101 to 125 of 657 Legacy Systems Jobs in the UK

Salesforce Solution Architect

Hiring Organisation
NTT DATA
Location
London, UK
Employment Type
Full-time
education, defence, etc. Familiarity with public sector regulations, compliance (e.g., GDPR, FOIA), and procurement processes. Knowledge of common public sector challenges: legacy systems, citizen engagement, case management, grants, licensing. Proficiency in key Salesforce architecture areas, particularly Service Cloud, Experience Cloud, and Public Sector Cloud. Public Sector Solutions ...

Salesforce Solution Architect (Public Sector)

Hiring Organisation
NTT DATA
Location
London, UK
Employment Type
Full-time
education, defence, etc. Familiarity with public sector regulations, compliance (e.g., GDPR, FOIA), and procurement processes. Knowledge of common public sector challenges: legacy systems, citizen engagement, case management, grants, licensing. Proficiency in key Salesforce architecture areas, particularly Service Cloud, Experience Cloud, and Public Sector Cloud. Public Sector Solutions ...

C360/MDM Developer

Location
Dunfermline, Scotland, United Kingdom
support ongoing master data management (MDM) modernization activities across enterprise systems. Key Responsibilities: Design, plan, and execute data migration strategies from legacy systems to Informatica MDM/IDMC C360 environments. Implement scalable and secure AWS infrastructure to host and support MDM workloads and supporting components. Collaborate with ...

C360/MDM Developer

Location
Livingston, Scotland, United Kingdom
support ongoing master data management (MDM) modernization activities across enterprise systems. Key Responsibilities: Design, plan, and execute data migration strategies from legacy systems to Informatica MDM/IDMC C360 environments. Implement scalable and secure AWS infrastructure to host and support MDM workloads and supporting components. Collaborate with ...

C360/MDM Developer

Location
City of Edinburgh, Scotland, United Kingdom
support ongoing master data management (MDM) modernization activities across enterprise systems. Key Responsibilities: Design, plan, and execute data migration strategies from legacy systems to Informatica MDM/IDMC C360 environments. Implement scalable and secure AWS infrastructure to host and support MDM workloads and supporting components. Collaborate with ...

Microsoft Biz Apps Technical Lead (Power Platform and Dynamics CE)

Location
Greater London, England, United Kingdom
development tools (e.g., GitHub Copilot) to enhance team velocity and code quality. Strong background in data migration strategies, including scripting complex transformations from legacy SQL or Oracle systems. In applying for a role with Hitachi Solutions Europe Limited and/or its affiliates (“Hitachi”) you consent to Hitachi ...

Senior AI Software Engineer (Azure)

Location
Park Central, England, United Kingdom
will pick up new domains quickly and often.A multi-agent case-handling assistant for a public sector client, retrieving from several legacy systems of record, with full audit trails and human-in-the-loop approval on every outbound decision.A document-intelligence pipeline for a utilities client that … technical delivery decisions when working in regulated client environments.Mentor and pair with less experienced colleagues.EngineeringBuild and deploy agentic AI applications and multi-agent systems on Azure using Microsoft Foundry (formerly Azure AI Foundry) and the Azure AI Services portfolio, including Azure OpenAI, Azure AI Search and Azure AI Document ...

Senior Next.js Developer

Hiring Organisation
scrumconnect ltd
Location
Swansea, West Glamorgan, United Kingdom
Employment Type
Contract
Contract Rate
GBP Annual
BPSS required, with eligibility and willingness to obtain SC clearance Desirable Experience with Ruby on Rails , particularly supporting migration, maintenance or integration with Legacy Front End estates Experience integrating with cross … government platforms such as GOV.UK One Login, GOV.UK Pay, GOV.UK Notify or digital wallets Experience supporting large-scale transformation away from Legacy systems, including older Java, AIX, Oracle or Mainframe environments Familiarity with AWS serverless patterns, Infrastructure as Code and proactive observability/monitoring Why Join Scrumconnect ...

Senior AI Software Engineer (Azure) - Cardiff

Location
Cardiff, Wales, United Kingdom
pick up new domains quickly and often. * A multi-agent case-handling assistant for a public sector client, retrieving from several legacy systems of record, with full audit trails and human-in-the-loop approval on every outbound decision.* A document-intelligence pipeline for a utilities client … delivery decisions when working in regulated client environments.* Mentor and pair with less experienced colleagues.Engineering* Build and deploy agentic AI applications and multi-agent systems on Azure using Microsoft Foundry (formerly Azure AI Foundry) and the Azure AI Services portfolio, including Azure OpenAI, Azure AI Search and Azure ...

Senior AI Software Engineer (Azure)

Location
United Kingdom
pick up new domains quickly and often. * A multi-agent case-handling assistant for a public sector client, retrieving from several legacy systems of record, with full audit trails and human-in-the-loop approval on every outbound decision.* A document-intelligence pipeline for a utilities client … delivery decisions when working in regulated client environments.* Mentor and pair with less experienced colleagues.Engineering* Build and deploy agentic AI applications and multi-agent systems on Azure using Microsoft Foundry (formerly Azure AI Foundry) and the Azure AI Services portfolio, including Azure OpenAI, Azure AI Search and Azure ...

Digital Technology Director

Hiring Organisation
Zodiac Maritime
Location
London, UK
Employment Type
Full-time
term technology strategy to meet the growing demands of the business. The Digital Technology Director will lead a dedicated technology leadership team (Head of Systems & Architecture, Head of Projects, Head of Data), manage relationships with third-party IT service providers and major software vendors, and oversee the deployment … acumen and strategic foresight to balance innovation with ROI and future-proofing. Technology ExpertiseDeep expertise in enterprise architecture, including integration of legacy systems with modern platforms. Strong understanding of SaaS enterprise systems, cloud technologies, and data-driven ecosystems. Experience managing both legacy and modern ...

Senior C# Developer

Hiring Organisation
GCS
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£400 - £416/day Inside IR35
join a strategic application modernisation programme. This role sits within a technology team responsible for evolving critical business applications, supporting a transition from legacy desktop solutions to modern web-based and cloud-enabled platforms. The successful candidate will work across the full software development lifecycle, contributing … Ability to work independently in a fast-paced environment Collaborative mindset and willingness to mentor junior developers Comfortable balancing support of legacy systems alongside modernisation initiatives GCS is acting as an Employment Business in relation to this vacancy. ...

Senior Java Developer

Hiring Organisation
Halian Technology Limited
Location
Bracknell, Berkshire, South East, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£85,000
trusted technology partner to major NHS Trusts , with its platform now widely used by clinicians across the UK. Replacing outdated legacy systems with intuitive, user-centric tools, they are improving how healthcare teams operate and ultimately enhancing patient outcomes. With multiple industry awards , major contracts secured … platform and wider engineering function. Youll join a high-performing team of 20+ engineers , working on a mix of greenfield and evolving systems , contributing across a full-stack, microservices architecture . This is more than just a coding role its an opportunity to build technology that directly improves lives ...

Digital Technology Director

Location
City Of London, England, United Kingdom
term technology strategy to meet the growing demands of the business. The Digital Technology Director will lead a dedicated technology leadership team (Head of Systems & Architecture, Head of Projects, Head of Data), manage relationships with third-party IT service providers and major software vendors, and oversee the deployment … acumen and strategic foresight to balance innovation with ROI and future-proofing. Technology Expertise Deep expertise inenterprise architecture, including integration of legacy systems with modern platforms. Strong understanding ofSaaS enterprise systems,cloud technologies, anddata-driven ecosystems. Experience managing both legacy and modern technology environments ...

Senior Software Engineer – Rock Physics Applications

Location
United Kingdom
desktop and cloud applications using modern software engineering practices (design patterns, SOLID principles, automated testing, continuous integration/delivery). Modernize legacy systems — Lead migration of mature C/C++ codebases to modern languages, runtimes, and UI/UX frameworks while preserving scientific accuracy and performance. Leverage … control (Git), and code review workflows. Hands‐on CI/CD experience — building, configuring, or maintaining automated build and deployment pipelines. Experience modernizing legacy software — migrating codebases from older languages or frameworks to current platforms, including UI/UX modernization. Self‐motivated and collaborative; thrives in a team ...

Senior Software Engineer - Rock Physics Applications

Hiring Organisation
Halliburton
Location
Abingdon, Oxfordshire, UK
Employment Type
Full-time
desktop and cloud applications using modern software engineering practices (design patterns, SOLID principles, automated testing, continuous integration/delivery). Modernize legacy systems — Lead migration of mature C/C++ codebases to modern languages, runtimes, and UI/UX frameworks while preserving scientific accuracy and performance. Leverage … control (Git), and code review workflows. Hands-on CI/CD experience — building, configuring, or maintaining automated build and deployment pipelines. Experience modernizing legacy software — migrating codebases from older languages or frameworks to current platforms, including UI/UX modernization. Self-motivated and collaborative; thrives in a team ...

Head of Engineering, Sales & Marketing Tools

Location
Greater London, England, United Kingdom
technology stack, including the engineering and customisation of Braze, the platform we use for customer engagement. The mandate is modernisation and reliability: re-architecting systems that have grown very quickly and making them dependable at a scale of more than 20 million users. This is a platform engineering … organisation through other engineering leaders, rather than running a single team. You have proven platform engineering experience at scale — building and running complex distributed systems, not feature delivery alone. You have navigated legacy migrations and re-architecture projects at 20M+ user scale. You have strong backend engineering ...

Senior Enterprise Architect

Hiring Organisation
Hackajob Ltd
Location
Sheffield, South Yorkshire, Yorkshire, United Kingdom
Employment Type
Permanent
roadmaps and drive implementation and adoption. Youll operate in a large, complex environment spanning legacy technologies from multiple eras, ensuring business-critical systems remain stable while new, modern components, built with open architecture, APIs and microservices, data/ML capabilities, and cloud where appropriate are introduced progressively … generous employer contribution. In this role youll: Build a thorough understanding of existing and target business functions, processes and assets Understand how current systems/components enable those capabilities, with particular focus on problem areas Partner with Business Architects to translate target capabilities into functional components and clear functional ...

Workday Financials Data Principal Consultant

Hiring Organisation
Cognizant
Location
London, UK
Employment Type
Full-time
loaded into Workday, ensuring consistency with source systems. Engage regularly with clients throughout the project lifecycle, ensuring a smooth transition from legacy systems to Workday Financials. Manage multiple tasks with limited direction while keeping stakeholders informed of progress, risks, and issues. Participate in training and internal knowledge ...

Senior Data Modeller (Salesforce & Enterprise Data)

Hiring Organisation
Valcon Group
Location
London, United Kingdom
Employment Type
Contract, Work From Home
Contract Rate
Up to £700 per day
Define data standards, modelling practices and governance frameworks. Work closely with Data Engineers, Solution Architects and business stakeholders. Support migration from legacy systems to modern cloud-based data platforms. Perform source-to-target mapping and data lineage analysis. Define metadata, data quality and governance requirements. Produce architecture ...

Solutions Architect - HYBRID / REMOTE - 11852SJR

Hiring Organisation
Proactive Appointments
Location
Guildford, Surrey, UK
Employment Type
Full-time
Provide architectural assurance, risk management and technical leadership. Influence senior stakeholders and communicate complex technical decisions effectively. Support technology strategy, platform modernisation and legacy system retirement. Lead technology evaluations, RFI/RFP processes and supplier assurance. Mentor and provide technical leadership to other architects. Key experience: Senior-level ...

Senior Solution Architect & Technology Consultant (Financial Services or Insurance)

Location
Greater London, England, United Kingdom
Subject Matter Expert linking technology choices to business value for large-scale transformation programsPragmatic problem-solving mindset with experience modernizing legacy systems and translating strategy into executable outcomesLeadership skills with experience guiding distributed architecture and engineering teams to establish best practices and improve delivery performanceExcellent client-facing ...

Mid-Level Data Engineer (Python/ AWS)

Location
Belfast, Northern Ireland, United Kingdom
engineering and technology solutions for over 20 years, trusted by global brands to solve complex challenges and drive innovation. From modernising legacy systems to building cutting-edge applications, we help our clients navigate an ever-changing digital landscape with confidence and agility. We’re proud ...

Senior Software Development Engineer

Location
Greater London, England, United Kingdom
investment management with the industry’s most comprehensive cloud-native platform for institutional investors across global public and private markets. While legacy systems create risk, inefficiency, and data fragmentation, Clearwater’s single-instance, multi-tenant architecture delivers real-time data and AI-driven insights throughout the investment ...

Salesforce Technical Lead (Senior Consultant)

Hiring Organisation
Bearing Point
Location
London, UK
Employment Type
Full-time
community of practice and staying current with Salesforce platform evolutionProvide technical leadership across dependencies where Salesforce is integrated with multiple legacy systems, with proven ability to drive technical strategy and resolve integration challenges. Monitoring and troubleshooting: ability to implement monitoring, logging and proactive issue resolution across Salesforce ...