1 to 25 of 189 Legacy Systems Jobs in London

Governance: Develop, maintain, and realize architecture standards and principles that guide technology decisions across the organization. Technology Oversight: Provide strategic oversight of Awin’s systems, platforms, and infrastructure, including legacy systems and cloud-native environments. Integration Leadership: Lead architecture reviews and integration efforts across domains such … experts to ensure architectural consistency and scalability. Strategic Planning: Contribute to long-term planning for platform evolution, including the sunsetting of legacy systems and migration to unified platforms. Mentorship & Enablement: Support solution architects and engineering teams by providing architectural guidance and fostering a culture of technical excellence. ...

strategy. Create and maintain roadmaps for legacy transformation and decommissioning, including detailed plans and timelines for phasing out legacy systems while ensuring continuity of operations and minimising risks. Ensure solutions comply with legislation and cybersecurity standards. Establish and maintain architectural principles and standards, formalising … KPIs that measure the effectiveness, agility, and value of the enterprise architecture. Improve user experience with modern technology and streamlined legacy systems, increasing efficiency. Promote system interoperability across council boundaries to reduce administrative burdens and boost public engagement. Foster a one-team culture across technology and council. ...

strategy. Create and maintain roadmaps for legacy transformation and decommissioning, including detailed plans and timelines for phasing out legacy systems while ensuring continuity of operations and minimising risks. Ensure solutions comply with legislation and cybersecurity standards. Establish and maintain architectural principles and standards, formalising … KPIs that measure the effectiveness, agility, and value of the enterprise architecture. Improve user experience with modern technology and streamlined legacy systems, increasing efficiency. Promote system interoperability across council boundaries to reduce administrative burdens and boost public engagement. Foster a one-team culture across technology and council. ...

direct impact on millions of lives? You'll take the lead in defining the technical future, steering the transition from legacy PHP systems to a modern, scalable platform built with Laravel, InertiaJS, and Vue 3. With solid groundwork already in place, you'll have real freedom … next generation of our products. This role would suit an experienced PHP developer who's ready to step beyond maintaining legacy systems and help build something modern, scalable, and genuinely impactful. If you're excited by the idea of using your technical skills to support a Tech ...

sole complex and technical challenges. You'll take the lead in defining the technical future, steering the transition from legacy PHP systems to a modern, scalable platform built with Laravel, InertiaJS, and Vue 3. With solid groundwork already in place, you'll have real freedom to shape … next generation of our products. This role would suit an experienced PHP developer who's ready to step beyond maintaining legacy systems and help build something modern, scalable, and genuinely impactful. If you're excited by the idea of using your technical skills to support a Tech ...

sole complex and technical challenges. You'll take the lead in defining the technical future, steering the transition from legacy PHP systems to a modern, scalable platform built with Laravel, InertiaJS, and Vue 3. With solid groundwork already in place, you'll have real freedom to shape … next generation of our products. This role would suit an experienced PHP developer who's ready to step beyond maintaining legacy systems and help build something modern, scalable, and genuinely impactful. If you're excited by the idea of using your technical skills to support a Tech ...

Join Our Team as a Finance Systems Lead at Foster + Partners Foster + Partners is one of the world’s most innovative and respected studios for sustainable architecture, urbanism, engineering, and design. Founded by Norman Foster in 1967, we’ve grown into a global community of over … expand, we’re implementing a new ERP platform to support the next chapter of our growth — and we’re looking for a skilled Finance Systems Lead to help shape that future. About the role As our Finance Systems Lead , you will own and optimise F+P’s financial systems ...

critical financial applications that support Reference Data, the backbone of trading and market workflows. This role offers the chance to upgrade legacy systems, improve reliability, and ensure data-driven systems remain secure and maintainable for the future. Responsibilities: Take legacy applications written in Kotlin … Java, and C# and bring them up to modern standards Review and understand existing systems to identify areas for improvement Plan and execute upgrades, ensuring seamless integration and minimal disruption Collaborate with engineers and stakeholders to maintain high code quality, security, and performance Document improvements and share knowledge ...

critical financial applications that support Reference Data, the backbone of trading and market workflows. This role offers the chance to upgrade legacy systems, improve reliability, and ensure data-driven systems remain secure and maintainable for the future. Responsibilities: Take legacy applications written in Kotlin … Java, and C# and bring them up to modern standards Review and understand existing systems to identify areas for improvement Plan and execute upgrades, ensuring seamless integration and minimal disruption Collaborate with engineers and stakeholders to maintain high code quality, security, and performance Document improvements and share knowledge ...

autonomy over where you work from? You'll take the lead in defining the technical future, steering the transition from legacy PHP systems to a modern, scalable platform built with Laravel, InertiaJS, and Vue 3. With solid groundwork already in place, you'll have real freedom … next generation of our products. This role would suit an experienced Lead PHP developer who's ready to step beyond maintaining legacy systems and help build something modern, scalable, and genuinely impactful. If you're excited by the idea of using your technical skills to support ...

autonomy over where you work from? You'll take the lead in defining the technical future, steering the transition from legacy PHP systems to a modern, scalable platform built with Laravel, InertiaJS, and Vue 3. With solid groundwork already in place, you'll have real freedom … next generation of our products. This role would suit an experienced Lead PHP developer who's ready to step beyond maintaining legacy systems and help build something modern, scalable, and genuinely impactful. If you're excited by the idea of using your technical skills to support ...

scale insurance carriers. This role is critical in ensuring seamless connectivity between Insurance platforms (e.g., Guidewire PolicyCenter, BillingCenter, ClaimCenter, Reinsurance Management) and external enterprise systems, InsurTech platforms, regulatory bodies, and cloud environments. Key Responsibilities: Integration Architecture & Solution Design Architect scalable, high-performance, and secure integration solutions for Insurance policy … real-time claims validation, risk modeling, and actuarial data processing. Lead legacy modernization efforts, defining data migration strategies from on-prem core systems to insurance platforms. Design and implement Guidewire Edge APIs, GX Models, Messaging Framework, and Integration Gateway for external system connectivity. Optimize performance, security ...

scale insurance carriers. This role is critical in ensuring seamless connectivity between Insurance platforms (e.g., Guidewire PolicyCenter, BillingCenter, ClaimCenter, Reinsurance Management) and external enterprise systems, InsurTech platforms, regulatory bodies, and cloud environments. Key Responsibilities: Integration Architecture & Solution Design Architect scalable, high-performance, and secure integration solutions for Insurance policy … real-time claims validation, risk modeling, and actuarial data processing. Lead legacy modernization efforts, defining data migration strategies from on-prem core systems to insurance platforms. Design and implement Guidewire Edge APIs, GX Models, Messaging Framework, and Integration Gateway for external system connectivity. Optimize performance, security ...

global client, operating multiple business lines, is hiring a Group People Technology Manager to own its people technology strategy and HR systems landscape. This high-impact role sits at the heart of the People function, driving digital transformation, employee experience and HR data insights. Key Responsibilities Technology Strategy & Delivery … Lead the development and execution of a global people technology roadmap. Act as the technical expert across all HR systems, supporting escalations and representing technology needs in planning forums. User Experience & Process Improvement Drive system integration and automation to improve employee experience and data flow. Lead enhancements and tooling ...

global client, operating multiple business lines, is hiring a Group People Technology Manager to own its people technology strategy and HR systems landscape. This high-impact role sits at the heart of the People function, driving digital transformation, employee experience and HR data insights. Key Responsibilities Technology Strategy & Delivery … Lead the development and execution of a global people technology roadmap. Act as the technical expert across all HR systems, supporting escalations and representing technology needs in planning forums. User Experience & Process Improvement Drive system integration and automation to improve employee experience and data flow. Lead enhancements and tooling ...

requirements into scalable technical solutions in collaboration with Product, Compliance, and Business stakeholders. Architecting and developing secure, high-performance financial applications Designing robust backend systems ensuring high availability and data integrity. Driving adoption of modern DevOps practices Developing and exposing APIs for secure and efficient data exchange. Implementing secure … development practices Optimizing application and database performance through query tuning, caching, and asynchronous processing. Monitoring and troubleshooting production systems Collaborating with QA teams to ensure comprehensive test coverage Supporting modernization of legacy systems, including migration to microservices, cloud-native architectures, and event-driven systems Maintaining ...

requirements into scalable technical solutions in collaboration with Product, Compliance, and Business stakeholders. Architecting and developing secure, high-performance financial applications Designing robust backend systems ensuring high availability and data integrity. Driving adoption of modern DevOps practices Developing and exposing APIs for secure and efficient data exchange. Implementing secure … development practices Optimizing application and database performance through query tuning, caching, and asynchronous processing. Monitoring and troubleshooting production systems Collaborating with QA teams to ensure comprehensive test coverage Supporting modernization of legacy systems, including migration to microservices, cloud-native architectures, and event-driven systems Maintaining ...

/CD pipelines and developer tooling, while embedding security-by-default, reliability and scalability into the platform. You'll modernise legacy systems, build new backend capabilities, and make pragmatic engineering decisions that balance delivery speed, quality and long-term maintainability. Core Responsibilities Platform Engineering … reliability, scalability, and cost efficiency through automation and platform standards Backend Engineering Own, maintain, and evolve backend services across legacy and greenfield systems Design and implement scalable backend architectures using Node.js, TypeScript, and NestJS Build and operate RESTful APIs and event-driven systems (queues/topics ...

focused on creating a cohesive architecture that supports business growth and operational excellence. You'll assess the current technology landscape across trading systems, finance, and middle office, identify gaps, and design a roadmap to leave legacy systems behind and build a modern, integrated ecosystem. This … hands-on coding role - it's about vision, strategy, and influence. You'll guide the mapping and research phase, evaluate pricing and trading systems, and make informed recommendations that transform how we operate. We need someone who can bridge the gap between technology and business. What ...

focused on creating a cohesive architecture that supports business growth and operational excellence. You'll assess the current technology landscape across trading systems, finance, and middle office, identify gaps, and design a roadmap to leave legacy systems behind and build a modern, integrated ecosystem. This … hands-on coding role - it's about vision, strategy, and influence. You'll guide the mapping and research phase, evaluate pricing and trading systems, and make informed recommendations that transform how we operate. We need someone who can bridge the gap between technology and business. What ...

Lead C# Engineer – Core Trading Systems - Global Multi-Asset Investment Firm - London - Up to £400k TC Our client is a globally recognized, multi-asset investment firm managing over $25 billion in assets on behalf of a major philanthropic foundation and select institutional partners. Operating as both a family office … culture that values intellectual rigor, collaboration, and innovation. The firm emphasizes ownership, development, and accountability, empowering individuals to think creatively, challenge assumptions, and build systems that drive real performance impact. The Opportunity We are seeking a Software Engineer to join the firm’s Core Development team, which builds ...

Lead C# Engineer – Core Trading Systems - Global Multi-Asset Investment Firm - London - Up to £400k TC Our client is a globally recognized, multi-asset investment firm managing over $25 billion in assets on behalf of a major philanthropic foundation and select institutional partners. Operating as both a family office … culture that values intellectual rigor, collaboration, and innovation. The firm emphasizes ownership, development, and accountability, empowering individuals to think creatively, challenge assumptions, and build systems that drive real performance impact. The Opportunity We are seeking a Software Engineer to join the firm’s Core Development team, which builds ...

Ideally S-100 but S-57 at a minimum. Cloud & Legacy Migration Successfully contributed to the migration of critical legacy systems to cloud-based infrastructure. Working knowledge of a major cloud provider (e.g., AWS, Azure, or GCP) and familiarity with Infrastructure as Code (IaC) tools … application development using frameworks such as ASP.NET MVC, Razor Pages, or Blazor Server. Nice to have skills. BPSS Clearance Required Experience with GIS systems and geospatial data formats like GeoJSON or MBTiles. Familiarity with hydrographic and navigational charts Experience with chart compilation tools or GIS platforms used for hydrographic ...

Ideally S-100 but S-57 at a minimum. Cloud & Legacy Migration Successfully contributed to the migration of critical legacy systems to cloud-based infrastructure. Working knowledge of a major cloud provider (e.g., AWS, Azure, or GCP) and familiarity with Infrastructure as Code (IaC) tools … like Terraform or CloudFormation. Experience working on large, complex codebases and legacy systems. Nice to have skills. Knowledge of S-101 (ENC) and other S-100 product specifications Experience with chart compilation tools or GIS platforms used for hydrographic data processing. Experience with Azure DevOps and CI/ ...

scalable services using Python as the primary backend language, while supporting existing services built in Java and .NET. Maintain and enhance legacy systems using Oracle SQL PL. Implement Test-Driven Development (TDD) practices, ensuring automated tests are written prior to code development. Work with complex data challenges ...