23 of 23 Legacy Systems Jobs in Hemel Hempstead

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 ❯

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 ❯

Leading the development of new features using modern DevOps and deployment practices ( Docker, AWS ECS, CI/CD ) Refactoring and optimising legacy systems for performance, scalability, and maintainability Mentoring a junior developer through code reviews, guidance, and best practices Collaborating with business stakeholders to translate needs into More ❯

DevOps Engineer – Enterprise Integration Programme £50k–£60k | Stafford | Flexible Hybrid (2–3 Days Onsite) Are you a DevOps Engineer who thrives on supporting complex systems while building automation and tools that make them better? DigX is hiring a DevOps Engineer to join our delivery team on a flagship enterprise … systems integration programme. You’ll play a hybrid role—supporting the stability of ERP and HCM platform integrations, while also contributing to the development of internal tools, automation pipelines, and lightweight applications that improve delivery and operations. This is a great opportunity for someone who enjoys technical troubleshooting, scripting … paced, collaborative environment. Your Impact as a DevOps Engineer Platform Support : Provide technical support for integration services across ERP, HCM, and legacy systems Interface Deployment : Assist in deploying and maintaining system interfaces and data pipelines Issue Resolution : Troubleshoot and resolve integration-related issues in collaboration with engineering More ❯

will join a cross-functional team delivering end-to-end, full stack solutions from design through to deployment helping to modernise legacy systems and build scalable, cloud-native applications in Azure. You'll be working on a range of client and internal projects using a well-rounded … They’re Looking For: Strong experience building applications using C# and .NET frameworks Hands-on with SQL, MVC, and WCF Familiarity with modernising legacy apps into cloud-native Azure environments Confident with DevOps practices, CI/CD pipelines, and agile delivery Solid understanding of software engineering best practices More ❯

and guiding large-scale data platform migrations. Proficiency in AWS, Azure, or GCP is required, and familiarity with SAP BW, SAP Datasphere, and legacy-to-cloud migration strategies is a significant advantage. If you thrive in a consultative environment, have a passion for architecting scalable data solutions, and … and implement CDC and delta load frameworks to enhance data integration and performance. Platform Modernization & SAP Expertise: Lead complex migrations from legacy systems to modern cloud platforms; oversee SAP BW to SAP Datasphere transitions and leverage SAP Data Analytics to maximize solution effectiveness. Governance, Security & Collaboration: Ensure … experience as a Data Solutions Consultant, Pre-Sales Data Engineer, or in a cloud data architecture role in SAP BW, AP Datasphere, and legacy-to-cloud migration strategies Hands-on experience with AWS, Azure, or GCP and familiarity with cloud-native tools such as AWS Glue, DMS, Kafka More ❯

bureaus, document management, payments) and external third-party systems. Manage the full data migration lifecycle, including data extraction, transformation, validation, and cutover from legacy systems. Collaborate closely with business units across lending, risk, compliance, and finance to ensure solution alignment with operational needs. Ensure accurate configuration of lending … in system integration using API-led and middleware architectures in banking environments. Proven success in managing complex data migration projects from legacy systems to modern core banking platforms. Solid understanding of credit policy, lending lifecycle management, and regulatory compliance (e.g., PRA, FCA, Basel). Exceptional stakeholder engagement More ❯

practices, and mentor more junior team members internally. Initial Project Responsibilities Diverse assignments spanning modern cloud and data infrastructure, from modernising legacy systems into cloud-native architectures to building and maintaining robust data platforms across multiple cloud providers. Implementation of secure data processing environments for classified information More ❯

design, server-side architecture) best practices. Key Responsibilities As our solutions architect, you will be accountable for the development, maintenance and execution of the systems architecture roadmaps. Conduct architectural reviews and propose technical solutions for ongoing digital transformation initiatives. Working closely with the logistics, business systems and development … to ensure that design options are effectively evaluated and that robust recommendations are made. Proven ability to react to issues with legacy systems and suggest innovative approaches to day-to-day challenges within the existing bounds of those platforms. Ongoing governance of project delivery against agreed designs More ❯

improvement of our enterprise-grade data platforms. You’ll play a key role in enabling business success through modern, compliant, and well-architected data systems—aligned to frameworks such as TOGAF or Zachman. Key Responsibilities Design and implement hybrid data architectures (cloud and on-prem) to support business strategy. … Lead data governance initiatives, including metadata management, data quality, and policy enforcement. Identify and address areas of technical debt within data systems, driving long-term sustainability and agility. Collaborate with cross-functional teams to define and enforce architectural and data standards. Provide architectural oversight during project delivery and ensure … Experience implementing data governance frameworks, including data stewardship and data cataloguing. A track record of identifying and removing technical debt from legacy systems and data environments. Background in regulated industries (e.g. financial services, energy, healthcare). Excellent communication skills and ability to engage with both technical and More ❯

of GDPR, consent management, and data security best practices. Practical experience with Agile methodologies. Proficient in integrating third-party APIs, internal tools, and legacy systems. Familiarity with architecture tools (e.g., Ardoq) to identify system dependencies and gaps. Strong stakeholder management and cross-functional collaboration skills. Strategic thinker with More ❯

You’ll be joining a high-impact security team at a pivotal point in the company’s growth. The environment spans legacy systems, enterprise-grade platforms, and greenfield builds – making it an ideal opportunity for individuals who thrive in varied, fast-paced environments and enjoys taking ownership More ❯

models) and delivered measurable improvements like a 10% boost in classification accuracy. • System Modernization: Proficient in optimizing workflows, reducing technical debt, and modernizing legacy systems. • Automation and Efficiency: Developed automated solutions, including CI/CD pipelines, testing frameworks, and predictive models to enhance efficiency. • Collaboration and Impact: Demonstrated … As an AI-Powered Solutions Developer, you will be at the forefront of Volaris' transformation efforts. Your role will involve modernizing legacy systems, enhancing developer efficiency, reducing technical debt, and applying AI-driven tools to optimize workflows. This is a hands-on role for someone eager to … generators. • Continuous Learner: Driven to seek out, learn, and apply new technologies. • Adaptable: Proficient in switching across technologies, toolsets, and working with both legacy and modern systems. • Project Focused: Maintains a clear focus on milestones and timelines. Key Responsibilities • Blend technical expertise with clear, impactful storytelling • Focus demos More ❯

largest Mutual Pensions company. This is a rare opportunity to help shape the future of their technology landscape as they transition from a legacy, "spaghetti" architecture to a modern, microservices-based target architecture over the coming years. About the Role As a Lead Architect, you will take full … ownership of your domain, overseeing applications, cloud infrastructure, and services. This is a brand new team, who are inheriting a legacy "spaghetti" architecture, but have been given the remit (and funding) to turn that into a modern Micro-services Architecture. These roles sit at the start of a … one We’re seeking experienced Architects with: A strong background in solutions architecture (Covering Applications, Cloud, Security etc) Demonstrated experience modernizing legacy systems into microservices-based architectures Deep knowledge of standard design patterns, cloud infrastructure, and application security Prior experience in the the Insurance Industry (Life Insurance More ❯

while shaping the next era of software delivery? Are you a seasoned software engineer who thrives on building clean, modern solutions to replace outdated systems? Do you want to utilise your traditional engineering experience while having the scope to become an expert in AI? My client is on the … pragmatic mindset and a passion for staying ahead in a fast-moving industry. You’ll be joining a small, remote-first team delivering greenfield systems for growing UK and international businesses, replacing outdated architectures with modern, scalable solutions. What You’ll Be Doing: Working end-to-end on greenfield … software projects that replace legacy systems or building end-to-end solutions for startups. Taking the lead on architecture, development, deployment, and testing - no hand-holding or rigid process silos. Applying AI tools intelligently to boost delivery speed without sacrificing quality. Engaging with clients directly to shape More ❯

and priorities, taking inputs from multiple perspectives (i.e. customers and architects) and considering operational necessities and the replacement of aging/legacy systems The ability to interact with, and influence senior industry stakeholders, with competing priorities and viewpoints, in a structured, fair and collaborative manner Senior-level More ❯

Application Specialist Idox Uniform Specialist Key Responsibilities: System Setup & Configuration Assess current system usage and identify optimisation opportunities Configure workflows and integrations with existing systems/databases Tailor the platform to reflect local authority-specific processes Conduct data audits and cleansing to ensure accuracy Migrate from any legacy systems with zero data loss Validate and test all transferred data to ensure system integrity Develop and deliver tailored training for council staff Provide clear documentation and run workshops Offer ongoing support and troubleshooting throughout the project lifecycle Application Specialist Idox Uniform Technical & Compliance Requirements: Deep knowledge More ❯

stakeholders to define solution requirements. -Provide mentorship and technical leadership to the development team. -Support integration projects and upgrades from legacy NAV systems to Business Central. -Contribute to DevOps practices and source control (e.g., Git, Azure DevOps). -Engage in technical scoping and solution design during pre … sales activities. Requirements: -Extensive experience with Dynamics 365 Business Central (and legacy NAV). -Advanced skills in AL development and extension design. -Strong architectural understanding and experience designing integrated solutions. -Familiarity with APIs, web services, and integration patterns. -Excellent problem-solving skills and a proactive, collaborative approach. -Experience More ❯

more years of experience with software architecture and design with the CXone, Genesys Cloud or Amazon Connect platform. Past titles may include Solutions Architect, Systems Architect, Technical Architect. Experience must include: Defining overall CXone, Genesys Cloud or Amazon Connect Application architectures including (but not limited to) networks, WFM, quality … needed, lead code reviews and fix issues as needed Ability to create designs that leverage legacy/on-premises solutions and CCaaS systems Ability to create customizations to work around system limitations or cost issues Experience with on premise to Cloud migration and the technical challenges and … design sessions, developing architecture and network diagrams, technical flow designs and more Additional Responsibilities: Build actionable and achievable CCaaS transformation plans including specifying legacy system changes needed or recommended. Define and build tools and libraries to augment CCaaS vendor capabilities (customizations, configurations, testing, code-reuse, etc..) Creating sales More ❯

IT team, reporting to the Head of IT Development. You will focus on designing and maintaining efficient database solutions, improving legacy Oracle systems, and supporting the future transition to Microsoft SQL Server. This role plays a key part in standardising current structures, optimising performance, and implementing best … practices. Responsibilities Design and maintain scalable database structures Write and optimise SQL queries, procedures, and functions Improve and standardise legacy Oracle environments Assist with the planned transition from Oracle to SQL Server Implement best practices for performance, documentation, and consistency More ❯

focuses on delivering high-quality 1st, second and third-line support across the Finance modules of D365 F&O (and legacy AX systems), with occasional involvement in supply chain processes. Key Responsibilities: Provide expert-level support across core Finance modules (GL, AP, AR, Fixed Assets, Bank, and More ❯

We're looking for a Junior to Mid-Level Developer with strong C# programming skills to join a small, collaborative team working on enterprise systems across a variety of industries. This role is ideal for someone with a solid foundation in C# who is eager to grow their experience … in modern web development and legacy system support You'll be involved in both maintaining existing WinForms applications and … contributing to new development using Blazor. You'll also work with SQL Server and have the opportunity to build custom interface layers for internal systems There is huge opportunity to learn & grow, working alongside talented developers in a collaborative team. They also provide Microsoft enterprise licenses so that you More ❯

cross-functional teams, managing requests and troubleshooting issues Diagnosing problems by consulting with domain experts to broaden technical understanding Maintaining and supporting a legacy system, including its outdated deployment processes Support and enhance the current system, ensuring stability and functionality Implement updates within a legacy codebase More ❯