1 to 25 of 405 Legacy Systems Jobs in the UK

Role:HR Data Administrator/AnalystLocation:Coventry Contract: 6 Months (3 Days A Week)Day Rate: Up to £200/day (All in) Support Smarter HR Systems with One of Europe’s Leading Distributors We’re working with a major European distributor undergoing a transformation of their HR systems and processes. They’re now looking for a part … time HR Data Administrator/Analyst to support the HR Systems team with data management, reporting, and compliance. This is a great fit for someone who enjoys cleaning, organising, and handling sensitive HR data and who’s confident navigating legacy systems and older file structures. What You’ll Be Doing Managing HR data across legacy systems, backup drives, and SharePoint Supporting HR with ad hoc data queries and reporting tasks Locating, verifying and cleaning historical HR records Maintaining compliance and integrity across sensitive employee data Identifying gaps, errors, or inconsistencies using logical reasoning What They’re Looking For Experience handling HR data or other confidential records Familiarity with older file systems More ❯

tools to accelerate and enhance the migration process, and we’re looking for developers who are excited by the opportunity to work at the intersection of legacy systems, modern development, and AI-assisted engineering. Key Responsibilities - Collaborate with the existing team to re-engineer Oracle PLSQL stored procedures into C# services. - Design and implement .NET-based components … that integrate with both legacy PHP systems and new PostgreSQL databases. - Work closely with business analysts and stakeholders to ensure functional parity and identify opportunities for enhancement. - Participate in the design of a hybrid architecture that supports phased migration. - Use AI-assisted tools to analyze, translate, and optimize legacy code. - Support BAU operations during the … Required SkillsExperience - 5+ years of experience in .NET/C# development, with a strong focus on backend services and data access layers. - Proven experience in migrating legacy systems, especially from Oracle to PostgreSQL or similar. - Strong understanding of PL/SQL and experience translating stored procedures into application logic. - Familiarity with PostgreSQL, including performance tuning and SQL More ❯

tools to accelerate and enhance the migration process, and we’re looking for developers who are excited by the opportunity to work at the intersection of legacy systems, modern development, and AI-assisted engineering. Key Responsibilities - Collaborate with the existing team to re-engineer Oracle PLSQL stored procedures into C# services. - Design and implement .NET-based components … that integrate with both legacy PHP systems and new PostgreSQL databases. - Work closely with business analysts and stakeholders to ensure functional parity and identify opportunities for enhancement. - Participate in the design of a hybrid architecture that supports phased migration. - Use AI-assisted tools to analyze, translate, and optimize legacy code. - Support BAU operations during the … Required SkillsExperience - 5+ years of experience in .NET/C# development, with a strong focus on backend services and data access layers. - Proven experience in migrating legacy systems, especially from Oracle to PostgreSQL or similar. - Strong understanding of PL/SQL and experience translating stored procedures into application logic. - Familiarity with PostgreSQL, including performance tuning and SQL More ❯

in cloud architecture and implementation. • 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 or Windows-based x86 servers. PREFERRED QUALIFICATIONS • Strong communication skills with the ability to explain … both technical and non-technical 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 with analyzing on-premises mainframe More ❯

for ensuring all master data 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 risks Manage onboarding process for … accounts to ensure data accuracy 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 maintain item data in line … with new launches 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, contact, pricing, item, pack in, add More ❯

Business Systems Expert for PGMS Location: Royston, UK World-changing careers, enabled by Johnson Matthey. With more than 200 years history, join us and help to accelerate the transition to net-zero! As a Business Systems Expert, you'll contribute to JM's mission as a world leader in sustainable technology, transforming energy and reducing carbon emissions for … a cleaner, brighter future. As a Business Systems Expert for PGMS, you will help drive our goals by: Engage with the business to identify and implement IT solutions to meet complex Business requirements. Lead collaboration across multiple functional areas such as Finance, Supply Chain, Commercial and Operations to determine the optimal solution. Continuously collaborate with cross-functional project team … to strategic planning and execution of IT projects, ensuring alignment with PGMS multiyear roadmap and legacy system risks Lead continuous improvement initiatives across global legacy systems, coordinating efforts and aligning with MOM-level strategies Provide leadership and subject matter expertise to guide PGMS teams, Business Analysts, and management on system risks and priorities Oversee system More ❯

design patterns API Development Building and maintaining RESTful APIs Solid understanding of HTTP protocols, status codes, headers, etc. API documentation using tools like Swagger/OpenAPI Legacy Systems Exposure to or experience with WCF services - we still support some older systems, so comfort working with a mix of modern and legacy tech is key … smart, supportive people who value clean code and collaboration You'll have space to grow, technically, professionally, and personally Experience Core C# & .NET Skills API Development Legacy Systems Security Integration & Communication Database Integration Keywords c# .Net API Location United Kingdom Apply today! We are valconeers Close Software Developer Job Primary Location: United Kingdom First Name Last Name More ❯

something special to the table, including you! So, even if you feel that you're close but not an exact match, we encourage you to apply. Overview The Business Systems Migration Analyst is tasked with managing and executing data migration workstreams within the Acturis insurance software platform. This role is crucial in ensuring the accurate and efficient transfer of … data from legacy systems to Acturis, while maintaining data integrity throughout the process. In this role you will support the overall implementation process, playing a key role in the successful transition to the Acturis platform. If you have a keen eye for detail and are skilled in data migration, we encourage you to apply. How you'll … and risk assessments. Compare legacy and target functionality with an open mind, adopting a best practice approach. Data Extraction and Transformation : Extract data from legacy systems using appropriate tools and techniques. Transform and cleanse data to ensure compatibility with Acturis platform requirements. Data Loading and Validation : Load transformed data into Acturis, ensuring accuracy and completeness. More ❯

currently undergoing a large-scale digital transformation. They are looking for a Full Stack Developer with strong Microsoft and Azure experience to help modernise and integrate legacy systems with cloud-native, scalable applications. This is a hands-on role with involvement across the full software development lifecycle. You'll work in a hybrid environment with a tech … skills with a focus on scalability and security Experience working in agile teams and collaborating with product/design stakeholders Nice to Have Experience with modernising legacy systems Microsoft Azure Developer Certification Familiarity with Durable Functions , Logic Apps, or messaging systems like Event Grid Perks & Benefits 25 days holiday + birthday off Hybrid working Professional development More ❯

Hybrid), £475-525 per day Inside IR35 Contract role for an experienced Business Data Analyst required to support a large-scale transformation programme, focused on replacing legacy systems with Salesforce CRM and delivering strategic improvements to customer data. You'll bring proven experience in data analysis, data mapping, and data migration projects within CRM or enterprise system … strong advantage. This role is for a proactive and detail-oriented Data Analyst to support a major CRM and customer data transformation, including the migration from legacy systems to Salesforce. This role will focus on analysing customer data, documenting legacy structures, identifying data quality issues, and supporting data mapping, cleansing, validation, and reconciliation activities. Working … driving insight, enabling CRM optimisation, and ensuring the integrity and successful delivery of customer data throughout the migration process. Experience Required: Proven experience supporting data migration projects, including legacy data analysis and transformation. Familiarity with data governance frameworks, including stewardship, ownership, and quality monitoring. Proficiency in SQL, Excel, python and data visualisation tools (e.g., Power BI, Tableau). More ❯

Apply online only) per day Inside IR35 Contract role for an experienced Business Data Analyst required to support a large-scale transformation programme, focused on replacing legacy systems with Salesforce CRM and delivering strategic improvements to customer data. You'll bring proven experience in data analysis, data mapping, and data migration projects within CRM or enterprise system … strong advantage. This role is for a proactive and detail-oriented Data Analyst to support a major CRM and customer data transformation, including the migration from legacy systems to Salesforce. This role will focus on analysing customer data, documenting legacy structures, identifying data quality issues, and supporting data mapping, cleansing, validation, and reconciliation activities. Working … driving insight, enabling CRM optimisation, and ensuring the integrity and successful delivery of customer data throughout the migration process. Experience Required: Proven experience supporting data migration projects, including legacy data analysis and transformation. Familiarity with data governance frameworks, including stewardship, ownership, and quality monitoring. Proficiency in SQL, Excel, python and data visualisation tools (e.g., Power BI, Tableau). More ❯

ongoing evolution of key platforms in collaboration with cross-functional teams. For this, they are looking for a technically confident developer who's comfortable working across a range of systems, technologies, and business needs. Key Responsibilities: Participate in the design, enhancement, and migration of legacy systems built in C#, VB, and Angular, using MySQL, PostgreSQL, and … maintainability, and ongoing evolution. Contribute to the implementation of modern architectures: microservices, containerised services, and serverless cloud-native components in AWS. Diagnose and resolve complex support issues in legacy applications. Contribute to Agile processes using KANBAN, ensuring transparency and delivery alignment. Document architecture decisions, deployment processes, and codebase changes clearly and thoroughly. Skills & Experience: Expertise in backend development … Javascript, HTML, CSS Strong database skills with SQL Server, MySQL, and PostgreSQL Familiarity working within a cloud environment, particularly AWS or Azure Experience maintaining and modernising legacy systems Experience working in a client-facing or business-facing technical role This is a full-time, permanent role, offering a starting salary up to £65,000 (Depending on experience More ❯

Our client an industry leading private sector business located in East Sussex is looking for a full stack .Net developer. Key Roles Participate in migration of legacy systems built in C#, VB.NET, Angular/TypeScript, using MySQL, PostgreSQL, and SQL Server technologies. Maintaining applications, ensuring reliability, maintainability, and evolution. Act as a liaison between the development team … Angular, TypeScript, JavaScript, HTML, CSS. SQL Server, MySQL, and PostgreSQL. AWS or Azure. Experience in a client-facing or business-facing technical role. Maintaining and modernising legacy systems, including VB.NET. Communication skills to engage confidently with non-technical stakeholders. Knowledge of Docker, CI/CD pipelines, GitHub, and Azure DevOps Reasonable Adjustments: Respect and equality are core More ❯

web development, ideally with experience in .NET Core, C#, and modern front-end frameworks. As the lead developer you will play a key role in reducing legacy systems, building shared libraries, and guiding the forming small internal development team in adopting best practices and modern frameworks. The Lead Developer salary & benefits: * Salary: c … the office Some of the main duties of the Lead Developer C# .NET will include: * Architect and oversee development of internal applications and services. * Lead the migration of legacy desktop and web applications to .NET Core, ensuring modularity, testability, and cross-platform compatibility. * Define and enforce coding standards, version control practices (Git), and CI/CD pipelines. Ensure … frameworks. * Proven ability to lead a small development team and enforce coding standards. * Experience with shared libraries, modular architecture, and multi-platform delivery. * Comfortable working with legacy systems and transitioning them to modern platforms. * Familiarity with CI/CD pipelines, Git, Azure DevOps, and containerisation (Docker/Kubernetes). * Strong communicator who can collaborate with internal stakeholders More ❯

actionable insight? We're looking for a Salesforce Data Analyst to support a major Enterprise Data transformation programme, playing a key role in the migration from legacy systems to the new Salesforce platform. As a Salesforce Data Analyst, you will support the successful delivery of our customer and CRM data strategy as part of a multi-year … transformation. In the early phase of the project, you'll be responsible for documenting current ('as-is') data structures, analysing legacy CRM systems, and identifying data quality issues and migration requirements. You will work across multiple teams to ensure data integrity, support effective data governance, and drive data quality during and after migration. This role is essential … processes Skills & Experience Strong background as a Data Analyst, with a focus on customer and CRM data Proven experience in data migration projects, particularly involving legacy CRM systems and Salesforce Hands-on experience with SQL, Excel, Python, and visualisation tools (Power BI or Tableau) Familiarity with Salesforce data models (Leads, Opportunities, Contacts, Accounts) Experience with Snowflake is More ❯

business that is in the middle of an exciting technology transformation. They are seeking a Senior .NET Developer to take a leading role in modernising their legacy systems and driving AI adoption across the company. This is a fantastic opportunity for someone passionate about technology evolution, AI tooling, and delivering clean, modern code. You’ll help replace … to a React front end (already 50% there!) Mentoring and supporting other developers while ensuring best practices Collaborating with IT and product teams to redesign and modernise core business systems Participating in architecture discussions, code reviews, and deployment strategy Writing maintainable, well-documented code and implementing scalable solutions What We’re Looking For: 5+ years of .NET development experience … with proven modernisation/migration projects Experience moving from legacy systems (VB.NET) to modern stacks Strong knowledge of C#, .NET Core, SQL Server, REST APIs, and cloud environments Hands-on experience using AI developer tools like GitHub Copilot or ChatGPT Passion for clean code, architecture, and technical leadership Strong communication skills and a collaborative mindset Why Join More ❯

now 7 years in a row! As a Lead Software Engineer , you will help build, support, and improve the software used across the organisation. This includes: In-house developed systems Integrations with third-party and internal systems Legacy systems Development tools and infrastructure You will lead by example, guide engineers, and support the team manager More ❯

benefits An established, financial services group is on the lookout for a Head of Data Engineering to lead their data platform transformation - a critical migration from legacy systems (SQL Server) to modern Azure cloud technologies. You'll oversee a 40-person team of engineers (across the UK and offshore), guide delivery of critical regulatory and treasury projects … banking/financial services sector Strategic mindset with a delivery-focused leadership style Tech Environment: Azure Data Stack (Synapse, Databricks, Azure SQL, Power BI) SQL, Python Legacy systems primarily in SQL Server Interview Process: Initial 30-minute informal converdation 60-minute technical/competency interview with Engineering Managers Final 90 minute session with senior leadership (CDO, CTO More ❯

Cutover Project Manager - SAP ERP Transformation Cutover Manager, Project Manager, SAP ERP Transformation, Data migration, Integration, Cutover workstream, Success Factors, S/4 HANA, ERP implementations, Legacy systems, SAP Activate methodology, Public Sector, Change management, Business readiness, ERP go-live. Manchester – Hybrid (could consider remote for the right candidate) 6 months initial contract £400-£450 per day … go/no-go criteria, and contingency planning. Collaborate with the data migration team to track data quality, reconciliation, validation, and transformation activities. Ensure readiness of legacy systems, interfaces, SAP environments, and interfaces for the cutover. Manage mock cutovers, dry runs, and dress rehearsals to identify gaps and mitigate risks. Facilitate and chair cutover-related governance forums More ❯

APIs for a global cybersecurity client-on meaningful, live projects used by the world's biggest organisations. Tackle Real Engineering Challenges From domain modelling and modernising legacy systems to building APIs from scratch, you'll solve technically challenging problems in a high-trust team that values clean architecture. You'll collaborate with frontend engineers, influence design decisions … Building and documenting RESTful APIs •Designing relational databases (PostgreSQL) •Translating requirements into clean, maintainable code •Working with cloud platforms (AWS, Azure, or GCP) •Improving and evolving legacy systems What You'll Need •3-5 years of Python experience •At least 1 year with Django •Strong backend/API development skills •Familiarity with relational databases and cloud platforms More ❯

in the country operating for over 20 years with some fantastic clients and projects, this role in particular is for a large scale Data Warehousing project upgrading a legacy system and helping to overhaul and modernise the clients systems. … They need 2-3 Data Engineers to join a large team to help deliver this project, you will need a strong Azure background, knowledge of updating legacy systems and experience managing and organising large amounts of data. Key Skills Assess and create an architectural blueprint of their Data Warehouse Strong ETL skills ideally experience with Boomi In … depth knowledge of Azure cloud BI validation reporting and user acceptance testing Experience of Data Migration projects from legacy systems If you think you match the core skills of the role please get in touch for more information on the role. More ❯

team: Set up an effective business partnering model by acting as the primary finance liaison for the Technology and Transformation teams Support decision-making around technology investments, capex, legacy system migration, and offshoring strategies Provide financial insight … into transformation initiatives and ensure alignment with business objectives FP&A: Conduct budgeting, forecasting, and variance analysis for technology spend Develop and maintain cost models for legacy systems, cloud migration, and outsourced services Monitor and report on key financial KPIs related to technology and transformation Process & Controls Development: Design and implement fit-for-purpose financial processes and … in finance business partnering within technology or transformation functions. Experience in a carve-out, PE-backed, or high-change environment is highly desirable. Strong understanding of legacy systems, cloud migration, and offshoring financial dynamics. Excellent stakeholder management and communication skills. Comfortable working in ambiguity and building processes from scratch. Please apply with a copy of your CV More ❯

change at scale-connecting data, people, and platforms to deliver measurable impact. Benefits & Extras Executive-level role with significant influence on company direction Opportunity to modernize legacy systems and build a best-in-class data environment High-impact, highly visible role reporting directly to the CIO Collaborative and forward-thinking IT leadership team Culture that values innovation … SQL Server) Overseeing data governance and stewardship frameworks to ensure quality, security, and compliance Building and leading a cross-functional team spanning engineering, BI, governance, and architecture Replacing legacy analytics tools with scalable, user-friendly platforms like Power BI and QlikSense Driving stakeholder alignment and adoption across merchandising, marketing, operations, and supply chai Championing a data-driven culture … consolidating and modernizing enterprise data environments 15+ years of experience in data analytics leadership roles Familiarity with cloud-based tools like Snowflake, Databricks, and FiveTran and legacy systems Strong communication skills with the ability to influence at all levels Proven leadership within matrixed or multi-departmental teams Background in change management and organizational transformation Retail industry experience More ❯

for continuous improvement and innovative solutions Work on both front-end and back-end development with a focus on C#, WPF, ASP.NET, and SQL Server Support legacy systems built with VB.NET and WinForms The Junior C# Developer will have the following skills: A solid understanding of C#and .Net Framework Knowledge or experience working with WPFand ASP.NET for … modern application development Experience or familiarity with SQL Server for database management Willingness to work with VB.NETand WinFormsin legacy systems Familiarity with HTML, CSS, and JavaScriptfor front-end development is a plus Self-sufficient, with the initiative to identify and solve problems independently Enthusiastic about developing high-quality and reliable software Ideal Candidate: You have a passion More ❯

problems. About the Role: You will spearhead the development and enhancement of enterprise-level reporting capabilities, leading the migration and integration of reporting frameworks from various legacy systems into Oracle Fusion. This role demands a commitment to ensuring data accuracy, performance, and business alignment, delivering reliable, insightful, and scalable reporting solutions in close collaboration with stakeholders. Key … Responsibilities: Lead the development and enhancement of enterprise-level reporting capabilities within Oracle Fusion. Lead the migration and integration of reporting frameworks from legacy systems into Oracle Fusion. Ensure data accuracy, performance, and business alignment of all reporting solutions. Collaborate closely with stakeholders to deliver reliable, insightful, and scalable reporting solutions. Essential Skills & Experience: Deep expertise in More ❯