23 of 23 Permanent Legacy Applications Jobs in London

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 ❯

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 ❯

Cloud's browser based u ser interface to expose events and API calls to the agent's desktop session so that legacy applications can be integrated to Genesys . CX Email Expert- an enhancement to Genesys' existing email capability that adds the ability to park and resume 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 ❯

RDS, Lambda, CloudFormation, and API Gateway, ensuring alignment with business objectives. Define cloud adoption strategies, roadmaps, and migration plans to transition legacy applications and infrastructure to the cloud with minimal disruption. Design cost-effective cloud architectures leveraging AWS services, optimizing performance, security, compliance, and resource utilization. Use … such as EC2, S3, VPC, Lambda, RDS, CloudFormation, and IAM. Proven expertise in building highly available, fault-tolerant, and scalable architectures, and migrating complex applications to AWS (e.g., replatforming, rearchitecting). In-depth knowledge of AWS security best practices (IAM, VPC security, encryption, data protection) and compliance with industry … Step Functions. Familiarity with multi-cloud environments and integration with other cloud providers (e.g., Azure, GCP) and on-premises systems. Expertise in managing containerized applications using Docker, ECS, EKS, or Kubernetes, and deep knowledge of networking (VPC, Direct Connect, VPN, Route 53). Experience with CI/CD pipelines 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 ❯

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 ❯

implementation with at least one of: Salesforce ClickSoftware Solutions Enterprise CRM, ERP and order management software such as, SAP, Oracle and legacy applications Strong desire to work both in design and in 'hands-on' implementation modes in the delivery of solutions. Excellent written and verbal communication skills More ❯

Strong security mindset, understanding of best practices for secure coding, authentication, and data protection. Experience in leading technical transformations and migrating legacy applications to modern architectures. Demonstrated ability to influence senior stakeholders and drive engineering roadmaps. Strong communication, decision-making, and conflict-resolution skills. Desired competencies Experience 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 ❯

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 ❯

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 ❯

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 ❯

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 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 ❯

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 ❯