76 to 100 of 272 Legacy Systems Jobs in the UK

high-performing team tackling some of the most technically demanding challenges in the defence sector. This isn't about maintaining legacy systems or shipping incremental updates - it's about building cutting-edge capability that operates at the edge, in the field, and under pressure. ## The Role … hardware environments, sensors, and robotics - the kind of engineering problems that push you to grow. You'll own code releases and deployments, support operational systems, and collaborate across disciplines to drive agile best practice into real-world solutions. ## What You'll Be Doing You'll work closely with ...

D365 HR - Systems & Support Analyst Manchester/Hybrid - one day on site every 2 weeks 18 months+ A Dynamics 365 HCM/HR Systems & Support Analyst is required to support the implementation and ongoing management of our client's D365 HR platform. You'll act as the link … scripts and lead business users through testing phases. Security Design: Experience defining and maintaining custom security roles and permissions within D365. Strong HR systems and data knowledge Confident working with stakeholders and external suppliers Desirable: Data Migration Expertise: Experience mapping and migrating complex data sets from legacy ...

This role is responsible for designing and implementing scalable, modern software solutions that meet business needs, while leading the transition of legacy systems into more flexible, web-based platforms using APIs and industry-standard practices. Technical & Architectural Skills Software architecture and system design Application modernization (legacy … Development Manager, fostering a collaborative and high-performing environment. Architect and design modern, scalable applications and integrations, with a focus on transitioning from legacy platforms to modern solutions. Collaborate with stakeholders and change management teams to gather requirements and translate them into clear, actionable technical specifications. Oversee ...

proven experience with cloud providers (AWS, Azure, or Google Cloud) and a solid understanding of modern architectural patterns, including Infrastructure as Code (IaC), containerised systems, and serverless architectures. Deep Technical Foundations: Strong, proven experience across the .NET ecosystem (C#, modern .NET, legacy frameworks), backed by solid … Mindset: A genuine curiosity and interest in continuous learning. You aren’t dogmatic about tech stacks; you view different languages, older legacy systems, and modern front-end frameworks (like React, Vue, or Angular) as tools to solve problems, and you are eager to pick them ...

will be enhancing data integration, modelling, and accessibility to support reporting and operational decision-making, while facilitating the ongoing migration from legacy systems to Azure. You will collaborate closely with internal Business Intelligence and technology teams, helping to establish best practises across data engineering and platform performance. … Data Factory Azure Data Lake SQL ETL/ELT pipeline development Power BI data modelling and reporting integration Experience with SSIS, SSRS, or legacy SQL environments (desirable) Most importantly, we seek someone who combines strong technical expertise with a commercial mindset and a collaborative approach. ...

with C-suite stakeholders, global engineering teams, and external partners to embed AI-first thinking, accelerate innovation, and shape the future of intelligent enterprise systems-including emerging paradigms such as the agentic web. Key Responsibilities Strategic Leadership & Governance Define and execute the enterprise-wide AI & Intelligent Automation strategy Establish … deployments using Kubernetes, Docker, and Infrastructure-as-Code Enterprise Integration (.NET Focus) Integrate AI capabilities into enterprise-grade .NET ecosystems Modernise legacy systems using microservices, APIs, and event-driven architectures Embed DevSecOps best practices across all engineering workflows Intelligent Automation Drive enterprise automation using tools like Power ...

exceptional van callout (1 in 3-4) Requirements • 5 years in electronic security • Experience with enterprise and legacy systems • Competent with servers, firmware, commissioning & fault finding Systems Experience (some of) • Milestone Systems, Genetec, Avigilon • Gallagher, Lenel, Nedap • CCure, AMAG, S2 • 2N, Zenitel Profile • Strong ...

post-trade processing across multiple Securities Finance transaction types. This is a high-impact delivery role within a critical programme replacing legacy systems, where the successful candidate will be expected to contribute quickly and operate with minimal hand-holding. Responsibilities: Contribute to the design and build … core software engineering principles. Proven architecture and system design capability, including ability to decompose problems and articulate design rationale. Experience building and supporting production systems in a high-pressure delivery environment. Working knowledge of SQL/relational databases. Experience working in Agile environments, including exposure to automated testing ...

Senior Software Engineer, you’ll help evolve our healthcare software portfolio, working on both AWS‐based cloud applications and business‐critical production systems used in clinical environments. You’ll play a key role in our transition from on‐premise solutions to modern cloud architectures, while maintaining reliability, compliance … team. Key Responsibilities Design and deliver scalable, secure software using C#/.NET Contribute to AWS‐hosted services and modernisation of legacy systems Influence architecture, cloud adoption, and engineering standards Write high‐quality, well‐tested code and lead strong review practices Collaborate with cross‐functional stakeholders ...

consistency . Collaboration: Work alongside Architecture and Cloud teams to ensure solutions are scalable and secure. Modernization: Drive the transition from legacy systems to VXLAN/EVPN fabrics and SD-WAN technologies. Essential Technical Skills (The 'Must-Haves') To be successful, you need deep, hands-on expertise … Nice-to-Haves') Aruba Central/ClearPass SD-WAN technologies SaaS and cloud-delivered WLAN/WiFi solutions Prior experience modernizing large-scale legacy public sector networks What This Role Is Not Not an Operations-only or monitoring role. Not a pure SRE role without deep networking roots. ...

This is a business where software directly supports real-world decision-making, and where developers work closely with users who genuinely depend on the systems they build. The role is fully remote (UK-based) and offers a salary of up to £70,000, depending on experience. Role … understand issues, requirements and opportunities for improvement Delivering fixes, small enhancements and new tools or services based on real user needs Supporting live production systems, including investigation and resolution of application issues Contributing to improvements in architecture, tooling and development practices over time Core Technology Stack Java (server-side ...

organisation is evolving from a legacy PHP platform to a modern, cloud-native, AI-enabled architecture, offering the chance to shape greenfield systems and influence engineering direction. Senior Full-Stack Software Engineer Responsibilities Design and build scalable full-stack applications using TypeScript, Node.js, and React Lead … migration from legacy PHP systems to a modern JavaScript/TypeScript stack Develop and maintain cloud infrastructure on AWS (EKS, S3, DynamoDB) using Terraform (IaC) Build and optimise CI/CD pipelines (GitHub Actions) to enable efficient delivery Contribute to AI-enabled software development, including AI-assisted ...

Title: Engineering Lead (C++) - Low Latency/Trading Systems Location: London (Hybrid) Overview Our client is a global fintech operating at scale across trading, risk, and market connectivity. They are hiring an Engineering Lead (C++) to take ownership of a business-critical platform sitting at the heart of real … Define and deliver a clear technical and product vision Improve release processes, reducing downtime and increasing deployment frequency Drive modernisation across legacy systems, infrastructure, and tooling Collaborate closely with trading, quant, and risk stakeholders Remain hands-on, contributing to production-grade C++ code What They're Looking ...

trillion on benefits every year. It’s their second-largest cost after payroll — yet the entire category is still running on legacy systems and outdated assumptions. The space is primed for transformation: despite its scale, it’s been almost completely overlooked by AI-first startups. Incumbents — including … deployment, and iteration of our next-generation benefits platform features that leverage personalization, experimentation, and AI/ML methods (e.g. agents/LLMs, recommender systems, reinforcement learning) to enhance user experience in a meaningful business domain. Contribute across the tech stack: You’ll work in React (JavaScript/TypeScript ...

delivery of a critical Command, Control, Communications, and Computers (C4) capability. This programme spans multiple security domains and aims to modernise legacy systems into agile, configurable operational information services aligned with Defence's vision of a Platform (DaaP). What you'll be doing: Manage all proposed ...

products. With a strong reputation for solving complex technical challenges, they work with leading organisations to deliver AI-enabled solutions, modernise legacy systems, and build high-performance applications. Their teams are distributed globally and operate in a highly collaborative, engineering-led environment. The Role As a Technical ...

containers, serverless, broader ecosystem) What They're Looking For Strong platform/solution architecture experience in modern cloud environments Background building scalable, distributed systems Ability to operate at a senior stakeholder level Strong communication and influencing skills A modern engineering mindset (not tied to legacy approaches … This Role Shape a next-generation platform, not maintain legacy systems High visibility with direct impact on business growth and platform direction Environment investing heavily in modern engineering and cloud If you think you have the necessary skills and experience then please apply now! McGregor Boyall ...

DWP. Digital with Purpose. Join DWP as a Senior Software Engineer in the PTP-MOSS team, maintaining and improving vital legacy systems that enable services for millions across the UK. Our DWP Digital teams use fresh ideas and leading-edge tech to build and maintain digital solutions … Java. You and your role As a Software Engineer at DWP Digital, you will play a vital role in maintaining and enhancing the systems that underpin some of the UK's most essential public services. You'll work on complex legacy applications that support DWP operations, ensuring ...

DWP. Digital with Purpose. Join DWP as a Senior Software Engineer in the PTP-MOSS team, maintaining and improving vital legacy systems that enable services for millions across the UK. Our DWP Digital teams use fresh ideas and leading-edge tech to build and maintain digital solutions … Java. You and your role As a Software Engineer at DWP Digital, you will play a vital role in maintaining and enhancing the systems that underpin some of the UK's most essential public services. You'll work on complex legacy applications that support DWP operations, ensuring ...

DWP. Digital with Purpose. Join DWP as a Senior Software Engineer in the PTP-MOSS team, maintaining and improving vital legacy systems that enable services for millions across the UK. Our DWP Digital teams use fresh ideas and leading-edge tech to build and maintain digital solutions … Java. You and your role As a Software Engineer at DWP Digital, you will play a vital role in maintaining and enhancing the systems that underpin some of the UK's most essential public services. You'll work on complex legacy applications that support DWP operations, ensuring ...

DWP. Digital with Purpose. Join DWP as a Senior Software Engineer in the PTP-MOSS team, maintaining and improving vital legacy systems that enable services for millions across the UK. Our DWP Digital teams use fresh ideas and leading-edge tech to build and maintain digital solutions … Java. You and your role As a Software Engineer at DWP Digital, you will play a vital role in maintaining and enhancing the systems that underpin some of the UK's most essential public services. You'll work on complex legacy applications that support DWP operations, ensuring ...

teams to turn complex requirements into reliable software. Contribute to tools involving pricing, scenario analysis, risk views, reporting, and data visualisation. Design scalable, maintainable systems that can handle data-intensive and computation-heavy use cases. Improve performance, accuracy, and usability across existing analytics platforms. Work with legacy systems where needed, while helping modernise and improve the overall engineering landscape. Apply strong mathematical and analytical thinking to solve complex real-world financial problems. Requirements : Degree in a numerical or technical discipline such as Mathematics, Physics, Engineering, Computer Science, Quantitative Finance , or similar. A minimum ...

teams to turn complex requirements into reliable software. Contribute to tools involving pricing, scenario analysis, risk views, reporting, and data visualisation. Design scalable, maintainable systems that can handle data-intensive and computation-heavy use cases. Improve performance, accuracy, and usability across existing analytics platforms. Work with legacy systems where needed, while helping modernise and improve the overall engineering landscape. Apply strong mathematical and analytical thinking to solve complex real-world financial problems. Requirements : Degree in a numerical or technical discipline such as Mathematics, Physics, Engineering, Computer Science, Quantitative Finance , or similar. A minimum ...

Data Migration Lead to support a major transformation programme. This role will focus on the migration of complex datasets from legacy housing systems, including Capita Open Housing , into a new target platform. The Role As the Data Migration Lead, you will take ownership … support delivery Key Skills and Experience Proven experience as a Data Migration Lead on complex transformation programmes Experience with legacy housing systems, ideally Capita Open Housing Strong knowledge of ETL processes and frameworks Proficiency in SQL, scripting, and data extraction techniques Experience working with multiple data sources ...

Data Migration Lead to support a major transformation programme. This role will focus on the migration of complex datasets from legacy housing systems, including Capita Open Housing, into a new target platform. The Role As the Data Migration Lead, you will take ownership … support delivery Key Skills and Experience Proven experience as a Data Migration Lead on complex transformation programmes Experience with legacy housing systems, ideally Capita Open Housing Strong knowledge of ETL processes and frameworks Proficiency in SQL, scripting, and data extraction techniques Experience working with multiple data sources ...