76 to 100 of 106 Legacy Systems Jobs in the South East

The platform acts as a “man in the middle” solution, empowering users with flexible scheduling , cached package delivery , and a consistent, user-friendly experience - solving the challenges of legacy System Center deployments and clunky update processes. With rich telemetry, direct user engagement, and a modern interface, WSM is redefining how enterprise device management should feel. 💼 The Role This More ❯

1️⃣ Senior Manager – Insurance Architect | London | Up to £115k + Package | Hybrid Insurance firms are under pressure to modernise — legacy systems, regulatory change, and shifting customer expectations mean transformation needs both strategic vision and technical precision . That’s where this Senior Manager-level role comes in. You’ll join a leading consulting practice, helping major insurers More ❯

1️⃣ Senior Manager – Insurance Architect | London | Up to £115k + Package | Hybrid Insurance firms are under pressure to modernise — legacy systems, regulatory change, and shifting customer expectations mean transformation needs both strategic vision and technical precision . That’s where this Senior Manager-level role comes in. You’ll join a leading consulting practice, helping major insurers More ❯

1️⃣ Senior Manager – Insurance Architect | London | Up to £115k + Package | Hybrid Insurance firms are under pressure to modernise — legacy systems, regulatory change, and shifting customer expectations mean transformation needs both strategic vision and technical precision . That’s where this Senior Manager-level role comes in. You’ll join a leading consulting practice, helping major insurers More ❯

flexibility What you’ll be doing: Design, implement and optimise cloud and on-prem infrastructure solutions Support major Azure transformation and automation initiatives Assess and modernise legacy systems to ensure scalability and performance Collaborate with global teams to maintain security, compliance, and resilience Act as an escalation point for operations and deliver infrastructure best practices What you More ❯

. Responsibilities: Design robust integration solutions across commercial, HR, and data platforms within a complex, multi-brand retail environment Lead architectural planning for the decommissioning of legacy systems, ensuring smooth transitions to modern, scalable services Define and document integration standards, including API strategies, event schemas, and interface contracts to enable decoupled, reusable services Implement event-driven architectures … in enterprise system integration, including legacy system transformation and platform modernisation Hands-on experience with integration technologies, including Kafka (or similar event streaming platforms), Java-based backend systems, and service orchestration Strong proficiency in API design (REST/GraphQL), microservices architecture, and middleware solution Deep understanding of data flow, interface management, and end-to-end process mapping More ❯

experience delivering complex IT transformation programmes in large, global organisations. Strong track record of mainframe modernisation , ideally involving BlueAge or similar technologies – very desirable. Experience migrating legacy systems to public cloud environments – desirable. Demonstrated ability to manage multi-vendor delivery models and complex stakeholder landscapes. Experience in the reinsurance or insurance sector , ideally with exposure to broking More ❯

experience delivering complex IT transformation programmes in large, global organisations. Strong track record of mainframe modernisation , ideally involving BlueAge or similar technologies – very desirable. Experience migrating legacy systems to public cloud environments – desirable. Demonstrated ability to manage multi-vendor delivery models and complex stakeholder landscapes. Experience in the reinsurance or insurance sector , ideally with exposure to broking More ❯

experience delivering complex IT transformation programmes in large, global organisations. Strong track record of mainframe modernisation , ideally involving BlueAge or similar technologies – very desirable. Experience migrating legacy systems to public cloud environments – desirable. Demonstrated ability to manage multi-vendor delivery models and complex stakeholder landscapes. Experience in the reinsurance or insurance sector , ideally with exposure to broking More ❯

for a major digital transformation programme. This role ensures readiness across business and technical teams, manages governance and stakeholder alignment, and oversees the successful transition from legacy systems to new services. Key Responsibilities Cutover Preparation Drive the development and sign-off of the Cutover Strategy and Cutover Design. Ensure ECC (Enterprise Command Centre) setup is completed and More ❯

for a major digital transformation programme. This role ensures readiness across business and technical teams, manages governance and stakeholder alignment, and oversees the successful transition from legacy systems to new services. Key Responsibilities Cutover Preparation Drive the development and sign-off of the Cutover Strategy and Cutover Design. Ensure ECC (Enterprise Command Centre) setup is completed and More ❯

for a major digital transformation programme. This role ensures readiness across business and technical teams, manages governance and stakeholder alignment, and oversees the successful transition from legacy systems to new services. Key Responsibilities Cutover Preparation Drive the development and sign-off of the Cutover Strategy and Cutover Design. Ensure ECC (Enterprise Command Centre) setup is completed and More ❯

key to the success of our pre-enablement work with VMO2. You will make sure that our operations run smoothly and on time. The HFC network is a legacy system. It can face issues such as blockages, congestion, and missing connections. These problems need to be found and fixed quickly. Our goal is to keep the process simple More ❯

security, and resilience of a mission-critical network spanning over 200 sites — including stations, depots, offices, and data centres. As the business completes its transition from legacy systems to a modern Fortinet SD-WAN infrastructure, this position offers the chance to shape the future of connectivity across the network. You’ll work closely with the Head of More ❯

reliability, and commitment to shaping a more sustainable future through advanced technology and customer-focused solutions. Description Lead the European rollout of Marketing Cloud CRM, replacing legacy systems and enabling cross-market campaign orchestration. Design a shared CRM framework with core journeys for consistency and campaign-level flexibility for local relevance. Drive sales impact through CRM improving More ❯

core banking transformations, including SAP S/4HANA Core Banking and Transactional Banking (TRBK) migrations, platform consolidation, and post-merger integration strategies. Expertise in both legacy core systems and modern composable architectures, with a focus on SAP’s modular, service-oriented architecture. Proven ability to define and execute target-state architectures and migration roadmaps for banks transitioning More ❯

to cloud migration projects and shape new technology transformation workstreams. The Role Lead cloud modernisation projects (on-premise to public cloud) End-to-end life cycle management and legacy system transformation Navigate government commercial frameworks and procurement Work on new initiatives from inception with team of 5 Essential Skills Cloud modernisation experience (AWS/Azure) - disqualifying if absent … Legacy technology transformation (VMware, Hyper-V, Oracle) Government sector experience (almost essential) Agile delivery and digital service modernisation Strategic thinking with technical depth The Details Rate: £675/day inside IR35 Duration: 6 months Location: London/Bristol/Manchester (any location, flexible working) Clearance: BPSS minimum, SC preferable More ❯

adaptable Lead Engineer, with experience working across the Javascript and PHP stack to help lead the team and deliver new features to our AtlasNXT platform while supporting our legacy systems. You'll work across a variety of projects, contributing to the stability, scalability, and reliability of our products. Key Responsibilities Leading the planning and delivery of roadmap features … a technical leadership role Strong expertise in , React/React Native, and PHP across backend, frontend, and mobile development Proven ability to design and scale service-oriented, event-driven systems Experience with CI/CD pipelines, automated testing, and infrastructure as code (e.g. Terraform) Hands-on knowledge of containerisation (Docker, Kubernetes) and cloud platforms (AWS, GCP or Azure) Skilled … in cross-functional collaboration and stakeholder communication Strong analytical skills with a proactive, problem-solving mindset Desirable Experience in high-availability systems, cybersecurity frameworks (ISO, SOC), or Elixir development Background in fast-paced, start-up or scale-up environments Interest in stepping into or growing towards an Engineering Manager role Benefits This role is perfect for someone who thrives More ❯

regulated environments. Key Responsibilities: Define and lead enterprise API strategy and architecture Drive API adoption and governance across teams Ensure secure, scalable integration with legacy and cloud systems Maintain compliance with financial regulations Monitor and optimise API performance and developer experience Experience Required: Proven leadership in large-scale API programmes Expertise in REST, OAuth2, OpenAPI, and API More ❯

Type: Permanent/Client-Facing Role About the Role Entasis Partners is supporting a leading consultancy to secure an experienced Enterprise Architect to drive technology and platform strategy, legacy system modernisation, and M&A integration initiatives. This is a high-impact, client-facing role where you’ll partner with senior stakeholders to define technology roadmaps, rationalise complex IT … technology and platform strategies to support business transformation objectives. Lead legacy system modernisation, including cloud migration, platform consolidation, and process optimisation. Drive M&A integration initiatives, aligning systems, data, and processes across organisations. Advise on enterprise architecture frameworks and best practices to ensure scalable, secure, and future-ready IT landscapes. Mentor and guide cross-functional teams, fostering … senior stakeholders. What We’re Looking For from the Lead Enterprise Architect Proven experience as an Enterprise Architect focused on technology and platform strategy. Hands-on experience with legacy system modernisation, cloud platforms (Azure, AWS, GCP), and IT transformation programmes. Experience leading or supporting M&A integration projects, including system consolidation and rationalisation. Strong stakeholder management and influencing More ❯

Type: Permanent/Client-Facing Role About the Role Entasis Partners is supporting a leading consultancy to secure an experienced Enterprise Architect to drive technology and platform strategy, legacy system modernisation, and M&A integration initiatives. This is a high-impact, client-facing role where you’ll partner with senior stakeholders to define technology roadmaps, rationalise complex IT … technology and platform strategies to support business transformation objectives. Lead legacy system modernisation, including cloud migration, platform consolidation, and process optimisation. Drive M&A integration initiatives, aligning systems, data, and processes across organisations. Advise on enterprise architecture frameworks and best practices to ensure scalable, secure, and future-ready IT landscapes. Mentor and guide cross-functional teams, fostering … senior stakeholders. What We’re Looking For from the Lead Enterprise Architect Proven experience as an Enterprise Architect focused on technology and platform strategy. Hands-on experience with legacy system modernisation, cloud platforms (Azure, AWS, GCP), and IT transformation programmes. Experience leading or supporting M&A integration projects, including system consolidation and rationalisation. Strong stakeholder management and influencing More ❯

Type: Permanent/Client-Facing Role About the Role Entasis Partners is supporting a leading consultancy to secure an experienced Enterprise Architect to drive technology and platform strategy, legacy system modernisation, and M&A integration initiatives. This is a high-impact, client-facing role where you’ll partner with senior stakeholders to define technology roadmaps, rationalise complex IT … technology and platform strategies to support business transformation objectives. Lead legacy system modernisation, including cloud migration, platform consolidation, and process optimisation. Drive M&A integration initiatives, aligning systems, data, and processes across organisations. Advise on enterprise architecture frameworks and best practices to ensure scalable, secure, and future-ready IT landscapes. Mentor and guide cross-functional teams, fostering … senior stakeholders. What We’re Looking For from the Lead Enterprise Architect Proven experience as an Enterprise Architect focused on technology and platform strategy. Hands-on experience with legacy system modernisation, cloud platforms (Azure, AWS, GCP), and IT transformation programmes. Experience leading or supporting M&A integration projects, including system consolidation and rationalisation. Strong stakeholder management and influencing More ❯

specialise in transforming client ideas into real-world products and platforms that unlock new value streams and enable technology-driven growth. Their Application Services division helps clients modernise legacy applications, reduce technical debt, and establish continuous innovation pathways leading to genuine business transformation. Within their Applications Engineering practice, they enable clients to escape outdated application estates and harness … instrumental in winning major opportunities. Your primary focus will be scoping, defining, designing and proposing technical solutions for: Application modernisation (particularly migrating from Java architectures to modern platforms) Legacy system transformation (including Oracle modernisation initiatives) Cloud-native application development Digital experience products Complex multi-service application opportunities A key differentiator in this role is leading AI-enabled capabilities … bid cycles over £5m value) Strong software development and architecture background with 3-5 years hands-on backend engineering experience (Java, C#, etc.) Application modernisation expertise - particularly transforming legacy 3-tier architectures to modern platforms Cloud-native and modern SDLC practices understanding across multiple technology stacks AI solutions delivery experience within SDLC contexts (minimum 2 implementations) Exceptional communication More ❯

lead a new cloud modernisation programme within the government sector. This is a strategic leadership role where you'll shape the approach to transforming legacy on-premise systems to modern public cloud infrastructure. What You'll Be Doing Leading the strategy and execution of on-premise to cloud migration programmes Shaping new technology modernisation work-streams from … end technology transformation life-cycles Navigating government commercial frameworks and procurement processes Understanding and managing dependencies across operational support and outsourcing Applying modern practices (DevOps, SecOps, Agile) to legacy system modernisation Essential Experience Technical Proven experience leading cloud modernisation projects (on-premise to public cloud) Strong understanding of public cloud platforms (AWS, Azure) Experience with legacy More ❯

Technology is at the heart of this fast-growing digital bank — powering the systems that make business banking simpler, faster and smarter. This role is about setting the technical direction across payments, shaping scalable systems, and helping engineering teams deliver consistently high-quality software. What You’ll Be Doing: Define and implement technical standards that span multiple teams … Experience working with micro frontends or Nx, and partnering closely with design teams. What’s in It for You: Work in a modern, agile engineering environment free from legacy systems. Real influence on technical direction, architecture and standards. Supportive, collaborative culture built around ownership and transparency. Opportunity to mentor, innovate and shape how a growing engineering function operates. More ❯