1 to 25 of 445 Legacy Systems Jobs in the UK

Bachelor's degree in computer science, Engineering, related field, or equivalent experience. Substantial hands-on technical experience with mainframe, non-x86 legacy systems and with technologies such as COBOL, JCL, CICS, DB2 for z/OS, Assembler, PL/I, Java, Rexx, flat/sequential files, GDGs … and VSAM. Proven track record in a technical lead role migrating workloads from mainframe and non-x86 legacy systems to distributed x86 infrastructures either on-premises or on to the Cloud. Deep experience integrating mainframe and non-x86 legacy systems with distributed Linux-based … audiences AWS associate or professional level certifications (e.g., Solutions Architect Associate or Professional, DevOps Engineer Professional) preferred Experience leading customers with mainframe and legacy modernization initiatives. Experience with tools and methodologies used to migrate mainframe workloads via hardware/middleware emulation, automated code conversion, and re-platforming. Experience More ❯

Bachelor's degree in computer science, Engineering, related field, or equivalent experience. Substantial hands-on technical experience with mainframe, non-x86 legacy systems and with technologies such as COBOL, JCL, CICS, DB2 for z/OS, Assembler, PL/I, Java, Rexx, flat/sequential files, GDGs … and VSAM. Proven track record in a technical lead role migrating workloads from mainframe and non-x86 legacy systems to distributed x86 infrastructures either on-premises or on to the Cloud. Deep experience integrating mainframe and non-x86 legacy systems with distributed Linux-based … audiences. AWS associate or professional level certifications (e.g., Solutions Architect Associate or Professional, DevOps Engineer Professional) preferred. Experience leading customers with mainframe and legacy modernization initiatives. Experience with tools and methodologies used to migrate mainframe workloads via hardware/middleware emulation, automated code conversion, and re-platforming. Experience More ❯

is maintained and managed with a clear focus on data quality Update and maintain account information - working in Infor and any legacy systems to manage account data Data is maintained in line with company policies and that any changes or discrepancies are identified and updated Mitigate business … and key stakeholder communication New account set up of documents including Amber Road checks, ensuring CRM contacts are created Maintain product data within eCommerce systems and preparing item data for product registrations and any future solutions to ensure all product information is available to customers to order Update and … any changes as required to ensure continued availability of all products to market Update and maintain price books within Infor and legacy systems for all brands, including bespoke SLAs for customers To maintain Master Data within Infor (ERP) and legacy systems, to include account More ❯

is maintained and managed with a clear focus on data quality Update and maintain account information - working in Infor and any legacy systems to manage account data Data is maintained in line with company policies and that any changes or discrepancies are identified and updated Mitigate business … set up of documents including Amber Road checks, ensuring CRM contacts are created Update and maintain price books within Infor and legacy systems for all brands, including bespoke SLAs for customers To maintain Master Data within Infor (ERP) and legacy systems, to include account … bespoke documents based on customer requests Any other duties as required to support Master Data and Customer Experience team Maintain product data within eCommerce systems and preparing item data for product registrations and any future solutions to ensure all product information is available to customers to order Update and More ❯

role, you will lead the technical assurance and delivery of cybersecurity activities across a programme of work involving legacy and modern OT systems, rail-specific technologies, and industrial control components. You will work closely with engineering and operational teams to embed cybersecurity across the lifecycle, ensuring alignment … engagement, focusing on protecting operational technology (OT) and safety-critical systems. Provide hands-on technical leadership to guide the secure delivery of client-specific systems and solutions, ensuring alignment with project requirements, sector standards, and regulatory obligations. Collaborate with client engineering and programme teams to integrate cybersecurity into system … design, deployment, and ongoing operations. Define cybersecurity requirements within the client's environment, including rail-specific systems, legacy OT, and modern industrial platforms. Support developing and delivering security risk assessments, threat models, and control frameworks following the relevant standards. Contribute to the production and review of assurance More ❯

role, you will lead the technical assurance and delivery of cybersecurity activities across a programme of work involving legacy and modern OT systems, rail-specific technologies, and industrial control components. You will work closely with engineering and operational teams to embed cybersecurity across the lifecycle, ensuring alignment … sector client engagement, focusing on protecting operational technology (OT) and safety-critical systems. Define cybersecurity requirements within the client's environment, including rail-specific systems, legacy OT, and modern industrial platforms. Support developing and delivering security risk assessments, threat models, and control frameworks following the relevant standards. … Provide expertise on OT protocols, SCADA systems, field devices, and network architecture relevant to the client's operational landscape. Mentor and support other team members embedded within the client account, ensuring technical consistency and alignment to Expleo's delivery standards. Participate in knowledge sharing and capability development activities within More ❯

role, you will lead the technical assurance and delivery of cybersecurity activities across a programme of work involving legacy and modern OT systems, rail-specific technologies, and industrial control components. You will work closely with engineering and operational teams to embed cybersecurity across the lifecycle, ensuring alignment … sector client engagement, focusing on protecting operational technology (OT) and safety-critical systems. Define cybersecurity requirements within the client's environment, including rail-specific systems, legacy OT, and modern industrial platforms. Support developing and delivering security risk assessments, threat models, and control frameworks following the relevant standards. … Provide expertise on OT protocols, SCADA systems, field devices, and network architecture relevant to the client's operational landscape. Mentor and support other team members embedded within the client account, ensuring technical consistency and alignment to Expleo's delivery standards. Participate in knowledge sharing and capability development activities within More ❯

role, you will lead the technical assurance and delivery of cybersecurity activities across a programme of work involving legacy and modern OT systems, rail-specific technologies, and industrial control components. You will work closely with engineering and operational teams to embed cybersecurity across the lifecycle, ensuring alignment … sector client engagement, focusing on protecting operational technology (OT) and safety-critical systems. Define cybersecurity requirements within the client's environment, including rail-specific systems, legacy OT, and modern industrial platforms. Support developing and delivering security risk assessments, threat models, and control frameworks following the relevant standards. … Provide expertise on OT protocols, SCADA systems, field devices, and network architecture relevant to the client's operational landscape. Mentor and support other team members embedded within the client account, ensuring technical consistency and alignment to Expleo's delivery standards. Participate in knowledge sharing and capability development activities within More ❯

Oracle EBS Functional Lead - Financial Systems Delivery Manager Location: Langley, UK (2 days per week on-site) Salary: £70,000 per annum Employment Type: Permanent, part time (2 days/week) Role Summary We are seeking an experienced Oracle EBS Functional Lead to join our Financial Systems team … and take ownership of delivery management across our Financial Business Systems portfolio. This role is critical to the success of financial systems transformation, including the shift from Legacy systems to modern PaaS/SaaS solutions. The successful candidate will be responsible for day-to-day … coordinate offshore delivery teams. Collaborate with Managed Service Providers and internal IT teams to ensure seamless delivery. Oversee implementation and continuous improvement of financial systems such as Procurement, Accounts Payable, and Expense Reporting. Promote best practices, compliance, and innovation across the finance technology landscape. Ensure effective partnership between business More ❯

application used to create and manage events on the Ticketmaster website. You will play a key role in solution and architecture design for the systems your team supports. As part of the TM1 Events team, you'll be responsible for designing and developing application components and leading team projects. … quality through automated testing Collaborate with Product, UX, and internal teams to develop new features Lead the modernization and maintenance of legacy systems Automate testing, deployment, and recovery processes Inspire with innovative ideas and technical insights Foster collaboration and consensus across teams Document and train others on … and SOLID principles Understanding of frontend architecture Ability to mentor and support the growth of other engineers Experience modernizing and supporting legacy systems Proficient in monitoring and maintaining real-time production systems Familiar with databases such as Oracle, MySQL, or MongoDB Strong communication skills and experience More ❯

Role Purpose: The S/4HANA Data Migration Architect is responsible for planning, executing, and overseeing the migration of data from legacy systems to the new SAP S/4HANA ERP system. This role requires extensive experience in data migration strategies, a deep understanding of SAP S … and implement a comprehensive data migration strategy that aligns with the overall S/4HANA ERP transformation objectives. Conduct a detailed assessment of legacy data … sources to identify data quality issues, inconsistencies, and gaps. Oversee the design and development of ETL processes to extract data from legacy systems, transform it according to mapping rules, and load it into the S/4HANA system. Implement data quality assurance processes to validate data accuracy More ❯

Role Purpose: The S/4HANA Data Migration Architect is responsible for planning, executing, and overseeing the migration of data from legacy systems to the new SAP S/4HANA ERP system. This role requires extensive experience in data migration strategies, a deep understanding of SAP S … and implement a comprehensive data migration strategy that aligns with the overall S/4HANA ERP transformation objectives. Conduct a detailed assessment of legacy data … sources to identify data quality issues, inconsistencies, and gaps. Oversee the design and development of ETL processes to extract data from legacy systems, transform it according to mapping rules, and load it into the S/4HANA system. Implement data quality assurance processes to validate data accuracy More ❯

clients. This is a large-scale transformation programme that involves the full range of architectural disciplines required to successfully migrate complex legacy systems to Azure cloud infrastructure. We are looking for professionals who are comfortable working in a fast-paced, regulated environment and who have experience delivering … The Project The engagement covers a full data centre exit and cloud migration programme. It includes a combination of rehosting, replatforming and refactoring legacy applications into cloud-native Azure solutions, as well as associated infrastructure and data migration streams. We are looking for experienced: Migration Architects - skilled in … and align technology with business goals across the programme. Technical Solution Architects - to design end-to-end technical solutions and ensure seamless integration across systems and platforms. Business Domain Architects - to bridge business needs and technical delivery, providing contextual insight into legacy systems and domain-specific More ❯

Sharepoint Architect (DV Security Clearance) The Space, Defence and Intelligence business unit in CGI is a true IT Systems Integrator. We work, build, and operate bespoke, technically complex, mission-critical systems which help our clients keep us all safe and secure. We bring innovation to our clients using … to a hosted private cloud solution for a Government Client. This role will focus on designing and planning the migration of legacy systems and SharePoint services to modern cloud infrastructures, ensuring security, compliance, and seamless integration with business processes. The role is integral to the success of … Key Responsibilities: Cloud Migration Planning & Execution: Develop and implement strategies for migrating SharePoint services to Client-hosted cloud-based solutions. Assess legacy systems, identify challenges, and define best practices for a seamless migration. Ensure business continuity and minimal disruption during cloud transition. SharePoint Architecture: Lead the design More ❯

The Space, Defence and Intelligence business unit in CGI is a true IT Systems Integrator. We work, build, and operate bespoke, technically complex, mission-critical systems which help our clients keep us all safe and secure. We bring innovation to our clients using proven and emerging technologies, agile … to a hosted private cloud solution for a Government Client. This role will focus on designing and planning the migration of legacy systems and SharePoint services to modern cloud infrastructures, ensuring security, compliance, and seamless integration with business processes. br The role is integral to the success … Cloud Migration Planning & Execution: br • Develop and implement strategies for migrating SharePoint services to Client-hosted cloud-based solutions. br • Assess legacy systems, identify challenges, and define best practices for a seamless migration. br • Ensure business continuity and minimal disruption during cloud transition. br SharePoint Architecture: br More ❯

portfolio of customers, ensuring high levels of customer satisfaction and meeting utilisation targets. Your expertise in software implementation and working with legacy systems will be essential in delivering exceptional value to our clients. This consultancy role will involve working extensively with payroll systems, making prior knowledge … projects, ensuring successful deployment and integration with existing systems. Conduct assessments, develop implementation plans, and provide post-implementation support. Collaboration: Work closely with legacy providers and internal project teams to deliver cohesive and comprehensive solutions. Facilitate communication and collaboration between various stakeholders to ensure … project success. Qualifications: Proven experience in a consultancy role, preferably with a focus on payroll software implementation. Strong understanding of payroll legacy systems and the challenges associated with their integration and maintenance. Exceptional interpersonal and communication skills, with the ability to build and maintain strong client relationships. More ❯

pivotal in supporting and leading this transformation. Key Responsibilities: Cloud Adoption: Play a central role in helping the organisation move its legacy systems to the Cloud, with the goal of making solutions cloud-native. Technical Leadership: Work on modernising the company's legacy systems More ❯

Project Manager – Business Applications & Legacy Systems Worthing (Hybrid) £60,000 per annum We’re seeking a delivery-focused Project Manager with a track record of navigating complex, legacy-heavy environments. We're partnering with a long-standing organisation on the South Coast looking for an … experienced Project Manager to lead the delivery of business-critical applications, working across an intricate ecosystem of integrated legacy systems. This is a permanent role offering the chance to work at the heart of transformation – where your ability to drive change in a challenging tech landscape will truly … project delivery across business application and system implementations. Working within structured SDLC frameworks, ensuring robust planning and governance. Managing integration across legacy systems with varying levels of complexity. Collaborating with internal teams, technical leads, and third-party suppliers. Driving delivery through strong stakeholder engagement and hands-on More ❯

Project Manager - Business Applications & Legacy Systems Permanent Worthing (Hybrid) 60,000 per annum We're seeking a delivery-focused Project Manager with a track record of navigating complex, legacy-heavy environments. We're partnering with a long-standing organisation on the South Coast looking for … an experienced Project Manager to lead the delivery of business-critical applications, working across an intricate ecosystem of integrated legacy systems. This is a permanent role offering the chance to work at the heart of transformation - where your ability to drive change in a challenging tech landscape will … project delivery across business application and system implementations Working within structured SDLC frameworks, ensuring robust planning and governance Managing integration across legacy systems with varying levels of complexity Collaborating with internal teams, technical leads, and third-party suppliers Driving delivery through strong stakeholder engagement and hands-on More ❯

Project Manager - Business Applications & Legacy Systems Permanent | Worthing (Hybrid) £60,000 per annum We're seeking a delivery-focused Project Manager with a track record of navigating complex, legacy-heavy environments. We're partnering with a long-standing organisation on the South Coast looking for … an experienced Project Manager to lead the delivery of business-critical applications, working across an intricate ecosystem of integrated legacy systems. This is a permanent role offering the chance to work at the heart of transformation - where your ability to drive change in a challenging tech landscape will … project delivery across business application and system implementations Working within structured SDLC frameworks, ensuring robust planning and governance Managing integration across legacy systems with varying levels of complexity Collaborating with internal teams, technical leads, and third-party suppliers Driving delivery through strong stakeholder engagement and hands-on More ❯

leadership roughly 50:50 hands-on vs. people and project leadership. You ll define and drive the software development roadmap, modernise legacy systems, and lead the technical design and direction of new applications. You'll have a real say in shaping the future of software within the … experience that puts you firmly on that path. What You ll Be Doing Leading software engineering across a wide suite of applications, including core systems built in Java and Angular . Steering technical decision-making and innovation across the business. Helping modernise legacy systems while maintaining … so you'll need to be comfortable working with these technologies for the foreseeable future. Other technologies: C#.NET, Blazor, plus a mix of legacy systems. Large app portfolio: Key applications in Java & Angular, along with numerous other apps/technologies in the ecosystem. Strong focus on system integration More ❯

leadership roughly 50:50 hands-on vs. people and project leadership. You ll define and drive the software development roadmap, modernise legacy systems, and lead the technical design and direction of new applications. You'll have a real say in shaping the future of software within the … experience that puts you firmly on that path. What You ll Be Doing Leading software engineering across a wide suite of applications, including core systems built in Java and Angular . Steering technical decision-making and innovation across the business. Helping modernise legacy systems while maintaining … so you'll need to be comfortable working with these technologies for the foreseeable future. Other technologies: C#.NET, Blazor, plus a mix of legacy systems. Large app portfolio: Key applications in Java & Angular, along with numerous other apps/technologies in the ecosystem. Strong focus on system integration More ❯

leadership – roughly 50:50 hands-on vs. people and project leadership. You’ll define and drive the software development roadmap, modernise legacy systems, and lead the technical design and direction of new applications. You'll have a real say in shaping the future of software within the … experience that puts you firmly on that path. What You’ll Be Doing Leading software engineering across a wide suite of applications, including core systems built in Java and Angular . Steering technical decision-making and innovation across the business. Helping modernise legacy systems while maintaining … so you'll need to be comfortable working with these technologies for the foreseeable future. Other technologies: C#.NET, Blazor, plus a mix of legacy systems. Large app portfolio: Key applications in Java & Angular, along with numerous other apps/technologies in the ecosystem. Strong focus on system integration More ❯

leadership – roughly 50:50 hands-on vs. people and project leadership. You’ll define and drive the software development roadmap, modernise legacy systems, and lead the technical design and direction of new applications. You'll have a real say in shaping the future of software within the … experience that puts you firmly on that path. What You’ll Be Doing Leading software engineering across a wide suite of applications, including core systems built in Java and Angular . Steering technical decision-making and innovation across the business. Helping modernise legacy systems while maintaining … so you'll need to be comfortable working with these technologies for the foreseeable future. Other technologies: C#.NET, Blazor, plus a mix of legacy systems. Large app portfolio: Key applications in Java & Angular, along with numerous other apps/technologies in the ecosystem. Strong focus on system integration More ❯

and web applications using Angular, Swift, Objective C, Kotlin and Google Cloud. This role emphasizes front-end and mobile development , modernizing legacy systems, ensuring they meet current and future business needs. The architect will create scalable, robust solutions and foster a culture of continuous improvement and technical … architect will influence and optimize software architectures across the organization. What you will be doing: Lead the design and modernization of legacy systems to meet current and future business needs, with a strong focus on front-end and mobile development using Swift, Kotlin, Android, Dart, and React … designing enterprise-scale applications using distributed, micro services, Domain Driven Design (DDD), event-driven, and cloud native architectures. Experience in designing and modernizing legacy systems. Strong understanding of software architecture principles and patterns. Proficiency in Angular and the Ionic framework for the mobile development. Experience in designing and More ❯