microservices architecture TDD Agile Scrum If you are interested in working on modern, exciting new applications and enjoy contributing to a team who pride themselves on code quality and adopting best practices please get in touch ASAP More ❯

e2e Business Transformations, not just technical solutions to point business challenges. Help design and deliver ground-breaking cloud solutions - from migrating legacy applications onto Cloud, to building innovative, new cloud-native applications. Provide solutions to real world problems facing the UK government, working at the forefront of More ❯

Q1 2026 About the Role: We are seeking an experienced SCM Oracle Fusion Project Manager to lead the migration of two warehouses from legacy systems to Oracle Fusion SCM. This critical role will involve overseeing the entire migration process, ensuring a smooth transition, and optimising supply chain processes. … with occasional travel to Europe and Leicestershire for key project milestones. Key Responsibilities: Lead the migration of two warehouses from legacy applications to Oracle Fusion SCM. Work with key stakeholders to define project scope, objectives, and deliverables for the warehouse migrations. Develop and manage detailed project plans … as required for project milestones and key stakeholder meetings. Key Requirements: Essential: Significant experience with Oracle Fusion SCM implementations, particularly in migrating from legacy systems. Proven experience in managing the migration of warehouses or similar supply chain operations to Oracle Fusion SCM. In-depth understanding of Supply Chain More ❯

development of new software solutions within a rapidly expanding company. Work within their software engineering squads to develop new and modernize legacy applications using microservices. You'll primarily focus on Java backend, with a practical understanding of frontend development. As such you will need: Expertise in core … Strong React Any NoSQL DB exposure would be beneficial Microservices architecture TDD Agile – Scrum If you are interested in working on modern, exciting new applications and enjoy contributing to a team who pride themselves on code quality and adopting best practices please get in touch ASAP More ❯

its payments platform, and this role is a key part of that journey. The Payment Evolution Project is focused on containerising and modernising existing applications for Azure deployment. This is a technical migration, not a major functionality rewrite-our goal is to transition to a more scalable, cloud-native … architecture while maintaining stability. As a Senior Developer, you'll be working with .NET, Azure, and Kafka, ensuring that applications are optimised for cloud deployment and aligned with modern development practices. You'll assess the right .NET versioning strategy, manage dependency transitions (e.g., moving from MSMQ to Kafka), and … ll also be working on new features rollout in the existing system or new projects. What You'll Be Doing: Modernising and containerising existing applications for Azure deployment. Evaluating and implementing the right .NET framework version for each application. Adjusting and updating code to support dependency transitions and framework More ❯