1 to 25 of 53 Legacy Systems Jobs in the South East

Enterprise Applications Senior Developer, App Modernisation

Hiring Organisation
Jobleads-UK
Location
Oxford, England, United Kingdom
department of the University of Oxford. It plays a critical role in enabling Oxford’s research, teaching and administration by providing the digital systems, services andexpertisethat keep the University running day to day and support innovation in a rapidly evolving digital landscape. Within IT Services, Software Solutions develops,enhancesand … Enterprise Applications Team, spearheading critical application modernisation initiatives across the University’s business applications estate. You will help modernise legacy systems so that they meet current security,performanceand maintainability baselines. You will plan and lead work to upgrade legacy .NET Framework systems and custom ...

Enterprise Applications Senior Developer, App Modernisation

Hiring Organisation
University of Oxford
Location
Oxford, Oxfordshire, United Kingdom
Salary
£ 70 K
department of the University of Oxford. It plays a critical role in enabling Oxford’s research, teaching and administration by providing the digital systems, services and expertise that keep the University running day to day and support innovation in a rapidly evolving digital landscape. Within IT Services, Software Solutions … Enterprise Applications Team, spearheading critical application modernisation initiatives across the University’s business applications estate. You will help modernise legacy systems so that they meet current security, performance and maintainability baselines. You will plan and lead work to upgrade legacy .NET Framework systems ...

Senior Electronic Design Engineer - High Speed Digital

Hiring Organisation
Verso Recruitment
Location
Colchester, Essex, South East, United Kingdom
Employment Type
Permanent
Salary
£55,000
legacy designs and tackle obsolescence projects. Your innovative thinking and problem-solving skills will be at the forefront, ensuring that older systems are revitalised and continue to perform at their best. The ideal candidate will possess a strong background in hardware design engineering. Proficiency in CAD tools … deep understanding of electronic components and systems are crucial. Experience with legacy systems and obsolescence management will set you apart, demonstrating your ability to navigate and update older technologies effectively. Experience & Skills required for the Senior Electronic Design Engineer – High Speed Digital, Reading: Proven experience with ...

Collaboration Platform Engineer (M365)

Hiring Organisation
Jobleads-UK
Location
Hook, England, United Kingdom
defined in collaboration with Information Security. You’ll be at the forefront of significant work modernisation programmes as we migrate from legacy systems, educate our users on efficiencies that can be achieved through our platform and enable our wider teams to maximise their usage of M365. … knowledge repositories detailing technical designs, configuration and support guides Knowledge and Experience Significant endpoint management experience, including Intune migrations from legacy systems A proactive, motivated and enthusiastic approach to delivery A continuous improvement mindset with a user centric approach 5+ years experience managing Microsoft Intune (endpoint management ...

Finance Systems Analyst - 6 Months Contract - Sun Systems Essential

Hiring Organisation
Robertson Bell
Location
London, South East, England, United Kingdom
Employment Type
Temporary
Salary
£250 - £300 per day
experienced Finance Systems Analyst with strong Sun Systems knowledge? Do you enjoy providing hands-on systems support while helping organisations navigate large-scale transformation? Are you available at short notice for an exciting interim opportunity? A large organisation is seeking a Finance Systems Analyst to join … specialist finance systems team on an initial 6-month contract . Offering predominantly remote working with occasional travel to a North London office , this is an excellent opportunity to play a key role in maintaining critical finance systems while a major ERP implementation is underway. The key responsibilities ...

Quantitative Developer (Python/C++)

Hiring Organisation
IT Graduate Recruitment
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£50,000 - £80,000 per annum
mathematicians and researchers to tackle some of the most challenging quantitative problems in industry. This isn't another role maintaining legacy trading systems or optimising existing codebases. You'll be building the core technology from the ground up, developing sophisticated quantitative models and high-performance software that … silos, endless meetings or layers of bureaucracy. Instead, you'll work closely with experienced software engineers, quantitative researchers and founders to design and build systems that operate at the intersection of mathematics, machine learning and distributed computing. You'll own meaningful projects from day one, influence technical decisions ...

Lead AI DevOps Engineer

Hiring Organisation
Lorien
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
Salary negotiable
DevOps Engineer to join a growing engineering capability and play a central role in shaping how AI is embedded into real, production-grade software systems . This is not a traditional people-management role . Instead, you'll lead through technical depth, architectural judgement, and delivery experience by setting … capabilities are integrated into modern software platforms. If you enjoy working where architecture, APIs, DevOps, and AI meet , and you care about building systems that are secure, operable, and genuinely useful, this role offers the chance to have real impact. What you'll be doing Your focus will ...

Project Manager

Hiring Organisation
DP World
Location
Southampton, England, United Kingdom
Commercial, and Operations to coordinate both technical and business activities. The role requires strong organisational capability and the ability to manage complex dependencies across systems, teams, and delivery phases. This position is ideal for a project manager who thrives in technically complex environments, enjoys coordinating cross-functional teams … milestones, dependencies, and critical path activities. • Ensure delivery aligns with the overall programme timeline and sequencing. • Coordinate system integration activities across legacy systems, terminal operating systems, and the new billing platform. • Oversee data migration planning, execution, and validation, ensuring data integrity and completeness. • Track progress against ...

OSM Migration Service Lead

Hiring Organisation
Hackajob Ltd
Location
Farnborough, Hampshire, South East, United Kingdom
Employment Type
Permanent
engineering and technology sector. We deliver enterprise technology solutions that help government agencies, defence organisations and commercial entities modernise operations, migrate legacy systems, and transform service delivery. About the Role The OSM Migration Service Lead is a senior technical leadership position responsible for designing, planning, executing … services with business objectives and contractual obligations. Technical Architecture & Design Design target-state operational architectures incorporating modern IT infrastructure, cloud services and integrated systems Evaluate migration approaches (phased, big-bang, hybrid) and recommend optimal strategies based on risk, timeline and cost factors Ensure migrated services meet security requirements including ...

Enterprise Discovery Architect

Hiring Organisation
Jobleads-UK
Location
Maidenhead, England, United Kingdom
models, support arrangements, supplier relationships and internal capabilities. Identify gaps in documentation, governance, ownership and decision-making. Evaluate the impact of legacy systems and unsupported or obsolete technologies. Assess non-functional considerations, including resilience, scalability, availability, performance, security and maintainability. Business and Capability Analysis Understand the business … environments Enterprise applications ERP, CRM and line-of-business platforms Legacy application modernisation SaaS, COTS and low-code platforms API management and systems integration Event-driven and service-oriented architecture Data platforms, analytics and business intelligence Data governance, quality, lineage and master data Artificial intelligence, machine learning ...

Senior Analytics Engineer

Hiring Organisation
Tech 4
Location
Oxford, Oxfordshire, South East, United Kingdom
Employment Type
Permanent
Salary
£65,000
management, branching strategies, and collaboration. Strong Python scripting for data automation, orchestration, and pipeline optimisation. Working knowledge of C# for maintaining/modifying legacy Windows applications. Experience with Power BI, QuickSight, or similar tools for analytics. Adherence to ETL/data management best practices (e.g., incremental loads, error … GDPR, CCPA) and security protocols (encryption, RBAC). Agile/SCRUM practitioner with experience in offshore team collaboration. Ability to migrate legacy systems to modern cloud architectures. Anticipates issues, recommends pragmatic solutions, and writes clean, reusable code. Articulate with stakeholders, from engineers to non-technical leaders. Manages ...

Senior Analytics Engineer

Hiring Organisation
Harnham - Data & Analytics Recruitment
Location
Oxfordshire, England, United Kingdom
Employment Type
Full-Time
Salary
£60,000 - £65,000 per annum
Data modelling (Star/Snowflake Schema) NoSQL databases (e.g. Cosmos DB, MongoDB) C# Data governance and GDPR knowledge Agile/Scrum experience Legacy system migration experience Experience working with offshore teams If you are interested in the role, please apply. To follow up please message me on LinkedIn. ...

Infrastructure/Platform Architect

Hiring Organisation
Jobleads-UK
Location
Farnborough, England, United Kingdom
virtualisation solutions, containerisation strategies and orchestration platforms Design disaster recovery, business continuity and resilience architectures meeting MOD availability requirements Guide infrastructure modernisation programmes, legacy system migrations and technology refresh initiatives Ensure infrastructure designs comply with MOD security requirements, Classification Guides and defence standards Technical Leadership & Governance Lead infrastructure ...

Infrastructure Platform Architect

Hiring Organisation
Hackajob Ltd
Location
Farnborough, Hampshire, South East, United Kingdom
Employment Type
Permanent
virtualisation solutions, containerisation strategies and orchestration platforms Design disaster recovery, business continuity and resilience architectures meeting MOD availability requirements Guide infrastructure modernisation programmes, legacy system migrations and technology refresh initiatives Ensure infrastructure designs comply with MOD security requirements, Classification Guides and defence standards Technical Leadership & Governance Lead infrastructure ...

Infrastructure Platform Architect

Hiring Organisation
Jobleads-UK
Location
Farnborough, England, United Kingdom
critical workloadsArchitect virtualisation solutions, containerisation strategies and orchestration platformsDesign disaster recovery, business continuity and resilience architectures meeting MOD availability requirementsGuide infrastructure modernisation programmes, legacy system migrations and technology refresh initiativesEnsure infrastructure designs comply with MOD security requirements, Classification Guides and defence standardsTechnical Leadership & GovernanceLead infrastructure technical teams, providing ...

Lead Data Engineer

Hiring Organisation
Lorien
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
Salary negotiable
Lead Data Engineer Hands-on technical leadership building data systems that actually work We're looking for a Lead Data Engineer to join an enterprise data engineering capability and play a critical role in designing, building, and improving real-world data systems . This is not a line … engineers and adjacent roles through design decisions, code, and delivery support Improve data sharing, onboarding of new data sources, and interoperability across teams and systems Introduce and evaluate new tools, patterns, and technologies where they genuinely add value - balancing innovation with pragmatism Build robust, production-grade solutions , not proofs ...

C++ Developer

Hiring Organisation
Addition
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£600 per day
leading online gaming platforms. This is an opportunity to work on a large-scale, business-critical C++ platform, helping modernise legacy systems while supporting a major cloud migration programme. Role Overview Location: Remote, must be based in UK Package: £600 - £650pd Outside IR35 Duration: 3 months (Sept … modernisation programme. Refactor and modernise legacy components while maintaining stability and existing functionality. Build and enhance high-performance, low-latency, server-side systems supporting a live platform. Integrate platform services with AWS where required as part of the wider cloud programme. Use AI-assisted development tools, including ...

Senior Analytics Engineer

Hiring Organisation
Harnham
Location
Oxford, England, United Kingdom
using modern engineering practices Monitor, troubleshoot, and continuously improve data infrastructure Contribute to data architecture decisions and support the modernisation of legacy systems Create clear technical documentation and maintain best practices across data engineering workflows Collaborate with developers, analysts, and business teams to deliver impactful data solutions ...

Infrastructure/Platform Architect

Hiring Organisation
Jobleads-UK
Location
Farnborough, England, United Kingdom
virtualisation solutions, containerisation strategies and orchestration platforms. Design disaster recovery, business continuity and resilience architectures meeting MOD availability requirements. Guide infrastructure modernisation programmes, legacy system migrations and technology refresh initiatives. Ensure infrastructure designs comply with MOD security requirements, Classification Guides and defence standards. Technical Leadership & Governance Lead infrastructure ...

Data Engineer

Hiring Organisation
Oliver James
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£400 - £500 per day
digital infrastructure provider with 100+ sites across the continent - is looking for a Data Engineer to join a major transformation programme consolidating multiple operational systems into a single target platform. You'll be at the centre of the migration workstream: building the pipelines, transformation logic, and validation frameworks that … move data from legacy systems into the new target operating platform - working closely with the Data Workstream Lead, business SMEs, and application teams. What you'll be doing: Designing and building ETL/ingestion pipelines using Microsoft Fabric (Data Factory, Pipelines, Lakehouse, Notebooks) or equivalent Azure tooling ...

Senior Software Technical Lead

Hiring Organisation
Jobleads-UK
Location
Farnborough, England, United Kingdom
technical authority, driving software engineering excellence, improving development practices, and supporting multidisciplinary teams in delivering complex, high‐assurance systems. Working closely with software engineers, systems engineers, and project teams, you will help shape software architecture, establish engineering standards, and ensure successful delivery against technical and programme objectives. … support software engineers, helping to develop technical capability and engineering excellence. Identify skills gaps, training requirements, and future capability needs. Promote collaboration across software, systems, and wider engineering teams. Software Development & Delivery Lead software architecture design and implementation for embedded systems and user applications. Drive software verification ...

Technical Lead, Machine Learning

Hiring Organisation
LMA Recruitment
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£150,000 - £180,000 per annum
stage where their impact will be both immediate and lasting. As Technical Lead, Machine Learning , you won't be inheriting legacy systems or maintaining someone else's architecture. You'll help define the foundations of the platform itself-shaping how the product reasons, remembers, plans, and executes … have the opportunity to: Define the machine learning architecture that powers the entire product. Influence technical strategy at the highest level. Build systems from first principles rather than work within established constraints. Solve some of the hardest challenges in AI, including memory, reasoning, reliability, and real-world task execution. ...

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 ...

Lead Architect Insurance

Hiring Organisation
Deutsche Post DHL
Location
Milton Keynes, Buckinghamshire, United Kingdom
Salary
£ 70 K
maintain enterprise architecture frameworks, principles, and standards (TOGAF aligned)Lead architecture for insurance transformation programs (Claims, Underwriting, Policy Administration)Assess legacy systems and design modernization strategies, target architectures, and transition roadmapsDevelop enterprise-wide technology roadmaps aligned with business strategyDrive architecture governance, standards, and decision-making forumsProvide architectural … ITYour Profile6 - 10 years of Enterprise Architecture experienceStrong insurance domain expertise (commercial, specialty, and captive insurance)Proven experience in application transformation and legacy modernizationDeep knowledge of core insurance platforms (Claims, Underwriting, Policy Administration)Strong understanding of integration patterns (APIs, microservices, event-driven architecture)Experience with data platforms (data ...

Senior Product Owner

Hiring Organisation
Raytheon
Location
Henfield, West Sussex, United Kingdom
Salary
£ 70 K
across our software solutions portfolio. This is a critical, dual-track role where you will be responsible for carefully managing and supporting successful legacy on-premise products, while working shoulder-to-shoulder with your teams to build a clear vision for our modern cloud-based software portfolio.You will … deliver value and meet current market demands.Support the execution of total lifecycle management, including the eventual, phased sun-setting of legacy systems with immense tact and consideration for the customer impact.Work side-by-side with Product Managers, who hold primary accountability for overarching product strategy and vision ...