1 to 25 of 60 Legacy Systems Jobs in London

across functional workstreams, ensuring data meets architectural, compliance, and governance standards. Key Responsibilities Extract and prepare HR and employee data from legacy systems for migration into Workday Transform, cleanse, and validate datasets to meet agreed standards and Workday requirements Conduct data gap analysis and support remediation … delivery Experience/Knowledge needed: Experience of working with the HR function Excellent abilities when it comes to extracting data from legacy systems, cleansing data, validating data, transforming data and preparing to hand over to the IMPL Data lead. Demonstrable HR data architecture experience Identify and analyse ...

About Kodesage Kodesage is an AI-powered platform that captures and structures knowledge locked inside legacy systems - including codebases, documentation, and support tickets - and makes it accessible across engineering, QA, and production teams. Deployed on-premise first, it works even in air-gapped environments, making … fast-moving team passionate about solving complex engineering challenges If you're excited about helping enterprises unlock knowledge from legacy systems and shaping the story of an AI company from the ground up, we’d love to hear from you. ...

Infrastructure Systems Manager Hours: Full-time (35 hours per week) Contract: 12-month fixed-term Location: Central London office Working pattern: Fully remote with occasional travel to London Salary: £35,825 , rising to £38,065 after six months’ serviceWe’re recruiting an Infrastructure Systems Manager … profit organisation undergoing a major shift from legacy on-premise systems to a modern, cloud-first environment. This role is ideal for a strong IT Officer or 3rd line engineer with hands-on project experience who is ready to step up . You’ll lead technical work ...

market data to deliver timely, accurate analytics to front office users. The team works closely with portfolio managers, traders, and quantitative teams to build systems that directly inform investment decisions. This is a high-impact role suited to engineers who enjoy working on complex, data-intensive systems, combining … services in Java and Python for high-performance data processing and analytics Work with large-scale datasets across relational and analytical data platforms Design systems capable of ingesting and processing trading, market, and reference data in near real-time Partner closely with front office and risk stakeholders to translate ...

Senior Data Engineer to support a multi-system, multi-client, company-wide migration. In this role, you will work closely with owners of legacy platforms to understand their data, then design and build the queries and processes required to migrate it into a new environment. As migration work … highly collaborative individual, as you will work closely with engineers and stakeholders across multiple teams. Key Responsibilities: Collaborate with engineers across legacy systems to understand available data and its structure. Design queries and scripts to extract, transform, and migrate data into new platforms. Partner with senior data ...

Senior Data Engineer to support a multi-system, multi-client, company-wide migration. In this role, you will work closely with owners of legacy platforms to understand their data, then design and build the queries and processes required to migrate it into a new environment. As migration work … highly collaborative individual, as you will work closely with engineers and stakeholders across multiple teams. Key Responsibilities: Collaborate with engineers across legacy systems to understand available data and its structure. Design queries and scripts to extract, transform, and migrate data into new platforms. Partner with senior data ...

efficiency through a modular architecture, adaptive algorithms, predictive analytics, and a brilliant user experience. Roles and Responsibilities Lead and manage the migration of SCADA systems into ADMS platforms. Leverage your expertise to ensure smooth transitions and integration of legacy systems into new ADMS SCADA environments. Install … configure SCADA simulation systems to support testing, training, and operational simulations. Ensure accurate modelling of SCADA environments to meet system requirements. Handle the installation and configuration of Front-End Processors (FEP) and Enhanced Front-End Processors (EFEPS), ensuring seamless communication between SCADA systems and remote devices. Conduct thorough ...

major clients in Global Media, Banking, Government, Telecoms & Utilities The role Responsible for the design, development, implementation, and troubleshooting of audio and video systems and infrastructure, focusing on both Legacy and cloud-based solutions Key responsibilities Install, test, analyse, troubleshoot and modify new Audio & Video processing equipment … performance. Design and drive processes to facilitate smooth and seamless deployment of new Audio & Video processing services. Design, develop, and implement Audio & Video processing systems and solutions for broadcast and satellite communications, ensuring compliance with industry standards and regulatory requirements. Supervise the delivery of 3rd party suppliers and contractors ...

observability, ensuring data is accurate, timely, and fit-for-purpose for analytics, BI, and operational use cases.• Drive the modernization of legacy systems, leading the migration of data infrastructure to Azure with minimal disruption and long-term scalability.• Act as a technical authority on Azure-native data ...

platform. This role combines hands-on backend development, database work, operational support, and system modernisation, making it ideal for someone who enjoys understanding complex systems and improving them over time. Key Responsibilities Maintain and enhance a Java monolithic application with an Oracle PL/SQL database Pair with existing … stakeholders to improve the overall data and platform architecture Required Skills & Experience Strong experience as a backend software developer Experience working with Java-based systems Solid problem-solving and debugging skills Experience working with databases and SQL Experience with test-driven development (TDD) Experience working in Agile development environments ...

functional specifications for WRICEF objects relating to reporting, interfaces, and reconciliations. Manage data migration of GL balances, open items, and consolidation structures from legacy systems. Run at least two full mock close cycles prior to go-live, ensuring reconciliation of trial balances and intercompany eliminations. Ensure integration with ...

About the Role We are seeking an experienced Modernization Solutions Architect to join a high-impact solutions team focused on transforming legacy systems into scalable, cloud-native architectures. This role involves designing and delivering end-to-end modernization strategies across mainframe, midrange, and distributed environments for global … remediation and re-hosting legacy applications using modern frameworks and containerization. Basic Qualifications 10+ years of hands-on technical experience with mainframe systems and technologies such as COBOL, JCL, Assembler, PL/I, RPG, Rexx, CICS, DB2, IMS DB, IMS DC, VSAM, Adabas/Natural Experience ...

Copilot and emerging AI/ML solutions. Lead data platform modernisation initiatives, including optimisation of existing environments and supporting transitions from legacy systems to cloud-based solutions. Provide clear technical guidance to cross-functional teams, translating complex data and AI concepts into actionable insights for a range … stakeholders. Monitor and optimise data systems to enhance performance, reliability, accuracy and operational efficiency. Support the integration of machine learning and AI solutions, ensuring ethical governance, ongoing monitoring and responsible deployment. Lead, develop and motivate a high-performing data team, fostering an inclusive, collaborative and continuously improving culture. Profile ...

interaction with business stakeholders. This is a high-impact opportunity suited to engineers who go beyond BAU development - individuals who enjoy building and improving systems, while taking ownership of production platforms and driving meaningful change in complex environments. Key Responsibilities: Design, build, and enhance middle office systems supporting … business teams (operations, finance, client services) to understand requirements and translate them into technical solutions Contribute to reengineering and modernisation of legacy systems, improving performance, scalability, and resilience Take ownership of production systems, including: Investigating and resolving issues Improving monitoring, logging, and reliability Write clean, well ...

focused on delivering PACS implementations, integrations, and migrations within hospital and radiology settings. The successful candidate will play a key role in ensuring imaging systems are configured correctly, integrated seamlessly with hospital infrastructure, and fully operational during go-live phases. The position offers remote flexibility across the EEA, with … clinical environments Configure storage architecture, modality mappings, routing rules, and data life cycle policies Perform and validate imaging data migrations from Legacy systems Support and execute User Acceptance Testing (UAT) using structured test scripts Lead and support go-live activities, ensuring smooth transition into operational use Troubleshoot ...

Role Youll 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 youll sit at the intersection of engineering, architecture ...

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 ...

modern data platform from the ground up. Were working with a business in the middle of a high-impact data transformationmoving away from legacy constraints towards a scalable, cloud-first architecture. Theyre looking for a Principal Data Engineer to take a leading role in that journey. This isnt … skills in Python and SQL Hands-on experience with Databricks, Azure, and GCP/BigQuery Proven ability to work across both legacy systems and modern cloud environments Key Skills DevOps mindset you automate wherever possible and write clean, testable code Pragmatic approach focused on delivering value without ...

10+ systems. Experience within the loans or financial services domain. Familiarity with Oracle database integration patterns (relevant to CLASS and legacy systems). Knowledge of AWS integration services: Glue, DMS (Database Migration Service), or Step Functions ...

pain points Translate problems into data-driven workflows, working with engineers to extract and structure data from equipment and legacy systems Work with customers, from the C-Suite to operators on the line, to build bespoke applications Lead training sessions to ensure the deployed applications serve their ...

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, and researchers to build the systems and models shaping the future of global trading. 🔧 What You’ll Do 🧠 Design and enhance advanced trading systems and analytics platforms 📊 Develop and implement your own quantitative models and research ideas 🤝 Collaborate closely with top technologists, quants, and portfolio managers 🚀 Learn ...

friction and scale outcomes You Will Need A proven background in RevOps or SalesOps, ideally within scale-up environments Hands-on expertise with CRM systems (HubSpot experience highly preferred) Strong analytical, systems, and automation skills A bias for action - pragmatic, adaptable, and outcomes-led The confidence … Direct impact on growth, working closely with C-suite High-trust, high-ownership role with no legacy systems to fix A values-led mission with real social impact Central London office with a team-first, feedback-friendly culture ...

Developer to join our small but growing team in progressing the development of our bespoke software, and supporting the migration of legacy systems to the new architecture. As a key member of our team the Software Developer will play a pivotal role in shaping the platform … services that support a suite of mobile and web applications. Your responsibilities will include designing and developing robust, scalable, and secure backend systems, providing technical expertise across multiple squads as well as defining and enforcing the standards that ensure their integrity and compliance. Software Developer - Required Skills and Experience ...

working with a leading UK financial services organisation that is in the middle of a major digital transformation, modernising legacy systems and building out a new self-service digital platform for customers. As part of this journey, they're looking for an experienced Azure Cloud Engineer ...

Platform ecosystem, including RM Workbench, Middleware, and digital channels Develop and maintain APIs and event-driven integrations to enable Real Time data exchange across systems Enable seamless data flows to support client 360 views, portfolio insights, and transaction processing Contribute to core banking modernisation by decoupling product and data … layers from Legacy systems Support the implementation of a dynamic operational data layer to enable Real Time data consumption Ensure data quality, consistency, lineage, and compliance with regulatory requirements Enable end-to-end wealth journeys including onboarding, financial planning, portfolio management, and trading Support straight-through processing ...