1 to 25 of 28 Contract Legacy Systems Jobs in London

term ERP implementation project. This role will support a phased ERP rollout, ensuring accurate, compliant, and validated migration of data from legacy systems into a new enterprise platform within a regulated GMP environment. Key responsibilities: Plan, execute, and validate data migration activities from multiple legacy systems into a new ERP platform. Ensure data integrity, accuracy, traceability, and regulatory compliance throughout the migration lifecycle. Support and manage data archival, data cleansing, de-duplication, and transformation activities to improve data quality. Operate independently, managing workload, timelines, and methods of delivery. Required experience and skills ...

needs. Own the delivery of direct digital product journeys , ensuring seamless experiences with high conversion rates. Drive digital transformation by modernising legacy systems and integrating them into scalable, customer-centric platforms. Select and collaborate with engineering teams to ensure robust technical solutions and efficient delivery. Design … Senior Product Owner in financial services or fintech with significant experience of Mobile Applications/APPs and Portals Strong understanding of legacy systems and experience delivering digital transformation programmes, ideally within customer portals. Solid technical knowledge of software delivery, APIs, and system integration . Deep expertise ...

international membership organisation operating within the healthcare education and research sector. This forward-thinking not-for-profit organisation is seeking an experienced Digital Systems Manager to join them during an exciting period of digital transformation. About the Organisation As a multidisciplinary membership organisation, they champion research, education, and knowledge … providing online learning resources to members worldwide. The role The organisation has invested significantly in digital infrastructure over recent years, replacing legacy systems with a modern, integrated tech stack centred around Salesforce and Fonteva. They have built a sophisticated member portal, integrated online payment systems ...

functional testing using Azure Devops, XRAY and JIRA. It also includes defect tracking and management. Regression, Functional, emergency change and defect testing across systems in production. API testing, data validation, and batch process testing to ensure end-to-end system integrity. Designing and maintaining a test results dashboard … Framework/.NET Core, HTML/CSS/TypeScript/React, Python, SQL Server, Oracle). The role focuses on refactoring legacy systems to reduce technical debt, improve reliability and performance, and embed modern security patterns across the service estate. In addition, the engineer will contribute ...

side and client-side applications using .NET Framework/Core , React/TypeScript , and relational databases ( SQL Server , Oracle ). Refactor legacy systems to reduce technical debt and improve performance. Implement modern security patterns (OAuth2/OpenID Connect, OWASP principles). Optimise database queries and schemas; ensure ...

Ariba environment. Role Overview You will be responsible for delivering a controlled and effective migration from legacy OCR and document-processing systems into the Council’s new SAP landscape. The role will focus on ensuring seamless system integration, improved controls, and the realisation of efficiencies across Finance … London to support delivery and stakeholder engagement. A key element of the role will be change management , ensuring successful adoption of new processes and systems across internal teams and external suppliers. Key Responsibilities Lead the end-to-end migration of OCR and document-processing activities into SAP S/ ...

experience in Change Data Capture (CDC). The candidate will design and implement robust data migration strategies, ensuring seamless integration between legacy systems and modern cloud-based architectures. Responsibilities Architect CDC Pipelines: Design and optimize Change Data Capture workflows (IBM CDC or equivalent), including subscription design, bookmarks ...

looking for a senior C# Developer with a strong architectural focus to join a highly skilled engineering team working on business-critical systems at scale . This role sits at the heart of a major technology estate and offers the chance to modernise legacy platforms , shape technical … Doing Designing and developing applications using .NET Framework/.NET Core , React/TypeScript , Python , and relational databases Refactoring and modernising legacy systems to reduce technical debt and improve performance and reliability Embedding modern security patterns across APIs and services (authentication, authorisation, OWASP controls, secure access) Contributing ...

Data Migration Officer will play a key role in ensuring the accurate and secure migration of HR and payroll data from legacy systems into the new HCM platform. You will work closely with HR, technology teams, third-party suppliers, and a dedicated project team to deliver high ...

Role overview: The Data Analyst/Data Mapper, operating within the AWS environment, is responsible for analysing, transforming, & mapping data from legacy systems to the new LIMS system. This role demands strong analytical, technical, & AWS proficiency skills to ensure accurate, efficient, & secure data transfer. Key Responsibilities: Collaborate … with data engineers, data scientists, & business stakeholders to understand data sources, data quality, & data transformation requirements.. Perform data profiling & data quality assessments on legacy data, identifying data issues, inconsistencies & gaps. Develop & maintain data mapping, transformation rules, & data cleansing procedures tailored for the AWS environment. Required skills: AWS Services ...

technical stakeholders Desirable Experience: Hands-on experience with container platforms (Docker, Kubernetes) Experience designing and delivering cloud-native solutions or modernising Legacy systems Background working within government, defence, or highly regulated enterprise environments Experience supporting or leading DevOps or SRE-aligned teams Architecture or cloud certifications such … Professional Architect Additional Information: Roles require working within secure environments (on-site or hybrid depending on programme) Candidates must be comfortable working with classified systems, governance controls, and security standards Clearance transferability will be considered where applicable At Lucid, we celebrate difference and value diverse perspectives, underpinned ...

Clearance Nice-to-Have Skills Hands-on experience with container platforms (Docker, Kubernetes) Experience designing cloud-native solutions or modernising legacy systems Exposure to regulated, enterprise, or large-scale environments Architecture or cloud certifications (e.g. TOGAF, AWS/Azure/GCP Solutions Architect ) Familiarity with monitoring, logging ...

Role Define and validate the meaning, structure, and shape of target datasets Quantify and assess data quality issues across legacy systems Translate data anomalies into clearly defined and agreed business rules with stakeholders Essential Skills & Experience Assess data completeness, validity, consistency, and uniqueness, and interpret what issues … verify transformation results Geospatial & Public Data Experience Proven experience working with geospatial data , including spatial formats (e.g. vector, raster, GeoJSON, shapefiles), coordinate reference systems, and spatial analysis workflows Strong ability to interpret and apply geographical context within data processing pipelines Demonstrated experience identifying local or regional geospatial insights ...

North London is seeking a highly experienced Interim Data Modeller to design and implement a global finance and HR data model spanning multiple source systems . This is a pure data modelling role . The focus is on structure, consistency, and correctness of data, not reporting, dashboards, or downstream … across geographies, entities, and systems. Key responsibilities include: Designing and owning global canonical data models for Finance and HR Integrating data from multiple source systems (ERP, HRIS, payroll, planning tools) Defining conformed dimensions, facts, hierarchies, and reference data Resolving data conflicts across regions, entities, and legacy systems ...

heavily investing in modernising its data landscape to become a fully data-driven organisation. This includes migrating away from traditional legacy systems and adopting scalable, cloud-native data platforms. Within this context, the Risk Foundations Platform plays a critical role. The platform's vision is to design … enterprise-grade data products that enhance risk modelling, reporting, and regulatory compliance. A key strategic priority for the team is the decommissioning of legacy data stores and replacing them with modern, cloud-based capabilities that are fully owned and managed within the platform. Programme Focus The programme focuses ...

North London is seeking a highly experienced Interim Data Modeller to design and implement a global finance and HR data model spanning multiple source systems . This is a pure data modelling role . The focus is on structure, consistency, and correctness of data, not reporting, dashboards, or downstream … across geographies, entities, and systems. Key responsibilities include: Designing and owning global canonical data models for Finance and HR Integrating data from multiple source systems (ERP, HRIS, payroll, planning tools) Defining conformed dimensions, facts, hierarchies, and reference data Resolving data conflicts across regions, entities, and legacy systems ...

rollout of a new digital technology platform. This is a high-profile assignment within a complex operational environment, supporting the transition from a legacy system to a modern, real-time solution used across the entire business. You will act as the primary interface between the programme ...

providing regular progress updates.? Oversee data configuration and take-on activities, including strong data analytics skills tocompare, reconcile, and validate outputs from the legacy system to the new platform.? Lead and manage a small test team, coordinating testing efforts across multiple locations.? Ensure all project communications are accurate ...

processes declarations for goods entering and leaving the UK through ports and airports. This platform is a core replacement for legacy customs systems, supporting the electronic completion of customs information as well as the calculation and payment of duties and taxes. The system currently processes approximately ...

trusted architectural decision-maker within large organisations 8+ years' experience of UK Customs , covering both business and technology domains Strong understanding of enterprise-scale systems, integration, and solution design Excellent stakeholder management and communication skills Ability to operate confidently in regulated, high-profile environments Nice-to-Have Experience working … large government or public-sector programmes Exposure to legacy modernisation and complex system integration Familiarity with agile and hybrid delivery models Experience influencing architecture across multiple suppliers or vendors ...

Security Architect Requirement Rate; Flexible Location; Remote - adhoc travel to London Duration; 6 month initial You will be supporting a Legacy Application program in upgrading hundreds of business applications across Wintel, Linux and cloud environments. Core Competencies Legacy System Modernisation: Proven experience in upgrading legacy … CHECK-accredited experience conducting or supporting pre- and post-deployment security assessments, vulnerability management, and remediation planning. Technical Experience Wintel/Linux: Securing legacy applications via patching, hardening, and privilege management (e.g., Active Directory, SELinux). Cloud (AWS/Azure/GCP): Designing IAM policies, encryption (FIPS ...

platforms: Splunk, ELK/Opensearch, CloudWatch Logs Metrics & telemetry: Prometheus, Grafana, OpenTelemetry Event management: ServiceNow, PagerDuty, Moogsoft, BigPanda Strong knowledge of instrumentation for distributed systems, microservices, containers (EKS, ECS), serverless workloads, and legacy systems. Migration & Architecture Skills Proven experience supporting large-scale on-prem to AWS migrations ...

Middleware MVP to go live this year. You will play a pivotal part in shaping and aligning the data architecture across new and legacy platforms, with an initial focus on data flows, integrations, and understanding the current 'as-is' data estate. The programme includes a cross-functional team … document the current as-is data estate, including data domains, sources, flows, and integration points. Ensure strong alignment between Salesforce and legacy system data architecture, with a focus on seamless integration and data consistency. Collaborate closely with data modellers, solution architects, SMEs, platform managers, and data business analysts ...

public-sector environments. The role is hybrid working in London and is Inside IR35. Key Responsibilities Oversee end-to-end programmes focused on legacy application modernisation and upgrades. Lead on-premise to cloud transformation programmes (AWS and/or Azure). Drive the successful delivery of software … timeline commitments. Essential Experience Previous central government experience is mandatory. Proven experience managing large-scale technology or transformation programmes. Strong background in legacy system modernisation and cloud migration (AWS/Azure). Deep understanding of software delivery practices, methodologies, and governance. Experience managing multi-disciplinary teams and complex ...

interim and temporary professionals, fostering workplaces where everyone can contribute and succeed. On Behalf of Arup, we are looking for a Programme Director, Finance Systems Transformation Programme for a 12 Month Day Rate Contract based in London. Purpose of the role: The Finance Systems Transformation Programme … advisor to executives, translating complex delivery detail into clear, outcome-focused insights. Lead key decision-making forums and ensure decisions drive long-term value. Systems Integrator & Vendor Management Coordinate SI and third-party partners, ensuring delivery quality and adherence to contractual obligations. Monitor dependencies (including with the People Fusion ...