1 to 25 of 51 Permanent Legacy Systems Jobs in the South East

in supporting underserved segments of the mortgage market. Two years ago, they embarked on an ambitious journey to modernise their operations, initiating a massive migration from legacy systems to a cutting-edge cloud environment (Azure). You'll be joining a forward-thinking organisation committed to leveraging technology to enhance its services and operational efficiency. THE ROLE … will lead a large and dynamic team of approximately 30 Data Engineers across multiple locations. Your primary responsibilities will include: Leading Cloud Migration: Overseeing the strategic migration of legacy databases (primarily SQL Server) to the Azure cloud platform. Team Leadership: Managing multiple Data Engineering teams, ensuring continued delivery of legacy projects while simultaneously driving the adoption … leaders across the data office, including the CTO and CIO, to ensure alignment. Third-Party Management: Effectively managing relationships with key third-party partners supporting both legacy systems and modernisation efforts. YOUR SKILLS AND EXPERIENCE: The ideal Head of Data Engineering will have: Proven Leadership: Extensive experience leading large Data Engineering teams, including managing multiple teams and More ❯

ongoing evolution of key platforms in collaboration with cross-functional teams. For this, they are looking for a technically confident developer who's comfortable working across a range of systems, technologies, and business needs. Key Responsibilities: Participate in the design, enhancement, and migration of legacy systems built in C#, VB, and Angular, using MySQL, PostgreSQL, and … maintainability, and ongoing evolution. Contribute to the implementation of modern architectures: microservices, containerised services, and serverless cloud-native components in AWS. Diagnose and resolve complex support issues in legacy applications. Contribute to Agile processes using KANBAN, ensuring transparency and delivery alignment. Document architecture decisions, deployment processes, and codebase changes clearly and thoroughly. Skills & Experience: Expertise in backend development … Javascript, HTML, CSS Strong database skills with SQL Server, MySQL, and PostgreSQL Familiarity working within a cloud environment, particularly AWS or Azure Experience maintaining and modernising legacy systems Experience working in a client-facing or business-facing technical role This is a full-time, permanent role, offering a starting salary up to £65,000 (Depending on experience More ❯

Our client an industry leading private sector business located in East Sussex is looking for a full stack .Net developer. Key Roles Participate in migration of legacy systems built in C#, VB.NET, Angular/TypeScript, using MySQL, PostgreSQL, and SQL Server technologies. Maintaining applications, ensuring reliability, maintainability, and evolution. Act as a liaison between the development team … Angular, TypeScript, JavaScript, HTML, CSS. SQL Server, MySQL, and PostgreSQL. AWS or Azure. Experience in a client-facing or business-facing technical role. Maintaining and modernising legacy systems, including VB.NET. Communication skills to engage confidently with non-technical stakeholders. Knowledge of Docker, CI/CD pipelines, GitHub, and Azure DevOps Reasonable Adjustments: Respect and equality are core More ❯

business that is in the middle of an exciting technology transformation. They are seeking a Senior .NET Developer to take a leading role in modernising their legacy systems and driving AI adoption across the company. This is a fantastic opportunity for someone passionate about technology evolution, AI tooling, and delivering clean, modern code. You’ll help replace … to a React front end (already 50% there!) Mentoring and supporting other developers while ensuring best practices Collaborating with IT and product teams to redesign and modernise core business systems Participating in architecture discussions, code reviews, and deployment strategy Writing maintainable, well-documented code and implementing scalable solutions What We’re Looking For: 5+ years of .NET development experience … with proven modernisation/migration projects Experience moving from legacy systems (VB.NET) to modern stacks Strong knowledge of C#, .NET Core, SQL Server, REST APIs, and cloud environments Hands-on experience using AI developer tools like GitHub Copilot or ChatGPT Passion for clean code, architecture, and technical leadership Strong communication skills and a collaborative mindset Why Join More ❯

benefits An established, financial services group is on the lookout for a Head of Data Engineering to lead their data platform transformation - a critical migration from legacy systems (SQL Server) to modern Azure cloud technologies. You'll oversee a 40-person team of engineers (across the UK and offshore), guide delivery of critical regulatory and treasury projects … banking/financial services sector Strategic mindset with a delivery-focused leadership style Tech Environment: Azure Data Stack (Synapse, Databricks, Azure SQL, Power BI) SQL, Python Legacy systems primarily in SQL Server Interview Process: Initial 30-minute informal converdation 60-minute technical/competency interview with Engineering Managers Final 90 minute session with senior leadership (CDO, CTO More ❯

for application-related queries, triaging and resolving issues while working closely with departmental heads to improve user satisfaction and productivity. You will lead the migration from legacy systems such as ShareFile to modern platforms like SharePoint, guiding users through significant change and embedding new ways of working. You will also support business transformation projects, manage supplier relationships … Applications Manager, you will: Manage and support the Microsoft technology stack, including SharePoint, Copilot, and other SaaS applications such as Adobe and SendGrid Lead migration from legacy systems like ShareFile to modern platforms such as SharePoint Act as the primary internal contact for application-related queries, resolving issues efficiently Engage with heads of department to understand needs … should have experience with the following: Microsoft 365 suite, particularly SharePoint and Teams SaaS application management, including tools such as Adobe Creative Cloud and SendGrid Service desk and ticketing systems, preferably Freshdesk or similar Understanding of software development life cycles (SDLC) and supplier management Awareness of IT security principles and best practices Ability to promote and support adoption of More ❯

responsiveness and customer service. Responsibilities Assists in the solving of business problems by providing detailed personal advice and guidance to all levels of users in the expert use of systems, products and services available to them; demonstrates ingenuity in applying knowledge to complex and non-standard situations. Assists users experiencing difficulties in using information systems, products or services … potential solutions with service providers and implements agreed field modifications or workarounds. In consultation with users, demonstrates all features, plans requirements, installs (including field modification) and commissions desk-top systems, products and services and their upgrades. Ensures that all requests from users for assistance are handled promptly and effectively; is pro-active to ensure that users make effective use … complaints are responsibly and professionally resolved. Regularly monitors the incidence, status and speed of resolution of enquiries and problems; is pro-active in devising improvements and recommending changes to systems, products or services. Provides users with information on the medium and long-term plans and policies of the organisation for the provision of desk-top systems, products and More ❯

tackle complex challenges using tools like Hadoop, Spark, and modern visualisation frameworks while implementing automation that drives government efficiency. You'll collaborate with stakeholders to transform legacy systems, implement data governance frameworks, and ensure solutions meet the highest security standards. Our deep expertise in public sector digital transformation and established presence across defence and government organisations offer … unique opportunities to shape the future of UK public services through innovative data-driven solutions. With our strong technical foundation and focus on mission-critical systems, you'll be part of a team delivering nationally significant projects that have a real impact on public service delivery. If you're passionate about applying cutting-edge data science and engineering in … you will: Data Engineering Focus: Design, implement, and maintain scalable data pipelines and ETL processes Develop and maintain data warehouses and data lakes Implement data quality monitoring and validation systems Create and maintain data documentation and cataloguing systems Optimize data storage and retrieval systems Implement data security and governance frameworks Build and maintain data APIs and services More ❯

provide technical guidance and oversight of customisations, including plugins, workflows, Power Automate flows, and JavaScript, ensuring efficient, reusable, and well-documented code.* Integrate D365 CE with other applications and systems using tools like Azure Logic Apps, Power Automate, and custom APIs.* Oversee the Dynamics 365 environment to enable the successful delivery of their Digital Transformation.* Manage and control D365 … and maintenance for D365 CE applications, troubleshoot issues, and implement fixes and enhancements.* Assist in data migration tasks, ensuring accurate and secure transfer of data from legacy systems to D365 CE* Collaborate with cross-functional teams, including business analysts, project managers, and other developers, to deliver high-quality solutions.* Stay updated with the latest D365 CE features More ❯

a growing Software Consultancy/MSP. As a Senior Developer/Consultant you will work with a long established client to help them modernise and transform legacy systems to modern microservices, cloud based solutions to support business growth. You'll collaborate with the client to understand their business needs and take a lead role in developing and … three times per month. About you: You are an experienced Software Developer/Consultant with strong C# .Net Core skills You have experience with API development, microservices, Cloud based systems (AWS, Azure or GCP) You have a thorough understanding of Computer Science fundamentals such as OOP, Design Patterns, Data Structures You have excellent communication and collaboration skills and are More ❯

and Access Management (IdAM), and overall access governance.This role will collaborate closely with cyber security, engineering, and business stakeholders, ensuring the delivery of secure, modern platforms to replace legacy systems. Candidates based in the UK, able to work in a hybrid model (two days per week in either our London or Nuneaton office), are strongly preferred. The Role … new store and enterprise features. Technical Execution Ensure agile delivery of high-quality, secure solutions using Scrum, SAFe, or other scaled agile frameworks. Guide transitions from legacy systems to secure modern platforms with minimal disruption. Monitor and support post-implementation phases, addressing access issues, incidents, or escalations. Initial Objectives (First 3 Months) Establish and lead a comprehensive More ❯

and validate the processes that will be used with the new system Data migration: Identifying, cleansing and validating the data which we will need to extract from our legacy system for migration into the new system and ensuring the data is extracted and manipulated into the new format Proactively identifying and managing project risks and issues, ensuring minimal More ❯

and establish a modern, scalable, and secure technology platform that supports their long-term goal. This role will be instrumental in managing the transition away from legacy systems, introducing new platforms, and shaping the future direction of IT across the organisation. This role will require 5 days per week in the Redhill office. * Salary … technology, operations, and strategic business objectives. * Define and deliver the technology strategy to support modernisation and growth * Lead the phased migration from legacy platforms .NET to modern systems * Introduce best practices across architecture, integration, and security * Oversee end-to-end delivery of major technology transformation initiatives * Manage cross-functional teams through complex change, including cultural and technical … Manage relationships with external vendors, consultants, and delivery partners * Foster a culture of collaboration, accountability, and continuous improvement * Guide system selection, data architecture, API strategy, cloud adoption, etc * Ensure systems are secure, well-documented, and compliant with industry standards * Drive innovation through automation, analytics, and user-focused tools * Work closely with senior leadership and operational teams to understand needs More ❯

end application ownership - from architecture and design through to delivery and continuous optimisation in the payment services department. You'll play a pivotal role in delivering scalable, real-time systems built using modern technologies and practices, while also acting as a coach, mentor, and strategic partner to stakeholders across business and technology. What kind of work will I be … to lead and grow high-performing teams and shape the technical culture from the ground up. Strategic influence in a highly visible programme that will transform legacy systems into resilient, real-time platforms. A collaborative and supportive environment that values experimentation, learning, and continuous improvement. What are we looking for? You'll demonstrate: Strong hands-on technical … grounding in Java-based systems, APIs, cloud engineering, and DevOps. A proven track record of leading application development teams in complex, regulated environments. Strategic thinking, strong decision-making, and an ability to align technical delivery with business goals. A servant leadership mindset, with a focus on developing others and building high-trust teams. Clear, compelling communication skills - upward, downward More ❯

Borehamwood, seeking an experienced Software Developer to join our small but growing team in progressing the development of our bespoke software, and supporting the migration of legacy systems to the new architecture. As a key member of our team the Software Developer will play a pivotal role in shaping the platform and services that support a suite … of mobile and web applications. Your responsibilities will include designing and developing robust, scalable, and secure backend systems, providing technical expertise across multiple squads as well as defining and enforcing the standards that ensure their integrity and compliance. Software Developer - Required Skills and Experience Good Knowledge of .Net Framework and .Net Core. Develop applications using C#. These are mainly More ❯

healthcare providers. We bring together technology, data, and human-centred design to improve patient experiences, streamline clinical workflows, and enable smarter decision-making. Our work supports delivering integrated care systems, interoperable platforms, cloud-native solutions, and AI-powered tools built around user needs. The role We're looking for an Enterprise Solution Architect to join our growing team and … Contribute to business case development and procurement processes by advising on architectural trade-offs. Maintain awareness of emerging technologies and advise clients on opportunities to modernise legacy systems or adopt innovation responsibly. Champion architecture best practices and coach other team members on digital health architecture principles. Required skills and knowledge Proven expertise in enterprise or solution architecture … to technical and non-technical audiences. Strong stakeholder engagement and communication skills across clinical, business, and technical teams. Experience working on projects related to Community Diagnostic Centres, Integrated Care Systems, or Electronic Patient Records. Understanding of AI, ML, and data analytics applications in healthcare. Exposure to openEHR, IHE profiles, and OpenAPI specifications. TOGAF, BCS, or relevant architecture certification. Experience More ❯

myairops. This is a hands-on technical role, with around 80% of your time focused on personally delivering customer data migrations; transforming and onboarding customer data from third-party systems into the myairops platform. The remaining 20% of your time will provide technical leadership to the wider data engineering function. Youll help set and maintain standards across all migration … as part of their onboarding journey. Work with stakeholders to define, validate, and document migration requirements. Transform, map, and load customer data from third-party or legacy systems into the myairops platform. Develop and maintain onboarding scripts and tooling to support repeatable, high-quality data processing. Ensure data quality and accuracy, validating outcomes and addressing anomalies early. More ❯

Access Developer - Hybrid (1-2 days in HQ) - £60,000-70,000 + benefits This role will take ownership of a legacy product developed in Microsoft Access (Front End) and SQL. The successful candidate will maintain, document, and optimise the current product, whilst - in due course (and in partnershp with a 3rd party) - design, develop, and implement reusable … based platform. Maintain and optimise the existing Access database, ensuring its reliability and efficiency. Produce comprehensive, high-level technical documentation, ensuring code is well-commented and maintainable. Rewrite legacy services to ensure they are modular and reusable in future system developments. Review and refine the SQL database, focusing on building a robust relational database model. Access Developer - Essential … monitoring. Familiarity with the wider Microsoft technology stack/C# and .NET. Business process analysis and optimisation experience. Access Developer - Skills and qualifications: Skilled in managing legacy systems while facilitating modernisation efforts. Strong documentation and communication skills. Ability to work independently and collaboratively across hybrid work environments. In return for joining, you will be provided with industry More ❯

and documentation Running Jira and Agile ceremonies Working with the product manager to plan sprints and prioritize workload for team members Build and maintain robust, secure, and maintainable software systems end to end. Develop loosely coupled, layered software components ensuring they are replaceable, testable, and version-controlled with minimal impact on others. Embrace Clean Code and SOLID principles: your … testing frameworks. Solid understanding of RESTful services and API design. Strong understanding of software design principles (SOLID, DRY or Clean Code). Comfortable navigating and maintaining legacy systems when needed. Experience writing unit and integration tests using JUnit or similar frameworks. Excellent problem-solving skills and attention to detail. Experience in agile environments and working with ticketing … systems (e.g., Jira). Proficiency with Git and modern development workflows (CI/CD). Who are ClearCourse? ClearCourse is a disruptive tech company with one mission to help our customers businesses become even better As a business, were growing (900+ employees in 5 years to be exact), currently providing more than 40 software and payment solutions to More ❯

in a short space of time and place emphasis on well structured, high quality code and a modern technical environment for their Devs to enjoy. Having replaced their legacy system over the past few years they are now looking at new functionality and capability of the system, working across 50 applications. You'll be a proponent of Software More ❯

in a short space of time and place emphasis on well structured, high quality code and a modern technical environment for their Devs to enjoy. Having replaced their legacy system over the past few years they are now looking at new functionality and capability of the system, working across 50 applications. You'll be a proponent of Software More ❯

processes. Collaborate on client solutions including Office 365, Azure, Hyper-V/VMware, firewalls, and more. Scope and assist in project rollouts—from onboarding new clients to upgrading legacy systems. What We’re Looking For: Proven experience in a 2nd/3rd Line Support role within an MSP or similar environment. Proven experience leading and mentoring other engineers. More ❯

across complex and sensitive client environments. This is a hands-on internal testing role, not web application focused, where you'll be expected to work independently and navigate challenging systems with confidence. This role is suited to testers who thrive in technically demanding scenarios, want autonomy, and are motivated by work with real-world impact. Key Responsibilities Conduct internal … penetration testing Strong knowledge of Active Directory exploitation techniques (privilege escalation, lateral movement, etc.) Confident working in high-stakes, sensitive environments Strong command-line skills across Windows and Linux systems Ability to work through legacy systems, unpatched software, and environments with technical debt Desirable Skills Python scripting or automation experience Understanding of Operational Technology (OT) networks More ❯

a talented Figaro Developer to join their Custody, Trading and Investments (CTI) product development team. This role plays a key part in enhancing the Figaro platform, supporting business-critical systems and delivering technical change that directly impacts operational excellence and client outcomes. The successful candidate will be responsible for configuring, developing, integrating and supporting the Figaro application. You will … that align with business objectives. You will also partner with product managers and users to design and implement enhancements, troubleshoot issues, and support ongoing migration from legacy systems to modern architectures. To be considered, you must have proven experience working with the Figaro platform in a financial services or wealth management environment. Excellent SQL skills are essential … Familiarity with See/Change source control, TDD and best-practice development methodologies is highly desirable. Just as important will be your ability to interpret business requirements, analyse complex systems, and communicate effectively with technical and non-technical stakeholders alike. This is an outstanding opportunity to join a collaborative and forward-thinking development team in a permanent position, with More ❯

in Central London. This is a hybrid role, requiring 2-3 days per week in the office. This is a modern, digitally native business with no legacy systems - a rare opportunity to work in a clean, forward-thinking tech environment. You'll be joining a dynamic and fast-paced team that values innovation, adaptability, and continuous improvement. … GCP subject matter expert, with direct support from Google Contribute to the adoption of AI and emerging technologies post-migration Thrive in a fast-evolving environment with minimal legacy constraints Requirements : Proven experience as a Data Engineer. Hands-on experience with cloud migrations (on-prem to cloud or cloud-to-cloud). Strong knowledge of GCP, including BigQuery. More ❯