151 to 175 of 662 Legacy Systems Jobs in the UK

ERP Devleoper

Location
Great Torrington, England, United Kingdom
support combined with a world‐class standard of innovation. About the Role Are you an ERP developer who enjoys turning complex business challenges into systems that make people’s working lives easier? We’re looking for an ERP Developer to play a central role in the development and Group … opportunity to shape how an ambitious international engineering business uses its data and systems. You’ll work closely with the Group IT & Business Systems Manager, the IT, senior leaders, process owners, and colleagues across the Group to develop functionality, connect business applications, and replace legacy processes with ...

Java Developer Kafka API - Tech Consultancy

Hiring Organisation
Client Server
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£90,000
range of transformational projects for clients, mainly within the financial services sector and with a focus on Kafka messaging, migrating legacy systems to AWS and introducing CI/CD pipelines and cloud deployments. You'll join a collaborative team with a focus on engineering best practice … continuous improvement of client systems; you will have lots of business and client exposure and continual learning and development opportunities. Location/WFH: There's a hybrid work from home policy with three days a week in the London, City office (or at client sites), you'll join ...

Control and Automation Engineer

Hiring Organisation
ReeVR
Location
Christchurch, Dorset, South West, United Kingdom
Employment Type
Permanent
Salary
£40,000
Employment type: Permanent, Full time A specialist engineering manufacturer is looking for a Control and Automation Engineer to develop, improve and support the control systems used across its expanding product range. This is a varied engineering role combining controls hardware, software development, user-interface design and system integration. … support existing and legacy control systems. The company is open-minded regarding your technical background. You could come from PLC automation, embedded systems, industrial software or a combination of these areas. The role will include: Designing control and automation systems for new products Developing software applications ...

Pricing Systems Lead: Change & Controls

Location
Bournemouth, England, United Kingdom
Emerald Group is seeking a price governance professional responsible for ensuring pricing and underwriting systems are robust and well controlled. You will lead on pricing change delivery across Radar and legacy systems and resolve incidents when systems fail. You will drive testing strategies, ensure requirements ...

Lead Software Engineer

Hiring Organisation
StepChange Debt Charity
Location
Leeds, West Yorkshire, Yorkshire, United Kingdom
Employment Type
Permanent
delivery of scalable, cloud-first applications that make a real difference to people's lives? Excited by the challenge of modernising legacy systems while driving engineering excellence across Agile teams? As our Lead Software Engineer , you'll play a pivotal role in evolving StepChange's digital capability … Agile environment, balancing strategic thinking with hands-on technical delivery. Whether you're mentoring engineers, leading architectural decisions, improving development processes, or modernising legacy applications built on Angular and .NET, you'll play a key role in strengthening engineering capability and helping us deliver innovative digital solutions that ...

Forward Deployed Software Engineer London

Location
Greater London, England, United Kingdom
latest AI tools and models, partner technical teams, and early capability previews that the wider market does not. We are deploying production AI systems into the world's most complex organisations across Financial Services, Energy, and Healthcare. We exist to make AI a genuine competitive advantage for our clients … engagements at some of the most complex organisations in the UK. Technically, commercially, and in the room with engineering leaders who have built serious systems and are not easily impressed. What You Will Do Lead engagements that transform how enterprise engineering organisations build software - from discovery and assessment through ...

Principal Software Engineer (Hybrid)

Hiring Organisation
Hackajob Ltd
Location
South West London, London, United Kingdom
Employment Type
Permanent
shipped production-grade platforms: the reusable foundations, tools, infrastructure, and workflows that help other teams shift faster and more reliably Taken AI and agentic systems from prototype to production, with a strong understanding of infrastructure, authentication, and observability Delivered on high-stakes consulting engagements across multiple language paradigms, stacks … record of understanding, assessing, and embracing new tooling and trends within the software industry Built or integrated AI/ML features into products and systems, including recommendation engines, NLP, computer vision, predictive analytics, RAG pipelines, and agents Successfully led modernisation and replatforming efforts to align legacy systems ...

Embedded Engineer - Electronic Security systems

Hiring Organisation
SSR Personnel
Location
London, UK
Employment Type
Full-time
Physical Electronic Security Systems Genetec EngineerSalary Range: CompetitiveLocation: City of LondonThe RoleWe are seeking an experienced Genetec security engineer to play a pivotal role within a client team based in the City of London. You will oversee and drive the successful mobilisation and delivery of access control and CCTV … projects across the client's portfolio. This position will involve supporting enterprise-level application implementations, managing migrations from legacy systems, and providing expert troubleshooting. The ideal candidate must excel in multitasking and thrive in a fast-paced, dynamic environment. This is an on-site role requiring ...

Senior PHP Developer

Location
Basingstoke, England, United Kingdom
team at Reassured. You’ll play a key role in evolving our internal CRM platform, taking ownership of complex features and helping shape the systems that support a fast-paced, highly regulated business. Working within a collaborative Scrum team, you’ll balance hands-on development with technical leadership, influencing … driving high-quality, scalable solutions across the team. What you’ll be doing Support in the design and implementation of robust, scalable backend systems using PHP (Laravel/CakePHP). Take ownership of features from concept through design, development, testing, and deployment. Improve and refactor legacy systems ...

RevOps Data Team Lead

Location
Greater London, England, United Kingdom
data‐platform transformation by translating commercial requirements into clear analytical and reporting specifications. Help harmonize data and reporting across legacy systems, products, regions, and acquired businesses. Promote appropriate controls for data access, privacy, confidentiality, and responsible handling of commercial information. Stakeholder Partnership Act as the primary analytics … pipeline, conversion, retention, NRR/GRR, churn, expansion, pricing, and forecast accuracy Experience improving data quality, metric governance, reporting controls, and documentation across multiple systems or business units Strong stakeholder‐management skills, with the confidence to challenge assumptions and influence senior commercial leaders Ability to operate effectively ...

Senior Technical Lead

Hiring Organisation
Damia Group Ltd
Location
United Kingdom
Employment Type
Contract
Contract Rate
£550 - £650 per day
major technical issues. Drive improvements in security, resilience, CI/CD, automation, testing, observability and reuse. Maintain oversight of technical risk, debt, legacy technology and application lifecycle. Develop technical improvement and modernisation roadmaps. Improve collaboration between Build and Run teams. Coach and mentor engineers, creating stronger technical ownership … across multiple applications or engineering teams. Strong understanding of CI/CD, automation, secure development, testing and production services. Experience with legacy systems, technical debt and modernisation. Experience across both development and live-service/operational environments. Strong technical risk management and problem-solving skills. Excellent stakeholder ...

RevOps Data Team Lead

Location
Southampton, England, United Kingdom
data-platform transformation by translating commercial requirements into clear analytical and reporting specifications. Help harmonize data and reporting across legacy systems, products, regions, and acquired businesses. Promote appropriate controls for data access, privacy, confidentiality, and responsible handling of commercial information. Stakeholder Partnership Act as the primary analytics … pipeline, conversion, retention, NRR/GRR, churn, expansion, pricing, and forecast accuracy Experience improving data quality, metric governance, reporting controls, and documentation across multiple systems or business units Strong stakeholder-management skills, with the confidence to challenge assumptions and influence senior commercial leaders Ability to operate effectively ...

Division IT Manager

Location
Sidcup, England, United Kingdom
/20 prioritization discipline ERP Modernization Leadership (Global Accountability) Lead the global Acumatica rollout across all sites Govern ERP standardization, eliminating: legacy systems, site-specific deviations Ensure ERP becomes: Single source of truth for core business processes Foundation for data and analytics Supervise execution through: Data/… reporting framework Lead the design and evolution of the divisional data platform, ensuring: Integration of data across ERP (Acumatica), supply chain, and shop floor systems Elimination of siloed and spreadsheet-based reporting Creation of a single, reliable data foundation for decision making Drive adoption and standardization of key technologies ...

Senior Business Analyst - AI

Hiring Organisation
scrumconnect ltd
Location
Newcastle upon Tyne, UK
Employment Type
Full-time
technical delivery for a Generative AI platform for a UK government department. This role involves eliciting and translating complex requirements - spanning Legacy systems, multi-cloud integration, and Responsible AI constraints - into clear, actionable specifications that engineering, product, and policy teams can build against. Key Responsibilities Requirements Elicitation … they were. Required Skills & Experience Demonstrable experience as a Business Analyst on complex, technical digital delivery programmes, ideally involving data-intensive or AI-assisted systems Strong requirements elicitation, process mapping, and gap analysis skills, with experience producing clear, unambiguous documentation Experience writing user stories and acceptance criteria within ...

Software Engineering Lead

Hiring Organisation
Willis Towers Watson
Location
London, UK
Employment Type
Full-time
release practicesOversee database and schema evolution practices - migrations, data integrity, and performance - in partnership with platform and infrastructure teamsLead incident response for backend-owned systems - triage, escalation, post-incident reviews, and runbook qualityMentor engineers on PHP (Yii/Yii2), Go, Security, Performance and Optimisation - raising the bar through design … relevant to your squad - backend, frontend, mobile, quality, or platform operations - with solid breadth across design, build, test, and runTrack record of owning production systems end-to-end: implementation, rollout, monitoring, incident response, and follow-upExperience leading technical delivery on complex, ambiguous initiatives involving multiple engineers, dependencies, or teamsStrong ...

Head of Infrastructure - Market making

Hiring Organisation
Quant Capital
Location
London, UK
Employment Type
Full-time
strategy, delivery, and scale across low-latency trading systems. This hire will drive a major AWS migration, build greenfield environments, modernise legacy systems, and shape the long-term engineering roadmap. You'll lead a small but senior infrastructure function with real autonomy and impact. The RoleOwn infrastructure … Direct Connect, Transit Gateway, CloudFormation)Networking: BGP, OSPF, MPLS, VLANs, VPNs, SD-WANFirewalls and network security (Cisco ASA, Fortinet or similar)Linux and Windows systems engineeringMicrosoft services and identity (AD/Entra ID)CI/CD (GitLab CI or similar)IaC and automation (CloudFormation, Ansible, Terraform)Monitoring/Observability ...

Director of Engineering

Location
City Of London, England, United Kingdom
assurance of delivery quality. Specific responsibilities are as follows: Engineering Leadership & Delivery Public-facing web platforms, customer-focused channels and digital services. Internal business systems and integrations. CRM and Dynamics-based solutions. Ensure predictable, high-quality delivery against agreed roadmaps and priorities. Balance pace, quality, and sustainability … solutions. Track record of improving engineering delivery, quality, and reliability. Familiarity with cloud-based platforms and modern integration patterns. Experience modernising legacy systems pragmatically. Proven experience leading continuous improvement initiatives across a complex organisation. Experience working in complex, regulated, or mission-critical environments. Strong analytical and problem ...

Edinburgh Technology Analyst Graduate Programme 2027 - 2028

Location
City of Edinburgh, Scotland, United Kingdom
knowledge on the job. Technology Exposure: Depending on your specific project, you’ll get exposure to a wide range of different technologies and systems and receive training to understand how to use as well as help implement them. Certifications: Weinvest more than $1 billion each year in continuous learning … supporting our client’s digital transformation, by defining business and technical requirements, mapping critical data and processes, guiding the migration from legacy systems to modern platforms, and decommissioning outdated infrastructure - improving efficiency, reducing costs, and securing long-term operational resilience. Where you take your career after ...

Finance Strategic Transformation Programme - Data Migration Lead

Hiring Organisation
Arup
Location
London, UK
Employment Type
Full-time
Migration Lead, you will be responsible for leading the end-to-end migration of finance data, ensuring a successful transition from legacy systems to Oracle Fusion. Working closely with Finance, Digital Technology, business stakeholders, and implementation partners, you will oversee migration planning, data quality, testing, reconciliation, cutover … this drives our excellence. Guided by our values and alignment with the UN Sustainable Development Goals, we create and contribute to equitable spaces and systems, while cultivating a sense of belonging for all. Our internal employee networks support our inclusive culture: from race, ethnicity and cross-cultural working ...

Backend Developer (Python)

Location
City Of London, England, United Kingdom
Prometheus, Grafana or similar Production support and troubleshooting Agile delivery experience Desirable Financial Services/Capital Markets experience CI/CD and DevOps Legacy system modernisation Experience supporting critical production platforms We're looking for a hands-on engineer with strong problem-solving skills and a focus ...

Backend Developer (Python)

Hiring Organisation
Advanced Resource Managers (A.R.M.)
Location
London, UK
Employment Type
Full-time
OpenShift Prometheus, Grafana or similar Production support and troubleshooting Agile delivery experienceDesirable Financial Services/Capital Markets experience CI/CD and DevOps Legacy system modernisation Experience supporting critical production platformsWe're looking for a hands-on engineer with strong problem-solving skills and a focus on code ...

Backend Developer (Python)

Hiring Organisation
ARM
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£550 - £650/day Inside IR35
Prometheus, Grafana or similar Production support and troubleshooting Agile delivery experience Desirable Financial Services/Capital Markets experience CI/CD and DevOps Legacy system modernisation Experience supporting critical production platforms We're looking for a hands-on engineer with strong problem-solving skills and a focus ...

Senior Data Engineer SQL Snowflake - Finance

Hiring Organisation
Client Server
Location
London, UK
Employment Type
Full-time
play a key role in shaping a new Snowflake based data platform, influencing architecture and technology choices while modernising legacy systems and migrating them to the new platform. Collaborating closely with stakeholders and data owners, you'll turn business requirements into robust solutions, troubleshoot complex data challenges ...

Forward Deployed Engineer (FDE): United Kingdom

Location
United Kingdom
redesigning their SDLC — code review, requirements, testing, documentation, and governance. From there, the work expands: co-building agentic applications and modernizing legacy systems on the Claude developer platform, and partnering with business stakeholders to deploy agents into core operations like sales, customer service, and finance. ...

Technical Architect

Location
Greater London, England, United Kingdom
Authority (TDA) forums Translate business and user needs into scalable, secure and standards-compliant technical solutions Conduct AS-IS assessments of legacy systems and define TO-BE target architectures and transition roadmaps Champion GDS Service Standards, Government Technology Code of Practice (TCoP) and secure-by-design principles ...