1 to 25 of 109 Permanent Legacy Applications Jobs in the UK excluding London

dynamic team of developers and contractors, playing a key role in designing scalable, modern software solutions and leading the transformation of legacy applications into cutting-edge, web-based platforms using APIs and industry-standard technologies. This is your chance to drive innovation, influence system architecture, and contribute … digital infrastructure. You will also colaborate with stakeholders to gather business requirements and translate them into robust technical solutions and modernize legacy applications into scalable, web-based platforms. Using modern technologies, you will champion best practices for software architecture, coding standards, and performance, as well as troubleshoot More ❯

dynamic team of developers and contractors, playing a key role in designing scalable, modern software solutions and leading the transformation of legacy applications into cutting-edge, web-based platforms using APIs and industry-standard technologies. This is your chance to drive innovation, influence system architecture, and contribute … digital infrastructure. You will also colaborate with stakeholders to gather business requirements and translate them into robust technical solutions and modernize legacy applications into scalable, web-based platforms. Using modern technologies, you will champion best practices for software architecture, coding standards, and performance, as well as troubleshoot 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 ❯

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 ❯

/Senior/Lead levels to join their team. About the Team The Product Tech team is responsible for delivering a suite of Systems & Applications that support our Product Lifecycle and serve a diverse user base including Designers, Buyers, Merchandisers, Suppliers, and internal systems such as our Website, POS … assist in transforming the current monolithic system into a micro-service architecture. You will work on various high-profile projects, ensuring our systems and applications support our current and future product portfolio. As Next expands and adopts new initiatives, your work will help evolve our systems to support these … working practices, involvement in driving change, and the opportunity to improve customer service. The role also involves tackling challenges related to legacy applications and older code languages. You will contribute your analysis and development skills to create and enhance systems and applications, participate in out-of 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. Preferred Qualifications: Certifications More ❯

Software Engineer | C#, SQL, Testing - Legacy Refactoring project @ a 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 … 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 ❯

Software Engineer | C#, SQL, Testing - Legacy Refactoring project @ a 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 … 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 ❯

London H/Q (option to work out Suffolk, South Wales or even Dublin too!) 5 days per week onsite. ICT Manager (of Enterprise Applications) is responsible for leading the strategic direction, oversight, and governance of enterprise applications. This includes managing key suppliers, ensuring application performance, stability, and lifecycle … term sustainability. The role also involves the integration of new products into the portfolio, following mergers and acquisitions, and driving consistency and adoption of applications across all entities. Maintain an application service catalogue and identify shadow IT risks Develop exit strategies for key applications to ensure robust contingency … planning Drive decommissioning of legacy applications to optimise the application landscape Raise and track risks associated with applications to support enterprise risk management Expand and formalise supplier and contract management, covering security & regulatory elements, compliance, service metrics, cost control and supplier effectiveness Foster a strategic, long More ❯

London H/Q (option to work out Suffolk, South Wales or even Dublin too!) 5 days per week onsite. ICT Manager (of Enterprise Applications) is responsible for leading the strategic direction, oversight, and governance of enterprise applications. This includes managing key suppliers, ensuring application performance, stability, and lifecycle … term sustainability. The role also involves the integration of new products into the portfolio, following mergers and acquisitions, and driving consistency and adoption of applications across all entities. Maintain an application service catalogue and identify shadow IT risks Develop exit strategies for key applications to ensure robust contingency … planning Drive decommissioning of legacy applications to optimise the application landscape Raise and track risks associated with applications to support enterprise risk management Expand and formalise supplier and contract management, covering security & regulatory elements, compliance, service metrics, cost control and supplier effectiveness Foster a strategic, long 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 ❯

across a multi-cloud, high-transaction environment where compliance, trust, and communication are critical. You’ll work across Azure, GCP, and OCI, with legacy AWS components being transitioned to Azure. What You’ll Be Doing: Assist … on cloud security architecture, primarily across Azure, with some GCP and OCI. Partner with IT and the business to assess and secure key cloud applications and infrastructure. Assist in migrating and securing legacy applications into a newly structured cloud tenancy. Ensure alignment with compliance frameworks like 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 ❯

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 ❯

Core. Database expertise – working knowledge of SQL Server/T-SQL. Source control systems – proficient with Git. Security best practices – familiarity with securing web applications, handling vulnerability findings, and implementing security patches. Performance optimization – ability to identify and resolve performance bottlenecks across the stack. Experience maintaining and modernizing legacy applications – with a pragmatic approach to balancing short-term needs and long-term improvements. If this sounds like the role for you, click ‘apply now’ and a member of our team will be in touch. More ❯

Core. Database expertise – working knowledge of SQL Server/T-SQL. Source control systems – proficient with Git. Security best practices – familiarity with securing web applications, handling vulnerability findings, and implementing security patches. Performance optimization – ability to identify and resolve performance bottlenecks across the stack. Experience maintaining and modernizing legacy applications – with a pragmatic approach to balancing short-term needs and long-term improvements. If this sounds like the role for you, click ‘apply now’ and a member of our team will be in touch. More ❯

per annum + Benefits Drive the Future of Enterprise Migration We are seeking a Migration Architect to lead the transformation of mission-critical applications, data, and infrastructure. This role is ideal for an experienced architect with a deep understanding of migration strategies and cloud technologies, ensuring seamless transitions with … minimal disruption to business operations. Key Responsibilities: Own and manage the migration of legacy applications from planning to execution. Design and implement comprehensive migration strategies across cloud and on-premises environments . Assess existing systems to determine migration requirements and develop technical roadmaps . Lead high-impact More ❯

per annum + Benefits Drive the Future of Enterprise Migration We are seeking a Migration Architect to lead the transformation of mission-critical applications, data, and infrastructure. This role is ideal for an experienced architect with a deep understanding of migration strategies and cloud technologies, ensuring seamless transitions with … minimal disruption to business operations. Key Responsibilities: Own and manage the migration of legacy applications from planning to execution. Design and implement comprehensive migration strategies across cloud and on-premises environments . Assess existing systems to determine migration requirements and develop technical roadmaps . Lead high-impact More ❯

looking for a Dynamics Developer to play a key role in the Felix IT Team to support our continued support and development of bespoke applications built on the Microsoft Dynamics technology stack. This role will report into the Senior System Administrator who is responsible for our Microsoft Dynamics environment. … Felix Project, we are embarking on a journey to apply technology and IT systems to streamline the business and become more efficient. Our core applications are all based on the Microsoft suite – Dynamics, M365, Power BI, Fabric, Real Time Marketing and SharePoint. We also use the Microsoft Security and … from time to time. Person Specification We are looking for a Dynamics Developer with experience helping to continue our migration of legacy applications and spreadsheets into D365. We have a limited external support contract from a near shore support centre in Bratislava and an offshore support development More ❯

fixes to the strategic reporting and surveillance platforms Creating functional requirements for migration of the reporting logic currently accommodated by other legacy applications onto the strategic reporting platform Engaging upstream system owners where changes are required for regulatory reporting purposes Performing some BAU support tasks related to … defining requirements Working with development teams to ensure requirements are understood Defining scope of testing, working with testers, validating test results Support the existing applications, assist in diagnosis and resolutions of issues Skills/experience required: Skills required: 5 years minimum experience of being a business analyst, ideally in More ❯

fixes to the strategic reporting and surveillance platforms Creating functional requirements for migration of the reporting logic currently accommodated by other legacy applications onto the strategic reporting platform Engaging upstream system owners where changes are required for regulatory reporting purposes Performing some BAU support tasks related to … defining requirements Working with development teams to ensure requirements are understood Defining scope of testing, working with testers, validating test results Support the existing applications, assist in diagnosis and resolutions of issues Skills/experience required: Skills required: 5 years minimum experience of being a business analyst, ideally in More ❯

processes space, not necessary Dynamics 365 knowledge Working knowledge of IT architecture, data model, business modelling Awareness of application rationalisation approaches for their legacy apps (light touch only at this stage) Other Essential Skills Ability to collect, evaluate and interpret information from multiple sources to identify and differentiate More ❯

processes space, not necessary Dynamics 365 knowledge Working knowledge of IT architecture, data model, business modelling Awareness of application rationalisation approaches for their legacy apps (light touch only at this stage) Other Essential Skills Ability to collect, evaluate and interpret information from multiple sources to identify and differentiate 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 ❯

end-to-end cloud architectures aligning with business and technology objectives. Develop strategies for cloud adoption, migration, and modernization, ensuring seamless transitioning from legacy systems. Design and implement multi-cloud, hybrid cloud, or cloud-native architectures for scalability and resilience. Provide architectural guidance on security, compliance, and governance … databases, preferably Azure CosmosDB, Neo4j Graph DB (or similar technology e.g., Amazon RDS, Azure SQL, BigQuery, NoSQL). Application Architecture & Security Architect microservices-based applications, ensuring modular, scalable, and API-first designs Design and implement application security controls, including IAM, Zero Trust models, encryption, and API security best practices. … welcome requests prior to you completing the application and at any stage of the recruitment process. Next Steps Due to a high volume of applications, we will be unable to contact each applicant individually on the status of their application. If you have not received a direct response within More ❯