1 to 25 of 113 Legacy Systems Jobs in the South East

Enterprise Architect

Hiring Organisation
Awin
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
Competitive salary
Governance: Develop, maintain, and realize architecture standards and principles that guide technology decisions across the organization. Technology Oversight: Provide strategic oversight of Awin’s systems, platforms, and infrastructure, including legacy systems and cloud-native environments. Integration Leadership: Lead architecture reviews and integration efforts across domains such … experts to ensure architectural consistency and scalability. Strategic Planning: Contribute to long-term planning for platform evolution, including the sunsetting of legacy systems and migration to unified platforms. Mentorship & Enablement: Support solution architects and engineering teams by providing architectural guidance and fostering a culture of technical excellence. ...

Lead PHP Developer Tech for Good}

Hiring Organisation
Ernest Gordon Recruitment Limited
Location
Enfield, Middlesex, England, United Kingdom
Employment Type
Full-Time
Salary
£70,000 - £80,000 per annum
direct impact on millions of lives? You'll take the lead in defining the technical future, steering the transition from legacy PHP systems to a modern, scalable platform built with Laravel, InertiaJS, and Vue 3. With solid groundwork already in place, you'll have real freedom … next generation of our products. This role would suit an experienced PHP developer who's ready to step beyond maintaining legacy systems and help build something modern, scalable, and genuinely impactful. If you're excited by the idea of using your technical skills to support a Tech ...

PHP Developer MedTech}

Hiring Organisation
Ernest Gordon Recruitment Limited
Location
Enfield, Middlesex, England, United Kingdom
Employment Type
Full-Time
Salary
£70,000 - £80,000 per annum
sole complex and technical challenges. You'll take the lead in defining the technical future, steering the transition from legacy PHP systems to a modern, scalable platform built with Laravel, InertiaJS, and Vue 3. With solid groundwork already in place, you'll have real freedom to shape … next generation of our products. This role would suit an experienced PHP developer who's ready to step beyond maintaining legacy systems and help build something modern, scalable, and genuinely impactful. If you're excited by the idea of using your technical skills to support a Tech ...

Data Migration Engineer

Hiring Organisation
Kinetech Recruitment
Location
Milton Keynes, Buckinghamshire, South East, United Kingdom
Employment Type
Permanent, Work From Home
fast-growing, acquisition-led organisation. Your core mission will be to migrate operational (CRM) and in time, finance data from multiple legacy systems into Microsoft Dynamics, repeatedly, reliably, and under pressure. You will work across: Bespoke, undocumented, and at times, home-grown systems SaaS platforms (e.g. … with minimal hand-holding, in a demanding BAU + project environment. What Youll Be Doing For each acquired business, analyse legacy source systems (often undocumented) Understand and interrogate data models at source and target (D365/Dynamics) Perform source-to-target mapping Extract, cleanse, transform, and load ...

Finance Systems Lead

Hiring Organisation
Tandem Talent Ltd
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
Competitive salary
Join Our Team as a Finance Systems Lead at Foster + Partners Foster + Partners is one of the world’s most innovative and respected studios for sustainable architecture, urbanism, engineering, and design. Founded by Norman Foster in 1967, we’ve grown into a global community of over … expand, we’re implementing a new ERP platform to support the next chapter of our growth — and we’re looking for a skilled Finance Systems Lead to help shape that future. About the role As our Finance Systems Lead , you will own and optimise F+P’s financial systems ...

senior software engineer

Hiring Organisation
V3 Recruitment
Location
Portsmouth, Hampshire, South East, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£50,000
will be asked to shape epics and tickets yourself - always aligned with the CTO's direction Build new features, fix problems in old systems and keep everything running fast and reliable Work on a mix of greenfield projects and legacy systems - both matter and both need … your skills without arrogance Confident resilient pragmatic and results-driven Clear judgement and able to balance speed with quality Experienced in building new systems and fixing legacy Keeps calm under pressure and still delivers Raises the bar for those around them by example Working Style Execute ...

Full Stack Developer - Python, Java or .Net

Hiring Organisation
Hays Specialist Recruitment Limited
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
Salary negotiable
scalable services using Python as the primary backend language, while supporting existing services built in Java and .NET. Maintain and enhance legacy systems using Oracle SQL PL. Implement Test-Driven Development (TDD) practices, ensuring automated tests are written prior to code development. Work with complex data challenges ...

Senior Business Intelligence Developer

Hiring Organisation
Tenth Revolution Group
Location
Portsmouth, Hampshire, United Kingdom
Employment Type
Permanent
Salary
£55000 - £65000/annum
dashboards and reports to provide actionable insights. Designing and developing robust ETL solutions using Azure Data Factory and related services. Managing integrations between internal systems and external partners. Supporting data migration from legacy systems into the new platform. Collaborating with technical and non-technical stakeholders ...

SAP Specialist

Hiring Organisation
Quest Global Engineering Limited
Location
East Grinstead, West Sussex, South East, United Kingdom
Employment Type
Contract, Work From Home
Contract Rate
From £24 to £36 per hour based on the skill set match and experience
Ensure smooth integration of the MM/P2P module with other SAP modules ( FI/CO, SD, PP, WM/EWM, PS ) and external systems ( SAP Ariba, OpenText VIM, legacy systems ). Testing & Quality Assurance: Prepare test plans and scripts, perform unit testing, functional integration testing ...

Solutions Architect

Hiring Organisation
Trust In Soda
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£700 - £748 per day
Ideally S-100 but S-57 at a minimum. Cloud & Legacy Migration Successfully contributed to the migration of critical legacy systems to cloud-based infrastructure. Working knowledge of a major cloud provider (e.g., AWS, Azure, or GCP) and familiarity with Infrastructure as Code (IaC) tools … like Terraform or CloudFormation. Experience working on large, complex codebases and legacy systems. Nice to have skills. Knowledge of S-101 (ENC) and other S-100 product specifications Experience with chart compilation tools or GIS platforms used for hydrographic data processing. Experience with Azure DevOps and CI/ ...

Senior Software Engineer - Python, ML & AI Systems

Hiring Organisation
Cornspring
Location
Southampton, UK
Employment Type
Full-time
finance. Our clients operate at the highest levels of global markets, managing billions in assets, yet they remain constrained by legacy systems that are slow, fragmented, and outdated. Cornspring is redefining Family Office services by applying state-of-the-art generative AI and Large Language Models … looking for an exceptional Senior Software Engineer with a strong ML and LLM focus, and the ability to build production-grade AI systems end-to-end. This is a pivotal role in which you will shape core system architecture, design and deploy AI-driven features, and work hands ...

Senior Software Engineer - Python, ML & AI Systems

Hiring Organisation
Cornspring
Location
Maidstone, Kent, UK
Employment Type
Full-time
finance. Our clients operate at the highest levels of global markets, managing billions in assets, yet they remain constrained by legacy systems that are slow, fragmented, and outdated. Cornspring is redefining Family Office services by applying state-of-the-art generative AI and Large Language Models … looking for an exceptional Senior Software Engineer with a strong ML and LLM focus, and the ability to build production-grade AI systems end-to-end. This is a pivotal role in which you will shape core system architecture, design and deploy AI-driven features, and work hands ...

Senior Software Engineer - Python, ML & AI Systems

Hiring Organisation
Cornspring
Location
Woking, Surrey, UK
Employment Type
Full-time
finance. Our clients operate at the highest levels of global markets, managing billions in assets, yet they remain constrained by legacy systems that are slow, fragmented, and outdated. Cornspring is redefining Family Office services by applying state-of-the-art generative AI and Large Language Models … looking for an exceptional Senior Software Engineer with a strong ML and LLM focus, and the ability to build production-grade AI systems end-to-end. This is a pivotal role in which you will shape core system architecture, design and deploy AI-driven features, and work hands ...

Senior Software Engineer - Python, ML & AI Systems

Hiring Organisation
Cornspring
Location
Portsmouth, Hampshire, UK
Employment Type
Full-time
finance. Our clients operate at the highest levels of global markets, managing billions in assets, yet they remain constrained by legacy systems that are slow, fragmented, and outdated. Cornspring is redefining Family Office services by applying state-of-the-art generative AI and Large Language Models … looking for an exceptional Senior Software Engineer with a strong ML and LLM focus, and the ability to build production-grade AI systems end-to-end. This is a pivotal role in which you will shape core system architecture, design and deploy AI-driven features, and work hands ...

Staff Software Engineer

Hiring Organisation
Definely
Location
Southampton, UK
Employment Type
Full-time
most complex challenges in our stack. This includes modernising and scaling our .NET backend services, improving system reliability and observability, and designing modular systems that power AI-driven document workflows deeply integrated into Microsoft Word and the broader Microsoft ecosystem. This role is ideal for someone who thrives … designing systems at scale, leading cross functional technical initiatives, and mentoring teams through change. You will have significant influence over technical direction, infrastructure choices, and how we evolve from legacy patterns to a modern, cloud-native architecture. What you'll do: Technical Leadership & Strategy Define and drive ...

Staff Software Engineer

Hiring Organisation
Definely
Location
Slough, Berkshire, UK
Employment Type
Full-time
most complex challenges in our stack. This includes modernising and scaling our .NET backend services, improving system reliability and observability, and designing modular systems that power AI-driven document workflows deeply integrated into Microsoft Word and the broader Microsoft ecosystem. This role is ideal for someone who thrives … designing systems at scale, leading cross functional technical initiatives, and mentoring teams through change. You will have significant influence over technical direction, infrastructure choices, and how we evolve from legacy patterns to a modern, cloud-native architecture. What you'll do: Technical Leadership & Strategy Define and drive ...

Staff Software Engineer

Hiring Organisation
Definely
Location
Guildford, Surrey, UK
Employment Type
Full-time
most complex challenges in our stack. This includes modernising and scaling our .NET backend services, improving system reliability and observability, and designing modular systems that power AI-driven document workflows deeply integrated into Microsoft Word and the broader Microsoft ecosystem. This role is ideal for someone who thrives … designing systems at scale, leading cross functional technical initiatives, and mentoring teams through change. You will have significant influence over technical direction, infrastructure choices, and how we evolve from legacy patterns to a modern, cloud-native architecture. What you'll do: Technical Leadership & Strategy Define and drive ...

Staff Software Engineer

Hiring Organisation
Definely
Location
Maidstone, Kent, UK
Employment Type
Full-time
most complex challenges in our stack. This includes modernising and scaling our .NET backend services, improving system reliability and observability, and designing modular systems that power AI-driven document workflows deeply integrated into Microsoft Word and the broader Microsoft ecosystem. This role is ideal for someone who thrives … designing systems at scale, leading cross functional technical initiatives, and mentoring teams through change. You will have significant influence over technical direction, infrastructure choices, and how we evolve from legacy patterns to a modern, cloud-native architecture. What you'll do: Technical Leadership & Strategy Define and drive ...

Senior DevOps Engineer

Hiring Organisation
Lloyds Banking Group
Location
Southampton, UK
Employment Type
Full-time
fostering a culture of continuous improvement and knowledge sharing. The Core Banking Platform team work together to curate and deliver the future core banking systems for the UK's largest retail bank such as setting up a new Cloud native Microservices platform that will function as the epicenter … tools and Cloud technologies. Day to day, you will: * Contribute to the provisioning of data products to support an exit from legacy systems to a key strategic platform * Design and Architectural Planning: Lead the design and architectural planning of our infrastructure, focusing on scalability, reliability, and performance. ...

Senior DevOps Engineer

Hiring Organisation
Lloyds Banking Group
Location
Basingstoke, Hampshire, UK
Employment Type
Full-time
fostering a culture of continuous improvement and knowledge sharing. The Core Banking Platform team work together to curate and deliver the future core banking systems for the UK's largest retail bank such as setting up a new Cloud native Microservices platform that will function as the epicenter … tools and Cloud technologies. Day to day, you will: * Contribute to the provisioning of data products to support an exit from legacy systems to a key strategic platform * Design and Architectural Planning: Lead the design and architectural planning of our infrastructure, focusing on scalability, reliability, and performance. ...

Senior DevOps Engineer

Hiring Organisation
Lloyds Banking Group
Location
Crawley, West Sussex, UK
Employment Type
Full-time
fostering a culture of continuous improvement and knowledge sharing. The Core Banking Platform team work together to curate and deliver the future core banking systems for the UK's largest retail bank such as setting up a new Cloud native Microservices platform that will function as the epicenter … tools and Cloud technologies. Day to day, you will: * Contribute to the provisioning of data products to support an exit from legacy systems to a key strategic platform * Design and Architectural Planning: Lead the design and architectural planning of our infrastructure, focusing on scalability, reliability, and performance. ...

Lead Data Engineer - Microsoft Fabric - Hybrid - £75k

Hiring Organisation
Tenth Revolution Group
Location
Winchester, Hampshire, United Kingdom
Employment Type
Permanent
Salary
£65000 - £75000/annum
deliver cutting-edge cloud data platforms for our clients. In this role, you'll be at the heart of transforming legacy systems into scalable, production-grade architectures using Microsoft Fabric. You'll build complex ingestion pipelines, craft metadata-driven transformation layers, optimise data workflows, and deliver high ...

Senior Product Manager

Hiring Organisation
Incite Insight
Location
Richmond, Surrey, England, United Kingdom
Employment Type
Full-Time
Salary
£80,000 - £90,000 per annum
domain with product leadership of our wider platform transformation. In your vertical, you’ll work closely with a squad to rebuild and evolve critical systems (for example, order generation), ensuring they’re robust, scalable, and deliver clear business and customer outcomes. At the same time, you’ll play … progress with visible customer and commercial value. This role would suit a PM who thrives on complexity, enjoys connecting the dots across teams and systems, and has the communication skills to simplify technical change for diverse stakeholders. It’s not about being the most technical person in the room ...

PERL Software Developer

Hiring Organisation
Guidant Global
Location
Stevenage, Hertfordshire, South East, United Kingdom
Employment Type
Contract
Contract Rate
Up to £77 per hour ; (Umbrella)
critical projects. Key Responsibilities: Code technical publication stylesheets using PERL language Develop database solutions to store and retrieve company information Install and configure information systems to ensure functionality Analysing, planning, and defining data architecture framework, including security, reference data, metadata, and master data Migrate data from legacy systems to new solutions Improve system performance by conducting tests, troubleshooting and integrating new elements Optimize new and current database systems Define security and backup procedures Collaborating with other teams within the organisation to devise and implement data strategies, build models, and assess shareholder needs ...

Access Database Migration Engineer SQL & SharePoint

Hiring Organisation
Salt Search
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£450 per day
critical assignment for a Database Migration Engineer. This role sits within their Technology and Digital Services function and will lead the conversion of legacy Microsoft Access databases into modern data platforms built on SQL Server and SharePoint. You will take ownership of end-to-end migration activity, working … processes, or wider Microsoft data/Power Platform tooling This assignment forms part of a wider modernisation programme aimed at replacing legacy systems with secure, maintainable environments. You will be joining at a critical point, with scope to directly influence the success and pace of delivery. ...