15 of 15 Legacy Applications Jobs in the Thames Valley

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 ❯

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 ❯

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 ❯

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 ❯

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 ❯

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 ❯

London, UK . This is a full-time, permanent role ideal for professionals who are passionate about building scalable backend systems and modernizing legacy architectures. You will play a key role in migrating .NET-based systems to Python , while collaborating closely with cross-functional teams to deliver high … contribute to long-term strategic system improvements. Key Responsibilities: Develop, enhance, and maintain backend services using Python . Participate in the modernization of legacy .NET systems , including understanding and re-architecting existing logic in Python. Design and optimize SQL queries and manage relational database integrations . Collaborate with … SQL and working with relational databases (e.g., PostgreSQL, MySQL, SQL Server). Background in C# , Java , or C++ – essential for understanding and translating legacy code during migration. Experience with software development best practices including version control, testing, and CI/CD. Good problem-solving skills and the ability More ❯

eager to grow their experience in modern web development and legacy system support You'll be involved in both maintaining existing WinForms applications and contributing to new development using Blazor. You'll also work with SQL Server and have the opportunity to build custom interface layers for … with C# (core language focus) Exposure to Blazor or other modern web UI frameworks (e.g., Razor Pages, React, Angular) Familiarity with WinForms for legacy application support Ability to read and understand VB.Net Competence in SQL Server: writing queries, stored procedures, and understanding relational databases Experience with Entity Framework More ❯

eager to grow their experience in modern web development and legacy system support You'll be involved in both maintaining existing WinForms applications and contributing to new development using Blazor. You'll also work with SQL Server and have the opportunity to build custom interface layers for … with C# (core language focus) Exposure to Blazor or other modern web UI frameworks (e.g., Razor Pages, React, Angular) Familiarity with WinForms for legacy application support Ability to read and understand VB.Net Competence in SQL Server: writing queries, stored procedures, and understanding relational databases Experience with Entity Framework More ❯

eager to grow their experience in modern web development and legacy system support You'll be involved in both maintaining existing WinForms applications and contributing to new development using Blazor. You'll also work with SQL Server and have the opportunity to build custom interface layers for … with C# (core language focus) Exposure to Blazor or other modern web UI frameworks (e.g., Razor Pages, React, Angular) Familiarity with WinForms for legacy application support Ability to read and understand VB.Net Competence in SQL Server: writing queries, stored procedures, and understanding relational databases Experience with Entity Framework More ❯

eager to grow their experience in modern web development and legacy system support You'll be involved in both maintaining existing WinForms applications and contributing to new development using Blazor. You'll also work with SQL Server and have the opportunity to build custom interface layers for … with C# (core language focus) Exposure to Blazor or other modern web UI frameworks (e.g., Razor Pages, React, Angular) Familiarity with WinForms for legacy application support Ability to read and understand VB.Net Competence in SQL Server: writing queries, stored procedures, and understanding relational databases Experience with Entity Framework More ❯

eager to grow their experience in modern web development and legacy system support You'll be involved in both maintaining existing WinForms applications and contributing to new development using Blazor. You'll also work with SQL Server and have the opportunity to build custom interface layers for … with C# (core language focus) Exposure to Blazor or other modern web UI frameworks (e.g., Razor Pages, React, Angular) Familiarity with WinForms for legacy application support Ability to read and understand VB.Net Competence in SQL Server: writing queries, stored procedures, and understanding relational databases Experience with Entity Framework More ❯

A brilliant opportunity for an Android Developer to join a highly product-focused team building one of the most visible and widely used mobile applications in the UK. This isn't a place where you're tweaking legacy apps or stuck doing maintenance. You'll be at … code, work with great people, and see your work ship fast - this could be the one. We are an equal opportunities employer and welcome applications from all suitably qualified persons regardless of their race, sex, disability, religion/belief, sexual orientation, or age. More ❯

a new leadership team, and a sharp focus on modernisation and cloud innovation. Why this is different: This isn’t about ripping up legacy code and starting over. It’s about carefully modernising a well loved product used by 350+ customers across Europe and the UK. The business … Delphi expert to help lead that journey. What makes it interesting: You’ll be the hands on Delphi champion, with support from a legacy savvy internal team and the freedom to guide modernisation best practices. The role is product-led, customer focused, role and you'll have the … evolution. You’ll thrive here if you: -Live and breathe Delphi (newer versions/frameworks especially) -Have experience in cloud environments or transitioning legacy apps - Bonus: Java or C# knowledge for cross-functional input More info : -HQ in Guildford (1 day per fortnight minimum, ideally 2 per week More ❯