24 of 24 Contract Legacy Systems Jobs in the South East

Role OverviewThe client is seeking a mid-to-senior level contractor with strong backend and infrastructure development experience. The successful candidate will work on maintaining and upgrading a legacy Java/Oracle system, collaborating with existing developers to gain domain knowledge and contribute to modernisation efforts using cloud-based technologies. Key Responsibilities* Maintain and enhance a monolithic Java … skills and a passion for working with data* Be comfortable working with legacy Oracle PL/SQL code and motivated to improve it* View legacy systems as an opportunity to gain valuable domain knowledge* Embrace 3rd line support responsibilities and seek ways to automate and improve support processes* Be proficient in test-driven development and More ❯

aligns with corporate governance, MoD/Defence standards, and project timelines, delivering best value while mitigating commercial and contractual risks. Key Responsibilities: Procurement & Sourcing Lead sourcing activities for IT systems, software, and implementation services to support the ERP replacement programme (Oracle ERP implementation). Develop, issue, and manage RFPs/RFQs, supplier evaluations, and negotiation strategies in line with … the BFS Programme team, IT, and Finance to align procurement deliverables with the ERP transformation roadmap. Support the transition from SAP/Ariba procurement processes to Oracle ERP-based systems and tools. Provide procurement and commercial insight into ERP system configuration, vendor integrations, and licensing models. Support the development of procurement templates, policies, and processes within the new ERP … Defence, Aerospace, or Government). Strong understanding of software procurement, licensing models, and IT implementation services. Experience managing complex ERP or IT transformation procurements (preferably Oracle, SAP, or similar systems). Solid commercial and contractual negotiation skills. Working knowledge of public sector procurement frameworks and Defence Standards (DEFCONs, DSPCR, or equivalent). Ability to work collaboratively across multidisciplinary teams More ❯

scalable technology solutions across the Army's digital ecosystem. Working within a multi-disciplinary Defence team, you'll help define and implement solution architectures that modernise legacy systems, establish new digital standards, and ensure systems are interoperable, resilient, and aligned with strategic objectives. The ideal candidate will bring strong Defence or Army experience - particularly an understanding … of command, intelligence, and operational systems - combined with the technical expertise to design solutions that drive real operational advantage. This is a hybrid role and you will be required to work 2 days a week onsite in Andover. Valid SC clearance is essential, and previous MOD/Army experience is highly desirable. Key Responsibilities Lead the definition, design, and … frameworks. Skills & Experience Required Proven experience as a Solution Architect on large-scale, complex transformation programmes. Strong Army or Defence background , ideally with knowledge of command, control, and intelligence systems . Deep understanding of architecture frameworks, design standards and methodologies. Experience with secure software development lifecycles , OWASP , GDPR , and NCSC Cloud Security Principles . Demonstrated ability to design and More ❯

Consultant on a contract basis Seeking a skilled Sage Intacct Consultant to assist with the implementation, configuration, and data migration of the Sage platform as part of an ongoing systems transformation project. This role will bridge the gap between IT operations and business users, ensuring a smooth transition to the new environment. Role The Sage Intacct Consultant will support … and rollout of Sage across the business, working closely with internal stakeholders and external vendors. Assist in data migration activities - cleansing, mapping, validation, and import from legacy systems into Sage. Provide technical and user support, troubleshooting issues during implementation and post-go-live. Work with IT and Finance teams to ensure system integrations, user permissions, and reporting More ❯

testing support. Assist users in 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. Essential Skills & Experience Proven experience in More ❯

manipulating data from Salesforce and NetSuite Proficient in SQL and data warehouse development Solid experience with Power BI, including Power Query and DAX Experience working with legacy systems and data migration projects Strong analytical and problem-solving skills HOW TO APPLY: Please register your interest by sending your CV to Mojola Coker via the apply link on More ❯

Provide support to interoperability Information management and sharing between legacy, current and future capabilities. Work with LC2, OpNET L3/4 teams and other legacy systems to ensure interoperability solutions have IM support and can be implemented across Navy FLC interests. Develop and administer the Navy FLC OpNET HUB, create and collapse site collections as … information management MOD security clearance or be willing to undergo Security Clearance to DV level Desirable Skills Some knowledge of industry standards - BRd7747 Involvement in an iHub Communications information systems (Royal Navy) Providing support with SharePoint Background knowledge of either naval or maritime would be advantageous Excellent communication skills Able to follow the laid-down process Computer literate and More ❯

Provide support to interoperability Information management and sharing between legacy, current and future capabilities. Work with LC2, OpNET L3/4 teams and other legacy systems to ensure interoperability solutions have IM support and can be implemented across Navy FLC interests. Develop and administer the Navy FLC OpNET HUB, create and collapse site collections as … information management MOD security clearance or be willing to undergo Security Clearance to DV level Desirable Skills Some knowledge of industry standards - BRd7747 Involvement in an iHub Communications information systems (Royal Navy) Providing support with SharePoint Background knowledge of either naval or maritime would be advantageous Excellent communication skills Able to follow the laid-down process Computer literate and More ❯

redesign of business processes to improve efficiency, quality, and organisational alignment. Employing structured methodologies such as Lean or Six Sigma. Recommending the rationalisation or decommissioning of legacy systems, reporting mechanisms, or processes as appropriate. Plan, organise, and monitor detailed activities and deliverables across workstreams. Assist with scope definition and prioritisation to ensure timely and successful project delivery. … Dependencies (RAID). Facilitate workshops and stakeholder engagement sessions to capture insights and validate proposed solutions. Operate adaptively within evolving project and programme frameworks. Oversee the migration of legacy files into modern architectures, supporting broader data and digital migration strategies. Evaluate and contribute to the deployment of digital tools, including Power BI and M365. Standardise software delivery practices More ❯

Design and implement robust solutions, coordinating User Acceptance Testing (UAT) with business stakeholders. Develop responsive web applications using GSS, Java, and open-source technologies. Integrate GE Smallworld with external systems via REST APIs using GSS. Data Management Design and manage data update services for external integrations. Oversee data migration activities from legacy systems to Smallworld, ensuring … of Smallworld 5.x architecture, Mobile Enterprise Suite, and Azure Kubernetes Services (AKS). Proficiency in GSS, JavaScript, and HTML5 for mobile and web development. Experience in integrating with enterprise systems such as IBM Maximo. Desirable Skills/Knowledge/Experience (as applicable): Strong communication and interpersonal skills. Customer-facing experience. Willingness to travel and ability to collaborate effectively with More ❯

Data Migration Lead to oversee the end-to-end data migration workstream for a Greenfield SAP S/4HANA implementation. This role is pivotal in transitioning legacy systems to SAP using tools such as SAP Data Services and SAP Migration Cockpit. The ideal candidate will bring deep expertise in the data migration lifecycle and full project delivery More ❯

Data Migration Lead to oversee the end-to-end data migration workstream for a Greenfield SAP S/4HANA implementation. This role is pivotal in transitioning legacy systems to SAP using tools such as SAP Data Services and SAP Migration Cockpit. The ideal candidate will bring deep expertise in the data migration lifecycle and full project delivery More ❯

for the right candidate Are you a visionary architect with a passion for transforming operational capabilities? Our client is on a mission to elevate their Work and Asset Management systems, and they're looking for a talented Senior Solution Architect to lead the charge! About the RoleJoin our dynamic team and play a crucial role in refreshing the Work … and Asset Management capabilities. You will be instrumental in migrating from legacy systems to cutting-edge platforms, including IBM Maximo and ESRI ArcGIS. Your expertise will ensure a smooth transition and help the organisation unlock new automation capabilities. Key Responsibilities Collaborate closely with the Domain Architect to align technology roadmaps with business needs. Shape initiatives and conduct More ❯

for the right candidate Are you a visionary architect with a passion for transforming operational capabilities? Our client is on a mission to elevate their Work and Asset Management systems, and they're looking for a talented Senior Solution Architect to lead the charge! About the Role Join our dynamic team and play a crucial role in refreshing the … Work and Asset Management capabilities. You will be instrumental in migrating from legacy systems to cutting-edge platforms, including IBM Maximo and ESRI ArcGIS. Your expertise will ensure a smooth transition and help the organisation unlock new automation capabilities. Key Responsibilities Collaborate closely with the Domain Architect to align technology roadmaps with business needs. Shape initiatives and More ❯

for the right candidate Are you a visionary architect with a passion for transforming operational capabilities? Our client is on a mission to elevate their Work and Asset Management systems, and they're looking for a talented Senior Solution Architect to lead the charge! About the RoleJoin our dynamic team and play a crucial role in refreshing the Work … and Asset Management capabilities. You will be instrumental in migrating from legacy systems to cutting-edge platforms, including IBM Maximo and ESRI ArcGIS. Your expertise will ensure a smooth transition and help the organisation unlock new automation capabilities. Key Responsibilities Collaborate closely with the Domain Architect to align technology roadmaps with business needs. Shape initiatives and conduct More ❯

for the right candidate Are you a visionary architect with a passion for transforming operational capabilities? Our client is on a mission to elevate their Work and Asset Management systems, and they're looking for a talented Senior Solution Architect to lead the charge! About the Role Join our dynamic team and play a crucial role in refreshing the … Work and Asset Management capabilities. You will be instrumental in migrating from legacy systems to cutting-edge platforms, including IBM Maximo and ESRI ArcGIS. Your expertise will ensure a smooth transition and help the organisation unlock new automation capabilities. Key Responsibilities Collaborate closely with the Domain Architect to align technology roadmaps with business needs. Shape initiatives and More ❯

on a fixed term contract basis for 9-12 months . Workday represents a significant investment and a genuinely transformative change for our organisation, replacing many legacy systems, processes and ways of working, ensuring that SNG is fit for the future and better able to serve our customers. Based from our Basingstokeoffice, you'll combine home and … Finance modules to users and supporting the system implementation across HR and Finance Strong presentation, listening and facilitation skills Strong organisation and time management skills Understanding of learning management systems, instructional design and adult learning methodologies Knowledge of digital learning tools, including LMS platforms, MS Teams, Articulate or similar Ability to translate complex system processes into clear, accessible training More ❯

initiatives alongside Data Management (inclusive of data journeys, analysis, integration and migration) The Business Analyst will support the end-to-end migration of data from legacy NAS systems to a modern Data Centre infrastructure. This role involves working closely with technical teams, stakeholders, and project managers to ensure a smooth, secure, and efficient transition of data assets. More ❯

broadcast and connectivity programme . This work sits within a strategic engineering function focused on delivering next-generation Audio/Video processing, multiplexing, and broadcast network services across legacy and cloud environments. Assignment Details Initial Duration: 6 months (with potential extension) - start ASAP Location: Primarily remote - occasional on-site near … Hampshire Day Rate: £p/day Role Overview You'll work closely with Broadcast Engineering, Network Engineering and Product teams to design, deploy, optimise and troubleshoot Audio & Video processing systems across broadcast and satellite networks. The role requires someone with a blend of broadcast engineering knowledge, multiplexing expertise, strong network fundamentals, and cloud/virtualisation awareness , able to support … and integration with existing broadcast infrastructure Ability to engage with SMEs and technical teams to troubleshoot issues and drive improvements Experience supporting the integration of legacy broadcast systems with cloud or virtualised architectures Proficiency with diagnostic engineering tools and broadcast monitoring systems Awareness of AWS, Azure or Google Cloud environments advantageous Strong documentation, communication and stakeholder More ❯

to cloud migration projects and shape new technology transformation workstreams. The Role Lead cloud modernisation projects (on-premise to public cloud) End-to-end life cycle management and legacy system transformation Navigate government commercial frameworks and procurement Work on new initiatives from inception with team of 5 Essential Skills Cloud modernisation experience (AWS/Azure) - disqualifying if absent … Legacy technology transformation (VMware, Hyper-V, Oracle) Government sector experience (almost essential) Agile delivery and digital service modernisation Strategic thinking with technical depth The Details Rate: £675/day inside IR35 Duration: 6 months Location: London/Bristol/Manchester (any location, flexible working) Clearance: BPSS minimum, SC preferable More ❯

regulated environments. Key Responsibilities: Define and lead enterprise API strategy and architecture Drive API adoption and governance across teams Ensure secure, scalable integration with legacy and cloud systems Maintain compliance with financial regulations Monitor and optimise API performance and developer experience Experience Required: Proven leadership in large-scale API programmes Expertise in REST, OAuth2, OpenAPI, and API More ❯

We are seeking an Energy Migration Senior Data Analyst to join our Home Services Energy Data Team to assist with the migration of our Energy Portfolio from UW legacy application to Gentrack Junifer. This is an exciting opportunity to contribute to a major data migration project in an award winning energy provider and UK FTSE 250 company. Please … consider fixed term or day rate contract - please indicate your preference in your application. The migration work will have two parts: a) Migration of portfolio from our UW legacy CRM system to Gentrack. b) Build extract scripts to pull data from Gentrack Junifer database and load the data into UW BigQuery data warehouse to assist with management, regulatory More ❯

lead a new cloud modernisation programme within the government sector. This is a strategic leadership role where you'll shape the approach to transforming legacy on-premise systems to modern public cloud infrastructure. What You'll Be Doing Leading the strategy and execution of on-premise to cloud migration programmes Shaping new technology modernisation work-streams from … end technology transformation life-cycles Navigating government commercial frameworks and procurement processes Understanding and managing dependencies across operational support and outsourcing Applying modern practices (DevOps, SecOps, Agile) to legacy system modernisation Essential Experience Technical Proven experience leading cloud modernisation projects (on-premise to public cloud) Strong understanding of public cloud platforms (AWS, Azure) Experience with legacy More ❯

role within the Digital Delivery Team , working with stakeholders across Infrastructure, Architecture, Security, and Procurement. Programme Context The current environment is based on legacy Cisco and Aruba systems, a hub-and-spoke WAN model, and ageing LAN switches. This setup limits performance, introduces single points of failure, and constrains the rollout of modern technologies such as Wi More ❯