51 to 75 of 210 Legacy Systems Jobs in England

Software Engineer

Hiring Organisation
Reed
Location
Teesside Industrial Estate, Stockton-on-Tees, Cleveland, England, United Kingdom
Employment Type
Full-Time
Salary
£45,000 - £48,000 per annum
part of how you build, not an afterthought - from prototyping and refactoring to testing and optimisation. You’ll design and develop cloud-native systems that process real-world data at scale You’ll help drive the transition from legacy systems to modern, high-performance architectures Your … accelerate delivery Contributing to clean, maintainable, secure codebases through strong engineering practices Collaborating across teams to design, deliver, and continuously improve products Helping modernise systems and drive best practice in a fast-evolving tech environment Tech you’ll work with .NET, C#, Web APIs, Entity Framework, SQL Server/ ...

Senior Full-Stack Software Engineer

Hiring Organisation
Fruition Group
Location
Leeds, Yorkshire, United Kingdom
Employment Type
Permanent
Salary
GBP 60,000 - 70,000 Annual
organisation is evolving from a Legacy PHP platform to a modern, cloud-native, AI-enabled architecture, offering the chance to shape greenfield systems and influence engineering direction. Senior Full-Stack Software Engineer Responsibilities Design and build scalable full-stack applications using TypeScript, Node.js, and React Lead … migration from Legacy PHP systems to a modern JavaScript/TypeScript stack Develop and maintain cloud infrastructure on AWS (EKS, S3, DynamoDB) using Terraform (IaC) Build and optimise CI/CD pipelines (GitHub Actions) to enable efficient delivery Contribute to AI-enabled software development, including AI-assisted ...

Technical Programme Manager - Workstream Lead

Hiring Organisation
Experis
Location
London, United Kingdom
Employment Type
Contract
delivery flow. * Support effective agile ways of working, including planning, ceremonies, prioritisation and delivery discipline. * Manage dependencies across other SAP workstreams, legacy systems, integration points, data migration activities, and third-party suppliers. * Proactively identify, manage, and escalate risks, issues, and decisions, driving timely mitigation and resolution. Assess ...

Enterprise Architect, Adobe Private Capital

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
Experience, Digital Media, and the wider ecosystem, including complex integrations with third‐party platforms, cloud environments (AWS, Azure, Google Cloud), and legacy systems Conduct technical assessments and North Star architecture reviews for priority portfolio companies, defining current‐state, target‐state, and transition roadmaps aligned to PE value ...

London: Principal Engineer

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
understanding, assessing, and embracing new tooling and trends within the software industry Experience building or integrating AI/ML‐powered features into products or systems (e.g., recommendation engines, NLP models, computer vision, predictive analytics) Used context‐appropriate automated testing to inform software design choices and catch bugs Successfully … modernization efforts to align legacy systems with short and long‐term business needs Remedied architecture‐level concerns such as scalability, security, reliability, and performance Facilitated alignment and collaboration across technical and non‐technical stakeholders to move initiatives forward in the face of ambiguity and complexity while balancing ...

Graduate Software/Quantitative Developer

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
your career at the intersection of technology, mathematics, and finance? Join an elite global trading firm where innovation drives everything—no legacy systems, no bureaucracy, just cutting‐edge tech and world‐class mentorship. You’ll work on greenfield projects from day one, collaborating with exceptional engineers, quants … researchers to build the systems and models shaping the future of global trading. The Role Depending on your track, you will focus on engineering high-performance systems or developing sophisticated mathematical models, all while learning how technology powers global markets. Key Responsibilities Designing and enhancing advanced trading systems ...

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 ...

Senior Systems Engineer

Hiring Organisation
Hays
Location
Newcastle Upon Tyne, Tyne and Wear, North East, United Kingdom
Employment Type
Permanent
Salary
£55,000
academic outcomes in its sixth form provision. Due to recent growth across the group, the IT Team are looking to bring in a Senior Systems Engineer to join their already well-established IT team in this newly created role. Your new role Reporting directly to the Head … Senior Systems Engineer will support the development, security and modernisation of a complex IT environment. This role combines hands-on technical delivery with strategic input, helping to shape cloud adoption, infrastructure improvements and long-term IT planning. You will lead key initiatives such as migrating legacy systems ...

Head of Architecture

Hiring Organisation
Experis
Location
London, United Kingdom
Employment Type
Permanent
standards, governance, and design patterns Driving Microsoft-first architecture across cloud, data, integration, and business platforms Leading architecture alignment across digital, operational, and business systems Translating business strategy into scalable, secure technical solutions Acting as a trusted advisor to senior leadership on technology direction and investment Technology Landscape This … Modern Data Platforms (Azure Data Services, data governance, analytics) API-first & event-driven architectures Enterprise-scale integration across SaaS and legacy systems Key Responsibilities Define and govern the architecture roadmap aligned to business priorities Lead architectural design across D365 solutions and Microsoft cloud platforms Establish best practices ...

Head of Architecture

Hiring Organisation
Experis
Location
Midlands, United Kingdom
Employment Type
Permanent
standards, governance, and design patterns Driving Microsoft-first architecture across cloud, data, integration, and business platforms Leading architecture alignment across digital, operational, and business systems Translating business strategy into scalable, secure technical solutions Acting as a trusted advisor to senior leadership on technology direction and investment Technology Landscape This … Modern Data Platforms (Azure Data Services, data governance, analytics) API-first & event-driven architectures Enterprise-scale integration across SaaS and legacy systems Key Responsibilities Define and govern the architecture roadmap aligned to business priorities Lead architectural design across D365 solutions and Microsoft cloud platforms Establish best practices ...

Data Analyst Apprentice (The Dispute Service LTD)

Hiring Organisation
THE DISPUTE SERVICE LIMITED
Location
The Maylands Building, Maylands Avenue, Hemel Hempstead Industrial Estate, Hemel Hempstead, England, United Kingdom
Employment Type
Higher Apprenticeship
Salary
£19,747 a year
communication in line with the apprenticeship standard. PRINCIPAL RESPONSIBILITIES: Data collection and preparation: Support the collection, validation and organisation of data from multiple internal systems Assist with data cleansing, transformation and aggregation to ensure accuracy and consistency Follow established data quality, security and governance standards Data analysis and insight … Technical development: Learn and apply database querying techniques (e.g. SQL) under supervision Support data extraction and validation activities, including from legacy systems where required Maintain documentation of analysis methods and outputs Apprenticeship and professional development: Actively participate in the Data Analyst Level 4 Apprenticeship programme Complete ...

Senior Embedded Software Engineer

Hiring Organisation
Jobleads-UK
Location
South Willesborough, England, United Kingdom
will play a senior technical role within project teams, contributing to design decisions, supporting more junior engineers and helping to modernise legacy systems using more contemporary approaches. Day‐to‐day, you’ll work on full‐lifecycle embedded software development, primarily focused on real‐time, safety‐critical systems … overseas as required Essential experience of the Senior Embedded Software Engineer: Strong experience developing embedded software in C for real‐time systems Experience working close to hardware, including low‐level drivers and interfaces Proven ability to deliver work across the full product lifecycle Experience diagnosing and resolving complex technical ...

Senior Consultant, Professional Services

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
successful, business‐critical solutions. As a consultant, you will own the solution implementation including the design, deployment, configuration and migration of legacy systems and data. The successful applicant will be experienced and comfortable in project delivery, acting as a trusted advisor to clients and adept at maintaining ...

Lead Mulesoft Developer

Hiring Organisation
Akkodis
Location
City of London, London, United Kingdom
Employment Type
Permanent
Salary
£65000 - £72000/annum
Level 1 (Level 2 desirable) Experience delivering enterprise-scale integrations Integration experience with Salesforce, SAP, ServiceNow, AWS/Azure, databases, and legacy systems Knowledge of API security (OAuth 2.0, JWT, mTLS/SSL/TLS) Familiarity with CloudHub v2.0, Runtime Fabric, and hybrid architectures Why Apply Fully ...

Lead Mulesoft Developer

Hiring Organisation
Akkodis
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£65,000 - £72,000 per annum
Level 1 (Level 2 desirable) Experience delivering enterprise-scale integrations Integration experience with Salesforce, SAP, ServiceNow, AWS/Azure, databases, and legacy systems Knowledge of API security (OAuth 2.0, JWT, mTLS/SSL/TLS) Familiarity with CloudHub v2.0, Runtime Fabric, and hybrid architectures Why Apply Fully ...

Software Development Manager

Hiring Organisation
Arc IT Recruitment
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£10,000 - £130,000 per annum
Role You’ll lead multiple engineering teams and delivery partners, driving the build and integration of modern, cloud-based platforms while transitioning from legacy systems. This is not a hands-on coding role , but equally not a pure programme role — you’ll sit at the intersection of engineering ...

AWS Data Engineer - SC Cleared

Hiring Organisation
Sanderson Government and Defence
Location
London, United Kingdom
Employment Type
Contract, Work From Home
Contract Rate
£480 - £490 per day
understanding of working in secure, regulated, or classified environments Ability to work effectively within structured delivery frameworks Desirable Experience with large-scale or legacy system migration to cloud Knowledge of data governance, security, and compliance in public sector environments This role offers an immediate start for the right ...

Implementation Manager - coach management SaaS platform

Hiring Organisation
Michael Page Sales
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£55,000 - £65,000 per annum
boarding of new customers in the UK Drive structured implementation processes with clear milestones Support and guide customers in migrating from legacy systems and processes (including Distinctive Systems) Map existing workflows and translate them into the platform Ensure successful go-live with minimal operational disruption Customer … from working within or alongside a coach operator Strong understanding of how a coach operator runs: sales, bookings, planning, and operations Familiarity with Distinctive Systems and how it is used in practice Project management, preferably within the implementation of technology Interest in and ability to work with technology ...

Technical Lead - Ruby

Hiring Organisation
Run-Time Group Ltd
Location
Reading, Berkshire, South East, United Kingdom
Employment Type
Permanent
delivery processes. Led the build-out and ongoing evolution of high-traffic Ruby on Rails platforms supporting significant commercial throughput. Modernised legacy systems while ensuring uninterrupted business operations. Introduced AI-powered enhancements to improve customer journeys and internal operational efficiency. Collaborated with stakeholders across pricing, quoting ...

Senior Ruby Engineer - £110K

Hiring Organisation
Run-Time Group Ltd
Location
Reading, Berkshire, South East, United Kingdom
Employment Type
Permanent
delivery processes. Led the build-out and ongoing evolution of high-traffic Ruby on Rails platforms supporting significant commercial throughput. Modernised legacy systems while ensuring uninterrupted business operations. Introduced AI-powered enhancements to improve customer journeys and internal operational efficiency. Collaborated with stakeholders across pricing, quoting ...

Enterprise Architect (Remote)

Hiring Organisation
Jobleads-UK
Location
Bracebridge, England, United Kingdom
technical architecture Creating a solid overview of the current environment and developing future technology roadmaps Planning the move away from legacy systems to new digital technology and cloud migration Qualifications To be considered suitable for this IT Enterprise Architect role you will need to have the following ...

Scrum Master - Active SC, Jira, Agile

Hiring Organisation
Hays Specialist Recruitment Limited
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£545 - £620 per day
Nice to have: Experience working across large-scale client programmes Familiarity with government digital standards or delivery frameworks Exposure to integrating legacy systems and modern cloud-native platforms (e.g. AWS) Understanding of DevSecOps practices within secure environments Relevant Scrum certifications (CSM, PSM, SAFe Scrum Master ...

Platform Engineer

Hiring Organisation
Experis
Location
Cheltenham, Gloucestershire, United Kingdom
Employment Type
Contract
Contract Rate
£520 - £560/day
prototype, test, and adopt emerging technologies Requirements evolve-this is a dynamic, exploratory environment New ideas are valued over simply maintaining legacy systems This is an ideal opportunity for engineers who thrive in fast-moving, evolving environments and want to be at the forefront of technology innovation ...

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 ...

Platform Engineer

Hiring Organisation
Experis
Location
Cheltenham, Gloucestershire, South West, United Kingdom
Employment Type
Permanent
Salary
£520 - £560 per day
prototype, test, and adopt emerging technologies Requirements evolve-this is a dynamic, exploratory environment New ideas are valued over simply maintaining legacy systems This is an ideal opportunity for engineers who thrive in fast-moving, evolving environments and want to be at the forefront of technology innovation ...