151 to 175 of 573 Legacy Systems Jobs in the UK

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 ❯

Opportunity This is not just another architecture role. This is a chance to make a tangible impact in a truly enterprise-scale environment , working with high-traffic applications, distributed systems, and cloud-first engineering teams . You will: Define and lead the AWS cloud strategy for large-scale SaaS platforms. Architect and implement cloud-native, event-driven, microservices-based … solutions . Drive modernisation initiatives , replacing legacy systems with state-of-the-art cloud solutions. Work closely with engineering teams, guiding them on best practices in .NET, AWS, and cloud security . Influence technical decision-making at the highest levels while remaining hands-on in proof-of-concept work. Collaborate with product, business, and technology leaders to … of CI/CD pipelines, DevOps, and Infrastructure as Code (Terraform, CloudFormation) . ? A collaborative, pragmatic approach , comfortable influencing both engineers and senior stakeholders. ? Experience in large-scale distributed systems and enterprise environments. Why Join? Exceptional package Up to £100K base + 15-30% bonus + up to £10K car allowance. True hybrid working Manchester or Leeds office (just More ❯

office, flexible working hours The client are looking for an experienced .Net Developer to join the team and hit the ground running on the migration of legacy systems into the web, this is just 1 of a range of greenfield projects you will have to work on, their client base spans across multi-nationals and smaller UK … the .Net tech stack Solid experience with ASP.NET Core Must be comfortable working with REST API's Experience working with SQL/SQL Server Experience working with version control systems e.g Git Desirables Experience with JavaScript frameworks e.g ReactJS and AngularJS Experience with Winforms Working knowledge of NodeJS Azure DevOps What they're offering Salary More ❯

Government security classifications (SC Clearance or eligibility to obtain clearance required). Desirable Skills Experience working in Defence, Aerospace, or Government sectors. Familiarity with enterprise network integration and Legacy system interfacing. Knowledge of MOD standards such as JSP 440, JSP 604, and Secure by Design principles. Exposure to Microsoft Purview, Defender for Cloud, or other advanced security services. More ❯

data platforms, web services, and custom APIs. This is a hands-on technical role ideal for someone who thrives in complex environments and enjoys solving integration puzzles across legacy and modern systems. What You'll Be Doing: • Design, build, and maintain system integrations using .NET, SQL Server, and low-code platforms • Develop and optimise SQL queries, stored procedures More ❯

data platforms, web services, and custom APIs. This is a hands-on technical role ideal for someone who thrives in complex environments and enjoys solving integration puzzles across legacy and modern systems. What You'll Be Doing: Design, build, and maintain system integrations using .NET, SQL Server, and low-code platforms Develop and optimise SQL queries, stored procedures More ❯

data platforms, web services, and custom APIs. This is a hands-on technical role ideal for someone who thrives in complex environments and enjoys solving integration puzzles across legacy and modern systems. What You'll Be Doing: • Design, build, and maintain system integrations using .NET, SQL Server, and low-code platforms • Develop and optimise SQL queries, stored procedures More ❯

healthier lives, and to make a better world. As the Principal Architect for Health Insurance, you will play a pivotal role in shaping our technology landscape, ensuring that our systems and processes are aligned with our strategic goals. This role is crucial in driving innovation and enhancing our services to provide exceptional experiences for our customers. Key Responsibilities Develop … industry, ideally insurance. Experience in senior architectural leadership roles in a large global organization servicing multiple internal business lines. Expertise in modernizing large, complex legacy core product systems and platforms. Strong problem-solving, strategic, and creative thinking skills. Excellent communication and collaboration abilities. Experience with modern architectures, complex distributed systems, and microservices architecture. Hands-on experience More ❯

in a high-impact transformation initiative that will define their future. What's in it for you? Want to work on 100% greenfield projects with no legacy systems? You've got it. Interested in collaborating with a team that values modern coding practices, standards, and innovation ? This is the place. Looking for clear opportunities to lead projects More ❯

stakeholder relationships to ensure seamless cross-functional programme delivery. Your expertise in enterprise software development, integration architectures, and application lifecycle management will be instrumental in modernising legacy systems, embedding CI/CD, test automation, and DevSecOps practices while leveraging both traditional and cloud-based technologies such as .NET, SQL, and AWS. Beyond driving Agile and DevOps transformation More ❯

Core (ASP.NET) Entity Framework MS SQL – performance tuning and stored procedures Desirable: Blazor (or a strong interest in learning it) JavaScript/TypeScript React (used in legacy systems) Azure or other cloud experience What’s in It for You: Up to £36,600 salary Hybrid working: 2 days per week in the Peterlee office (SR8) Opportunities to More ❯

d love to meet you. Responsibilities Customer Delivery and Configuration Configure, and deliver solutions using the Sprout.ai platform Liaise with Engineering to deliver integrations between Sprout and our customers' systems Liaise with Data Science to implement & optimise AI document-processing models, AI workflows, and automation processes related to claim management Troubleshoot and resolve technical issues related to Sprout implementations … on their claim, often in times of vulnerability. The barriers to rapid claims settlement were clear; understanding of unstructured data, complexity and volume of decision making, legacy systems and processes. Sprout.ai's patented claims automation platform solves these challenges, and has already delivered instant claims settlement on millions of insurance claims around the world. Our proprietary AI More ❯

governance, compliance, and London Market regulatory standards. Document data definitions, relationships, and lineage using industry-standard modeling tools. Support data quality initiatives by identifying gaps and inconsistencies in source systems and downstream usage. Qualifications: London Market insurance experience is essential, including familiarity with market data structures and regulatory reporting. Strong experience in data modeling (conceptual, logical, physical) using tools … communication and documentation skills, with the ability to explain complex data concepts to non-technical stakeholders. Preferred Skills: Experience with insurance platforms such as Guidewire, Duck Creek, or legacy PAS systems. Knowledge of Delta Lake, Apache Spark, and data pipeline orchestration tools. Exposure to Agile delivery methodologies and tools like JIRA, Confluence, or Azure DevOps. Understanding of regulatory More ❯

stakeholder relationships to ensure seamless cross-functional programme delivery. Your expertise in enterprise software development, integration architectures, and application lifecycle management will be instrumental in modernising legacy systems, embedding CI/CD, test automation, and DevSecOps practices while leveraging both traditional and cloud-based technologies such as .NET, SQL, and AWS. Beyond driving Agile and DevOps transformation More ❯

reliability of SAP solutions. In a Cutover role, you would plan, manage, and execute the cutover activities for SAP implementations to ensure a smooth transition from legacy systems to SAP solutions. As PMO, you will be responsible for definition of project management and governance processes for the SAP implementation. While supporting the project management team on executing More ❯

reliability of SAP solutions. In a Cutover role, you would plan, manage, and execute the cutover activities for SAP implementations to ensure a smooth transition from legacy systems to SAP solutions. As PMO, you will be responsible for definition of project management and governance processes for the SAP implementation. While supporting the project management team on executing More ❯

driven solutions Our core language for this role is Java (Spring/MVC), so experience with this is necessary You have experience integrating with greenfield and legacy systems You have experience working with NoSQL & relational databases You believe that testing and software quality is everyone's responsibility, have experience with both unit and integration/contract/ More ❯

Java (Spring/MVC), so experience is essential You have experience with building APIs, microservice, and event-driven solutions You have experience integrating with greenfield and legacy systems You have experience working with NoSQL & relational databases You believe that testing and software quality is everyone's responsibility, have experience with both unit and integration/contract/ More ❯

Java (Spring/MVC), so experience is essential You have experience with building APIs, microservice, and event-driven solutions You have experience integrating with greenfield and legacy systems You have experience working with NoSQL & relational databases You believe that testing and software quality is everyone's responsibility, have experience with both unit and integration/contract/ More ❯

on their claim, often in times of vulnerability. The barriers to rapid claims settlement were clear; understanding of unstructured data, complexity and volume of decision making, legacy systems and processes. Sprout.ai's patented claims automation platform solves these challenges, and has already delivered instant claims settlement on millions of insurance claims around the world. Our proprietary AI More ❯

Our client, a fast-growing technology organisation with global operations, is seeking a proactive Infrastructure & Systems Engineer to join their high-performing technical operations function. This person will take ownership of both on-premise and cloud-based infrastructure, playing a key role in modernising legacy systems while maintaining the performance and resilience of existing services. The … to someone with strong technical problem-solving capabilities and the ability to balance hands-on engineering with strategic thinking. Key Responsibilities Lead the development and support of enterprise-wide systems infrastructure, including servers, storage, networks, and virtualisation layers. Build and maintain secure, high-availability environments across cloud and physical platforms, ensuring performance, capacity, and security align with business demands. … and resolve complex infrastructure issues. Implement and monitor backup strategies, patching, performance tuning, and system upgrades. Document processes, changes, and designs thoroughly to ensure repeatability and compliance. Monitor infrastructure systems to detect anomalies, enforce uptime standards, and support audit readiness. What We're Looking For Degree in Computer Science, Engineering, or related field (or equivalent hands-on experience). More ❯

with excellent Data Analyst skills - at least 3 to 5 years experience as a Data Analyst. Provide support to the data migration Lead in the data migration of legacy data into NetSuite edERP in accordance with the project plan Review the legacy data to identify data quality issues Review non-legacy data for data … quality & resolve issues Liaison with the schools throughout the data preparation stages Perform data extractions from the legacy system into Excel Review the legacy data to identify data quality issues such as; o missing mandatory fields o data not coherent & correctly cross-referenced o data not valid i.e. formatted correctly, consistent with NetSuite requirements o potential … engage in safeguarding training when required. Must have at least 3 to 5 years experience of data analysing and/or cleansing and at least 3+ years experience of systems implementation. Have experience of extraction & cleansing of legacy data. Being involved in at least 2 major Data migration projects. Should have strong Excel user skills along with More ❯

Lead the planning, execution and monitoring of all master data migration activities Work in close collaboration with the SI partner to deliver a seamless transition from legacy systems to the new Oracle Fusion platform Develop and implement robust data integration strategies to support efficient and secure interoperability with other internal and external systems Drive data validation … MDM teams as part of large-scale ERP programmes In-depth knowledge of Oracle Fusion Financials Cloud Extensive experience of data migration and integration from legacy finance systems Hands-on expertise with Oracle Strong stakeholder engagement and project communication skills Experience working alongside SI partners and managing cross-functional delivery Public sector experience is advantageous If you More ❯

environment using a wide array of different technologies: Microservices Dynamic data schema and SQL Server Newer technologies: .NET 8 and ReactJS Older technologies: .NET framework, AngularJS, and jQuery Design systems: Carbon You will have a structured career path supporting your technical growth from your starting position to Software Architect. What is CAS? CAS is an employee-owned software company … take pride in enhancing Workpro for everyone. We foster innovation and creativity to improve our product, keeping our skills current with the latest technologies. We support legacy systems, working with both older and newer technologies to maintain and extend the system. Ownership and pride in our work are core values. We collaborate to fix issues and celebrate … hours and compressed work schedules are supported. Short-term international work is possible, depending on circumstances. Duties Activities include: Implementing new features Fixing bugs Writing automated tests Supporting build systems Collaborating with analysts and product owners Deploying releases Modernizing legacy system components Customer support Technical documentation Out-of-hours support may occasionally be required, with a rota More ❯