101 to 125 of 563 Legacy Systems Jobs in England

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 ...

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 ...

Oracle APEX Developer

Hiring Organisation
Frontier Resourcing Ltd
Location
London, United Kingdom
Employment Type
Contract
high-quality, well-structured datasets. Contribute to data migration and transformation activities, ensuring data accuracy, integrity, traceability and auditability throughout the transition from legacy systems. Apply security-by-design principles, including appropriate access controls, governance and logging, in line with the requirements of regulated MOD environments. Work within ...

Engineering Manager - Pro

Location
Greater London, England, United Kingdom
responsible for everything to do with the trading backend services such as the matching engine, market data gateways, internal and external APIs, margin systems and various other trading services. The team is located globally and responsibilities are split into sub-teams, working with various tech stacks. Our teams code … Lead and grow a team of 8-10 engineers owning core trading backend services, including the matching engine, market data gateways, and order entry systems Guide the team through the ongoing evolution of our trading stack, from legacy systems to their modern replacements Stay technically close ...

Principal OT Security Consultant

Location
Greater London, England, United Kingdom
guidance. Develop security measures and designs to deliver security improvements Provideexpert guidance oncommon OT cyber security challenges such assecure integration of IT/OT systems,cloudconnectedOT, remote access,protecting legacy systems,and emerging technologies). Develop and review system hardening standards, network segmentation designs, asset management ...

SAP B1 Support Consultant

Location
Greater London, England, United Kingdom
client base. In this role you will act as a resource available to assist our existing customers with new requirements to enhance their current systems and you will have the opportunity to work alongside some of the brightest minds in the ERP consulting industry! Given the location … reports using Crystal Reports and other tools available. Provide consultancy and training services for clients as required. Conduct migration support from legacy systems into SAP Business One. Liaise with fellow Implementation Consultants in providing innovative solutions to client issues on SAP B1 or associated SSP solutions. Maintain ...

Corporate Security Engineering – Engineer Role

Location
Manchester, England, United Kingdom
software platforms that power our Physical Security business partners globally, with a primary focus on operating and engineering our existing Physical Security Systems and migrating to Genetec solutions for Access Control and CCTV. You will also work with non‐Genetec solutions that serve the needs of BNY’s Corporate … ways: Provide end-to-end Engineering support for our global suite of Physical security applications. This includes: Migration to Genetec from legacy systems (e.g., C-CURE, Victor), including architecture, cutover planning, device onboarding, integrations, data/credential migrations, and stakeholder communications. Plan and execute system updates, firmware ...

Senior AI Software Engineer

Location
Greater London, England, United Kingdom
collaboration across networks, domains, and allies, while ensuring the data powering AI and advanced analytics remains trusted and protected. We don’t just defend systems; we deliver decision dominance. Our Purpose Protect what matters most by enabling organizations to operate security in the most complex and high-risk digital … improve development speed, test coverage, documentation, and reduce manual effort. Prototype quickly to de-risk ambiguous or complex problems. Ramp up fast in unfamiliar systems—map key components, ask good questions, and contribute early. Work as a guest engineer in other teams’ codebases, aligning on scope, following conventions ...

Data Engineer

Location
Greater London, England, United Kingdom
drive significant advancements in our business operations and technology landscape. Our primary goal is to transition from our current reliance on legacy systems and specialized off-the-shelf tools to a more integrated, AI-driven, and data-centric operational model. Leveraging insights and guidance from our other … efficient, data-driven organization. About the role We’re looking for a Data Engineer who can own the journey of data from source systems to decision-ready outputs. You’ll build and maintain pipelines, model data, stand up dashboards, and integrate systems via APIs. In a team this ...

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 ...

Software Engineer (Mid-Level)

Location
West Midlands, England, United Kingdom
product management, customer acquisition, ordering and fulfilment. Bravissimo is in the middle of a major digital transformation programme, with plans to transition our legacy .NET estate to new service-based architectures. We're evolving towards a full-stack engineering environment, with TypeScript, Node.js, React … Contribute to event-driven and API-led architectures. Troubleshoot production issues and implement sustainable solutions. Participate in the ongoing modernisation of legacy systems and platforms. Contribute to code reviews, technical discussions and continuous improvement initiatives. Participate in Agile ceremonies including sprint planning, refinement, reviews and retrospectives. Technical ...

Senior Infrastructure Engineer - Trading Technology

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 ...

Lead Infrastructure Engineer

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 … Transit Gateway, CloudFormation)Windows ServerActive DirectoryNetworking: 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 ...

Lead Technologist

Location
Luton, England, United Kingdom
Innovation Lead Job purpose summary: As Lead Technologist, you'll own the technical direction for our innovation product portfolio, leading development of operational intelligence systems, real-time monitoring tools, decision-support platforms and customer-facing experiences. Working embedded with operational, data science, and commercial stakeholders, you'll translate complex … requirements into production-ready systems that drive efficiency, safety, and service quality in a live operational environment. Key responsibilities and accountabilities: Drive technical architecture across the product pipeline - from real-time data processing and predictive analytics through to automated operations and intelligent alerting. Lead delivery of production ML/ ...

Domain Expert - Data Governance, Stewardship & Information Management

Location
Greater London, England, United Kingdom
make their data usable, governed, secure, discoverable,high-qualityand accountable. It is particularly relevant in sectors where data is fragmented across legacy systems, suppliers, operational silos, secureenvironmentsor regulated business processes. Yourspecialismsshould cover data governance, master data management strategy, data quality, data ownership, metadata, information management … primes, aerospace, aviation, space, secureengineeringor complex supply-chain data environments. Financial services, insurance, healthcare,telecomsor other data-intensive regulated sectors. Organisations with large legacy estates, fragmented data ownership, complex supplierecosystemsor high audit/regulatory scrutiny. Desirable experience Knowledge of DAMA-DMBOK, DCAM, EDM Council ...

Senior Enterprise Architect – Telecoms

Location
City Of London, England, United Kingdom
management activities with internal and external stakeholders. Lead the design of scalable, modular, and resilient BSS/OSS solutions, integrating with legacy systems and modern platforms. Oversee solution architecture workstreams across multiple delivery teams and ensure consistency with target state architecture. Translate business and operational requirements into ...

AI/Data Architect

Hiring Organisation
Anson Mccade
Location
Central London, London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£85,000
across modern cloud environments. Develop conceptual, logical and physical data models, including dimensional and relational modelling. Integrate modern cloud platforms with legacy systems to enable seamless data access and reporting. Establish architecture standards covering security, governance, scalability, performance and cost optimisation. Lead technical design, architecture governance ...

Python Software Engineer - 12 Month FTC

Location
Woking, England, United Kingdom
work closely with engineers, product teams and business stakeholders to develop scalable Python services, APIs and data solutions that replace legacy systems and improve the flow of information across the business. This role offers the opportunity to make a tangible impact on a high-profile transformation programme ...

Experienced Product Engineer - Full Stack

Location
Greater London, England, United Kingdom
basic experience and willingness to learn required) What you'll gain The opportunity to shape products from an early stage rather than maintain legacy systems. Exposure to a unique combination of software engineering, science, AI and data platforms. Opportunities to grow into technical leadership, architecture or people leadership ...

Systems Accountant

Location
City Of London, England, United Kingdom
unable to complete this application due to a disability, contact this employer to ask for an accommodation or an alternative application process. Systems Accountant Full Time Little Russell St, London, City of, GB COMPANY OVERVIEW Markmonitor Group, is a premier provider of enterprise domain portfolio management, brand protection, domain … footprint involves cross-border transactions, digital services delivery, intellectual property management, and compliance with diverse regulatory and tax regimes worldwide. JOB SUMMARY The Group Systems Accountant is the single accountable owner of Microsoft Dynamics 365 Finance across Markmonitor Inc. and the Com Laude Group. The role sits ...

Head of AI Solutions, COO Technology - MD (C16)

Location
Greater London, England, United Kingdom
Technology portfolio; translate business intent into a concrete, milestone-driven execution roadmap with measurable outcomes* Develop architecture blueprints and end-to-end systems design for Generative AI and agentic workflows across diverse operational domains* Build the shared AI platform — reusable models, tooling, guardrails, evaluation frameworks, and accelerators — that reduces … prompt engineering, retrieval-augmented generation (RAG), vector database design, and evaluation methodologies. You understand how models behave in production, not just in demos.* Agentic Systems Design:Proven experience designing and deploying multi-agent architectures and orchestration frameworks (e.g., LangGraph, AutoGen, CrewAI); tool-use patterns, human-in-the-loop workflows ...

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 ...