1 to 25 of 167 Legacy Systems Jobs in the UK excluding London

Business Systems Analyst Location: Pontefract, West Yorkshire Salary: Up to £60,000 per annum Job Type: Permanent, Full-Time This role is onsite (with some flexibility around hybrid working) About the Role Renzo Talent are recruiting on behalf of a well-established organisation based in Pontefract. We are seeking … Business Systems Analyst to support the modernisation of their business applications and processes. This role will play a key part in replacing two legacy systems and contributing to the discovery, design, and implementation of a new Enterprise Resource Planning (ERP) system. The successful candidate will work ...

your family. A great holiday package About the role As a Software Development Engineer, you’ll help design, build and support resilient back-office systems that power sales, stock control and financial accuracy across our Booker estate. You’ll work across a mixed technology landscape—combining legacy systems with modern platforms—to deliver reliable, scalable solutions for high-volume wholesale operations. This is a 12-month fixed-term opportunity where you’ll play a key role in maintaining system performance, delivering change safely, and supporting business-critical services. You’ll collaborate closely with colleagues ...

your family. A great holiday package About the role As a Software Development Engineer, you’ll help design, build and support resilient back-office systems that power sales, stock control and financial accuracy across our Booker estate. You’ll work across a mixed technology landscape—combining legacy systems with modern platforms—to deliver reliable, scalable solutions for high-volume wholesale operations. This is a 12-month fixed-term opportunity where you’ll play a key role in maintaining system performance, delivering change safely, and supporting business-critical services. You’ll collaborate closely with colleagues ...

efficient data ecosystem, playing a key part in bridging Data, IT Security, and Business Strategy. Youll lead the move away from legacy systems, embedding a modern lakehouse approach and ensuring our data operations are production-ready, governed, and built to scale. You will: Design and implement … lineage, and cataloguing tools Solid understanding of IT security principles (IAM, network controls, secure architecture) Experience leading large-scale migrations from legacy systems to cloud platforms The ability to translate complex technical challenges into clear, business-focused insights A passion for raising engineering standards and mentoring others ...

regulated environment. Key Responsibilities Define and deliver a clear software platform strategy and roadmap across custom applications, APIs, low-code, and legacy systems Lead high-quality, predictable delivery of software changes across internal teams, citizen developers, and third-party suppliers Own and prioritise the development backlog, balancing … enable safe, scalable use Oversee responsible adoption of AI-enabled capabilities Ensure architectural integrity, security, and compliance across all solutions Manage legacy systems, including modernisation and decommissioning plans Maintain reliable, resilient platform operations Lead and develop high-performing engineering teams and partners Control and optimise platform ...

regulated environment. Key Responsibilities Define and deliver a clear software platform strategy and roadmap across custom applications, APIs, low-code, and legacy systems Lead high-quality, predictable delivery of software changes across internal teams, citizen developers, and third-party suppliers Own and prioritise the development backlog, balancing … enable safe, scalable use Oversee responsible adoption of AI-enabled capabilities Ensure architectural integrity, security, and compliance across all solutions Manage legacy systems, including modernisation and decommissioning plans Maintain reliable, resilient platform operations Lead and develop high-performing engineering teams and partners Control and optimise platform ...

regulated environment. Key Responsibilities Define and deliver a clear software platform strategy and roadmap across custom applications, APIs, low-code, and legacy systems Lead high-quality, predictable delivery of software changes across internal teams, citizen developers, and third-party suppliers Own and prioritise the development backlog, balancing … enable safe, scalable use Oversee responsible adoption of AI-enabled capabilities Ensure architectural integrity, security, and compliance across all solutions Manage legacy systems, including modernisation and decommissioning plans Maintain reliable, resilient platform operations Lead and develop high-performing engineering teams and partners Control and optimise platform ...

Systems Architect 2 Year FTC Scunthorpe, North Lincolnshire Hybrid Working - 3 days in, 2 from home Up to £65,000 + excellent benefits including pension + 27 days holiday + bank holidays + life assurance + health cash plan + ongoing training and development Are you an experienced infrastructure … evolving technical environment? This is a hands-off Solution Architect position focused on defining and aligning technology solutions across infrastructure, networks, security, enterprise systems, and operational technology. You will work closely with internal teams and third-party suppliers to produce clear, structured designs ready for delivery. You will play ...

Description IT Systems Architect 2 Year FTC Scunthorpe, North Lincolnshire Hybrid Working - 3 days in, 2 from home Up to £65,000 + excellent benefits including pension + 27 days holiday + bank holidays + life assurance + health cash plan + ongoing training and developmentAre you an experienced … evolving technical environment This is a hands-off Solution Architect position focused on defining and aligning technology solutions across infrastructure, networks, security, enterprise systems, and operational technology. You will work closely with internal teams and third-party suppliers to produce clear, structured designs ready for delivery.You will play ...

Spring Boot, AWS Serverless (Lambda/Node.js) and Ruby on Rails with React Define integration patterns between modern services and Legacy Mainframe systems, supporting incremental modernisation Remain hands-on with code: contributing to critical paths, conducting code reviews, and pairing with engineers Own the technical roadmap … ends, or comparable full-stack experience and the ability to lead teams using these tools Strong grasp of integration patterns with Legacy systems (Mainframe, ESB, message-based, batch) and incremental modernisation strategies Solid understanding of secure-by-design principles, OWASP risks, and engineering for high-assurance environments ...

Spring Boot, AWS Serverless (Lambda/Node.js) and Ruby on Rails with React Define integration patterns between modern services and Legacy Mainframe systems, supporting incremental modernisation Remain hands-on with code: contributing to critical paths, conducting code reviews, and pairing with engineers Own the technical roadmap … ends, or comparable full-stack experience and the ability to lead teams using these tools Strong grasp of integration patterns with Legacy systems (Mainframe, ESB, message-based, batch) and incremental modernisation strategies Solid understanding of secure-by-design principles, OWASP risks, and engineering for high-assurance environments ...

play a pivotal role. This is a high-impact position where you'll lead the end-to-end migration from legacy billing systems to a modern, scalable platform , while owning the digital billing experience across customer channels. You'll sit at the intersection of product, technology … billing migration strategy and execution Own the migration roadmap, including dependencies, risks, and key milestones Oversee transition from legacy systems with minimal/no customer disruption Ensure pricing integrity, service continuity, and regulatory compliance throughout Proactively resolve product, billing, and integration challenges Digital Product Ownership Own billing ...

data architecture. You will be responsible for helping shape Logical and Canonical Data Models (LDM/CDM), supporting the migration of legacy systems into a modern, scalable data environment and building high performance integration solutions across multiple business systems. The role is responsible for ensuring the optimal … ROLE AND RESPONSIBILITIES Collaborate with the Data Architect to design and deploy LDMs and CDMs, facilitating the decoupling of legacy core systems from modern SaaS endpoints Design, deploy, and monitor event-driven integration patterns using Azure Logic Apps, Functions, and Service Bus to manage transactional data ...

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 ...

includes: Oversight of infrastructure, networks, cloud services, and business-critical applications, ensuring secure and reliable operations. Support for both legacy and modern systems, including ERP, CRM, Sage, Microsoft 365, and specialist software. Management and liaison with external providers, contractors, and internal teams to deliver IT solutions, support … user provisioning, group policies, account decommissioning, and organisational structure management. Configure and manage VLANs, switches, routers, firewalls, and wireless networks. Administer and support telephony systems, including Avaya onsite PBX, VoIP services, and phone recording/information requests. Provide support for audio-visual equipment, conferencing systems, and meeting room ...

includes: Oversight of infrastructure, networks, cloud services, and business-critical applications, ensuring secure and reliable operations. Support for both legacy and modern systems, including ERP, CRM, Sage, Microsoft 365, and specialist software. Management and liaison with external providers, contractors, and internal teams to deliver IT solutions, support … user provisioning, group policies, account decommissioning, and organisational structure management. Configure and manage VLANs, switches, routers, firewalls, and wireless networks. Administer and support telephony systems, including Avaya onsite PBX, VoIP services, and phone recording/information requests. Provide support for audio-visual equipment, conferencing systems, and meeting room ...

Keynes Completion of the Data Model and source-to-target mapping. Expert in SAP Successfactord Defining what data exists in the legacy systems versus what will be held within SuccessFactors. Data transformation and automation. Template preparation and validation. Data extraction and reconciliation. Mock 2 execution and defect … Production Load planning and execution. Data cleansing activities. Identification of data that will not be migrated to SuccessFactors. Archive and retention strategy for legacy data. Legacy system decommissioning planning. Post-load reconciliation and business sign-off. Please apply ASAP to save disappointment If you receive suspicious ...

countries. This role will play a critical part in improving the quality, consistency, and reliability of HR data across Workday, legacy HR systems, finance platforms, and local country data sources. A key focus of this role will be leading HR master data reconciliation, root cause analysis … data structures, reporting, and HR master data management. HR Data Quality & Reconciliation - Extensive experience analysing HR master data across Workday, legacy HR systems, finance systems, and country-level sources to identify mismatches, duplicates, and inconsistencies. Root Cause Analysis - Proven ability to investigate recurring data issues ...

ownership of the technical foundations of our data platform – from ingestion and infrastructure to deployment – helping us move from legacy, on-premise systems to a modern, cloud-first data architecture. Working closely with the BI & Data Lead and an Analytics Engineer, you’ll be the primary architect … turning fragmented legacy data into a competitive, AI-ready asset. If you enjoy building things from the ground up, modernising complex systems, and shaping how data is used across a business, this role offers real ownership and influence. The Role - Data Engineer Designing a greenfield data platform ...

ownership of the technical foundations of our data platform – from ingestion and infrastructure to deployment – helping us move from legacy, on-premise systems to a modern, cloud-first data architecture. Working closely with the BI & Data Lead and an Analytics Engineer, you’ll be the primary architect … turning fragmented legacy data into a competitive, AI-ready asset. If you enjoy building things from the ground up, modernising complex systems, and shaping how data is used across a business, this role offers real ownership and influence. The Role - Data Engineer Designing a greenfield data platform ...

role Our client is looking to appoint a QA Analyst who can take real ownership of quality across a suite of business-critical systems, with a particular emphasis on performance, scalability, and system resilience as the organisation evolves its technology landscape. This role will sit at the centre … scale within an increasingly modern, Azure-led environment. It will suit someone who is comfortable working across both legacy and cloud-based systems, and who can bring structure, rigour, and measurable performance standards to how quality is defined and delivered. From day one, you'll be embedded ...

role Our client is looking to appoint a QA Analyst who can take real ownership of quality across a suite of business-critical systems, with a particular emphasis on performance, scalability, and system resilience as the organisation evolves its technology landscape. This role will sit at the centre … scale within an increasingly modern, Azure-led environment. It will suit someone who is comfortable working across both legacy and cloud-based systems, and who can bring structure, rigour, and measurable performance standards to how quality is defined and delivered. From day one, you'll be embedded ...

suite of high-impact initiatives, including the full implementation of MyPulse, a new Time & Attendance solution, and the decommissioning of legacy systems across a multi-site manufacturing environment. Your work will define how our people experience HR for years to come. This is your opportunity to lead … implementations and reporting. Desirable Experience CIPD Level 7 Hands-on experience implementing MyPulse (Compensation & HCM modules). Experience decommissioning legacy T&A systems, including data migration. Familiarity with deploying new clocking systems across multi-site manufacturing environments. The Impact You'll Make This role places ...

modules. This role will provide dedicated programme management leadership across the technical delivery of the programme, helping to replace a manual and intensive HR systems offering with an integrated, secure and scalable Oracle-based solution. A key focus of the role will be maintaining delivery momentum in a complex … Programme Manager will help ensure the programme delivers the intended operational, financial and strategic benefits, while supporting a smooth transition from legacy systems to the new Oracle HCM environment. This role will require the following experience: Successful experience of delivering Oracle HCM system implementations, ideally within ...

Developer Location: Cheltenham (Hybrid) Salary: £65k As a Senior Developer, you will play a key role in supporting, maintaining, and evolving our core business systems and integrations. Working within the Business Systems team, you will deliver reliable, scalable solutions that support day-to-day operations, improve user experience … enable business growth. This is a hands-on, varied role combining development, database optimisation, and systems integration. You will collaborate closely with stakeholders across the business, contributing to both new initiatives and continuous improvement of existing platforms. Your responsibilities as a Senior Developer will be: Develop, maintain, and enhance ...