1 to 25 of 282 Permanent Legacy Systems Jobs in the Thames Valley

skills and make positive impact? We are looking for an experienced IT professional to join during the transition of legacy case management systems to modern, cloud-based solutions. Your role will focus on maintaining and supporting on prem legacy systems during ongoing transformation to … cloud-based (AWS) software as a service (SaaS). Your role would be in 60% focussing on supporting Applications/systems that sit on SQL, and 40% would be general Infrastructure support. Therefore we are looking for all-arounder, with good SQL knowledge. What You Will Do Provide expert … support and maintenance for legacy case management systems (Extranet, CMS, DTS, EKS2, and ADMS) in collaboration with the IT teams. Ensure the legacy systems continue to run smoothly during the transition to cloud-based solutions. Collaborate with cross-functional teams to ensure effective service More ❯

skills and make positive impact? We are looking for an experienced IT professional to join during the transition of legacy case management systems to modern, cloud-based solutions. Your role will focus on maintaining and supporting on prem legacy systems during ongoing transformation to … cloud-based (AWS) software as a service (SaaS). Your role would be in 60% focussing on supporting Applications/systems that sit on SQL, and 40% would be general Infrastructure support. Therefore we are looking for all-arounder, with good SQL knowledge. What You Will Do Provide expert … support and maintenance for legacy case management systems (Extranet, CMS, DTS, EKS2, and ADMS) in collaboration with the IT teams. Ensure the legacy systems continue to run smoothly during the transition to cloud-based solutions. Collaborate with cross-functional teams to ensure effective service More ❯

Senior Full Stack C# .NET DeveloperFully Remote (UK Residents Only) About WebX Systems At WebX, we specialise in technical publishing and content management solutions for the aerospace and defence sectors worldwide. Our flagship products— UltraCSDB®, UltraAuthorTM, UltraXMLTM , and UltraPortalTM —are used globally and combine proven legacy systems … Stack .NET Developer to help evolve our product suite. You’ll work across both legacy Windows desktop applications and modern web-based systems and help lead the transition toward cloud-native architecture. This role is perfect for someone who enjoys innovating within established environments while also driving … quality. What We Offer Salary : £70,000 – £85,000 depending on experience Technical Growth – Work across a diverse technology landscape, from legacy systems to cutting-edge cloud-native tools. Autonomy – Freedom to shape technical decisions and make a significant impact on product direction and architecture. Career Advancement More ❯

Senior Full Stack C# .NET DeveloperFully Remote (UK Residents Only) About WebX Systems At WebX, we specialise in technical publishing and content management solutions for the aerospace and defence sectors worldwide. Our flagship products— UltraCSDB®, UltraAuthorTM, UltraXMLTM , and UltraPortalTM —are used globally and combine proven legacy systems … Stack .NET Developer to help evolve our product suite. You’ll work across both legacy Windows desktop applications and modern web-based systems and help lead the transition toward cloud-native architecture. This role is perfect for someone who enjoys innovating within established environments while also driving … quality. What We Offer Salary : £70,000 – £85,000 depending on experience Technical Growth – Work across a diverse technology landscape, from legacy systems to cutting-edge cloud-native tools. Autonomy – Freedom to shape technical decisions and make a significant impact on product direction and architecture. Career Advancement More ❯

Senior Full Stack C# .NET DeveloperFully Remote (UK Residents Only) About WebX Systems At WebX, we specialise in technical publishing and content management solutions for the aerospace and defence sectors worldwide. Our flagship products— UltraCSDB®, UltraAuthorTM, UltraXMLTM , and UltraPortalTM —are used globally and combine proven legacy systems … Stack .NET Developer to help evolve our product suite. You’ll work across both legacy Windows desktop applications and modern web-based systems and help lead the transition toward cloud-native architecture. This role is perfect for someone who enjoys innovating within established environments while also driving … quality. What We Offer Salary : £70,000 – £85,000 depending on experience Technical Growth – Work across a diverse technology landscape, from legacy systems to cutting-edge cloud-native tools. Autonomy – Freedom to shape technical decisions and make a significant impact on product direction and architecture. Career Advancement More ❯

Senior Full Stack C# .NET DeveloperFully Remote (UK Residents Only) About WebX Systems At WebX, we specialise in technical publishing and content management solutions for the aerospace and defence sectors worldwide. Our flagship products— UltraCSDB®, UltraAuthorTM, UltraXMLTM , and UltraPortalTM —are used globally and combine proven legacy systems … Stack .NET Developer to help evolve our product suite. You’ll work across both legacy Windows desktop applications and modern web-based systems and help lead the transition toward cloud-native architecture. This role is perfect for someone who enjoys innovating within established environments while also driving … quality. What We Offer Salary : £70,000 – £85,000 depending on experience Technical Growth – Work across a diverse technology landscape, from legacy systems to cutting-edge cloud-native tools. Autonomy – Freedom to shape technical decisions and make a significant impact on product direction and architecture. Career Advancement More ❯

Senior Full Stack C# .NET DeveloperFully Remote (UK Residents Only) About WebX Systems At WebX, we specialise in technical publishing and content management solutions for the aerospace and defence sectors worldwide. Our flagship products— UltraCSDB®, UltraAuthorTM, UltraXMLTM , and UltraPortalTM —are used globally and combine proven legacy systems … Stack .NET Developer to help evolve our product suite. You’ll work across both legacy Windows desktop applications and modern web-based systems and help lead the transition toward cloud-native architecture. This role is perfect for someone who enjoys innovating within established environments while also driving … quality. What We Offer Salary : £70,000 – £85,000 depending on experience Technical Growth – Work across a diverse technology landscape, from legacy systems to cutting-edge cloud-native tools. Autonomy – Freedom to shape technical decisions and make a significant impact on product direction and architecture. Career Advancement More ❯

About the Role: As Technical Lead you will play a central role in designing and delivering enterprise-grade solutions, managing both legacy systems and the strategic migration to Azure-based cloud platforms. You’ll lead by example, guiding a cross-functional team through complex technical decisions, ensuring … delivery standards, and alignment with the wider enterprise architecture. This role offers the opportunity to contribute to large-scale modernisation while maintaining essential business systems used across global markets. Key Responsibilities: Lead the technical design and decision-making for all team deliverables, ensuring architectural alignment and long-term maintainability. … technical delivery of features, with a focus on quality, scalability, and performance. Work closely with architects to contribute to the ongoing evolution of enterprise systems, balancing innovation with operational stability. Provide technical leadership, mentoring developers and fostering a high-performing Agile team culture. Collaborate with DevOps and platform engineering More ❯

We are seeking an experienced Project Manager to lead the end-to-end implementation of Microsoft Dynamics 365, overseeing the transition from a legacy platform to a modern, scalable CRM/ERP solution. This role is critical in enabling operational efficiency and enhancing user experience across the organisation. … project lifecycle of the D365 implementation, from initial planning through to delivery and post-go-live support. Manage the transition from legacy systems to Microsoft Dynamics 365 with minimal disruption to business operations. Define project scope, objectives, deliverables, and success metrics in collaboration with key stakeholders. Develop … or Finance & Operations implementations. Strong understanding of the D365 platform and common integration and data migration challenges. Experience managing transitions from legacy systems to Microsoft cloud solutions. Excellent stakeholder management and communication skills across technical and non-technical audiences. Experience working in Agile, Waterfall, or hybrid delivery More ❯

you'll take technical ownership of a critical business domain — Pensions, Protection, or Closed Book. You’ll guide the transition from legacy systems to a modern, cloud-native, microservices architecture, with a specific focus on solutions that serve the Pensions business unit. This role blends hands-on … secure, user-focused platforms. Key Responsibilities Own the solutions architecture for your domain (applications, cloud infrastructure, integration, and security) Guide the modernisation of legacy platforms into a decoupled, event-driven microservices estate Define and implement architecture patterns, development standards, and observability practices Act as the go-to technical … looking for experienced Senior Architects with: Proven experience in solutions architecture with the Insurance Industry A strong track record of modernising legacy systems into scalable, microservices-based platforms Deep knowledge of design patterns, cloud-native practices, and architectural governance Excellent communication skills with both technical and non More ❯

you'll take technical ownership of a critical business domain — Pensions, Protection, or Closed Book. You’ll guide the transition from legacy systems to a modern, cloud-native, microservices architecture, with a specific focus on solutions that serve the Pensions business unit. This role blends hands-on … secure, user-focused platforms. Key Responsibilities Own the solutions architecture for your domain (applications, cloud infrastructure, integration, and security) Guide the modernisation of legacy platforms into a decoupled, event-driven microservices estate Define and implement architecture patterns, development standards, and observability practices Act as the go-to technical … looking for experienced Senior Architects with: Proven experience in solutions architecture with the Insurance Industry A strong track record of modernising legacy systems into scalable, microservices-based platforms Deep knowledge of design patterns, cloud-native practices, and architectural governance Excellent communication skills with both technical and non More ❯

you'll take technical ownership of a critical business domain — Pensions, Protection, or Closed Book. You’ll guide the transition from legacy systems to a modern, cloud-native, microservices architecture, with a specific focus on solutions that serve the Pensions business unit. This role blends hands-on … secure, user-focused platforms. Key Responsibilities Own the solutions architecture for your domain (applications, cloud infrastructure, integration, and security) Guide the modernisation of legacy platforms into a decoupled, event-driven microservices estate Define and implement architecture patterns, development standards, and observability practices Act as the go-to technical … looking for experienced Senior Architects with: Proven experience in solutions architecture with the Insurance Industry A strong track record of modernising legacy systems into scalable, microservices-based platforms Deep knowledge of design patterns, cloud-native practices, and architectural governance Excellent communication skills with both technical and non More ❯

you'll take technical ownership of a critical business domain — Pensions, Protection, or Closed Book. You’ll guide the transition from legacy systems to a modern, cloud-native, microservices architecture, with a specific focus on solutions that serve the Pensions business unit. This role blends hands-on … secure, user-focused platforms. Key Responsibilities Own the solutions architecture for your domain (applications, cloud infrastructure, integration, and security) Guide the modernisation of legacy platforms into a decoupled, event-driven microservices estate Define and implement architecture patterns, development standards, and observability practices Act as the go-to technical … looking for experienced Senior Architects with: Proven experience in solutions architecture with the Insurance Industry A strong track record of modernising legacy systems into scalable, microservices-based platforms Deep knowledge of design patterns, cloud-native practices, and architectural governance Excellent communication skills with both technical and non More ❯

you'll take technical ownership of a critical business domain — Pensions, Protection, or Closed Book. You’ll guide the transition from legacy systems to a modern, cloud-native, microservices architecture, with a specific focus on solutions that serve the Pensions business unit. This role blends hands-on … secure, user-focused platforms. Key Responsibilities Own the solutions architecture for your domain (applications, cloud infrastructure, integration, and security) Guide the modernisation of legacy platforms into a decoupled, event-driven microservices estate Define and implement architecture patterns, development standards, and observability practices Act as the go-to technical … looking for experienced Senior Architects with: Proven experience in solutions architecture with the Insurance Industry A strong track record of modernising legacy systems into scalable, microservices-based platforms Deep knowledge of design patterns, cloud-native practices, and architectural governance Excellent communication skills with both technical and non More ❯

Summary Job Reference: VR230525 Job Title: Digital Systems Manager Salary: 40-41k pa Location: Lisburn, hybrid Contract: Temporary, full-time (36.25 hours pw, typically Mon-Fri/9-5) Overview VANRATH now stands as the first-tier supplier to a range of Top 100 Northern Ireland organisations, SMEs … Public Sector organisations, Health and Social Care Trusts and NFP Organisations. One of these clients is looking for a Digital Systems Manager to oversee the upgrades of legacy systems, while maintaining existing services. This is a long-term temporary position, but the desire is to make … times and hybrid working once you're up to speed. Best suited to those with experience of managing projects, managing enterprise/organisation wide systems, maintaining them, migrating to new systems, managing overall system licences etc. This isn't a system engineer or analyst role as it won More ❯

Summary Job Reference: VR230525 Job Title: Digital Systems Manager Salary: 40-41k pa Location: Lisburn, hybrid Contract: Temporary, full-time (36.25 hours pw, typically Mon-Fri/9-5) Overview VANRATH now stands as the first-tier supplier to a range of Top 100 Northern Ireland organisations, SMEs … Public Sector organisations, Health and Social Care Trusts and NFP Organisations. One of these clients is looking for a Digital Systems Manager to oversee the upgrades of legacy systems, while maintaining existing services. This is a long-term temporary position, but the desire is to make … times and hybrid working once you're up to speed. Best suited to those with experience of managing projects, managing enterprise/organisation wide systems, maintaining them, migrating to new systems, managing overall system licences etc. This isn't a system engineer or analyst role as it won More ❯

Summary Job Reference: VR230525 Job Title: Digital Systems Manager Salary: 40-41k pa Location: Lisburn, hybrid Contract: Temporary, full-time (36.25 hours pw, typically Mon-Fri/9-5) Overview VANRATH now stands as the first-tier supplier to a range of Top 100 Northern Ireland organisations, SMEs … Public Sector organisations, Health and Social Care Trusts and NFP Organisations. One of these clients is looking for a Digital Systems Manager to oversee the upgrades of legacy systems, while maintaining existing services. This is a long-term temporary position, but the desire is to make … times and hybrid working once you're up to speed. Best suited to those with experience of managing projects, managing enterprise/organisation wide systems, maintaining them, migrating to new systems, managing overall system licences etc. This isn't a system engineer or analyst role as it won More ❯

Summary Job Reference: VR230525 Job Title: Digital Systems Manager Salary: 40-41k pa Location: Lisburn, hybrid Contract: Temporary, full-time (36.25 hours pw, typically Mon-Fri/9-5) Overview VANRATH now stands as the first-tier supplier to a range of Top 100 Northern Ireland organisations, SMEs … Public Sector organisations, Health and Social Care Trusts and NFP Organisations. One of these clients is looking for a Digital Systems Manager to oversee the upgrades of legacy systems, while maintaining existing services. This is a long-term temporary position, but the desire is to make … times and hybrid working once you're up to speed. Best suited to those with experience of managing projects, managing enterprise/organisation wide systems, maintaining them, migrating to new systems, managing overall system licences etc. This isn't a system engineer or analyst role as it won More ❯

Summary Job Reference: VR230525 Job Title: Digital Systems Manager Salary: 40-41k pa Location: Lisburn, hybrid Contract: Temporary, full-time (36.25 hours pw, typically Mon-Fri/9-5) Overview VANRATH now stands as the first-tier supplier to a range of Top 100 Northern Ireland organisations, SMEs … Public Sector organisations, Health and Social Care Trusts and NFP Organisations. One of these clients is looking for a Digital Systems Manager to oversee the upgrades of legacy systems, while maintaining existing services. This is a long-term temporary position, but the desire is to make … times and hybrid working once you're up to speed. Best suited to those with experience of managing projects, managing enterprise/organisation wide systems, maintaining them, migrating to new systems, managing overall system licences etc. This isn't a system engineer or analyst role as it won More ❯

Microsoft/Azure data tools. You'll play a key role in standardising and migrating data from a diverse range of legacy systems into a centralised Dynamics 365 CE environment. You’ll lead the full data migration lifecycle and work closely with technical and functional stakeholders to … execute ETL (Extract, Transform, Load) processes into Dynamics 365 CE modules (e.g., Sales, Customer Service, Field Service). Work with legacy CRM systems, spreadsheets, databases, and proprietary platforms to extract data. Map and transform data into Dynamics 365 CE entities such as Accounts, Contacts, Leads, Cases, and More ❯

monitoring of all master data migration activities Work in close collaboration with the SI partner to deliver a seamless transition from legacy systems to the new Oracle Fusion platform Develop and implement robust data integration strategies to support efficient and secure interoperability with other internal and external … systems Drive data validation, reconciliation and quality control across all core master data domains (e.g. suppliers, customers, chart of accounts) Functional & Technical Support on Oracle Fusion Financials: Provide functional input across key Oracle modules (P2P, R2R, O2C) Support cutover, RBAC security, data reconciliation, and business testing Produce validation and … large-scale ERP programmes In-depth knowledge of Oracle Fusion Financials Cloud Extensive experience of data migration and integration from legacy finance systems Hands-on expertise with Oracle Strong stakeholder engagement and project communication skills Experience working alongside SI partners and managing cross-functional delivery Public sector More ❯

monitoring of all master data migration activities Work in close collaboration with the SI partner to deliver a seamless transition from legacy systems to the new Oracle Fusion platform Develop and implement robust data integration strategies to support efficient and secure interoperability with other internal and external … systems Drive data validation, reconciliation and quality control across all core master data domains (e.g. suppliers, customers, chart of accounts) Functional & Technical Support on Oracle Fusion Financials: Provide functional input across key Oracle modules (P2P, R2R, O2C) Support cutover, RBAC security, data reconciliation, and business testing Produce validation and … large-scale ERP programmes In-depth knowledge of Oracle Fusion Financials Cloud Extensive experience of data migration and integration from legacy finance systems Hands-on expertise with Oracle Strong stakeholder engagement and project communication skills Experience working alongside SI partners and managing cross-functional delivery Public sector More ❯

monitoring of all master data migration activities Work in close collaboration with the SI partner to deliver a seamless transition from legacy systems to the new Oracle Fusion platform Develop and implement robust data integration strategies to support efficient and secure interoperability with other internal and external … systems Drive data validation, reconciliation and quality control across all core master data domains (e.g. suppliers, customers, chart of accounts) Functional & Technical Support on Oracle Fusion Financials: Provide functional input across key Oracle modules (P2P, R2R, O2C) Support cutover, RBAC security, data reconciliation, and business testing Produce validation and … large-scale ERP programmes In-depth knowledge of Oracle Fusion Financials Cloud Extensive experience of data migration and integration from legacy finance systems Hands-on expertise with Oracle Strong stakeholder engagement and project communication skills Experience working alongside SI partners and managing cross-functional delivery Public sector More ❯

monitoring of all master data migration activities Work in close collaboration with the SI partner to deliver a seamless transition from legacy systems to the new Oracle Fusion platform Develop and implement robust data integration strategies to support efficient and secure interoperability with other internal and external … systems Drive data validation, reconciliation and quality control across all core master data domains (e.g. suppliers, customers, chart of accounts) Functional & Technical Support on Oracle Fusion Financials: Provide functional input across key Oracle modules (P2P, R2R, O2C) Support cutover, RBAC security, data reconciliation, and business testing Produce validation and … large-scale ERP programmes In-depth knowledge of Oracle Fusion Financials Cloud Extensive experience of data migration and integration from legacy finance systems Hands-on expertise with Oracle Strong stakeholder engagement and project communication skills Experience working alongside SI partners and managing cross-functional delivery Public sector More ❯

monitoring of all master data migration activities Work in close collaboration with the SI partner to deliver a seamless transition from legacy systems to the new Oracle Fusion platform Develop and implement robust data integration strategies to support efficient and secure interoperability with other internal and external … systems Drive data validation, reconciliation and quality control across all core master data domains (e.g. suppliers, customers, chart of accounts) Functional & Technical Support on Oracle Fusion Financials: Provide functional input across key Oracle modules (P2P, R2R, O2C) Support cutover, RBAC security, data reconciliation, and business testing Produce validation and … large-scale ERP programmes In-depth knowledge of Oracle Fusion Financials Cloud Extensive experience of data migration and integration from legacy finance systems Hands-on expertise with Oracle Strong stakeholder engagement and project communication skills Experience working alongside SI partners and managing cross-functional delivery Public sector More ❯