101 to 125 of 146 Permanent Legacy Systems Jobs

Fullstack Developer - .NET 9 & React (m/f/d)

Hiring Organisation
Optimus Search
Location
Köln, Nordrhein-Westfalen, Germany
Employment Type
Permanent
Salary
EUR Annual
clear path for career advancement . They are now seeking Fullstack .NET Developers to join newly formed teams responsible for modernising legacy systems and building a new software architecture using the latest .NET 9 technology. The company has offices in Giessen , Koblenz , and Berlin . Tasks Design … develop , and document the architecture of a newly acquired product and integrate standardised software solutions. Extract components from a legacy system and migrate them to modern, cloud-based platforms. Coordinate and manage system interfaces in collaboration with cross-functional teams. Engage in full-stack development using C#.NET ...

Infrastructure Engineer

Hiring Organisation
Hays
Location
Cardiff, South Glamorgan, Wales, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£55,000
working from either the Newport or Cardiff office and will pay c£50 - £55k + competitive benefits. The Infrastructure Engineer designs, implements, and maintains systems and processes that support continuous integration and reliable operation of third-party and internal IT infrastructure. The role ensures performance, security, and availability while … Responsibilities Architect and manage Azure-based cloud environments, including network design, hybrid connectivity, and security best practices. Support migration of legacy systems to cloud platforms. Automate deployments, builds, and environment provisioning. Monitor system health, performance, and capacity; perform tuning and proactive issue resolution. Maintain documentation for deployment ...

Software Development Apprenticeship

Hiring Organisation
Baltic Apprenticeships
Location
Wilmslow, Cheshire, North West, United Kingdom
Salary
£18,000
training team at Baltic Apprenticeships. A Typical Day in the Job: Develop, deliver and support dynamic web applications and services. Upgrade legacy systems to improve functionality and usability with modern web technologies. Use APIs to synchronise the flow of data between internal and external systems. Support … keen interest in modern software development principles. A desire to be involved in a fast paced team environment. Knowledge and experience of modern information systems including computer proficiency. Strong people and communication skills. Grade 6 in GCSE Maths and Grade 4 in GCSE English. Salary, Hours&Benefits ...

Software Developer

Hiring Organisation
Uniting Ambition
Location
Staffordshire, United Kingdom
Employment Type
Permanent
impact and your voice drives innovation? This is your chance to join a global, tech-forward organisation that’s transforming its legacy systems into a modern, service-oriented architecture. You’ll play a key role in that transformation, with the opportunity to grow your skills, contribute fresh … Server and T-SQL Excellent communicator who thrives in a team setting Bonus: Experience working on high-availability , multi-user , n-tier distributed systems Hybrid Working Based in the West Midlands , with flexible hybrid working that balances collaboration and personal productivity. If you're ready to join a business ...

Senior Software Engineer, PHP

Hiring Organisation
ARC IT Recruitment
Location
Brighton, Sussex, United Kingdom
Employment Type
Permanent
Salary
GBP Annual
essential) Experience working with APIs and third-party integrations Excellent communication skills and a proactive, problem-solving mindset Comfortable maintaining Legacy systems while supporting technology modernisation A thoughtful, methodical and customer-focused approach to development If you're looking for a role that combines hands-on coding ...

Senior Software Engineer, PHP

Hiring Organisation
ARC IT Recruitment Ltd
Location
Brighton, East Sussex, South East, United Kingdom
Employment Type
Permanent
Salary
£60,000
essential) Experience working with APIs and third-party integrations Excellent communication skills and a proactive, problem-solving mindset Comfortable maintaining legacy systems while supporting technology modernisation A thoughtful, methodical and customer-focused approach to development If youre looking for a role that combines hands-on coding with ...

Salesforce Developer

Hiring Organisation
Iceland Food Group
Location
Deeside, Flintshire, Wales, United Kingdom
Employment Type
Permanent
transaction websites. You would join us at an exciting time during an exciting programme of change and re-platforming legacy systems into the Salesforce eco system. In this role, you can expect to: Implement new features using the right tool and technology for the job. Work with ...

Senior Front End Developer

Hiring Organisation
VIQU IT
Location
Newcastle, Felling, Tyne & Wear, United Kingdom
Employment Type
Permanent
Salary
£58000 - £60000/annum
Upon Tyne (One day a week on site) VIQU have partnered with a national organisation going through an exciting transformation from legacy systems, and so are looking to hire a Senior Frontend developer focused on React. Responsibilities of the Senior Front End Developer: Assist in the design ...

React Native Developer

Hiring Organisation
Rise Technical Recruitment Limited
Location
Spalding, Lincolnshire, East Midlands, United Kingdom
Employment Type
Permanent, Work From Home
will have the freedom to work on bespoke mobile applications. This company is a digital transformation company specialising in bespoke software development, legacy system support, and enterprise applications for a diverse range of clients. In this varied role you will design, develop, and maintain cross-platform mobile applications ...

React Native Developer

Hiring Organisation
Rise Technical Recruitment Limited
Location
lincoln, midlands, united kingdom
will have the freedom to work on bespoke mobile applications. This company is a digital transformation company specialising in bespoke software development, legacy system support, and enterprise applications for a diverse range of clients. In this varied role you will design, develop, and maintain cross-platform mobile applications ...

Sales Operations / RevOps Lead

Hiring Organisation
Rec3 Global Ltd
Location
City of London, London, United Kingdom
Employment Type
Permanent
Salary
£75,000
chaos Equally happy deep in the weeds or shaping the big picture Why this is exciting You wont be inheriting a broken legacy system. Youll be building the foundations of a revenue function in a company thats still early enough for your work to have a huge impact ...

Full-stack Developer - C#.Net React

Hiring Organisation
Big Red Recruitment
Location
Sutton-in-Ashfield, Nottinghamshire, England, United Kingdom
Employment Type
Full-Time
Salary
£45,000 - £65,000 per annum
C# .NET APIs powering core ERP and operations Are you a full-stack developer who enjoys solving complex problems and modernising legacy systems This role sits within a growing internal technology team involved in major software modernisation and integration initiatives. You’ll work across ERP enhancement, ecommerce … Someone who brings curiosity, challenge, and practical decision-making to development.What you’ll be doing* Developing scalable C# .NET APIs to support internal ERP systems and operational workflows* Delivering UI features and improvements across React-based web applications* Connecting backend architecture with front-end experience for smooth commercial ...

Oracle Applications Developer

Hiring Organisation
Platform Recruitment Limited
Location
Spalding, Lincolnshire, United Kingdom
Employment Type
Permanent
Salary
GBP Annual
Oracle Application Developer Location: 5 days onsite (Lincolnshire area) My client is a well-established digital transformation company specialising in bespoke software development, legacy system support, and enterprise applications. They partner with a wide range of organisations to deliver tailored, high-quality solutions that streamline operations and support ...

Planning, Performance & Risk Analyst

Hiring Organisation
Robert Walters
Location
Birmingham, West Midlands, England, United Kingdom
Employment Type
Full-Time
Salary
Competitive salary
metrics on office occupancy, rolling forecasts, and time recording to stakeholders.* Developing new productivity applications using Power Apps to replace outdated legacy systems and improve operational efficiency.* Acting as primary contact for internal auditors by coordinating audit schedules, maintaining records of issued reports, organising meetings, and following ...

AI Automation Engineer

Hiring Organisation
McCabe & Barton
Location
London, United Kingdom
Employment Type
Permanent
Salary
GBP Annual
data modelling. Skilled in building end-to-end business process applications, configuring workflows, implementing business rules, managing records, and integrating Appian with external systems via REST APIs, web services, and connected systems. API Development & Integration - Proficient in designing and building RESTful APIs using FastAPI, Flask, or Django REST Framework … models and automation services. Experience with API authentication (OAuth, JWT), rate limiting, error handling, API documentation (Swagger/OpenAPI), webhooks, and integrating disparate systems to create seamless automated workflows. Document Processing & OCR - Experience implementing intelligent document processing solutions using OCR technologies (Tesseract, Azure AI Document Intelligence, natural language processing ...

AI Automation Engineer

Hiring Organisation
McCabe & Barton
Location
Central London, London, United Kingdom
Employment Type
Permanent
data modelling. Skilled in building end-to-end business process applications, configuring workflows, implementing business rules, managing records, and integrating Appian with external systems via REST APIs, web services, and connected systems. API Development & Integration - Proficient in designing and building RESTful APIs using FastAPI, Flask, or Django REST Framework … models and automation services. Experience with API authentication (OAuth, JWT), rate limiting, error handling, API documentation (Swagger/OpenAPI), webhooks, and integrating disparate systems to create seamless automated workflows. Document Processing & OCR - Experience implementing intelligent document processing solutions using OCR technologies (Tesseract, Azure AI Document Intelligence, natural language processing ...

Senior BI Engineer

Hiring Organisation
Fruition Group
Location
York, North Yorkshire, Yorkshire, United Kingdom
Employment Type
Permanent
Salary
£65,000
forward thinking organisation, supporting the delivery of high quality data solutions. This role offers the chance to optimise data pipelines, manage backend BI systems, and develop scalable reporting solutions in a collaborative and supportive environment. The purpose of your role is to drive business value by building, maintaining … Azure and Microsoft Fabric. Knowledge of BI engineering concepts, including data modelling, ETL, pipelines, and backend data management. Experience with legacy BI systems (SSIS, SSAS cubes) and troubleshooting processes. Strong problem-solving skills and attention to detail, with the ability to manage multiple priorities. Excellent communication skills ...

Software Engineer - C#.Net + React

Hiring Organisation
Big Red Recruitment Midlands Limited
Location
Nottinghamshire, Nuthall, United Kingdom
Employment Type
Permanent
Salary
£50000 - £70000/annum £50 000 - £70 000
full-stack developer who enjoys solving complex problems and modernising legacy systems? This role sits within a growing internal technology team involved in major software modernisation and integration initiatives. You’ll work across ERP enhancement, ecommerce capability, and third-party system connectivity. It’s a hands … brings curiosity, challenge, and practical decision-making to development. What you’ll be doing Developing scalable C# .NET APIs to support internal ERP systems and operational workflows Delivering UI features and improvements across React-based web applications Connecting backend architecture with front-end experience for smooth commercial and manufacturing ...

Business Intelligence Developer

Hiring Organisation
Reed Technology
Location
Ipswich, Suffolk, East Anglia, United Kingdom
Employment Type
Permanent
Salary
£45,000
analytics. REED Technology are working with an organisation that is rolling out Pyramid Analytics as its central BI platform-replacing several legacy systems-and needs someone who can turn data into compelling stories, not just dashboards. If you thrive in stakeholder-facing roles, can communicate insights clearly ...

Data Architect

Hiring Organisation
Connells Group HQ
Location
Caldecotte, Milton Keynes, Buckinghamshire, England, United Kingdom
Employment Type
Full-Time
Salary
Competitive salary
Hybrid Integration Design: Lead the design and implementation of data solutions that integrate Azure cloud-native services with legacy SQL Server systems and third-party APIs and data feeds. Data Modelling and Standards: Develop and enforce data modelling standards (conceptual, logical, physical) across platforms. Promote reuse, consistency … decisions. Experience and Skills Required: Experience with Data Architecture and governance, public-cloud platforms (Azure, AWS, GCP) , SQL Server, data integration with third-party systems, ideally Microsoft Fabric Experience with data modelling and metadata management Relevant degree or post-graduate qualification, ideally certification in Cloud Architecture and Data Management ...

Junior Applications Engineer

Hiring Organisation
SF Recruitment (Leicester)
Location
Derbyshire, East Midlands, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£35,000
factory to commission new laser machines and support production and process development - Gaining deep product knowledge across legacy and modern laser systems and helping advance our product line - Few times a month, visiting customer sites to repair, maintain and commission laser machines Key Responsibilities - Responsible for developing … equipment - Commission new machines in the factory: setup, calibration, acceptance testing, handover to production - Learn and document the differences between legacy laser systems and new-generation machines, their physical design, control systems and maintenance regimes - Collaborate with production and manufacturing teams to support process development ...

Graduate Applications Engineer

Hiring Organisation
SF Recruitment (Leicester)
Location
Derbyshire, East Midlands, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£35,000
factory to commission new laser machines and support production and process development - Gaining deep product knowledge across legacy and modern laser systems and helping advance our product line - Few times a month, visiting customer sites to repair, maintain and commission laser machines Key Responsibilities - Responsible for developing … equipment - Commission new machines in the factory: setup, calibration, acceptance testing, handover to production - Learn and document the differences between legacy laser systems and new-generation machines, their physical design, control systems and maintenance regimes - Collaborate with production and manufacturing teams to support process development ...

SAP Core Banking Lead

Hiring Organisation
Accenture
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
Competitive salary
/4HANA Core Banking and Transactional Banking (TRBK) migrations, platform consolidation, and post-merger integration strategies. Expertise in both legacy core systems and modern composable architectures, with a focus on SAP’s modular, service-oriented architecture. Proven ability to define and execute target-state architectures and migration ...

Consultant/Senior Consultant - Linux/AIX Technology Lead

Hiring Organisation
Wise Skulls
Location
Wichita, Kansas, United States
Employment Type
Any
Salary
USD Annual
HMCs, and the AIX operating system to maintain system performance, availability, and integrity. Key Responsibilities: Conduct routine maintenance and health checks on IBM Power Systems, including installation, configuration, and maintenance of AIX Legacy operating systems and system firmware. Proficient in scripting and automation using tools such ...

Lead Back-End Developer

Hiring Organisation
ADLIB Recruitment
Location
Exeter, Devon, South West, United Kingdom
Employment Type
Permanent
Salary
£55,000
microservices. Experience managing technical roadmaps and stakeholder expectations. Confident working with cloud services (e.g., AWS, Azure) and CI/CD pipelines. Familiarity with reporting systems, data pipelines, and system configuration tools. Exposure to frontend frameworks such as Vue.js or React. Prior involvement in system re-architecture or platform migration … projects. What youll be doing: The Lead Back-End Developer will drive the delivery and evolution of back-office systems, ensuring continuous improvements and enabling platforms to be high-performing, secure, and future-ready. This is a hands-on leadership role ideal for a technically skilled senior developer ...