1 to 25 of 90 Legacy Systems Jobs in London

Prime Brokerage Developer VP – FX Prime Role Overview Hands‐on technical implementation of FX trading systems Work with teams across FX Technology to implement solutions that benefit the business Drive the design and development of system architecture, engage with end‐users, and enhance the quality of deliverables Contribute … responsibility Key Skills and Experience Required Proven understanding of FX (highly preferred) Understanding of low‐latency development practices Proven track record of building new systems, replacing legacy systems, and renovating existing systems Systems (software, hardware, networks) knowledge required to define solutions and troubleshoot issues ...

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 ...

data workstream. Requirement for someone to lead the full data agenda across the programme lifecycle working across legacy systems, Workday, integrations and reporting requirements. Workday Data Lead, key responsibilities: Lead data workstream across full programme lifecycle Define and deliver data strategy - data plan for Workday Financials implementation … Understanding of finance data structures including master data Experience defining and managing data strategies and data plans Previously worked across multiple legacy systems and data sources Overseeing and coordinating technical teams Strong understanding of data quality and data controls Reasonable Adjustments: Respect and equality are core values ...

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 ...

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 to 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 the company documented policy and procedures as well as maintain desktop procedures and supporting documentation for filings on a current basis and in comprehensive ...

Payments to define and then implement solutions Develop against an evolving system architecture using an AI First approach, working with end-users of the systems, and enhancing the quality of deliverables Follow best practices and processes for the department and support transparency and consistency within immediate team … contact with sales or trading business teams is required. Demonstrable understanding of FX products is preferred. Proven track record of developing aspects of new systems, migrating legacy systems and renovating existing systems The candidate will have a strong systems (software, hardware, networks) knowledge required ...

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 ...

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 … Skills and Experience Required Proven understanding of FX highly preferred. Understanding of ultra low‐latency development practices. Proven track record of building new systems, replacing legacy systems and renovating existing systems. Systems (software, hardware, networks) knowledge required to define solutions and troubleshoot issues. Exceptional communicator ...

DevOps Engineer to join a growing engineering capability and play a central role in shaping how AI is embedded into real, production-grade software systems . This is not a traditional people-management role . Instead, you'll lead through technical depth, architectural judgement, and delivery experience by setting … capabilities are integrated into modern software platforms. If you enjoy working where architecture, APIs, DevOps, and AI meet , and you care about building systems that are secure, operable, and genuinely useful, this role offers the chance to have real impact. What you'll be doing Your focus will ...

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 ...

teams’ most powerful ideas. As part of our engineering team, you’ll shape the platforms and tools that drive high‐impact research – designing systems that scale, accelerate discovery and support innovation across the firm. We are looking for an experienced Development Manager to lead two strategically important engineering groups … Infrastructure (EI): Security Automation Engineering (SAE) – the development arm of the Cyber Security Incident Response Team (CSIRT), responsible for building automated detection and response systems; Enterprise Infrastructure Application Development (EIDev) – a new and growing team responsible for building secure, scalable applications and services for G‐Research’s corporate domain. ...

Senior Systems Integration Consultant (.NET, Azure, Data, MIS) Job Description Contract Length: 3 months Start: Immediate Day Rate: £400‐£500 per day IR35: Outside IR35 Location: Hybrid, predominantly remote Overview We are looking for a senior Systems Integration Consultant to step into a live environment and stabilise … ensure the platform is fully operational. Key Responsibilities Stabilise and optimise Mitratech platform integration Extract and migrate data from legacy .NET systems Build and troubleshoot integrations across: Timesheet systems, HR workflows including Excel exports, Internal operational systems Implement workflow automation and triggers Debug live production ...

delivering a modern enterprise data platform. This is an opportunity to join a business undergoing significant data transformation, moving from legacy systems and manual processes to a scalable, automated, cloud-first architecture. You will be responsible for defining architectural standards, driving best practices, and enabling engineering teams … Star Schema patterns, Snowflake object hierarchies, and governance frameworks. Design scalable integration architectures for legacy platforms, including AS400, iSeries, and SQL-based systems, ensuring robust reconciliation, auditability, and incremental data loading capabilities. Architect modern data pipelines leveraging Snowflake and orchestration technologies, ensuring reliability, scalability, idempotency, and effective ...

from you. Required education None Preferred education Bachelor's Degree Required technical and professional expertise Extraction transformation and loading (ETL) of data from legacy system (mainly Oracle eBS) to Oracle Fusion ERP and HCM. Data mapping cleansing and validation processes to ensure accuracy and consistency. Troubleshoot data migration ...

Lead Data Engineer Hands-on technical leadership building data systems that actually work We're looking for a Lead Data Engineer to join an enterprise data engineering capability and play a critical role in designing, building, and improving real-world data systems . This is not a line … engineers and adjacent roles through design decisions, code, and delivery support Improve data sharing, onboarding of new data sources, and interoperability across teams and systems Introduce and evaluate new tools, patterns, and technologies where they genuinely add value - balancing innovation with pragmatism Build robust, production-grade solutions , not proofs ...

Description Main Purpose: Design, define, and lead architecture across corporate platforms, including Finance (reporting, audit, and controls), HR, Property, Legal, and other back-office systems, to modernise and evolve enterprise capabilities across the retail business. Provide strategic architectural leadership across ERP, core finance, and corporate platforms, enabling the organisation … progressively evolve from legacy systems (e.g. Oracle EBS) toward modern, scalable, and integrated enterprise solutions, while ensuring resilience and stability of the existing estate in the interim. Act as the design authority for corporate platforms, guiding incremental modernisation while shaping the long-term ERP and corporate systems ...

capabilities, including RAG pipelines integrating enterprise data sources such as Teams and SharePoint, agent-driven applications interfacing with internal and legacy systems, and text-to-SQL solutions enabling natural language interaction with enterprise datasets. Enable robust deployment through CI/CD-integrated pipelines and automated workflows using … regulated financial services environments, with strong understanding of regulatory, risk, and governance frameworks. AI and Engineering Capability Proven track record delivering production AI systems, including RAG-based knowledge platforms, natural language data access solutions such as text-to-SQL, and AI-powered assistants or agent frameworks. Experience developing pipelines ...

sprint goals. Your new development will be done within a Microservices architecture, but you will also be contributing to our legacy systems while we are in the transition period. Our stack runs on Azure including Front Door, App Services, Application Insights, and App Configuration with SQL Server ...

investment management with the industry’s most comprehensive cloud-native platform for institutional investors across global public and private markets. While legacy systems create risk, inefficiency, and data fragmentation, Clearwater’s single-instance, multi-tenant architecture delivers real-time data and AI-driven insights throughout the investment ...

engagements across client environments. This role focuses on shaping and delivering business and technology transformation initiatives, with particular emphasis on modernising legacy systems and services. The successful candidate will apply a user‐centred and design‐led approach across the full agile lifecycle, from Discovery through to Live … phases of delivery, from Discovery, Alpha, Beta through to Live. Facilitate and manage organisational change activities, working closely with users to embed new processes, systems and ways of working. Engage and influence senior stakeholders to build strong relationships, elicit critical information and support successful delivery outcomes. Identify opportunities ...

delivery flow. * Support effective agile ways of working, including planning, ceremonies, prioritisation and delivery discipline. * Manage dependencies across other SAP workstreams, legacy systems, integration points, data migration activities, and third-party suppliers. * Proactively identify, manage, and escalate risks, issues, and decisions, driving timely mitigation and resolution. Assess ...

Experience, Digital Media, and the wider ecosystem, including complex integrations with third‐party platforms, cloud environments (AWS, Azure, Google Cloud), and legacy systems Conduct technical assessments and North Star architecture reviews for priority portfolio companies, defining current‐state, target‐state, and transition roadmaps aligned to PE value ...

understanding, assessing, and embracing new tooling and trends within the software industry Experience building or integrating AI/ML‐powered features into products or systems (e.g., recommendation engines, NLP models, computer vision, predictive analytics) Used context‐appropriate automated testing to inform software design choices and catch bugs Successfully … modernization efforts to align legacy systems with short and long‐term business needs Remedied architecture‐level concerns such as scalability, security, reliability, and performance Facilitated alignment and collaboration across technical and non‐technical stakeholders to move initiatives forward in the face of ambiguity and complexity while balancing ...

your career at the intersection of technology, mathematics, and finance? Join an elite global trading firm where innovation drives everything—no legacy systems, no bureaucracy, just cutting‐edge tech and world‐class mentorship. You’ll work on greenfield projects from day one, collaborating with exceptional engineers, quants … researchers to build the systems and models shaping the future of global trading. The Role Depending on your track, you will focus on engineering high-performance systems or developing sophisticated mathematical models, all while learning how technology powers global markets. Key Responsibilities Designing and enhancing advanced trading systems ...

range of transformational projects for clients, mainly within the financial services sector and with a focus on Kafka messaging, migrating legacy systems to AWS and introducing CI/CD pipelines and cloud deployments. You'll join a collaborative team with a focus on engineering best practice … continuous improvement of client systems; you will have lots of business and client exposure and continual learning and development opportunities. Location/WFH: There's a hybrid work from home policy with three days a week in the London, City office (or at client sites), you'll join ...