76 to 100 of 227 Legacy Systems Jobs in the UK

Product Owner

Hiring Organisation
Salt
Location
London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£45,000
candidates worldwide through digital products, English teaching, assessments and online learning services. The role offers the chance to take ownership of global digital systems and platforms, drive continuous improvement, support product growth across international markets and play a key part in shaping user-focused digital services within a complex … high-profile environment. This is a senior-level role focused on managing global English systems and digital capabilities from an end-to-end lifecycle perspective. The successful candidate will support the continuous improvement of digital products, keep stakeholders informed on product development, promote product uptake, represent users throughout ...

Java Developer (SC Cleared) | Inside IR35 | up to £550 per day | 1 DAY IN HULL PER WEEK

Hiring Organisation
Solirius Limited
Location
Hull, Yorkshire, United Kingdom
Employment Type
Contract
Contract Rate
GBP 550 Daily
enable secure, efficient, and trusted flows of data across the Criminal Justice System (CJS), directly addressing the challenges of fragmented Legacy systems and identity resolution. As a Software Engineer, you will join a small, multidisciplinary pathfinder team combining digital, data, policy, and operational expertise. Your immediate focus ...

Java Developer (SC Cleared) | Inside IR35 | up to £550 per day | 1 DAY IN HULL PER WEEK

Hiring Organisation
Solirius Limited
Location
Hull, East Yorkshire, UK
Employment Type
Full-time
enable secure, efficient, and trusted flows of data across the Criminal Justice System (CJS), directly addressing the challenges of fragmented Legacy systems and identity resolution. \n As a Software Engineer, you will join a small, multidisciplinary pathfinder team combining digital, data, policy, and operational expertise. Your immediate ...

Head of Software Engineering

Hiring Organisation
VIQU IT Recruitment
Location
Cardiff, South Glamorgan, Wales, United Kingdom
Employment Type
Full-Time
Salary
£80,000 - £90,000 per annum
adoption of modern engineering standards and practices Lead and mentor a multidisciplinary team, upskilling them into new technologies Oversee migration from legacy systems to modern cloud-based platforms Work closely with data architecture teams and oversee scrum master functions Represent the organisation in architecture governance forums Build … suppliers to drive innovation Manage budgets for software development teams and infrastructure Key Requirements: Senior leadership experience in software engineering, platform architecture or enterprise systems Strong expertise in Microsoft technologies: Power Platform, Dataverse, .NET, Azure Track record of modernising legacy technology and delivering sustainable solutions Experience leading ...

Programme Manager Microsoft Dynamics 365 Finance & Operations Transformation

Hiring Organisation
Executive Recruit
Location
Leeds, West Yorkshire, Yorkshire, United Kingdom
Employment Type
Permanent
Salary
£90,000
dependencies, budgets, and delivery milestones. Drive business readiness and adoption across multiple sites, functions, and user groups. Support the transition from legacy systems and processes into the D365 F&O environment. Identify opportunities to improve business processes through better use of technology and automation. Ensure the programme ...

Oracle Fusion Techno-Functional Consultant - Finance

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
understanding application functionality and workflows. Review and approve solution designs, configuration workbooks, and test plans. Support data integration and migration from legacy systems to Oracle Cloud. Troubleshoot issues and liaise with Oracle Support as needed. Develop custom reports and dashboards using tools like BIP and OTBI. Proven ...

Senior Data Engineer

Hiring Organisation
Corecom Consulting
Location
London Area, United Kingdom
week projects covering discovery, proof of concept, and full implementation. This isn’t a role where you’ll be maintaining legacy systems — you’ll be designing and building solutions, shaping technical direction, and working closely with stakeholders to solve real business problems. What You’ll Be Doing ...

Senior Software Engineer

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
client is a global commodity trading organisation undergoing a major technology transformation focused on AI-driven engineering, operational automation and modernisation of legacy trading platforms. They are seeking a strong hands-on technologist to join a high-profile AI and agent-driven programme focused on automating support … Commodity trading, energy trading or ETRM exposure. Experience with AI/LLM tooling including LangChain, Langfuse or Claude Code. Experience modernising legacy systems and workflows. Experience with React, Next.js, PostgreSQL, MongoDB or Kafka. #J-18808-Ljbffr ...

Head of Data Engineering

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
just write clean code yourself. Bonus Experience Nice to have, but not required: Experience building new products from scratch rather than inheriting legacy systems. Sensitive datasets in regulated industries, especially telco Data cleanrooms - Google, Snowflake or equivalent Why This Opportunity Is Worth Your Time Real architectural scope ...

ERP Project Manager

Hiring Organisation
Tyréns UK Limited
Location
City Of London, England, United Kingdom
continuity Drive stakeholder engagement and change management, ensuring effective communication, training, and adoption across the business Lead the transition from legacy systems, including decommissioning and process standardisation Establish and maintain effective project governance, providing regular updates and insights to senior leadership Align business and technical stakeholders, ensuring … complex business environments Background in the AEC or professional services sector, with an understanding of project-based operations Experience working with project-based ERP systems such as Deltek, Rapport3, or similar platforms Track record of operating within mid-to-large, international organisations (500+ employees) Strong experience in vendor management ...

Senior Fabric Engineer

Hiring Organisation
Tenth Revolution Group
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£50,000 - £65,000 per annum
well underway on a major data transformation, with Microsoft Fabric at the core of its data platform, with continued migration away from legacy systems. With continued investment across Fabric, CRM (Dynamics 365), automation, this role offers a seat at the table to help shape how data is engineered … work with stakeholders to identify data gaps, translate requirements into practical solutions Comfortable working in environments that include both modern platforms, legacy systems Apply now Interviews are already underway, so if interested, apply as soon as possible. . ...

Senior C++ Programmer

Hiring Organisation
IT Search & Select
Location
Cambridge, Cambridgeshire, East Anglia, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£75,000
define how quality is engineered into the product. What Youll Bring Strong expertise in modern C++ and experience working with large, legacy systems A deep understanding of refactoring, modularisation, and architectural improvement Proven experience designing and implementing robust testing frameworks Ability to improve test coverage , introduce automated … delivery Strong communication skills and the ability to lead and mentor a team Nice to have: Experience with multithreading, performance optimisation, or low-level systems Familiarity with Linux development environments Exposure to static analysis, sanitizers, fuzzing, or property-based testing Why Join High autonomy and ownership of a mission ...

Programme Manager

Hiring Organisation
Positive Employment
Location
Lancing Business Park, Lancing, West Sussex, England, United Kingdom
Employment Type
Temporary
Salary
£400 per day
government organisation based in Lancing. A major housing provider in West Sussex is embarking on a significant transformation programme, replacing multiple legacy systems with a single, modern, cloud-hosted Housing Management System, MRI Enterprise System would be desirable. This is a high-profile enterprise programme that will … budget, governance and reporting. Lead multi-workstream delivery covering system configuration, integrations and environment management. Oversee complex data cleansing and migration from multiple legacy housing systems. Manage integrations across housing, repairs, finance, community safety and corporate platforms with Building Safety as the consistent thread. Lead testing cycles including ...

Java Tech Lead (SC Cleared) | Inside IR35 | up to £650 per day | 1 DAY IN HULL PER WEEK

Hiring Organisation
Solirius Limited
Location
Hull, Yorkshire, United Kingdom
Employment Type
Contract
Contract Rate
GBP 650 Daily
enable secure, efficient, and trusted flows of data across the Criminal Justice System (CJS), directly addressing the challenges of fragmented Legacy systems and identity resolution. As a Java Technical Lead, you will join a small, multidisciplinary pathfinder team combining digital, data, policy, and operational expertise. Initially, your … build technical alignment and reach agreements with multiple external system owners, ensuring solutions remain pragmatic and buildable. Technical Experience and Tooling API & Core Systems Integration: Experience leveraging existing APIs to connect disparate public sector or enterprise data pools (experience with Ministry of Justice or policing data services is highly ...

Java Tech Lead (SC Cleared) | Inside IR35 | up to £650 per day | 1 DAY IN HULL PER WEEK

Hiring Organisation
Solirius Limited
Location
Hull, East Yorkshire, UK
Employment Type
Full-time
enable secure, efficient, and trusted flows of data across the Criminal Justice System (CJS), directly addressing the challenges of fragmented Legacy systems and identity resolution. \n As a Java Technical Lead, you will join a small, multidisciplinary pathfinder team combining digital, data, policy, and operational expertise. Initially … reach agreements with multiple external system owners, ensuring solutions remain pragmatic and buildable. \n\n Technical Experience and Tooling \n \n \n API & Core Systems Integration: Experience leveraging existing APIs to connect disparate public sector or enterprise data pools (experience with Ministry of Justice or policing data services ...

Salesforce Engineer (Financial Services Cloud)

Hiring Organisation
Morson Edge
Location
City of London, London, United Kingdom
Employment Type
Contract
standards, contributing to solution design, and ensuring all changes are appropriately documented and controlled. You will also support integration activity between Salesforce and surrounding systems, using appropriate integration patterns to enable seamless data and process flow across the wider enterprise landscape. Strong collaboration across internal teams and external partners … Cards, DataRaptors, and Integration Procedures) will be highly advantageous, particularly in enterprise-scale implementations. Additional experience integrating Salesforce with external or legacy systems is important, along with exposure to identity and verification tools such as Onfido or Experian being a plus. Relevant Salesforce certifications, including Administrator, Platform ...

.Net Engineer

Hiring Organisation
Canada Life
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
Competitive salary
need Engineers to support the transformation and the future growth of the business, simplifying our IT architecture by removing our legacy systems and delivering new solutions providing market-leading services for our colleagues, customers and advisers. What you'll do The Engineer is responsible for the design … decision-making skills. Excellent time and self-management through effective planning & prioritisation of tasks Desirable Skills: Azure PaaS M-Files Experience with distributed systems (SOA, Microservices ...

Continuous Improvement Lead

Hiring Organisation
Hays Specialist Recruitment Limited
Location
Gloucestershire, England, United Kingdom
Employment Type
Full-Time
Salary
£58,000 - £60,000 per annum
continued digital and organisational development.Technology plays a critical role in enabling frontline services and improving efficiency across the organisation with ongoing investment in systems, infrastructure, and data-driven capabilities. The environment is complex and fast-paced, requiring individuals who can balance day-to-day operational demands with longer-term … technical teams, understanding system integrations, data flows and operational constraints, while ensuring solutions are robust, secure and scalable. Experience working with legacy systems and third-party vendors, alongside an ability to oversee testing, deployment and ongoing optimisation, will be key to success in this role. Previous experience ...

Data Engineer

Hiring Organisation
Halian Technology Limited
Location
South West London, London, United Kingdom
Employment Type
Permanent
Salary
£95,000
modern data platform from the ground up. Were working with a business in the middle of a high-impact data transformationmoving away from legacy constraints towards a scalable, cloud-first architecture. Theyre looking for a Data Engineer to take a leading role in that journey. This isnt … skills in Python and SQL Hands-on experience with Databricks, Azure, and GCP/BigQuery Proven ability to work across both legacy systems and modern cloud environments Key Skills DevOps mindset you automate wherever possible and write clean, testable code Pragmatic approach focused on delivering value without ...

Digital Business Analyst (Digital Government Transformation)

Hiring Organisation
Consulting Point
Location
England, United Kingdom
senior link between complex policy requirements and technical execution. The role demands an individual who can navigate the transition from legacy systems to agile, cloud-native environments while ensuring all outputs remain aligned with user needs and government standards. Key Responsibilities Lead multi-disciplinary Agile Scrum teams ...

Full Stack Developer - .Net

Hiring Organisation
Hays Specialist Recruitment Limited
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£400 - £410 per day
technical solutions. Nice to have: Experience working in secure or highly regulated environments. Knowledge of secure coding practices and compliance standards. Experience supporting legacy and modern hybrid systems. If you're interested in this role, click 'apply now' to forward an up-to-date copy of your ...

Senior Software Engineer

Hiring Organisation
Rise Technical Recruitment
Location
Wellington, Somerset, United Kingdom
Employment Type
Permanent
Salary
£50000 - £60000/annum Bonus + Progression + Hybrid
shaping system architecture, driving best practice, and developing robust, maintainable solutions that are relied upon by customers worldwide. You will work closely with electrical, systems, and test engineers to deliver integrated solutions, contributing across the full lifecycle from concept and design through to delivery and long term support. Backed … software architecture and design, ensuring scalable and maintainable solutions Contribute to microservice architecture and Azure based modernisation initiatives Maintain and evolve legacy systems while planning for their future development Collaborate with multidisciplinary engineering teams in an agile environment Participate in code reviews, sprint planning, and CI/ ...

Lead Product Designer

Hiring Organisation
Euphoric
Location
United Kingdom
trillion on benefits every year. It's their second-largest cost after payroll — yet the entire category is still running on legacy systems and outdated assumptions. AI-first startups have almost completely overlooked it, and incumbents, constrained by decades-old tech stacks, simply can't move fast … design. Visual craft (typography, colour, layout, hierarchy, motion) at the level of a strong brand or art director. Product design fundamentals (flows, IA, interaction, systems thinking) at the level of a lead designer at a top tier product company. One without the other doesn’t work. The profile that ...

Data Engineer Lead Role - Hybrid - Banking

Hiring Organisation
GCS
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£600 - £700/day Inside IR35
supporting modern data platform, with a particular focus on Databricks, cloud-based data engineering, and leading the migration of legacy Oracle systems into scalable, cloud-native environments. The role supports the organisation's data strategy especially on Finance and Regulatory domain by ensuring high-quality, reliable pipelines … environment management. Ensure governance, performance optimisation. Legacy Oracle Migration Leadership Lead and coordinate the migration of data assets from Oracle database systems to the modern cloud data platform. Oversee source-to-target mapping, data model redesign, and automated migration frameworks. Define strategy for retiring legacy ...

ERP Business Analyst JBLE1 NI

Hiring Organisation
Ocho
Location
Ballymena, Co. Antrim, UK
expertise across complex production, supply chain, and engineering operations. They are currently in the midst of a significant digital transformation, replacing legacy systems with Microsoft Dynamics 365 Finance & Operations. This is a business that values structured thinking, strong communication, and people who can translate complexity into clarity. … process maps, functional specifications, and configuration documentation Participate in solution design workshops with internal teams and external implementation partners Support integration mapping with manufacturing systems including production planning, BOM, shop floor control, inventory, and PLM Coordinate user acceptance testing (UAT), defect tracking, and issue resolution ...