126 to 150 of 481 Legacy Systems Jobs in the UK

days onsite) | Exclusive Role with a Leading UK Consumer Business A rapidly scaling UK consumer brand is undertaking a major data modernisation programme-moving away from legacy systems, manual Excel reporting and fragmented data sources into a fully automated Azure Enterprise Landing Zone + Databricks Lakehouse . They are building a modern data platform from the ground More ❯

days onsite) | Exclusive Role with a Leading UK Consumer Business A rapidly scaling UK consumer brand is undertaking a major data modernisation programme-moving away from legacy systems, manual Excel reporting and fragmented data sources into a fully automated Azure Enterprise Landing Zone + Databricks Lakehouse . They are building a modern data platform from the ground More ❯

Leading UK Consumer Business No sponsorship/relocation provided sadly Our incredibly successful client, consumer brand is undertaking a major data modernisation programme-moving away from legacy systems, manual Excel reporting and fragmented data sources into a fully automated Azure Enterprise Landing Zone + Databricks Lakehouse . They are building a modern data platform from the ground More ❯

and AI services. Develop resilient, scalable, and secure cloud platforms to support global operations and business continuity. Transformation Collaborate with architects and engineering teams to modernise legacy systems and enable cloud-native development. Lead the integration of Azure AI services (including Azure OpenAI, Cognitive Services, and Machine Learning) into key business applications. Global Operations & Service Delivery Oversee More ❯

embedded in some of the UK’s most ambitious financial services programmes. They work closely with business and technology leaders to drive strategic change, from platform modernisation and core systems reengineering, to cloud adoption and integration overhaul. Your Role You’ll be part of a highly credible, expert-led team shaping complex solutions across the full technology stack. Whether … modernising legacy systems, enabling cloud-first strategies, or improving end-to-end integration, you’ll bring structure, clarity, and delivery alignment to everything you do. What You’ll Be Doing as a Solution Architect: Lead the design and implementation of end-to-end solutions across application, integration, and infrastructure domains Shape and steer technology change across major … You’ll Bring as a Solution Architect: You’re a credible solution architect who thrives in fast-paced, high-compliance environments. You understand the realities of Financial Services, legacy complexity, data sensitivity, and the need to balance innovation with control. Key Experience: Deep experience in Financial Services (e.g. banking, insurance, wealth, or capital markets) Proven success delivering architecture More ❯

embedded in some of the UK’s most ambitious financial services programmes. They work closely with business and technology leaders to drive strategic change, from platform modernisation and core systems reengineering, to cloud adoption and integration overhaul. Your Role You’ll be part of a highly credible, expert-led team shaping complex solutions across the full technology stack. Whether … modernising legacy systems, enabling cloud-first strategies, or improving end-to-end integration, you’ll bring structure, clarity, and delivery alignment to everything you do. What You’ll Be Doing as a Solution Architect: Lead the design and implementation of end-to-end solutions across application, integration, and infrastructure domains Shape and steer technology change across major … You’ll Bring as a Solution Architect: You’re a credible solution architect who thrives in fast-paced, high-compliance environments. You understand the realities of Financial Services, legacy complexity, data sensitivity, and the need to balance innovation with control. Key Experience: Deep experience in Financial Services (e.g. banking, insurance, wealth, or capital markets) Proven success delivering architecture More ❯

we connect them with skilled interim and temporary professionals, fostering workplaces where everyone can contribute and succeed. On behalf of Tesco Bank, AMS are now looking for a Senior Systems Engineer based in Edinburgh (2-3 days on site) for an initial contract length of 6 Months. About the Role: Tesco Bank is seeking a highly skilled Senior Systems Engineer to join their Smarter Decisioning Platform team. You will play a key role within a specialist data engineering environment, ensuring reliable systems operations while contributing to the build, maintenance, and support of cloud and on-premise infrastructure. This role will be part of the Data Move Team within the Decisioning department and will be closely involved with … the File Transfer Gateway Platform , which supports all internal and external business file transfers. The team is currently focused on assessing existing infrastructure, decommissioning legacy systems, establishing new enterprise data transfer capabilities, and delivering secure, reliable AWS-based file transfer solutions. Key Responsibilities: Coordinate engineering activities and deliver high-quality technical solutions in partnership with the Product More ❯

we connect them with skilled interim and temporary professionals, fostering workplaces where everyone can contribute and succeed. On behalf of Tesco Bank, AMS are now looking for a Senior Systems Engineer based in Edinburgh (2-3 days on site) for an initial contract length of 6 Months. About the Role: Tesco Bank is seeking a highly skilled Senior Systems Engineer to join their Smarter Decisioning Platform team. You will play a key role within a specialist data engineering environment, ensuring reliable systems operations while contributing to the build, maintenance, and support of cloud and on-premise infrastructure. This role will be part of the Data Move Team within the Decisioning department and will be closely involved with … the File Transfer Gateway Platform , which supports all internal and external business file transfers. The team is currently focused on assessing existing infrastructure, decommissioning legacy systems, establishing new enterprise data transfer capabilities, and delivering secure, reliable AWS-based file transfer solutions. Key Responsibilities: Coordinate engineering activities and deliver high-quality technical solutions in partnership with the Product More ❯

a week in the office eligibility to work in the UK We are seeking a skilled Senior Developer to join a newly formed engineering team focused on removing legacy components and addressing technical debt within our Media Services products. This role will involve working closely with stakeholders to understand system requirements, designing robust replacement components, and implementing them … development (TDD) is essential, as is hands on experience in component migrations. A proactive and detail-oriented approach will be vital to ensure smooth transitions from legacy systems to scalable, reliable, and future-proof solutions. In addition, experience with software testing practices, Agile methodologies (Scrum or Kanban), and defensive programming techniques will be highly desirable. We are … looking for someone who thrives in collaborative, fast-paced teams, who can balance technical precision with delivery deadlines, and who is motivated by the challenge of modernising complex systems to drive efficiency and long-term sustainability. Essential Key Skills and Responsibilities You will have: Good working experience with continuous integration and continuous delivery (CI/CD) AWS CodePipeline expertise More ❯

in the office eligibility to work in the UK Role Overview We are seeking a skilled Senior Developer to join a newly formed engineering team focused on removing legacy components and addressing technical debt within our Media Services products. This role will involve working closely with stakeholders to understand system requirements, designing robust replacement components, and implementing them … development (TDD) is essential, as is hands on experience in component migrations. A proactive and detail-oriented approach will be vital to ensure smooth transitions from legacy systems to scalable, reliable, and future-proof solutions. In addition, experience with software testing practices, Agile methodologies (Scrum or Kanban), and defensive programming techniques will be highly desirable. We are … looking for someone who thrives in collaborative, fast-paced teams, who can balance technical precision with delivery deadlines, and who is motivated by the challenge of modernising complex systems to drive efficiency and long-term sustainability. Essential Key Skills and Responsibilities You will have: Good working experience with continuous integration and continuous delivery (CI/CD) AWS CodePipeline expertise More ❯

that underpin some of the UKs most complex technology programmes. The Role Youll be hands-on in designing, building, and optimising modern Kubernetes-based platforms that enable large-scale systems integration and automation. This will include containerising workloads, implementing robust CI/CD processes, and shaping secure environments within regulated, mission-focused settings. Working alongside architects, security engineers, and … developers, youll play a key part in modernising legacy systems, introducing automation, and helping clients realise the full potential of cloud technologies. Key Responsibilities Design and manage containerised environments using Kubernetes (EKS, AKS, or GKE) and associated tooling (Helm, ArgoCD, Istio) Build and optimise cloud infrastructure using Terraform, Ansible, or similar automation frameworks Develop CI/CD More ❯

some of the UK’s most complex technology programmes. The Role You’ll be hands-on in designing, building, and optimising modern Kubernetes-based platforms that enable large-scale systems integration and automation. This will include containerising workloads, implementing robust CI/CD processes, and shaping secure environments within regulated, mission-focused settings. Working alongside architects, security engineers, and … developers, you’ll play a key part in modernising legacy systems, introducing automation, and helping clients realise the full potential of cloud technologies. Key Responsibilities • Design and manage containerised environments using Kubernetes (EKS, AKS, or GKE) and associated tooling (Helm, ArgoCD, Istio) • Build and optimise cloud infrastructure using Terraform, Ansible, or similar automation frameworks • Develop CI/ More ❯

as part of a wider digital transformation programme. This role will focus on delivering high-level technical design, system assessment, and integration architecture , helping to ensure new and upgraded systems are well defined, secure, and aligned with enterprise standards. Working closely with project managers, business analysts, and technical teams, you'll help shape solutions that meet operational needs while … into technical designs. Evaluate integration, data, and security implications of proposed solutions. Provide expert technical guidance to managers and delivery teams. Support ongoing gap analysis between legacy systems and target architectures. Experience & Skills Proven experience as a Solution Architect , Technical Architect , or similar senior technical design role. Active NPPV3 clearance (or transferable) is essential. Strong understanding of … Microsoft environments , application architecture, and system integration. Ability to produce clear, well-structured architecture documentation and high-level designs. Experience working across multiple business applications or specialist systems (knowledge of Cellebrite, CoreVet, Clue, or Niche advantageous). Strong analytical and problem-solving skills, with the ability to simplify complex systems into actionable designs. Excellent stakeholder engagement and communication More ❯

the firm’s most strategically important investment areas. As part of this team, you’ll design and deliver production-grade Python applications that automate workflows, modernise legacy systems, and bridge the gap between current and next-generation infrastructure. You’ll work directly with stakeholders across investments, risk, finance, and operations, driving tangible business impact through technology. Responsibilities … Build and maintain Python-based tools supporting mortgage analytics, valuation, and reporting. • Develop production-grade applications and contribute to the migration of legacy models. • Identify automation opportunities across data pipelines, analytics, and reporting. • Collaborate with business teams to gather requirements and deliver scalable solutions. • Champion best practices in testing, documentation, and maintainability. Requirements • Strong proficiency in Python • Experience More ❯

the firm’s most strategically important investment areas. As part of this team, you’ll design and deliver production-grade Python applications that automate workflows, modernise legacy systems, and bridge the gap between current and next-generation infrastructure. You’ll work directly with stakeholders across investments, risk, finance, and operations, driving tangible business impact through technology. Responsibilities … Build and maintain Python-based tools supporting mortgage analytics, valuation, and reporting. • Develop production-grade applications and contribute to the migration of legacy models. • Identify automation opportunities across data pipelines, analytics, and reporting. • Collaborate with business teams to gather requirements and deliver scalable solutions. • Champion best practices in testing, documentation, and maintainability. Requirements • Strong proficiency in Python • Experience More ❯

client experience. You'll work on everything from trading platforms to client presentation tools, with full ownership from concept to production. This isn't about maintaining legacy systems – you'll be building greenfield applications that enable our growth strategy. What You'll Do · Design, build and deploy full-stack web applications using React, Python, and AWS · Own … teams to understand needs and deliver solutions · Build responsive, intuitive frontends that non-technical users love · Develop robust APIs and backend services integrated with our internal and 3rd party systems · Deploy containerized applications on AWS EKS with robust CI/CD pipelines · Balance "perfect" with "shipped" – knowing when good enough is exactly right · Contribute to technical decisions as we More ❯

lead critical data migration activities within this well-respected organisation. As the Data Migration Specialist, you will take ownership of designing and executing data migrations from legacy systems, developing standardised ETL packages using Azure Data Factory. You'll be responsible for ensuring data quality, accuracy, and integrity throughout the migration process, while establishing robust processes and documentation … overall integration strategies and business objectives. We are looking for: Extensive experience in ETL development using SQL, Azure Data Factory, Synapse Pipelines, and Stored Procedures Proven experience in legacy data migration and ERP implementations, including at least two full life cycle implementations in a Data Analyst role Strong SQL and SSIS experience It would be a bonus if More ❯

lead critical data migration activities within this well-respected organisation. As the Data Migration Specialist, you will take ownership of designing and executing data migrations from legacy systems, developing standardised ETL packages using Azure Data Factory. You'll be responsible for ensuring data quality, accuracy, and integrity throughout the migration process, while establishing robust processes and documentation … overall integration strategies and business objectives. We are looking for: Extensive experience in ETL development using SQL, Azure Data Factory, Synapse Pipelines, and Stored Procedures Proven experience in legacy data migration and ERP implementations, including at least two full life cycle implementations in a Data Analyst role Strong SQL and SSIS experience It would be a bonus if More ❯

a Senior Software Engineer to lead the technical rebuild of its flagship product. This is a hands-on role for an experienced engineer who loves modernising legacy systems and is excited about using AI tools to accelerate design, refactoring, and delivery . You’ll be the technical driver behind a full product transformation, rebuilding a complex ERP … per annum (flexible for exceptional candidates) Location: Hybrid – London office once per fortnight, remote within the UK What you’ll be doing: Lead the refactor of a large legacy system into a modern, scalable cloud-native product Design and implement new architecture using AWS microservices, PostgreSQL, Node.js, React, and TypeScript Use AI-assisted tools such as OpenAI, LangChain More ❯

the end-to-end migration of our on-premises IT infrastructure to Microsoft Azure . This is a critical role that requires extensive hands-on experience in migrating legacy services and applications. The ideal candidate will be based in or willing to relocate to Reading and have a proven track record of successfully managing complex cloud transformation projects. … cloud services with our existing document management platforms such as Google Drive and AO Docs . SAP Workload Migration (Desirable): Advise on and architect the migration of our legacy SAP environments, including SAP ECC and SAP M3 , to the Azure cloud platform. The ideal candidate will have hands-on experience with SAP on Azure best practices, and knowledge … of traditional on-premises infrastructure services including Domain Controllers , Certificate Services , DNS, DHCP, and file servers. Desirable: Prior experience with SAP on Azure migrations, particularly for legacy systems like SAP ECC or SAP M3. Excellent analytical and problem-solving skills, with the ability to design solutions for complex technical challenges. Microsoft Certified: Azure Solutions Architect Expert is More ❯

drive transformation at scale? Join a high-performing engineering team building cloud-native platforms used by millions. This is your opportunity to shape infrastructure strategy, modernise legacy systems, and deliver resilient, high-performance solutions using cutting-edge Azure and .NET technologies. 🌟 Your Mission As a Senior Infrastructure Engineer, you'll: Design and manage Azure infrastructure using Infrastructure … AppDynamics) Deep understanding of profiling, benchmarking, and optimisation Bonus Skills: Infrastructure as Code (ARM, Bicep, Terraform) Cloud networking (VNets, firewalls, load balancers) SQL Server performance tuning Experience modernising legacy apps in Azure 💼 Why You'll Love Working Here Remote-First Culture - Work from anywhere in the UK Flexible Hours - Fit work around your life Career Growth - Training budget More ❯

drive transformation at scale? Join a high-performing engineering team building cloud-native platforms used by millions. This is your opportunity to shape infrastructure strategy, modernise legacy systems, and deliver resilient, high-performance solutions using cutting-edge Azure and .NET technologies. Your Mission As a Senior Infrastructure Engineer, you'll: Design and manage Azure infrastructure using Infrastructure … AppDynamics) Deep understanding of profiling, benchmarking, and optimisation Bonus Skills: Infrastructure as Code (ARM, Bicep, Terraform) Cloud networking (VNets, firewalls, load balancers) SQL Server performance tuning Experience modernising legacy apps in Azure Why You'll Love Working Here Remote-First Culture - Work from anywhere in the UK Flexible Hours - Fit work around your life Career Growth - Training budget More ❯

Join a growing team as a QA Automation Engineer working on innovative projects at the forefront of digital transformation. The Digital Transformation Centre specialises in modernising legacy systems into cloud-native solutions using Java and open-source technologies. They embrace agile and DevOps principles to deliver high-quality applications and platforms. The tech stack includes Java, microservices … JIRA, Confluence, or other backlog/test management platforms. Exposure to iterative or incremental software delivery practices. Ability to maintain and execute automated testing cycles. Familiarity with version control systems such as Git. Understanding of Agile methodologies and ways of working. Please note that you MUST be eligible for SC clearance and be able and willing to be onsite More ❯

and collaboration, as well as continuous learning and application of new technologies and trends. With progression in this track, the responsibilities expand to include leading teams, designing complex software systems, providing mentorship, and managing cross-functional integration. Responsibilities: Design, build, deploy, and maintain quality code that is simple, well-structured, clear, and well-tested. Effectively break down and solve … Analytics (NYSE: CWAN) is transforming investment management with the industry’s most comprehensive cloud-native platform for institutional investors across global public and private markets. While legacy systems create risk, inefficiency, and data fragmentation, Clearwater’s single-instance, multi-tenant architecture delivers real-time data and AI-driven insights throughout the investment lifecycle. The platform eliminates information More ❯

and collaboration, as well as continuous learning and application of new technologies and trends. With progression in this track, the responsibilities expand to include leading teams, designing complex software systems, providing mentorship, and managing cross-functional integration. Responsibilities: Design, build, deploy, and maintain quality code that is simple, well-structured, clear, and well-tested. Effectively break down and solve … Analytics (NYSE: CWAN) is transforming investment management with the industry’s most comprehensive cloud-native platform for institutional investors across global public and private markets. While legacy systems create risk, inefficiency, and data fragmentation, Clearwater’s single-instance, multi-tenant architecture delivers real-time data and AI-driven insights throughout the investment lifecycle. The platform eliminates information More ❯