1 to 25 of 415 Legacy Systems Jobs in the UK excluding London

over 20 years quietly powering some of the UK’s most complex networks -and now we’re growing fast. We’re looking for a Systems Data Architect to take ownership of how data and systems should work together across the business. You’ll reverse-engineer existing and legacy systems, establish the true current state, and design practical future-state data architecture, data flows and integrations that Development can implement. What it’s really like here The pace and intensity are higher than most environments in our sector. The workload is typically around 30% greater than ...

Data Integration Architect (SQL, Reverse Engineering, MSSQL API) Our client is seeking Data Integration Architect to take ownership of how data and systems interact across a growing and evolving organisation. This is a highly influential role that combines investigative analysis with future-state design. You'll reverse-engineer existing … legacy systems, uncover how they truly operate, and translate that understanding into scalable, practical architectures that development teams can implement. If you enjoy solving complex system challenges, making sense of undocumented processes, and designing clear, effective solutions, this role offers the opportunity to make a significant impact. ...

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 ...

currently entering a significant period of change, with a clear focus on developing and modernising its existing technology landscape, improving legacy systems, and creating more structured and effective ways of working across IT. This is an exciting opportunity for an experienced IT professional to take ownership … external suppliers, you will help ensure that day-to-day IT services remain effective while supporting the business as it develops and improves its systems and processes. Your Role and Responsibilities While in this position your duties may include but may not be limited to: Taking ownership ...

range are managed through governance controls to protect internal equity. At our client in Yeovil we are seeking an experienced Software Engineer - Mission Management Systems to drive the end-to-end development of high-integrity aircraft software during a critical technical pivot. This role focuses on the evolution … autonomous capabilities. Your impact Working within our Helicopter division, you will be taking ownership of complex mission system software component, ensuring legacy systems remain robust, while simultaneously leveraging open architectures to ensure our future uncrewed systems are modular, portable, and ready for the next generation ...

Convergence Group in Solihull is seeking a Systems Data Architect to own data and systems integration. You will reverse-engineer legacy systems, map current data flows and design practical future-state architectures that Development can implement. You will deliver clear data structures, interfaces and models ...

annum, dependant upon skills and experience as well as car allowance, bonus and benefits package Equans UK is undertaking a major workforce systems transformation, migrating HR and payroll data for approximately 2,300 employees from HR.net and MiraclePay into SAP ECC6. We are recruiting a senior Data Analyst … lead and own the end-to-end data migration lifecycle for this project: receiving data extracts from source systems, cleansing and validating them, mapping them to SAP field structures, loading into SAP, and validating the results post-load. This is a hands‐on, delivery‐focused role suited to someone ...

years of 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 and technical ...

design and delivery of scalable, secure, cloud-first integrations that power real business impact? Excited by the challenge of modernising legacy systems while driving best-practice engineering across Agile teams? As our Integration Lead Developer, youll drive the organisations integration capabilitydesigning and delivering secure, scalable solutions that … connect systems, products and partners. Youll act as the technical authority for APIs, define integration patterns, build reusable components and champion cloud-first (AWS) delivery. Working hands-on in an Agile environment, youll modernise legacy systems, support enterprise architecture evolution and collaborate across teams to enable ...

stack • Identified gaps, risks, and constraints • Target architecture aligned to business and product direction • Migration and/or retirement proposals for legacy systems Ensure transition plans are:• Realistic and incremental • Aligned with delivery priorities • Understood by engineering and product teams 5. Cross-Domain Alignment & Delivery SupportSupport effective … looking for someone who has:Required Experience• 15+ years of experience in software engineering, with significant time in architectural roles • Proven experience designing distributed systems across cloud and application layers • Strong experience with at least one major cloud platform (Azure, AWS, or GCP), ideally across multiple • Experience integrating hardware ...

largest electrical wholesalers as we reimagine our technology for the digital age. We’re modernising our legacy systems and building new platforms powered by AWS and AI — and we need creative minds to help us shape the future! We're looking for an experienced Business Analyst … play a pivotal role in one of the most significant transformation programmes in our organisation's history. As we modernise our core business systems through a large-scale ERP transformation, you'll work at the heart of the programme—partnering with business stakeholders, technology teams and delivery partners ...

purpose machinery on behalf of a global client base. Due to continued investment in their R&D department, they are looking for a Control Systems Engineer with proven Rockwell/Allen Bradley PLC programming experience to join their team at their office located just on the outskirts of Derby. … Design, develop and program Rockwell and Mitsubishi PLCs, as well as design and implement HMI's Provide technical support on legacy control systems and automation machinery Carry out FATs, SATs and on-site commissioning projects Ensure all documentation is updated regularly, particularly user manuals, BOMs and technical ...

largest electrical wholesalers as we reimagine our technology for the digital age. We’re modernising our legacy systems and building new platforms powered by AWS and AI — and we need creative minds to help us shape the future! Life as a Project Manager … understanding project status and next steps. Outstanding communication skills, capable of articulating complex processes and decisions effectively. Demonstrable project management experience delivering software, systems or technology change through coordinated cross-functional teams. Experience creating and managing integrated project plans, milestones, RAID logs, dependencies, decision logs, action trackers and status ...

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 ...

same. One day you may be eliciting requirements from stakeholders, the next analysing data for a migration decision, mapping legacy systems, or producing technical documentation for integrations. Whatremainsconstant is your commitment to quality, rigour, and outputs that teams can confidently build upon. You will workwithin an engineering … information to support programme decisions, deliveryplanningand prioritisation. Create andmaintainhigh-quality documentation, such as system descriptions, integration specifications, datadictionariesand process flows. Review legacy systems to understand current capabilities, dependencies and opportunities for simplification or decommissioning. Support development and integration workstreams by helping define system requirements, integrationdesignsand API-related ...

Title: Systems Engineer Location: Plymouth - Hybrid 2+ days per week on-site Role Type: Permanent Salary: £50,000 - £57,000 depending on experience Our client, an established engineering consultancy, require an experienced Systems Engineer to join their multi-disciplined team based in Plymouth. ** Please note we can only … consider sole UK Nationals due to security clearance restrictions ** The Systems Engineer will work together with the customer contributing to requirements management and problem understanding, supporting facilities engineering and major infrastructure projects. What the role of the Systems Engineer entails: Some of the main duties of the Systems ...

risk Communicate effectively across organisational, technical and political boundaries, making complex technical information accessible for non-technical audiences Design how to expose data from systems (APIs, real-time streams), link data from multiple systems, and deliver modern data services Ensure that risks associated with deployment are adequately understood … data solutions from requirements through implementation, including technical documentation and architecture blueprints Lead complex data migration projects from legacy systems to modern cloud-native platforms Evaluate and recommend appropriate technologies across the modern data stack to meet specific client needs Mentor junior team members and collaborate with ...

risk Communicate effectively across organisational, technical and political boundaries, making complex technical information accessible for non-technical audiences Design how to expose data from systems (APIs, real-time streams), link data from multiple systems, and deliver modern data services Ensure that risks associated with deployment are adequately understood … data solutions from requirements through implementation, including technical documentation and architecture blueprints Lead complex data migration projects from legacy systems to modern cloud-native platforms Evaluate and recommend appropriate technologies across the modern data stack to meet specific client needs Mentor junior team members and collaborate with ...

Engineering LeadAre 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. ...

Reference: BH-69615-3 An excellent opportunity to lead, design, and shape a complex enterprise systems environment. You will spearhead a strategic, multi-year transformation to consolidate legacy ERP systems into a unified IFS Cloud platform, while establishing and owning the future enterprise architecture strategy. … governance, and continuous roadmap evolution to maximise future system value. Define and maintain the future-state enterprise architecture, ensuring all core business applications and systems align with long-term business strategy. Oversee integration architecture, data flows, and system connectivity to ensure a clean, simplified application landscape during and after ...

what we do — powering reliable, scalable communications for thousands of businesses. Behind the scenes, our engineering teams design, build, and maintain the software systems that generate real business impact. We combine the agility of a start-up mindset with the stability of a leading European business. Collaboration, ownership … work — and we’re always looking for people who want to build meaningful technology at scale. Who are we looking for? The Systems Development Manageris responsible forleading the development and ongoing evolution ofGamma’stelecom support systems that underpin voice network operations and engineering, including troubleshooting, diagnostics, reporting ...

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 ...

responsible for identifying, designing, developing and implementing technology solutions that support the organisation's strategic objectives. This role combines software development, solution architecture, systems integration and technology innovation. The postholder will lead the design and delivery of business applications, databases, record management systems, automation solutions and cloud‐based … whilst maintaining awareness of emerging technologies and industry best practice. The Technology Solutions Lead will play a key role in modernising legacy systems and delivering future‐state digital platforms across the Microsoft ecosystem, including Azure, Microsoft 365, SharePoint, Teams, Fabric, Purview and AI‐enabled technologies. The role ...

days per week onsite in Warminster, Wiltshire, and five years’ UK residency for SC clearance. What You’ll Be Responsible For: Deploy and configure systems on MODCloud/D2S/OpenShift Manage Kubernetes environments, networking and connectivity, as well as security-aligned configurations. Build and maintain CI/… pipelines, GitOps workflows, and environment configurations to ensure repeatable and reliable deployments. Support running systems by monitoring health, diagnosing platform and infrastructure issues and resolving deployment failures. Work closely with integration engineers, customers and modelling engineers. Support and maintain existing simulation and training systems, as well as existing ...

business continues to integrate newly acquired companies, it is looking to appoint an experienced Data Migration Lead to take ownership of finance systems data migration across the group. This is a highly influential role where you will lead the end-to-end migration of financial data from multiple legacy systems into a standardised finance platform. You will be responsible for ensuring that data is accurately extracted, cleansed, transformed, mapped, validated and loaded, while maintaining financial integrity throughout each acquisition integration. Key Responsibilities · Lead the end-to-end finance data migration strategy for acquired businesses. ...