1 to 25 of 72 Permanent 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 ...

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 ...

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 ...

capability that underpins the HFEA Register, PRISM and associated enterprise data services. The HFEA is undergoing significant transformation across its core legacy systems and its transition to modern cloud-native environments. The Lead Data Engineer will provide technical leadership for this evolution across Azure virtual machine workloads ...

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 ...

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 ...

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 ...

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 ...

successful, business‐critical solutions. As a consultant, you will own the solution implementation including the design, deployment, configuration and migration of legacy systems and data. The successful applicant will be experienced and comfortable in project delivery, acting as a trusted advisor to clients and adept at maintaining ...

Level 1 (Level 2 desirable) Experience delivering enterprise-scale integrations Integration experience with Salesforce, SAP, ServiceNow, AWS/Azure, databases, and legacy systems Knowledge of API security (OAuth 2.0, JWT, mTLS/SSL/TLS) Familiarity with CloudHub v2.0, Runtime Fabric, and hybrid architectures Why Apply Fully ...

Level 1 (Level 2 desirable) Experience delivering enterprise-scale integrations Integration experience with Salesforce, SAP, ServiceNow, AWS/Azure, databases, and legacy systems Knowledge of API security (OAuth 2.0, JWT, mTLS/SSL/TLS) Familiarity with CloudHub v2.0, Runtime Fabric, and hybrid architectures Why Apply Fully ...

Role You’ll lead multiple engineering teams and delivery partners, driving the build and integration of modern, cloud-based platforms while transitioning from legacy systems. This is not a hands-on coding role , but equally not a pure programme role — you’ll sit at the intersection of engineering ...