76 to 100 of 657 Legacy Systems Jobs in the UK

will be asked to shape epics and tickets yourself - always aligned with the CTO's direction Build new features, fix problems in old systems and keep everything running fast and reliable Work on a mix of greenfield projects and legacy systems - both matter and both need … your skills without arrogance Confident resilient pragmatic and results-driven Clear judgement and able to balance speed with quality Experienced in building new systems and fixing legacy Keeps calm under pressure and still delivers Raises the bar for those around them by example Working Style Execute ...

Senior Backend Engineer who simplifies, ships, and owns their work. Someone who is equally comfortable navigating new platforms and legacy systems within an organisation. From a technology perspective, we are looking for someone who has experience with: .NET/C # at a senior level. Real command … language and the runtime. Domain modelling/DDD experience. You know how to slice complex systems into the right boundaries, reducing complexity and increasing maintainability and business collaboration. Event sourcing, CQRS, and event streaming in production. Akka.NET, EventStore, Marten, Kafka, or similar. You understand event-sourced systems beyond ...

Fleet Management builds the automation layer for Meta's data center fleet. We own the systems that plan, orchestrate, and execute the operational workflows that keep hundreds of thousands of machines healthy, available, and efficient across every region, and increasingly across public cloud providers as well. Our platforms cover … agentic workflows, backed by the observability and quality signals needed to trust them. Practically, this means we build large-scale workflow orchestration engines: systems that model operational intent, schedule it against fleet constraints, execute it across dozens of downstream systems, and decide what to do when steps fail. ...

resilient, and aligned with business objectives. Success in this role requires an individual who is comfortable operating in ambiguity, influencing senior stakeholders, challenging legacy approaches, and driving measurable business outcomes through technology and process innovation. What You'll Be Accountable ForProduct Strategy & OwnershipDefine and own the vision, roadmap … have a track record of successfully driving change in complex organisations and bringing stakeholders on the journey. Evidence might include: Replacing legacy systems or processes. Managing organisational change and adoption. Delivering technology-enabled transformation programmes. Communication & InfluenceYou are confident engaging with senior executives, operational teams, and technical ...

maintaining code using Terraform and Ansible . CI/CD and OS Management: Proven track record with Unix/Linux/Windows operating systems in development or support roles, strong scripting abilities, and hands-on experience implementing/maintaining pipelines in GitLab CI . Agile and Delivery: Demonstrable experience … utilizing Scrum or Kanban frameworks with continuous integration and continuous deployment (CI/CD) practices. Cloud Migration: Demonstrated background in migrating legacy systems and applications into modern cloud environments. Technical Stack Cloud: AWS (EC2, ECS) Infrastructure as Code (IaC): Terraform Configuration Management: Ansible CI/CD: GitLab ...

maintaining code using Terraform and Ansible . CI/CD and OS Management: Proven track record with Unix/Linux/Windows operating systems in development or support roles, strong scripting abilities, and hands-on experience implementing/maintaining pipelines in GitLab CI . Agile and Delivery: Demonstrable experience … utilizing Scrum or Kanban frameworks with continuous integration and continuous deployment (CI/CD) practices. Cloud Migration: Demonstrated background in migrating legacy systems and applications into modern cloud environments. Technical Stack Cloud: AWS (EC2, ECS) Infrastructure as Code (IaC): Terraform Configuration Management: Ansible CI/CD: GitLab ...

role is key to supporting the design, build, and validation of data migration pipelines, enabling the successful transition of data from legacy systems to modern cloud platforms. You will contribute to ensuring data quality, integrity, and performance, particularly through structured testing and validation activities. You will work … implement migration solutionsAssist in planning and executing data migration tasks and deliverables Data Migration Engineering Build and maintain data migration pipelines from legacy data warehouses to AWS-based platformsDevelop ETL/ELT pipelines using: AWS GluePython/PySparkSQLYAML configurationsSupport execution of bulk data migrations and incremental/delta ...

data quality issues. Define and document KPIs, metrics, business definitions, calculation logic, rules, assumptions, and data requirements . Investigate discrepancies between legacy systems, datasets, and reports, working with technical teams to identify root causes and agree appropriate resolutions. Translate business and analytical needs into clear business requirements ...

Business Analyst/Technical SME (MRI Repairs Migration) Business Analyst | Technical BA | Systems Migration | MRI Repairs SME | UAT & Data Migration Job Title: Technical Business Analyst/System Migration SME Location: Knowsley, Liverpool (Hybrid: 2–3 days on-site per week + travel to go-live contract sites) Contract Length … project team in Knowsley, Liverpool . The team is currently executing an in-flight, multi-stream migration project transitioning legacy housing maintenance systems over to the new MRI Repairs works management platform. This is an initial 3 to 6 month contract to cover a key vacancy, with ...

delivery Continuous improvement of payment performance, integration coverage, and customer experience Qualifications Bachelor’s degree or equivalent practical experience Strong grounding in analytical thinking, systems design, or technical disciplines Formal product management training is beneficial but not required 5+ years total experience in product management or closely related roles … Experience designing and shipping products for corporate customers and B2B users — finance, treasury, payroll, AP/AR, and operations teams Working knowledge of payroll systems, ERPs, and finance system integrations (e.g. NetSuite, SAP, Oracle, banking and treasury aggregators) Comfortable navigating enterprise buying, security review, change management, and rollout ...

agile sprints. Your software becomes the reference implementation for scalable GenAI in the enterprise. You codify patterns, shape internal tooling, and accelerate innovation—delivering systems that are battle-tested in production and scalable across industries. Who You Are: You are a systems-minded, AI-native engineer who ships … deeply with customer teams, diagnose root problems, and architect AI-powered workflows that run at scale. You don't just debug code—you debug systems, context, and customer pain points. You will: Build solution-ready LLM-enabled applications that span backend logic, data orchestration, and front-end UI Operate ...

drive significant advancements in our business operations and technology landscape. Our primary goal is to transition from our current reliance on legacy systems and specialized off-the-shelf tools to a more integrated, AI-driven, and data-centric operational model. Leveraging insights and guidance from our other … then build genuinely useful things on top of it. This is a two-sided role. On one side, you'll integrate: wiring third-party systems, internal apps and document storage into the environment we already have, setting sensible guardrails around access and cost, and adopting existing Group capability wherever ...

Technical Data Analyst is responsible for maintaining investment data for clients. This role involves tasks such as analyzing and organizing raw data, building data systems and pipelines, conducting complex data analysis, and presenting information through data visualization techniques. Additionally, the analyst collaborates with clients and project management teams … quality and reliability. Responsibilities Utilize your analytical expertise to decipher and organize raw data, transforming it into valuable insights. Build efficient and robust data systems and pipelines, ensuring seamless data flow. Dive into complex data sets, conducting thorough analysis and delivering insightful reports on outcomes. Showcase your findings using ...

modern CI/CD deployment practices. Deep understanding of data modeling, metadata management, and data lineage. Desirable Experience Experience migrating legacy systems into Azure or Microsoft Fabric . Prior background in Financial Services working on Governance, Risk, and Compliance (GRC) systems. Familiarity with data governance frameworks ...

Residential Mortgages and Commercial Lending value streams. We are looking for a hands-on,accountable leader who has walked the walk, delivered complex systems in production, and can walk into anExCo or Board room and inspire total confidence. You will lead multidisciplinary teams-spanning Delivery Managers, Architects, Software Engineers … andSDETs - balancing execution of our immediate business roadmap with a major strategic evolution: migratingour core lending engine off legacy systems onto a modern, cloud-native architecture (Thought Machine) overthe next 24 months. Our delivery model is shifting. As we execute our core architecture migration, our software ...

drive significant advancements in our business operations and technology landscape. Our primary goal is to transition from our current reliance on legacy systems and specialized off-the-shelf tools to a more integrated, AI-driven, and data-centric operational model. Leveraging insights and guidance from our other … then build genuinely useful things on top of it. This is a two-sided role. On one side, you'll integrate: wiring third-party systems, internal apps and document storage into the environment we already have, setting sensible guardrails around access and cost, and adopting existing Group capability wherever ...

shaping greenfield and brownfield development initiatives, driving the shift to a modern DevOps culture, supporting major cloud migrations, and transforming legacy systems to meet future business needs. As a key member of the senior leadership team, the Software Engineering Manager will also mentor teams through change … champion DevOps culture across teams in transition. Manage both greenfield cloud-native projects and existing legacy platform enhancements. Guide the migration of systems and services into Microsoft Azure using modern design principles. Support architectural decisions around microservices, scalability, and maintainability. Act as a technical mentor to engineers ...

Software Engineer - Cumberland/FICCO Front Office Systems Software Engineer - Cumberland/FICCO Front Office Systems Job Location Greenwich Employment type Regular Department Technology Targeted Start Date Immediate DRW is a diversified trading firm with over 3 decades of experience bringing sophisticated technology and exceptional people together … place of high expectations, integrity, innovation and a willingness to challenge consensus. About the Team DRW C/FICCO Front Office Systems team intimately collaborates with traders to turn alpha signals, risk management, market visualizations and other trading-critical tools into scalable, performant and reliable production systems. We embed ...

very important for this position. Must be an excellent problem solver and adept writing documentation for all projects. You ideally have worked on banking systems particularly Core Banking. Responsible for the development and delivery of new systems to automate and streamline processes required by different departments. To support … internal IT department with changes and upgrades to software platforms. To be primary contact for all technical questions relating to in-house bespoke systems and interfacing. Analysis of issues pertaining to problems or errors raised by in-house systems, i.e. CORE, SharePoint interface, Equation, Kondor, Eximbills ...

responsible for the quality, integrity and reliability of the client reporting and investment data delivered to clients. This role involves designing and overseeing data systems and pipelines, leading complex data analysis, and presenting insights through advanced data visualisation techniques. The SME collaborates with clients, project management and architecture teams … matter expert for investment data, providing authoritative guidance on data structures, sourcing, transformation logic and reporting outputs. Design, build and optimise efficient, scalable data systems and pipelines, ensuring seamless data flow at volume. Lead deep-dive analysis of complex data sets and root cause investigations, delivering clear recommendations ...

Developer - Cloud Platform & AI We're recruiting for a Senior Software Developer to join a small, highly capable technology team delivering a major legacy-to-cloud transformation. The business is moving its core booking platform to an Azure and modern .NET solution, while also building an AI-powered … Blazor experience. Strong Azure experience, including App Service or Container Apps, Azure SQL, API Management and Azure DevOps pipelines. Experience modernising legacy systems, ideally using strangler-fig or similar incremental migration approaches. Good understanding of REST API design, microservices and event-driven architecture patterns. Practical ...

agile sprints. Your software becomes the reference implementation for scalable GenAI in the enterprise. You codify patterns, shape internal tooling, and accelerate innovation—delivering systems that are battle-tested in production and scalable across industries. You will: Build solution-ready LLM-enabled applications that span backend logic, data orchestration … sprints Engineer with versatility: APIs, orchestration pipelines, vector DBs, LLM frameworks, UI components Operate with agility: integrate with legacy systems, navigate ambiguity, ship safely at speed Codify patterns: build scaffolds, SDKs, and documentation to scale success across customers Influence platform: inform product strategy through field-tested insights ...

infrastructures, while meeting regulatory requirements. With more than 52,000 employees serving over 4,500 clients across 54 countries, Atos helps modernize core IT systems, accelerate cloud and data transformation, strengthen cybersecurity, and deliver secure digital workplace environments to support its clients, its employees and society. Atos also provides … complex ETL/ELT data integration solutions. Strong experience working with XML, XSD schema validation, XPath, and XSLT transformations. Experience integrating legacy systems, third-party platforms, and SaaS applications using XML and API-based interfaces. Experience designing data ingestion frameworks for structured, semi-structured, and XML-based ...

orders, supplier invoices, cards for subscriptions and be part of Business Spend as we scale procurement to pay services. If you're excited about systems with real history and are passionate about building services that handle what a company spends to run itself, then this is the opportunity … working with and reporting to You’ll report to our Engineering Manager in Business Spend and work closely with teams in accounting systems and card infrastructure. Our team of 10 is highly collaborative and dedicated to invoices and vendors. You’ll also have the chance to partner with teams ...

services. It helps enterprise companies undergoing business transformation address technical challenges and achieve positive business outcomes. Задачи: Re-engineer core trading and post-trade systems into event-driven, cloud-native services on the JVM using Java and Kotlin; Modernize legacy components while maintaining the stability … live, financially significant platform; Build new data and market-expansion platforms, alongside plumbing for cross-margining and credit financing; Design event-driven systems for failure handling, ordering guarantees, replay semantics, and data integrity under market pressure; Practice TDD and shift-left testing, use local containerized dependencies, and own quality ...