76 to 100 of 386 Legacy Systems Jobs in the UK

of the cryptocurrency ecosystem. About the role: This role sits within GSR's global Data Engineering team, where you'll contribute to the design and development of scalable data systems that support our trading and business operations. You'll work closely with stakeholders across the firm to build and maintain pipelines, manage data infrastructure, and ensure data is reliable … responsibilities may include: Build and maintain scalable, efficient ETL/ELT pipelines for both real-time and batch processing. Integrate data from APIs, streaming platforms, and legacy systems, with a focus on data quality and reliability. Design and manage data storage solutions, including databases, warehouses, and lakes. Leverage cloud-native services and distributed processing tools (e.g., Apache More ❯

for patients and healthcare professionals. Why This Role Now? EU Expansion: Harmonise architecture across jurisdictions with varying compliance, data residency, and operational models. Platform Unification: Consolidate legacy systems into a modular, reusable platform architecture. Digital Acceleration: Enable rapid product development without compromising interoperability, governance, or safety. Cross-Functional Collaboration: Act as a unifying technical voice across Product … to articulate a future-state architecture aligned with business strategy. Principles-led Design: Grounded in sound architectural principles, not just trends. System Thinker: Views architecture as a system-of-systems — from infrastructure to UX. Pragmatic Execution: Balances scalability with lean governance; avoids overengineering. Strong Collaborator: Influences across disciplines and senior stakeholders. Regulatory Awareness: Experience designing within regulated environments (e.g. More ❯

for patients and healthcare professionals. Why This Role Now? EU Expansion: Harmonise architecture across jurisdictions with varying compliance, data residency, and operational models. Platform Unification: Consolidate legacy systems into a modular, reusable platform architecture. Digital Acceleration: Enable rapid product development without compromising interoperability, governance, or safety. Cross-Functional Collaboration: Act as a unifying technical voice across Product … to articulate a future-state architecture aligned with business strategy. Principles-led Design: Grounded in sound architectural principles, not just trends. System Thinker: Views architecture as a system-of-systems — from infrastructure to UX. Pragmatic Execution: Balances scalability with lean governance; avoids overengineering. Strong Collaborator: Influences across disciplines and senior stakeholders. Regulatory Awareness: Experience designing within regulated environments (e.g. More ❯

ll build responsive web interfaces and develop robust backend services, delivering scalable, high-performance solutions. You’ll join a fast-paced Agile team, driving new features and maintaining critical systems that support essential public services. Key Responsibilities of the Senior Software Developer: Design, develop and maintain responsive web applications focusing on user experience and accessibility Deliver frontend components using … RESTful APIs and backend services Competence in writing and optimising SQL queries for relational databases Familiarity with Agile software development methodologies and tools Experience working with legacy systems and modernisation initiatives advantageous Ability to communicate effectively with technical and non-technical stakeholders Relevant degree or equivalent professional experience in software development You’ll join a team focused More ❯

our business units. Our technology teams offer you an environment that will present you with exciting challenges - be it through the support and further development of legacy systems or the introduction of modern technologies such as AI, machine learning and highly automated trading applications. Our Technology department of around 300 employees works largely in an agile way … presenting this data on our Investment Bank website, creating new products for our clients (AI, calculation engine, multi media channels). The team also provides registration, scheduling and reporting systems for the Conferencing team which serve CEOs/CFOs, covering both small and flagship events. The team of 5 developers and 1 product owner use agile methodologies to deliver More ❯

Access Management (IdAM), and overall access governance. This role will collaborate closely with cyber security, engineering, and business stakeholders, ensuring the delivery of secure, modern platforms to replace legacy systems. Candidates based in the UK, able to work in a hybrid model (two days per week in either our London or Nuneaton office), are strongly preferred. The Role … new store and enterprise features. Technical Execution Ensure agile delivery of high-quality, secure solutions using Scrum, SAFe, or other scaled agile frameworks. Guide transitions from legacy systems to secure modern platforms with minimal disruption. Monitor and support post-implementation phases, addressing access issues, incidents, or escalations. Initial Objectives (First 3 Months) Establish and lead a comprehensive More ❯

and Access Management (IdAM), and overall access governance.This role will collaborate closely with cyber security, engineering, and business stakeholders, ensuring the delivery of secure, modern platforms to replace legacy systems. Candidates based in the UK, able to work in a hybrid model (two days per week in either our London or Nuneaton office), are strongly preferred. The Role … new store and enterprise features. Technical Execution Ensure agile delivery of high-quality, secure solutions using Scrum, SAFe, or other scaled agile frameworks. Guide transitions from legacy systems to secure modern platforms with minimal disruption. Monitor and support post-implementation phases, addressing access issues, incidents, or escalations. Initial Objectives (First 3 Months) Establish and lead a comprehensive More ❯

including travel to London once a month) Salary: £60,000 - £70,000 Network IT are looking for an exceptional Solutions Architect who come from a technical background of applications, systems, and software development. This individual will utilise their experience and technical knowledge of the above in conjunction with their fantastic stakeholder management and wider strategic expertise. This role currently … with the expectation that you travel to their Central London office once a month (expensed) . Role Overview Our client is undertaking a significant application replacement programme (over 250 systems, fluctuating in scale) to ensure the application environment which is critical to how they operate is maintained and is utilised to the highest standards. The successful candidate in this … Design Authority)) in environments with competent experience supporting high-code, low-code and COTS (Commercial Off The Shelf) products/systems. Key Responsibilities Design and govern technical architecture across systems and cloud platforms Maintain alignment with the organisations technology roadmap, working alongside a second Solution Architect Collaborate with stakeholders to understand business goals, product needs, and technical implications Translate More ❯

degree in Computer Science or related field; Master's preferred. 9+ years of software development experience, particularly in integration and data transformation. Proven ability in migrating legacy systems to modern technology stacks. Practical experience or strong enthusiasm for AI and generative technologies. Strong experience with both C#/.NET and modern web technologies (TypeScript, NodeJS, React). More ❯

Migration consultants Liaising closely with client counterparts, Accenture colleagues and Workday to achieve a robust solution Serve as the primary knowledge source for converting data from legacy systems and spreadsheets into the WorkdayCloudHCM & Financials system Intermediate understanding of ETL scripts and methodology to load data into Workday. Active involvement in (pre-)sales activities to shape the right More ❯

currently undergoing a large-scale digital transformation. They are looking for a Full Stack Developer with strong Microsoft and Azure experience to help modernise and integrate legacy systems with cloud-native, scalable applications. What You'll Do Develop and maintain full-stack solutions using .NET Core , C# , and React/Angular/Blazor Build and optimise REST More ❯

of GenAI and ML, including LLMs, RAG, MLOps, and prompt engineering Familiarity with platforms such as AWS Bedrock, Google Vertex, LangChain, or LlamaIndex Experience with both legacy systems and modern tech stacks Proven track record in agile delivery and digital transformation Excellent communication, analytical, and stakeholder management skills Willingness to travel internationally Desirable Attributes Degree in Computer More ❯

Knowledge of M365 tenant governance and lifecycle management Experience with AI capabilities within M365 (e.g., Copilot, Viva Insights) Familiarity with integrating M365 with third-party or legacy systems More ❯

with front-end teams using frameworks such as React, Vue, or Angular • Write clean, scalable code following best practices and coding standards • Troubleshoot complex issues, refactor legacy systems, and improve performance • Contribute to architectural decisions and technical planning • Participate in code reviews and mentor junior developers where needed Essential Skills & Experience • 4+ years' commercial experience with Umbraco More ❯

work in an area where remediation is required. Perhaps a client is looking to enhance a specific skillset, lacks premises or wants to move an operation forward despite legacy systems. We're there to help, delivering the very best practice through successful leveraging of data and the use of proprietary and partner technology. As companies rely on us More ❯

and documentation Running Jira and Agile ceremonies Working with the product manager to plan sprints and prioritize workload for team members Build and maintain robust, secure, and maintainable software systems end to end. Develop loosely coupled, layered software components ensuring they are replaceable, testable, and version-controlled with minimal impact on others. Embrace Clean Code and SOLID principles: your … testing frameworks. Solid understanding of RESTful services and API design. Strong understanding of software design principles (SOLID, DRY or Clean Code). Comfortable navigating and maintaining legacy systems when needed. Experience writing unit and integration tests using JUnit or similar frameworks. Excellent problem-solving skills and attention to detail. Experience in agile environments and working with ticketing … systems (e.g., Jira). Proficiency with Git and modern development workflows (CI/CD). Who are ClearCourse? ClearCourse is a disruptive tech company with one mission to help our customers businesses become even better As a business, were growing (900+ employees in 5 years to be exact), currently providing more than 40 software and payment solutions to More ❯

consultancy embedded in some of the UKs 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 Youll 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, youll bring structure, clarity, and delivery alignment to everything you do. What Youll 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 programmes, working closely … recommendations What Youll Bring as a Solution Architect: Youre 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 ❯

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 ❯

to clients in demo sessions. Overseeing configuration, testing, training, and data migration. Acting as the bridge between technical and non-technical teams. Helping to integrate BC with third-party systems and other Microsoft products. 🧠 What we’re looking for: Strong experience delivering ERP projects, especially D365 Business Central . Confident leading client workshops and scoping exercises. Experience with legacy systems like SAGE, Orderwise, Prima, etc., is a plus. Excellent communicator who can explain complex ideas clearly. Familiar with project tools like Azure DevOps, Jira, MS Project, or similar. A self-starter who enjoys autonomy but also thrives in a team. 🎯 What’s in it for you: Hybrid working A genuinely supportive team environment where your input More ❯

Responsibilities Partner with front office stakeholders such as fund managers and portfolio managers to understand investment workflows and translate them into system requirements. Analyse and decommission legacy systems, identifying functional gaps and supporting the transition to strategic platforms. Contribute to the design and integration of new solutions, leveraging modern cloud-based technologies. Collaborate with a hands-on … delivery-focused team to ensure successful implementation. Essential Skills Proficient in Python, with familiarity with legacy code bases in VBA and SQL. Strong understanding of cloud-based data ecosystems, including Snowflake, Databricks, and the Azure software stack. Deep knowledge of front and middle office processes within asset management. Solid understanding of financial instruments, trade lifecycle events, and high More ❯

metrics and are scalable Helping to shape, evolve and document the architecture that underpins the existing platforms and services and lead their on-going transition from legacy systems to cloud based architectures. Interacting with project roles as required, to gain an understanding of the complex business environment, technical context, end client requirements and organisational strategic direction. Advising … its broader eco system Deployment automation technologies The ability to code, especially Infrastructure as code Network design, implementation, and administration A track record in the design and application of systems, leveraging automation technologies A deep understanding of Virtualisation and Container technologies Design of large, complex systems including practical experimentation and development skills Has both technical breadth and depth More ❯

metrics and are scalable Helping to shape, evolve and document the architecture that underpins the existing platforms and services and lead their on-going transition from legacy systems to cloud based architectures. Interacting with project roles as required, to gain an understanding of the complex business environment, technical context, end client requirements and organisational strategic direction. Advising … its broader eco system Deployment automation technologies The ability to code, especially Infrastructure as code Network design, implementation, and administration A track record in the design and application of systems, leveraging automation technologies A deep understanding of Virtualisation and Container technologies Design of large, complex systems including practical experimentation and development skills Has both technical breadth and depth More ❯

more programming languages youre a polyglot who chooses tools pragmatically , Strong fundamentals in system design, software architecture, and data modelling , Deep experience working in complex domains such as financial systems, logistics, or workflow-heavy platforms , Hands-on experience with relational databases (PostgreSQL preferred) , Comfortable working in an event-driven, modular monolith environment , Experience with refactoring legacy systems … and implementation-focused, with strong scope for architectural input , If youre driven by complex domains, clean abstractions, and high-impact ownership, this is for you , Behind the scenes, our systems model deep commercial logic, financial rules, and real-world operations at scale , Were moving fast, redesigning our architecture for the next chapter, and hiring exceptional engineers to help us … build the future of global trade in drinks , Own the design and implementation of backend systems driving business-critical workflows, financial calculations, and operational tooling , Model domain complexity using DDD and other architectural approaches across an event-driven modular monolith , Shape and evolve our architecture as we transition from Java to Node.js/TypeScript in a modern AWS-based More ❯

programming languages - you're a polyglot who chooses tools pragmatically , Strong fundamentals in system design, software architecture, and data modelling , Deep experience working in complex domains - such as financial systems, logistics, or workflow-heavy platforms , Hands-on experience with relational databases (PostgreSQL preferred) , Comfortable working in an event-driven, modular monolith environment , Experience with refactoring legacy systems … implementation-focused, with strong scope for architectural input , If you're driven by complex domains, clean abstractions, and high-impact ownership, this is for you , Behind the scenes, our systems model deep commercial logic, financial rules, and real-world operations at scale , We're moving fast, redesigning our architecture for the next chapter, and hiring exceptional engineers to help … us build the future of global trade in drinks , Own the design and implementation of backend systems driving business-critical workflows, financial calculations, and operational tooling , Model domain complexity using DDD and other architectural approaches across an event-driven modular monolith , Shape and evolve our architecture as we transition from Java to Node.js/TypeScript in a modern AWS More ❯