1 to 25 of 279 Legacy Systems Jobs in London

join a well-established, cash rich business in this Director position. This is a pivotal moment in the evolution from legacy systems to a modern business, driving increased revenues and profits . This is a rare opportunity to lead a 2 year transformation of legacy ICT systems and ways of working, shaping the business into a modern, agile technology driven organisation that underpins growth, then afterwards undertake the ongoing IT Director role. You will work with the CEO and be at the centre of strategic decision-making, driving change and leading ...

join a well-established, cash rich business in this Director position. This is a pivotal moment in the evolution from legacy systems to a modern business, driving increased revenues and profits . This is a rare opportunity to lead a 2 year transformation of legacy ICT systems and ways of working, shaping the business into a modern, agile technology driven organisation that underpins growth, then afterwards undertake the ongoing IT Director role. You will work with the CEO and be at the centre of strategic decision-making, driving change and leading ...

advanced containerisation initiatives and improving the developer experience across the organisation. We’re particularly interested in engineers with deep experience modernising legacy systems, integrating CI/CD pipelines and mentoring senior technical teams. The Opportunity As Principal Engineer, you’ll lead pivotal engineering initiatives focused on making … complex Java estate fully containerisable. You’ll use your technical expertise to replatform, refactor and rebuild legacy systems, ensuring they integrate effectively with modern developer tooling and CI/CD pipelines. Alongside hands-on technical delivery, you’ll provide leadership and mentorship to senior engineers while promoting ...

Were looking for an experienced Systems Analyst to support a major Data Migration and SaaS implementation project within the financial services environment. The role will support the replacement of a legacy collections platform with a new SaaS solution, with a strong focus on data migration, systems … functional requirements. Define project scope, objectives, backlog items and refinements. Support solution design and development across internal teams and external vendors. Lead Systems Integration Testing (SIT) and support User Acceptance Testing (UAT). Support implementation, operational readiness and transition into live service. Work with external suppliers to ensure delivery ...

total software engineering experience with a track record of successfully managing, scaling, and transforming engineering teams within a fast-paced SaaS environment.* Mobile & Systems Architecture Depth: Hands-on expertise in modern mobile application development (iOS, Android, React Native, or Flutter) alongside proven experience navigating hybrid environments combining legacy systems and cloud microservices.* AI Conviction: Genuine conviction about AI in engineering—you've moved teams beyond AI as a curiosity to AI as a core capability multiplier in developer workflows and product features.* Pragmatic Debt Navigator: A track record of navigating legacy systems ...

build new solutions in support of strategic business initiatives, andinitiatives and mature our existing software and efficiently migrate and re-platform legacy systems to the cloud, using cloud native design patterns. Working closely with the enterprise architecture stream and platform engineering team to ensure alignment to organisational … assist the wider scrum team in taking accountability for theirs Work with platform engineering to automate build and deploy of existing and new systems Support the strategic goals of Capital Markets development; greenfield initiatives, replatforming and consolidating legacy systems, and adopting an automation-first approach ...

execution of the technical vision and strategy across multiple squads. Lead the design, architecture, and development of scalable, reliable, and high-performance software systems, including system design, technology selection, and overall architecture. Champion data integrity and performance, ensuring systems are designed for scalability and operational resilience. … telemetry, alerts, and logs to ensure system reliability and performance. Expertise in data architecture and modelling, with a strong understanding of legacy systems and performance optimisation techniques relevant to operational data platforms. Proven experience designing and implementing event-driven architectures (EDA) to support real-time data flows. ...

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 ...

annum for 35 hours per week. Location: Bruce Kenrick House, 2 Killick Street, London N1 9FL What you’ll do As our Finance Systems Accountant, you will be the subject-matter expert for our legacy finance systems, including SunSystems 6.4, Infor Query & Analysis 11.3, Professional Advantage … will take responsibility for keeping the SunSystems platform reliable, controlled and audit-ready throughout its remaining operational life. Working within our specialist Finance Systems Team and reporting to the Head of Finance Systems, you will partner closely with colleagues across Finance and IT. This role sits ...

craft experiences that feel intuitive, expressive, and unmistakably Spotify. This position sits at the heart of Spotify’s Content Platform, responsible for the systems that define, structure, and govern 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 lifecycle orchestration through to content quality and integrity. As Spotify’s content ecosystem continues to grow in scale and complexity across ...

will lead the delivery of business‐critical applications while supporting a major ERP transformation programme. You'll oversee the transition from legacy systems to a new ERP platform, ensuring business continuity throughout the migration. Managing a team of application specialists, you'll coordinate testing, training and data … applications such as ERP, WMS and OMS. You'll be a confident people leader with strong stakeholder management skills, a solid understanding of enterprise systems, integrations and data governance, and experience managing multiple projects simultaneously. Knowledge of Oracle Retail would be highly advantageous, as would experience supporting legacy ...

will lead the delivery of business-critical applications while supporting a major ERP transformation programme. You'll oversee the transition from legacy systems to a new ERP platform, ensuring business continuity throughout the migration. Managing a team of application specialists, you'll coordinate testing, training and data … applications such as ERP, WMS and OMS. You'll be a confident people leader with strong stakeholder management skills, a solid understanding of enterprise systems, integrations and data governance, and experience managing multiple projects simultaneously. Knowledge of Oracle Retail would be highly advantageous, as would experience supporting legacy ...

established, multi-site retail business to recruit an ERP Applications Manager, to oversee a major technology transformation, supporting the transition from legacy systems to a new ERP platform while maintaining the stability of existing business applications. The role will lead a team of Analysts and oversee … highly desirable. Bachelor's degree in IT, Computer Science, or a related field, or equivalent experience. Experience supporting and transitioning legacy systems during major technology migrations. Good knowledge of enterprise architecture, system integrations, APIs, ETL and data governance. Proven ability to lead technical teams and manage multiple ...

protect democracies and support sovereign decision‐making while addressing the ethical implications of powerful technologies. Задачи Integrate state-of-the‐art software into complex systems and challenging operational environments Define and execute end‐to‐end outcomes for delivering novel capabilities Collaborate with customer avionics engineers to understand aircraft mission … features directly to users Coordinate customers, partners, and Helsing engineers during technology demonstrations Showcase Helsing's software and AI capabilities in simulations or real systems Требования Degree in computer science, software engineering, electrical engineering, or another relevant field Broad understanding and creative use of computer systems Curiosity ...

layer serving tens of millions of customer accounts across five markets — the backbone that lets every customer sign in, stay secure, and trust the systems behind every interaction with Tesco, in-store and online. We're looking for a Product Manager to own strategy and roadmap for a core … part of that platform's data foundations: the systems that master, structure, and serve the datasets underpinning identity at scale. This is a genuinely technical product role — you'll work daily with engineering on legacy-to-modern migrations, large‐scale data system design, and the quality ...

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 ...

Lead Are you passionate about designing and deploying intelligent machine learning solutions that drive business impact? Do you enjoy leading teams, building scalable ML systems, and turning complex data into innovative products and services? About the team: We are a software engineering team responsible for developing and supporting business … Engineering, supporting production AI/ML, LLM/RAG, and agentic workflow capabilities for legal content products. In addition to writing code on complex systems, this position provides technical direction on architecture, MLOps, responsible AI, legacy system integration, AWS-based delivery, and AI-assisted development practices. ...

Systems Accountant (9-12 Month FTC) Location: Hybrid/Remote - Travel to London required every 2 weeks Salary: £65,000 - £85,000 + Benefits Contract: 9-12 Month Fixed-Term Contract An exciting opportunity has arisen for an experienced Systems Accountant to join a large listed organisation undergoinga … significant finance systems transformation programme. This role will play a key part in the implementation of a new integrated pay and bill platform, acting as the link between Finance, Operations and IT teams. This is an excellent opportunity for a finance professional with strong systems and project experience ...

settlements, inventory/position management, collateral optimization, liquidity and risk management. Architecture & Design: Own the architecture and design of enterprise applications, focusing on distributed systems, and scalable solutions that adapt to changing market conditions. Ensure adherence to technical design, application development standards, and quality processes. Project & Product Delivery: Manage … operations stakeholders, and other partner technology teams to gather requirements, manage expectations, and deliver effective solutions. Identify and mitigate potential risks related to systems, processes, and regulatory compliance. System Optimization: Identify system bottlenecks and deficiencies, devising and implementing robust solutions to enhance resiliency, performance, and scalability. Provide technical consultation ...

LinkedIn, X, Instagram, and YouTube. Job Description: This position is perfect for a seasoned C++ engineer with expertise in modeling and simulation, systems, and systems integration. As a key leader, you will tackle the most challenging and complex projects with minimal oversight, driving impactful results in collaboration with … dynamic and skilled team. This is an opportunity to shape innovative solutions, integrating simulations and third-party systems, and advancing cutting-edge technologies. What you'll do: Lead the design, development, and maintenance of high-performance C++ software for complex systems. Architect robust, scalable simulation solutions for 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.You’ll take ownership of the technology roadmap across the trading technology estate, ensuring core platforms … technology is aligned, scalable and fit for the future.You’ll 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.We’re also looking for someone ...

office (3 days) and homeworking (2 days) per week. Use your data engineering skills to help Hachette UK migrate from legacy systems to modern cloud technology. Hachette UK is a creative powerhouse and the UK's second largest book publishing group. Our mission is to make … data pipelines (Bronze/Silver/Gold architectures) in Microsoft Fabric using PySpark, Data Factory, Lakehouses, and Data Warehouses. Execute the migration of legacy stored procedures, SSIS packages, and database tables into cloud-native, Medallion-architecture solutions. Monitor cloud workloads for performance, reliability, and data quality across modern ...

direct one of the most significant digital and transformation programmes within UK Defence: the replacement of legacy military and civilian HR systems with a single, modern, integrated ERP solution.The system is the platform to deliver a ‘skills first’ Defence organisation and the programme will deliver a step … workforce efficiency, HR service improvement, and data insights.* Oversee strategy and execution for data quality, cleansing, migration and readiness across multiple legacy systems, ensuring a smooth and accurate transition to the new ERP platform.* Act as the primary interface for the programme with senior Defence leaders, Enabling ...

experience you'll bring: Familiarity with public sector regulations, compliance (e.g., GDPR, FOIA), and procurement processes.Knowledge of common public sector challenges: legacy systems, citizen engagement, case management, grants, licensing.Proficiency in Salesforce particularly Service Cloud, Experience Cloud, and Public Sector Solutions.Strong grasp of Data Cloud, MuleSoft, OmniStudio ...

workshops with customer technical teams to architect end‐to‐end solutions: integration flows, data migration strategies, workflow design Design integrations between Rocketlane and enterprise systems (NetSuite, Salesforce, Workday, SAP, HRMS, CRMs, data warehouses) Evaluate integration approaches and make build‐vs‐buy recommendations: native connectors, iPaaS platforms (Workato, Boomi), custom … execution; work with customer teams to define test scenarios, track defects, and manage go‐live readiness Manage data migration from legacy systems: validate data quality, define transformation rules, oversee cutover planning Use modern AI tools to accelerate delivery: automate documentation, generate project artifacts, build validation scripts, enhance ...