51 to 75 of 1,448 Legacy Systems Jobs in the UK

Social network you want to login/join with: Senior Full Stack C# .NET Developer, bath col-narrow-left Client: WebX Systems Ltd. Location: bath, United Kingdom Job Category: Other - EU work permit required: Yes col-narrow-right Job Views: 9 Posted: 06.06.2025 Expiry Date: 21.07.2025 col-wide Job Description: 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, UltraAuthor, UltraXML , and UltraPortal —are used globally and combine proven legacy systems with cutting-edge, cloud-native innovations. As a privately owned UK business, we take pride in delivering exceptional … a proactive, experienced Senior Full 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 forward new development. Technology Stack More ❯

Social network you want to login/join with: Senior Full Stack C# .NET Developer, brighton col-narrow-left Client: WebX Systems Ltd. Location: brighton, United Kingdom Job Category: Other - EU work permit required: Yes col-narrow-right Job Views: 4 Posted: 31.05.2025 Expiry Date: 15.07.2025 col-wide Job Description: 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, UltraAuthor, UltraXML , and UltraPortal —are used globally and combine proven legacy systems with cutting-edge, cloud-native innovations. As a privately owned UK business, we take pride in delivering exceptional … a proactive, experienced Senior Full 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 forward new development. Technology Stack More ❯

Social network you want to login/join with: Senior Full Stack C# .NET Developer, reading col-narrow-left Client: WebX Systems Ltd. Location: reading, United Kingdom Job Category: Other - EU work permit required: Yes col-narrow-right Job Views: 4 Posted: 31.05.2025 Expiry Date: 15.07.2025 col-wide Job Description: 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, UltraAuthor, UltraXML , and UltraPortal —are used globally and combine proven legacy systems with cutting-edge, cloud-native innovations. As a privately owned UK business, we take pride in delivering exceptional … a proactive, experienced Senior Full 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 forward new development. Technology Stack More ❯

Social network you want to login/join with: Senior Full Stack C# .NET Developer, southampton col-narrow-left Client: WebX Systems Ltd. Location: southampton, United Kingdom Job Category: Other - EU work permit required: Yes col-narrow-right Job Views: 4 Posted: 31.05.2025 Expiry Date: 15.07.2025 col-wide Job Description: 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, UltraAuthor, UltraXML , and UltraPortal —are used globally and combine proven legacy systems with cutting-edge, cloud-native innovations. As a privately owned UK business, we take pride in delivering exceptional … a proactive, experienced Senior Full 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 forward new development. Technology Stack More ❯

Social network you want to login/join with: Senior Full Stack C# .NET Developer, slough col-narrow-left Client: WebX Systems Ltd. Location: slough, United Kingdom Job Category: Other - EU work permit required: Yes col-narrow-right Job Views: 4 Posted: 31.05.2025 Expiry Date: 15.07.2025 col-wide Job Description: 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, UltraAuthor, UltraXML , and UltraPortal —are used globally and combine proven legacy systems with cutting-edge, cloud-native innovations. As a privately owned UK business, we take pride in delivering exceptional … a proactive, experienced Senior Full 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 forward new development. Technology Stack More ❯

Social network you want to login/join with: Senior Full Stack C# .NET Developer, glasgow col-narrow-left Client: WebX Systems Ltd. Location: glasgow, United Kingdom Job Category: Other - EU work permit required: Yes col-narrow-right Job Views: 4 Posted: 31.05.2025 Expiry Date: 15.07.2025 col-wide Job Description: 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, UltraAuthor, UltraXML , and UltraPortal —are used globally and combine proven legacy systems with cutting-edge, cloud-native innovations. As a privately owned UK business, we take pride in delivering exceptional … a proactive, experienced Senior Full 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 forward new development. Technology Stack More ❯

Social network you want to login/join with: col-narrow-left Client: WebX Systems Ltd. Location: Job Category: Other - EU work permit required: Yes col-narrow-right Job Views: 4 Posted: 31.05.2025 Expiry Date: 15.07.2025 col-wide Job Description: Senior Full Stack C# .NET DeveloperFully Remote (UK Residents Only) About WebX Systems At WebX, we specialise in … publishing and content management solutions for the aerospace and defence sectors worldwide. Our flagship products— UltraCSDB, UltraAuthor, UltraXML , and UltraPortal —are used globally and combine proven legacy systems with cutting-edge, cloud-native innovations. As a privately owned UK business, we take pride in delivering exceptional software and highly responsive support. Joining our close-knit team means … a proactive, experienced Senior Full 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 forward new development. Technology Stack More ❯

Social network you want to login/join with: Senior Full Stack C# .NET Developer, portsmouth, hampshire col-narrow-left Client: WebX Systems Ltd. Location: portsmouth, hampshire, United Kingdom Job Category: Other - EU work permit required: Yes col-narrow-right Job Views: 4 Posted: 31.05.2025 Expiry Date: 15.07.2025 col-wide Job Description: 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, UltraAuthor, UltraXML , and UltraPortal —are used globally and combine proven legacy systems with cutting-edge, cloud-native innovations. As a privately owned UK business, we take pride in … a proactive, experienced Senior Full 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 forward new development. Technology Stack More ❯

Social network you want to login/join with: Senior Full Stack C# .NET Developer, west london col-narrow-left Client: WebX Systems Ltd. Location: west london, United Kingdom Job Category: Other - EU work permit required: Yes col-narrow-right Job Views: 4 Posted: 31.05.2025 Expiry Date: 15.07.2025 col-wide Job Description: 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, UltraAuthor, UltraXML , and UltraPortal —are used globally and combine proven legacy systems with cutting-edge, cloud-native innovations. As a privately owned UK business, we take pride in … a proactive, experienced Senior Full 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 forward new development. Technology Stack More ❯

Social network you want to login/join with: Senior Full Stack C# .NET Developer, crawley, west sussex col-narrow-left Client: WebX Systems Ltd. Location: crawley, west sussex, United Kingdom Job Category: Other - EU work permit required: Yes col-narrow-right Job Views: 9 Posted: 06.06.2025 Expiry Date: 21.07.2025 col-wide Job Description: 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, UltraAuthor, UltraXML , and UltraPortal —are used globally and combine proven legacy systems with cutting-edge, cloud-native innovations. As a privately owned UK business, we take … a proactive, experienced Senior Full 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 forward new development. Technology Stack More ❯

Social network you want to login/join with: Senior Full Stack C# .NET Developer, watford, hertfordshire col-narrow-left Client: WebX Systems Ltd. Location: watford, hertfordshire, United Kingdom Job Category: Other - EU work permit required: Yes col-narrow-right Job Views: 4 Posted: 31.05.2025 Expiry Date: 15.07.2025 col-wide Job Description: 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, UltraAuthor, UltraXML , and UltraPortal —are used globally and combine proven legacy systems with cutting-edge, cloud-native innovations. As a privately owned UK business, we take pride in … a proactive, experienced Senior Full 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 forward new development. Technology Stack More ❯

Social network you want to login/join with: Senior Full Stack C# .NET Developer, south west london col-narrow-left Client: WebX Systems Ltd. Location: south west london, United Kingdom Job Category: Other - EU work permit required: Yes col-narrow-right Job Views: 4 Posted: 31.05.2025 Expiry Date: 15.07.2025 col-wide Job Description: 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, UltraAuthor, UltraXML , and UltraPortal —are used globally and combine proven legacy systems with cutting-edge, cloud-native innovations. As a privately owned UK business, we take … a proactive, experienced Senior Full 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 forward new development. Technology Stack More ❯

Non-negotiable) | Inside IR35 | Contract 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. … Key Responsibilities: Lead the full 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 and maintain project plans, RAID … Dynamics 365 CE/CRM 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 environments. Proficiency with project tools More ❯

to clients across the UK, EMEA, and APAC. As one of Salesforce’s most active AppExchange partners, we’ve built a reputation for delivering tailored, scalable, and high-performance systems that recruiters love. Our platform supports ambitious start-ups, global staffing firms, and everyone in between – and data is at the heart of every successful go-live. We’re … of the most critical parts of implementation: data. Location: Liverpool City Centre, hybrid (2 days a week) Why Join Seven20? Work with high-volume, high-complexity datasets across recruitment systems like Bullhorn, Vincere, and JobAdder Shape the future of our data tooling and ETL frameworks Collaborate directly with Delivery Managers, BAs, and Clients – you're not in the dark … improvements and efficiencies in the tools used and the processes involved in a data migration project. Key Responsibilities: Analyse, map, and migrate complex datasets from third-party Applicant Tracking Systems (ATS) and recruitment platforms - such as Bullhorn and Vincere - to Seven20 (Salesforce) Design, build and execute ETL workflows using tools such as Apache Hop, Salesforce Dataloader and custom developed More ❯

and fast-growing PostgreSQL community, EDB supports major government organizations, financial services, media and information technology companies. EDB’s data-driven solutions enable customers to modernize legacy systems and break data silos while leveraging enterprise-grade open source technologies. EDB delivers the confidence of up to 99.999% high availability with mission critical capabilities built in such as … and fast-growing PostgreSQL community, EDB supports major government organizations, financial services, media and information technology companies. EDB’s data-driven solutions enable customers to modernize legacy systems and break data silos while leveraging enterprise-grade open source technologies. EDB delivers the confidence of up to 99.999% high availability with mission critical capabilities built in such as … to technical solutions within the EDB Postgres AI platform. Propose, prototype, and implement solutions that support operational and analytical requirements. Deployment & Integration: Lead the deployment of data and AI systems within diverse and dynamic environments. Develop scalable processes to integrate EDB Postgres AI with existing data infrastructure, ensuring smooth interoperability with other databases, applications, and ETL pipelines. Operational Excellence More ❯

services. You will serve as the go-to engineer for: End-to-end data migration architecture ( on-premise to cloud or cloud-to-cloud). Designing scalable and secure systems using AWS services like S3, Lambda, and EKS, EC2, VPC, RDS. Interfacing with both legacy PHP/C# systems and modern .NET cloud-native services. We … needs by focusing on innovation to drive meaningful improvements in animal health. A bit more about the role, you will: Lead migration of data assets from legacy systems to our cloud-native environments using AWS and our bespoke Conversion Framework. Build new and maintain existing bespoke systems. Implement .NET-based microservices with strong observability and integration with … Terraform, and secure service architecture. Coach junior developers and collaborate cross-functionally with product and platform teams. So what are we looking for? Bachelor's in Computer Science , Information Systems, or equivalent experience. 7+ years in software or data engineering, with strong recent experience in cloud data migrations. Proficient with MySQL, OOP, AWS (EC2, S3, Lambda). Experience with More ❯

at least 05 years of Database Development experience in multiple sectors of IT. You will be working on in-house as well as client projects. You will develop new systems and maintain existing systems and upgrade legacy systems to integrate new cutting-edge technologies like Artificial Intelligence and Big data. Job Description: Undertake feasibility study … with internal staff, clients, and other stakeholders to gather requirements to design and develop desktop and web-based software solutions according to business needs. Design and develop new software systems by following the full Software Development Life Cycle (SDLC). Maintain existing software by fixing errors in programs and writing codes to add new features. Upgrade existing systems to integrate cutting-edge technologies like Artificial intelligence, Machine learning. Design and implement new databases to suit business needs. Optimise and maintain existing systems and databases to improve performance, and where required migrate SQL databases to NoSQL and Big Data technologies. Identify and suggest solutions for the technical issues faced by our clients or internal staff using the More ❯

correctly implemented Work with our “best practice” development processes (documentation, Test Plans, logging and Agile methodologies) Participate in the testing of a next generation platform to replace our legacy system and introduction of new functionality and products Troubleshoot technical issues/bugs and identify modifications where required Testing of a robust set of services and APIs to power More ❯

Site Reliability Engineer - Data Lakehouse ZILO is focused on transforming global transfer agency by providing a single global solution that replaces legacy technology and systems. Our mission is to create sustainable value for firms and the customers they serve, all while putting people first. With a design-driven approach and a commitment to innovation, our team of experts … closely with data scientists and business analysts to understand data requirements and translate them into technical solutions Collaborate with DevOps and IT teams to deploy, monitor and troubleshoot data systems Develop and maintain documentation on data infrastructure and processes Stay current with the latest data engineering technologies, tools and practices Qualifications Bachelor's degree in computer science, engineering or … related field Minimum of 3 years of experience in data engineering roles Strong proficiency in SQL, ETL processes and database management systems (e.g., MySQL, PostgreSQL, MongoDB) Hands-on experience with AWS services for data processing, storage and analysis (e.g., S3, Redshift, EMR, Glue) Familiarity with programming languages such as Python or Java Understanding of data warehousing concepts and data More ❯

our team in designing and developing a robust Core Platform, driving the advancement of our Backend-as-a-Service (BaaS) offering, and supporting the migration of legacy systems to the new architecture. As a key member of our team, you will play an important role in shaping the platform and services that support a suite of mobile … and web applications. Your responsibilities will include participating in tech design and developing robust, scalable, and secure backend systems and ensuring to follow our standards for quality, integrity and compliance. As part of the Core Platform, there is also an admin panel a SPA built in React, which will expand in parallel with backend functionalities. In this role you … DevOps, to deliver high-quality software solutions. Write clean, maintainable, and efficient code following best practices and coding standards. Perform code reviews and provide constructive feedback. Continuously improving existing systems by identifying and implementing performance optimizations and refactoring opportunities. Foster ensuring robust testing and validation of software through unit testing, integration testing, contract testing, and automated testing frameworks. Participate More ❯

/ASP.NET, C# Utilize Continuous Integration and Delivery development Collaborate closely with other developers, testers, front-end designers, and product owners Assist in the migration from legacy systems to AWS (Amazon Web Services) What We're Looking For: Basic Required Qualifications: Strong experience with .NET Core/ASP.NET , C# , and Entity Framework Proficient in front-end technologies … Ability to handle multiple tasks and meet deadlines in a fast-paced environment Additional Preferred Qualifications: Proven experience in monitoring, analyzing, and optimizing the performance of large-scale distributed systems in a cloud environment Proven experience with Windows production environments, including managing servers, operating systems, and network configurations within the cloud Proven scripting and automation skills, preferably Powershell More ❯

first approach, working in a fast paced and CI/CD driven environment. Capital One is not your normal financial services company constrained by a fixed mindset and legacy systems. We're an agile business that dreams big, has the resources to deliver big and the credentials to back it up, as we were the first major bank … improving or maintaining the Configuration Compliance programme. Handle stakeholder facing elements of the role with high standards of customer service. Be part of an On-Call rota covering our systems 24x7 (approx 1 week in 10). Bring a can-do attitude to your work, looking to grow and evolve your technical skills and share your knowledge to grow … and Hashicorp Vault. Contributing to solving Enterprise scale problems. Delivering work for multiple stakeholders. Managing security and technology in a regulated environment. What it takes to build and own systems at Enterprise scale. We are committed to creating a level playing field and seek to create teams that are representative of our customers and the communities we serve. We More ❯

documentation and records for future reference. Technical Design Author designs and blueprints for the engineering teams to implement and follow. Analyse, understand, and build documentation for the existing legacy system, including its functionalities, challenges, and limitations – sharing your documentation and plans with senior teammembers to plan for the future. Own the Technical Design Authority process, to ensure all … in at least one backend programming language (.NET preferred). Ability to work independently and manage multiple priorities effectively. Strong problem-solving and analytical skills. Experience working with legacy code modernization projects. Knowledge of CI/CD pipelines and DevOps practices. Experience with IaC tools like Terraform or Azure Resource Manager. Experience in containerization technologies like Docker and More ❯

documentation and records for future reference. Technical Design Author designs and blueprints for the engineering teams to implement and follow. Analyse, understand, and build documentation for the existing legacy system, including its functionalities, challenges, and limitations – sharing your documentation and plans with senior teammembers to plan for the future. Own the Technical Design Authority process, to ensure all … in at least one backend programming language (.NET preferred). Ability to work independently and manage multiple priorities effectively. Strong problem-solving and analytical skills. Experience working with legacy code modernization projects. Knowledge of CI/CD pipelines and DevOps practices. Experience with IaC tools like Terraform or Azure Resource Manager. Experience in containerization technologies like Docker and More ❯

documentation and records for future reference. Technical Design Author designs and blueprints for the engineering teams to implement and follow. Analyse, understand, and build documentation for the existing legacy system, including its functionalities, challenges, and limitations – sharing your documentation and plans with senior teammembers to plan for the future. Own the Technical Design Authority process, to ensure all … in at least one backend programming language (.NET preferred). Ability to work independently and manage multiple priorities effectively. Strong problem-solving and analytical skills. Experience working with legacy code modernization projects. Knowledge of CI/CD pipelines and DevOps practices. Experience with IaC tools like Terraform or Azure Resource Manager. Experience in containerization technologies like Docker and More ❯