Legacy Systems Jobs in the UK

101 to 125 of 1,460 Legacy Systems Jobs in the UK

System Analyst

United Kingdom
Vallum Associates
join our team. The ideal candidate will serve as a key bridge between business stakeholders and development teams , helping to modernize and optimize BAU processes currently running on legacy systems. This role requires hands-on technical expertise in API development , React , and strong proficiency in SQL (preferably including Oracle SQL). Key Responsibilities: Collaborate with business stakeholders to … BAU (Business-as-Usual) processes . Analyze and propose improvements to existing BAU workflows to drive efficiency and performance. Support and influence the digital transformation of legacy systems to modern platforms. Act as a system analyst with deep understanding of application architecture and integration points. Work closely with third-party vendors to manage dependencies, issues, and timelines. … system analysis . Strong hands-on experience with: API development (REST) .NET SQL (strong proficiency; Oracle SQL preferred) Demonstrated experience in digital transformation projects , especially involving legacy systems . Solid understanding of SDLC , change management , and requirement gathering . Experience working with third-party vendors and managing external stakeholders . Ability to convert business needs into technical More ❯
Posted:

System Analyst

London, England, United Kingdom
Vallum Associates
join our team. The ideal candidate will serve as a key bridge between business stakeholders and development teams , helping to modernize and optimize BAU processes currently running on legacy systems. This role requires hands-on technical expertise in API development , React , and strong proficiency in SQL (preferably including Oracle SQL). Key Responsibilities: Collaborate with business stakeholders to … BAU (Business-as-Usual) processes . Analyze and propose improvements to existing BAU workflows to drive efficiency and performance. Support and influence the digital transformation of legacy systems to modern platforms. Act as a system analyst with deep understanding of application architecture and integration points. Work closely with third-party vendors to manage dependencies, issues, and timelines. … system analysis . Strong hands-on experience with: API development (REST) .NET SQL (strong proficiency; Oracle SQL preferred) Demonstrated experience in digital transformation projects , especially involving legacy systems . Solid understanding of SDLC , change management , and requirement gathering . Experience working with third-party vendors and managing external stakeholders . Ability to convert business needs into technical More ❯
Posted:

Trading Systems Engineer (Equities)

London, England, United Kingdom
Berenberg
our business units. Our technology teams offer you an environment that will present you with exciting challenges - be it through the support and further development of legacy systems or the introduction of modern technologies such as AI, machine learning and highly automated trading applications. Our Technology department of around 300 employees works largely in an agile way … team We are embarking on a multi-year project to revamp a large part of our equity trading technology stack. This greenfield project will involve designing and implementing new systems, such as pre/post-trade risk engines, market data distribution, reference data handling, and the build-up of trading gateways, while also aligning with the modernisation of Berenberg … increases in trading activities. Ensure the system supports global equity market trading with high availability. Develop bespoke trading workflows tailored to clients across multiple trading desks. Design and optimise systems to dynamically scale in response to market events such as interest rate decisions or breaking news. Collaborate closely with other IB Engineering teams and project members. Strong proficiency in More ❯
Posted:

Senior OneStream Developer

London, England, United Kingdom
JR United Kingdom
part of their OneStream implementation. This newly created position will see this individual maintaining, Supporting and developing OneStream on both Planning and Consolidation and work collaboratively with the broader systems team who will be transitioning from their legacy system. This role ensures the smooth functioning of the platform, supporting processes in Financial Planning & Analysis (FP&A), consolidation … IFRS) and financial reporting. Skills: Must have strong knowledge of the OneStream platform, particularly in the areas of financial consolidation, planning, and reporting. Experience in managing and maintaining financial systems and databases. Strong analytical and problem-solving skills, with the ability to troubleshoot complex system issues. Proficient in system integration, data management, report development and financial reporting. Excellent communication … for querying and managing data. Must demonstrate solid experience writing business rules Familiarity with integrations (APIs, data loading tools) and cloud-based systems. Knowledge of financial software and ERP systems is beneficial. For more information on this or other EPM roles across the UK, please contact Chanel Betambeau #J-18808-Ljbffr More ❯
Posted:

Senior OneStream Developer

Slough, England, United Kingdom
JR United Kingdom
part of their OneStream implementation. This newly created position will see this individual maintaining, Supporting and developing OneStream on both Planning and Consolidation and work collaboratively with the broader systems team who will be transitioning from their legacy system. This role ensures the smooth functioning of the platform, supporting processes in Financial Planning & Analysis (FP&A), consolidation … IFRS) and financial reporting. Skills: Must have strong knowledge of the OneStream platform, particularly in the areas of financial consolidation, planning, and reporting. Experience in managing and maintaining financial systems and databases. Strong analytical and problem-solving skills, with the ability to troubleshoot complex system issues. Proficient in system integration, data management, report development and financial reporting. Excellent communication … for querying and managing data. Must demonstrate solid experience writing business rules Familiarity with integrations (APIs, data loading tools) and cloud-based systems. Knowledge of financial software and ERP systems is beneficial. For more information on this or other EPM roles across the UK, please contact Chanel Betambeau #J-18808-Ljbffr More ❯
Posted:

Senior OneStream Developer

London Area, United Kingdom
Hybrid / WFH Options
SystemsAccountants
part of their OneStream implementation. This newly created position will see this individual maintaining, Supporting and developing OneStream on both Planning and Consolidation and work collaboratively with the broader systems team who will be transitioning from their legacy system. This role ensures the smooth functioning of the platform, supporting processes in Financial Planning & Analysis (FP&A), consolidation … IFRS) and financial reporting. Skills: Must have strong knowledge of the OneStream platform, particularly in the areas of financial consolidation, planning, and reporting. Experience in managing and maintaining financial systems and databases. Strong analytical and problem-solving skills, with the ability to troubleshoot complex system issues. Proficient in system integration, data management, report development and financial reporting. Excellent communication … for querying and managing data. Must demonstrate solid experience writing business rules Familiarity with integrations (APIs, data loading tools) and cloud-based systems. Knowledge of financial software and ERP systems is beneficial. For more information on this or other EPM roles across the UK, please contact Chanel Betambeau More ❯
Posted:

Senior OneStream Developer

City of London, London, United Kingdom
Hybrid / WFH Options
SystemsAccountants
part of their OneStream implementation. This newly created position will see this individual maintaining, Supporting and developing OneStream on both Planning and Consolidation and work collaboratively with the broader systems team who will be transitioning from their legacy system. This role ensures the smooth functioning of the platform, supporting processes in Financial Planning & Analysis (FP&A), consolidation … IFRS) and financial reporting. Skills: Must have strong knowledge of the OneStream platform, particularly in the areas of financial consolidation, planning, and reporting. Experience in managing and maintaining financial systems and databases. Strong analytical and problem-solving skills, with the ability to troubleshoot complex system issues. Proficient in system integration, data management, report development and financial reporting. Excellent communication … for querying and managing data. Must demonstrate solid experience writing business rules Familiarity with integrations (APIs, data loading tools) and cloud-based systems. Knowledge of financial software and ERP systems is beneficial. For more information on this or other EPM roles across the UK, please contact Chanel Betambeau More ❯
Posted:

Netsuite Solutions Architect

Milton Keynes, Buckinghamshire, South East
Nexus Jobs Limited
Ideally have at least 5 to 10 years experience of system design/architecture in cloud-based solutions including a minimum 5 years in NetSuite OneWorld. Multiple Finance ERP systems implementations ?" in complex Regional or global brown-field environments. Experience of full software delivery lifecycle including capturing business requirements, developing solutions, user testing & training, post go-live support and … . Have the ability lead initiatives and solution enhancements. With confidence and judgement to plan and accomplish goals. Ability to translate business/operational requirements into effective and efficient systems solutions. Experience to manage conflicting priorities/complex workload. The NetSuite Solution Architect role will require an in-depth knowledge and use of NetSuite’s OneWorld platform in a … complex Regional or preferably Global environment - working with established, ‘brown-field’ operations. To implement NetSuite Order-to-Cash functionality in multiple schools to replace various legacy finance systems Own the design of the solution, working with third party developers to write the required code Work with the data migration specialist to ensure legacy data is More ❯
Employment Type: Permanent
Posted:

Data Migration Lead

London Area, United Kingdom
Hybrid / WFH Options
Albany Beck
a new core banking and wealth platform using Avaloq for a leading Wealth Management firm. This strategic transformation programme aims to modernise and streamline front-to-back operations, consolidate systems, and enhance digital capabilities across the client lifecycle. As part of this large-scale implementation, a dedicated Data Migration Lead is required to own and drive the end-to … to Avaloq (desirable but not essential). Strong knowledge of data migration methodologies including data mapping, extraction, cleansing, transformation, reconciliation, and cutover planning. Experience working with legacy systems and managing complex data landscapes including customer, account, transaction, product, and portfolio data. Understanding of the regulatory and operational implications of data handling in financial services, particularly within private … and GDPR/compliance considerations related to data migration. Experience managing third-party vendors and coordinating across multi-functional project teams. Skills Data analysis, profiling, and mapping across multiple systems End-to-end data migration planning and execution Defect management, reconciliation, and exception handling Strong documentation and communication skills for both technical and non-technical audiences Advanced stakeholder management More ❯
Posted:

Data Migration Lead

City of London, London, United Kingdom
Hybrid / WFH Options
Albany Beck
a new core banking and wealth platform using Avaloq for a leading Wealth Management firm. This strategic transformation programme aims to modernise and streamline front-to-back operations, consolidate systems, and enhance digital capabilities across the client lifecycle. As part of this large-scale implementation, a dedicated Data Migration Lead is required to own and drive the end-to … to Avaloq (desirable but not essential). Strong knowledge of data migration methodologies including data mapping, extraction, cleansing, transformation, reconciliation, and cutover planning. Experience working with legacy systems and managing complex data landscapes including customer, account, transaction, product, and portfolio data. Understanding of the regulatory and operational implications of data handling in financial services, particularly within private … and GDPR/compliance considerations related to data migration. Experience managing third-party vendors and coordinating across multi-functional project teams. Skills Data analysis, profiling, and mapping across multiple systems End-to-end data migration planning and execution Defect management, reconciliation, and exception handling Strong documentation and communication skills for both technical and non-technical audiences Advanced stakeholder management More ❯
Posted:

Data Migration Lead

London, England, United Kingdom
JR United Kingdom
a new core banking and wealth platform using Avaloq for a leading Wealth Management firm. This strategic transformation programme aims to modernise and streamline front-to-back operations, consolidate systems, and enhance digital capabilities across the client lifecycle. As part of this large-scale implementation, a dedicated Data Migration Lead is required to own and drive the end-to … to Avaloq (desirable but not essential). Strong knowledge of data migration methodologies including data mapping, extraction, cleansing, transformation, reconciliation, and cutover planning. Experience working with legacy systems and managing complex data landscapes including customer, account, transaction, product, and portfolio data. Understanding of the regulatory and operational implications of data handling in financial services, particularly within private … and GDPR/compliance considerations related to data migration. Experience managing third-party vendors and coordinating across multi-functional project teams. Skills Data analysis, profiling, and mapping across multiple systems End-to-end data migration planning and execution Defect management, reconciliation, and exception handling Strong documentation and communication skills for both technical and non-technical audiences Advanced stakeholder management More ❯
Posted:

Senior OneStream Developer

London, England, United Kingdom
Hybrid / WFH Options
SystemsAccountants
part of their OneStream implementation. This newly created position will see this individual maintaining, Supporting and developing OneStream on both Planning and Consolidation and work collaboratively with the broader systems team who will be transitioning from their legacy system. This role ensures the smooth functioning of the platform, supporting processes in Financial Planning & Analysis (FP&A), consolidation … IFRS) and financial reporting. Skills: Must have strong knowledge of the OneStream platform, particularly in the areas of financial consolidation, planning, and reporting. Experience in managing and maintaining financial systems and databases. Strong analytical and problem-solving skills, with the ability to troubleshoot complex system issues. Proficient in system integration, data management, report development and financial reporting. Excellent communication … for querying and managing data. Must demonstrate solid experience writing business rules Familiarity with integrations (APIs, data loading tools) and cloud-based systems. Knowledge of financial software and ERP systems is beneficial. For more information on this or other EPM roles across the UK, please contact Chanel Betambeau Seniority level Seniority level Mid-Senior level Employment type Employment type More ❯
Posted:

Data Migration Lead

London, England, United Kingdom
Albany Beck
a new core banking and wealth platform using Avaloq for a leading Wealth Management firm. This strategic transformation programme aims to modernise and streamline front-to-back operations, consolidate systems, and enhance digital capabilities across the client lifecycle. As part of this large-scale implementation, a dedicated Data Migration Lead is required to own and drive the end-to … to Avaloq (desirable but not essential). Strong knowledge of data migration methodologies including data mapping, extraction, cleansing, transformation, reconciliation, and cutover planning. Experience working with legacy systems and managing complex data landscapes including customer, account, transaction, product, and portfolio data. Understanding of the regulatory and operational implications of data handling in financial services, particularly within private … and GDPR/compliance considerations related to data migration. Experience managing third-party vendors and coordinating across multi-functional project teams. Skills Data analysis, profiling, and mapping across multiple systems End-to-end data migration planning and execution Defect management, reconciliation, and exception handling Strong documentation and communication skills for both technical and non-technical audiences Advanced stakeholder management More ❯
Posted:

Data Migration Consultant

Waterside, Lancashire, UK
Hays
to-end delivery of data migration activities for Oracle Cloud HCM implementations. You will design and manage the extraction, transformation, and loading (ETL) of data from legacy systems, ensuring data integrity, traceability, and readiness for go-live. You will work closely with functional, technical, and testing teams to align data requirements, validate outputs, and ensure a smooth … and accurate transition to the Oracle Cloud platform. Key Responsibilities: Lead the design, planning, and execution of all data migration activities from legacy HR systems (e.g., Oracle eBS) to Oracle Cloud HCM. Develop and manage ETL routines and data migration tools, ensuring scalability and accuracy. Define and maintain data mappings, transformation logic, and validation rules. Oversee data … eBS is highly desirable. Experience applying data governance frameworks and managing data quality improvement initiatives. Excellent problem-solving, communication, and documentation skills. Bachelor’s degree in Information Technology, HR Systems, or a related field. Relevant Oracle HCM certifications Start Date ASAP Interested in applying? Just reply with an up-to-date copy of your CV to get the ball More ❯
Posted:

Data Migration Consultant

Waterside, England, United Kingdom
Hays
to-end delivery of data migration activities for Oracle Cloud HCM implementations. You will design and manage the extraction, transformation, and loading (ETL) of data from legacy systems, ensuring data integrity, traceability, and readiness for go-live. You will work closely with functional, technical, and testing teams to align data requirements, validate outputs, and ensure a smooth … and accurate transition to the Oracle Cloud platform. Key Responsibilities: Lead the design, planning, and execution of all data migration activities from legacy HR systems (e.g., Oracle eBS) to Oracle Cloud HCM. Develop and manage ETL routines and data migration tools, ensuring scalability and accuracy. Define and maintain data mappings, transformation logic, and validation rules. Oversee data … eBS is highly desirable. Experience applying data governance frameworks and managing data quality improvement initiatives. Excellent problem-solving, communication, and documentation skills. Bachelor’s degree in Information Technology, HR Systems, or a related field. Relevant Oracle HCM certifications Start Date ASAP Interested in applying? Just reply with an up-to-date copy of your CV to get the ball More ❯
Posted:

Data Migration Consultant

Waterside, Scotland, United Kingdom
Hays
to-end delivery of data migration activities for Oracle Cloud HCM implementations. You will design and manage the extraction, transformation, and loading (ETL) of data from legacy systems, ensuring data integrity, traceability, and readiness for go-live. You will work closely with functional, technical, and testing teams to align data requirements, validate outputs, and ensure a smooth … and accurate transition to the Oracle Cloud platform. Key Responsibilities: Lead the design, planning, and execution of all data migration activities from legacy HR systems (e.g., Oracle eBS) to Oracle Cloud HCM. Develop and manage ETL routines and data migration tools, ensuring scalability and accuracy. Define and maintain data mappings, transformation logic, and validation rules. Oversee data … eBS is highly desirable. Experience applying data governance frameworks and managing data quality improvement initiatives. Excellent problem-solving, communication, and documentation skills. Bachelor’s degree in Information Technology, HR Systems, or a related field. Relevant Oracle HCM certifications Start Date ASAP Interested in applying? Just reply with an up-to-date copy of your CV to get the ball More ❯
Posted:

Data Migration Consultant

London, England, United Kingdom
Hays
to-end delivery of data migration activities for Oracle Cloud HCM implementations. You will design and manage the extraction, transformation, and loading (ETL) of data from legacy systems, ensuring data integrity, traceability, and readiness for go-live. You will work closely with functional, technical, and testing teams to align data requirements, validate outputs, and ensure a smooth … and accurate transition to the Oracle Cloud platform. Key Responsibilities: Lead the design, planning, and execution of all data migration activities from legacy HR systems (e.g., Oracle eBS) to Oracle Cloud HCM. Develop and manage ETL routines and data migration tools, ensuring scalability and accuracy. Define and maintain data mappings, transformation logic, and validation rules. Oversee data … eBS is highly desirable. Experience applying data governance frameworks and managing data quality improvement initiatives. Excellent problem-solving, communication, and documentation skills. Bachelor’s degree in Information Technology, HR Systems, or a related field. Relevant Oracle HCM certifications Start Date ASAP Interested in applying? Just reply with an up-to-date copy of your CV to get the ball More ❯
Posted:

CCaaS Application Architect - UK

London, England, United Kingdom
Eventus Solutions Group
and UC environments 5 or 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, AI tools, ACD, CRM Integrations … dive into the code as 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 implications. Enterprise migration experience … including leading whiteboard sessions, technical 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 demos within Eventus lab environments More ❯
Posted:

CRM Platform Manager, Salesforce

City of London, England, United Kingdom
ARC IT Recruitment
the day-to-day operation of the CRM platform, ensuring seamless functionality and troubleshooting issues. Support system integrations and monitor application performance. Manage data migration from Legacy systems, ensuring accuracy and integrity. Collaborate with Investment Bankers, Operations, Business Support, and IT teams to tailor DealCloud to business needs. Drive a modern IT Change & Release process for the More ❯
Posted:

CRM Platform Manager, Salesforce

South East London, England, United Kingdom
ARC IT Recruitment
the day-to-day operation of the CRM platform, ensuring seamless functionality and troubleshooting issues. Support system integrations and monitor application performance. Manage data migration from Legacy systems, ensuring accuracy and integrity. Collaborate with Investment Bankers, Operations, Business Support, and IT teams to tailor DealCloud to business needs. Drive a modern IT Change & Release process for the More ❯
Posted:

Senior C# Software Developer

Stockport, Lancashire, United Kingdom
Hybrid / WFH Options
Adria Solutions Ltd
collaborative team working across the full Microsoft and Azure technology stack. This is a hands-on role offering the chance to work on both legacy and greenfield systems, contribute to architectural decisions, and support the continuous improvement of development practices. Key responsibilities: Develop and maintain scalable, high-quality software using C#, .NET, and Azure Lead on coding … with Azure services and DevOps tools Understanding of secure coding and software development best practices Desirable experience: Microservices, containers (Docker/Kubernetes) Front-end frameworks such as Vue.js Messaging systems (e.g. Service Bus, Kafka) NoSQL databases, REST APIs, CI/CD pipelines Benefits: 25 days holiday plus bank holidays and additional Christmas leave Flexible 37.5-hour week Hybrid working More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior C# Software Developer

Manchester, North West, United Kingdom
Hybrid / WFH Options
Adria Solutions
collaborative team working across the full Microsoft and Azure technology stack. This is a hands-on role offering the chance to work on both legacy and greenfield systems, contribute to architectural decisions, and support the continuous improvement of development practices. Key responsibilities: Develop and maintain scalable, high-quality software using C#, .NET, and Azure Lead on coding … with Azure services and DevOps tools Understanding of secure coding and software development best practices Desirable experience: Microservices, containers (Docker/Kubernetes) Front-end frameworks such as Vue.js Messaging systems (e.g. Service Bus, Kafka) NoSQL databases, REST APIs, CI/CD pipelines Benefits: 25 days holiday plus bank holidays and additional Christmas leave Flexible 37.5-hour week Hybrid working More ❯
Employment Type: Permanent, Work From Home
Salary: £60,000
Posted:

Dynamics Business Central Consultant

London, United Kingdom
Cloud Decisions
be working on the latest and most cutting edge tech from the outset. If you are an expert in and passionate about designing and configuring Dynamics 365 Business Central systems then look no further! The role: Collaborating with clients to understand their business requirements and translate them into system configurations and customisations within Dynamics 365 Business Central. Designing and … enabling them to effectively utilise Dynamics 365 Business Central and maximise its potential. Performing data migration activities, ensuring the accurate and timely transfer of data from legacy systems to Dynamics 365 Business Central. Developing and maintaining technical documentation, including functional specifications, user guides, and training materials. Identifying opportunities for process improvements and advising clients on best practices More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

.NET Developer

Southampton, England, United Kingdom
Hybrid / WFH Options
Spectrum IT Recruitment
pay will be based on your skills and experience — talk with your recruiter to learn more. Base pay range Greenfield project combining the work of multiple legacy systems Southampton, Office based working (Must be based locally) Up to £50,000 per annum + benefits Although they might not be Pearson Hardman in the heart of New York … UK. They're specialists in injury law bringing justice and compensation to those who've faced life-altering circumstances. They've grown, merged and acquired other firms meaning their systems have become fragmented and now they're on a mission to fix this with 1 new slick platform that will streamline their operations and directly contribute to better outcomes …/software requirements Experience working as a business analyst or analyst developer Prior experience in a data migration from SQL to Azure cloud Prior experience merging and migrating multiple systems into 1 greenfield system Experience building a cloud based legal software application Software architecture or design experience If you are interested in this opportunity and want to hear more More ❯
Posted:

Junior Software Engineer

Manchester, England, United Kingdom
CarFinance 247
Functions and Azure Service Bus to process events and integrate with external APIs. Alongside cloud-based development, you will also be responsible for upgrading and maintaining legacy systems that operate outside of the cloud, ensuring they remain functional and compatible with modern solutions. As part of the role, you will collaborate with external lenders to develop and … version control & CI/CD (Bamboo, GitHub Actions, Azure DevOps) Experience with microservice architectures Awareness of SOLID coding principles Desirable: NoSQL database technologies (MongoDB, Cosmos) Docker workflows Container management systems (Kubernetes/Docker Swarm) Knowledge of cloud solutions (AWS/Azure/Google Cloud Platform) Knowledge of scripting languages (Bash and PowerShell) Administration of Windows and Linux servers #J More ❯
Posted:
Legacy Systems
10th Percentile
£42,500
25th Percentile
£50,500
Median
£65,000
75th Percentile
£84,250
90th Percentile
£105,000