1 to 25 of 131 Legacy Systems Jobs in London

engineering performance across delivery, quality and technical standards, while helping shape the next phase of platform evolution. This includes modernising legacy systems, driving adoption of modern technologies and embedding AI-led efficiencies into both internal engineering workflows and customer-facing products. The Role Reporting directly … high-performing engineering function across multiple disciplines Own engineering delivery, release quality and technical execution Drive platform modernisation and migration from legacy systems to modern architectures Build scalable, modular, service-oriented systems and technical standards Oversee DevOps, infrastructure reliability, monitoring and release processes Foster strong collaboration ...

only by models, data, or compute. The harder problem is execution: how AI work actually runs inside an organization, alongside humans, legacy systems, outsourced teams, compliance requirements, and operational constraints. Noxus helps regulated enterprises redesign and run complex operations with AI workers. These workers do not just … answer questions. They read inbound requests, understand documents, gather evidence across systems, apply policies, request approvals when needed, and write outcomes back into core operational tools with full traceability. We are built for legacy-heavy environments where critical work runs across SAP, Oracle, CRM platforms, policy systems ...

Head of Branch & Retail Experience is accountable for defining and delivering the technology product strategy for Post Office branch systems and services across the UK network. This is a senior leadership role with end-to-end ownership of core branch platforms, including EPOS and branch services, playing a central … centre of a major transformation programme to modernise the core branch technology estate, with a strong emphasis on transitioning from legacy systems to modern, integrated platforms underpinned by SAP-based ecosystems (e.g. S/4HANA and associated finance and retail capabilities). The Head of Branch & Retail ...

ENABLE hybrid cloud transformation – You will implement modern hybrid data architectures (e.g. Snowflake, Redshift, BigQuery) and drive the migration of legacy systems to cloud-native solutions that unlock agility and performance. We INNOVATE with AI-driven data solutions – You will create Proof of Concepts and Minimum Viable … understanding of ETL/ELT processes and modern architecture patterns such as Data Mesh and Data Fabric. Migration & Transformation: Experience migrating legacy systems to cloud-native data stores. Consulting & Commercial Acumen – Strong background in advisory roles, project scoping, budgeting and managing complex stakeholder relationships. SC Cleared/ ...

devices, apps, and platforms they use every day. This position sits at the heart of Spotify’s Content Platform, responsible for the systems that define, structure, and govern all content across the platform. Our mission is to provide a trusted, consistent source of truth so content can be reliably … managed and reused across every Spotify experience. We build and operate the core systems and workflows that ensure content is accurate, complete, and available; from APIs and life cycle orchestration through to content quality and integrity. As Spotify’s content ecosystem continues to grow in scale and complexity — across ...

teams, driving large‐scale modernization programs, and fostering a culture of innovation. You will be at the forefront of transforming our legacy systems into a modern, data‐enabled, and microservices‐based architecture to support our growing business needs. Key Responsibilities Technology Leadership & Strategy Define and execute … Finance, Agency Lending, or Collateral Management/Optimization is strongly preferred. Proven experience leading a successful, large‐scale technology transformation from legacy systems to a microservices‐based architecture. Education Bachelor’s or Master’s degree in Computer Science, Engineering, or a related technical field. Desired Skills Technical ...

teams, driving large-scale modernization programs, and fostering a culture of innovation. You will be at the forefront of transforming our legacy systems into a modern, data-enabled, and microservices-based architecture to support our growing business needs.**Key Responsibilities*** **Technology Leadership & Strategy:** + Define and execute … Agency Lending, or Collateral Management/Optimization is strongly preferred. + Proven experience leading a successful, large-scale technology transformation from legacy systems to a microservices-based architecture.* **Education:** + Bachelor’s or Master’s degree in Computer Science, Engineering, or a related technical field.**Desired Skills ...

confidently govern third-party delivery to high standards. The Role You'll play a key role in designing and shaping scalable, resilient systems across e-commerce and integration platforms. Working closely with internal teams and external vendors, you'll ensure solutions are robust, secure, and aligned with long-term … third-party code and architecture to ensure adherence to defined standards and best practices. Integration Leadership: Lead complex data integrations between legacy systems and modern API-driven middleware environments. Problem Resolution: Investigate recurring system issues (e.g. performance, errors, data inconsistencies) and implement sustainable, long-term solutions. Documentation ...

delivering FX technology in support of our #1 FX business. Role Overview/What will you do: Hands on technical implementation of FX trading systems The successful candidate will work with teams across FX Trading Technology implement solutions that benefit the business The role does not involve budget responsibility … Drive the design and development of system architecture, work with end-users of the systems, and enhance the quality of deliverables Ensure staff follows Citi documented policy and procedures as well as maintain desktop procedures and supporting documentation for filings on a current basis and in comprehensive manner Contribute ...

/CTO for SymphonyAI’s Supply Chain Division in EMEA, responsible for driving a multi-year transformation from legacy on-premise systems to a cloud-native, AI-first composable SaaS platform. Lead platform architecture, large engineering teams (150–300+), generative AI integration, client-facing technology engagements … based in EMEA (Paris headquarters) and includes global engineering leadership and client-facing responsibilities. Key Responsibilities Define and own the multi-year roadmap for Systems of Execution (WMS, TMS, OMS) and Systems of Intelligence (demand planning, supply optimization, decision analytics). Architect transformation from monolithic legacy ...

focused organisation bringing together multiple specialist businesses, each with its own technology stack and domain expertise. Their central technical team is responsible for unifying systems, modernising legacy platforms, and building AI-enabled capabilities that can be leveraged across the group. The environment is highly collaborative, delivery-focused … unlock value from group data Develop prototypes that validate ideas quickly and can be demonstrated on a weekly basis Modernise legacy systems using AI-assisted analysis and development approaches Wrap existing systems with clean, scalable APIs to enable wider consumption Generate documentation, tests, and migration tooling ...

play a pivotal role. This is a high-impact position where you'll lead the end-to-end migration from legacy billing systems to a modern, scalable platform , while owning the digital billing experience across customer channels. You'll sit at the intersection of product, technology … billing migration strategy and execution Own the migration roadmap, including dependencies, risks, and key milestones Oversee transition from legacy systems with minimal/no customer disruption Ensure pricing integrity, service continuity, and regulatory compliance throughout Proactively resolve product, billing, and integration challenges Digital Product Ownership Own billing ...

only by models, data, or compute. The harder problem is execution: how AI work actually runs inside an organization, alongside humans, legacy systems, outsourced teams, compliance requirements, and operational constraints. Noxus helps regulated enterprises redesign and run complex operations with AI workers. These workers do not just … answer questions. They read inbound requests, understand documents, gather evidence across systems, apply policies, request approvals when needed, and write outcomes back into core operational tools with full traceability. We are built for legacy-heavy environments where critical work runs across SAP, Oracle, CRM platforms, policy systems ...

Architect to shape the technology behind our Gas & Power Trading International (GPTI) business. This role sits across the full trading landscape from front-office systems to back-office processing, data platforms, integrations and infrastructure. Youll take ownership of the technology roadmap, with a strong focus on the Endur … technology is aligned, scalable and fit for the future. Youll play a key role in modernising our estate moving from legacy systems to more cloud-based and hybrid solutions while keeping performance and reliability at the level required for real-time trading. Were also looking for someone ...

only by models, data, or compute. The harder problem is execution: how AI work actually runs inside an organization, alongside humans, legacy systems, outsourced teams, compliance requirements, and operational constraints. Noxus helps regulated enterprises redesign and run complex operations with AI workers. These workers do not just … answer questions. They read inbound requests, understand documents, gather evidence across systems, apply policies, request approvals when needed, and write outcomes back into core operational tools with full traceability. We are built for legacy-heavy environments where critical work runs across SAP, Oracle, CRM platforms, policy systems ...

only by models, data, or compute. The harder problem is execution: how AI work actually runs inside an organization, alongside humans, legacy systems, outsourced teams, compliance requirements, and operational constraints. Noxus helps regulated enterprises redesign and run complex operations with AI workers. These workers do not just … answer questions. They read inbound requests, understand documents, gather evidence across systems, apply policies, request approvals when needed, and write outcomes back into core operational tools with full traceability. We are built for legacy-heavy environments where critical work runs across SAP, Oracle, CRM platforms, policy systems ...

environments Define, implement, and enforce robust SOPs for backups, disaster recovery, patch management, and hardware lifecycle Ensure reliable connectivity between legacy core systems and modern application platforms Oversee internal security monitoring and collaborate with external security partners (SOC/MDR) Lead incident and problem management activities, including … including incident, problem, and change management processes Experience with ITSM tools (e.g., Jira) and working within SLA-driven environments Familiarity with legacy systems connectivity (e.g., AS/400/iSeries) is highly beneficial ...

human and autonomous agent workloads, leveraging leading cloud platforms (AWS, Azure, GCP). We ENABLE agentic and hybrid cloud transformation – Modernise legacy systems into AI-native, agent-enabled architectures, integrating hybrid data platforms that support orchestration of intelligent agents and real-time decisioning. We OPTIMISE and SECURE … Concepts and MVPs that incorporate autonomous agents, advanced analytics, and AI capabilities, aligned to enterprise outcomes and measurable business value. We AUTOMATE through intelligent systems – Build and orchestrate self-optimising data pipelines, infrastructure, and deployments using DevOps, CI/CD, Infrastructure-as-Code, and AI-assisted automation. We DEFINE ...

distribution of tick, timeseries, reference and alternative datasets. The technology stack is similarly varied including a range of legacy and modern systems, across on-premises and cloud infrastructure. The business is currently midway through massive technology modernisation therefore there is ample opportunity to work on greenfield projects … looking for someone passionate about technology who stays current with industry trends, follows engineering best practices, and is always looking for opportunities to improve systems, processes, and performance. Responsibilities Developing ELT/ETL pipelines to ingest and transform datasets with Python, Snowflake and dbt. Building a streaming platform (Kafka ...

auditability. Design data governance, security, access control, and compliance frameworks for insurance data. Support cloud migration, data warehouse modernisation, reporting transformation, and legacy system decommissioning initiatives. Your Skills: Strong experience as a Data Architect or Senior Data Architect. Strong hands-on experience with Azure Databricks. Strong architecture ...

modules. This role will provide dedicated programme management leadership across the technical delivery of the programme, helping to replace a manual and intensive HR systems offering with an integrated, secure and scalable Oracle-based solution. A key focus of the role will be maintaining delivery momentum in a complex … Programme Manager will help ensure the programme delivers the intended operational, financial and strategic benefits, while supporting a smooth transition from legacy systems to the new Oracle HCM environment. This role will require the following experience: Successful experience of delivering Oracle HCM system implementations, ideally within ...

modules. This role will provide dedicated programme management leadership across the technical delivery of the programme, helping to replace a manual and intensive HR systems offering with an integrated, secure and scalable Oracle-based solution. A key focus of the role will be maintaining delivery momentum in a complex … Programme Manager will help ensure the programme delivers the intended operational, financial and strategic benefits, while supporting a smooth transition from legacy systems to the new Oracle HCM environment. This role will require the following experience: Successful experience of delivering Oracle HCM system implementations, ideally within ...

ontology capabilities. Experience in multi-cloud and data migration environments: Experience working with data environments in Microsoft Asure, AWS, and legacy systems, and a proven ability to consolidate and migrate data processes and workloads into Palantir Foundry as part of a broader data strategy. Data-driven business ...

PowerServer Engineer to support audit, investigation, and strategic planning activities related to our existing PowerBuilder/PowerServer applications. The ideal candidate will assess current systems, identify gaps, and provide actionable recommendations for optimization, modernization, or migration. Key Responsibilities Perform comprehensive audit and assessment of existing PowerServer/PowerBuilder applications … auditing, system analysis, or consulting roles Solid understanding of client-server and web-based architectures Experience in performance tuning and troubleshooting Knowledge of database systems (SQL Server, Oracle, etc.) Ability to analyze legacy systems and recommend modernization approaches Strong documentation and reporting skills Excellent problem-solving ...

Public Sector organisation are seeking a HR Systems Analyst to provide technical analysis and business analysis skills on a HR Systems implementation programme. The HR System Analyst will play a key role in supporting the design, configuration and implementation of new Oracle Cloud HCM platform as part … wider transformation programme. This role will provide specialist technical expertise to help replace the current HR systems landscape with an integrated, secure and scalable Oracle-based solution to further improve the employee, manager and HR experience. Working closely with HR, IT, Finance, project resources and 3rd party specialists ...