12 of 12 Contract Legacy Systems Jobs in the South East

LogiInfo Specialist

Hiring Organisation
Tenth Revolution Group
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£350 - £500 per day
experienced engineer who possesses hands-on LogiInfo web application development expertise and is eager to play a vital role in transforming legacy systems into contemporary solutions. In this role, you will be crucial in understanding the existing application framework and ensuring a successful transition … application development.- Solid understanding of application architecture, backend services, and data management principles.- Proven ability to analyze and document legacy systems effectively.- Excellent communication skills for collaboration across technical and non-technical teams.- Experience with custom-built platforms and modern web stacks is a plus.If ...

Product Lead - Billing Migration (Commercial Banking)

Hiring Organisation
Lorien
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
Salary negotiable
play a pivotal role. This is a high-impact position where you'll lead the end-to-end migration from legacy billing systems to a modern, scalable platform , while owning the digital billing experience across customer channels. You'll sit at the intersection of product, technology … billing migration strategy and execution Own the migration roadmap, including dependencies, risks, and key milestones Oversee transition from legacy systems with minimal/no customer disruption Ensure pricing integrity, service continuity, and regulatory compliance throughout Proactively resolve product, billing, and integration challenges Digital Product Ownership Own billing ...

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 ...

Senior Web Developer

Hiring Organisation
Office Angels
Location
Basingstoke, Hampshire, England, United Kingdom
Employment Type
Contractor
Contract Rate
Competitive salary
leading organisation on a contract basis . This is an exciting opportunity to work on a high-impact greenfield project , modernising legacy systems using cutting-edge technologies. The Role You will play a key role in the redesign and redevelopment of legacy in-house applications … while also supporting existing systems during the transition period. Key responsibilities include: Leading full-stack development on a greenfield application rewrite Supporting and maintaining legacy applications Collaborating with stakeholders to gather and refine business requirements Designing and managing MS SQL Server databases Developing integrations with internal corporate ...

SAP Implementation Business Analyst

Hiring Organisation
Sussum Consulting LTD
Location
Marlow, Buckinghamshire, England, United Kingdom
Employment Type
Contractor
Contract Rate
£50,000 - £55,000 per annum
live stability. Data Migration Support: Collaborate with data owners to define objects, cleansing rules, and validation logic for migration from legacy systems to S/4HANA. Testing & QA: Coordinate User Acceptance Testing (UAT), develop test scripts, and ensure that the solution meets defined business criteria. Change Management ...

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 ...

Project Manager - Housing Management System

Hiring Organisation
ARM
Location
Portsmouth, Hampshire, United Kingdom
Employment Type
Contract
Contract Rate
£0.00 - £450/day
experienced Project Manager to lead the delivery of a major Housing Management System (HMS) transformation programme. The project will replace multiple legacy systems with a modern cloud-hosted platform, improving services, data quality, compliance, and customer experience for over 15,000 households across Portsmouth. Key Responsibilities Lead … housing regulatory requirements. Essential Experience Proven experience delivering complex IT and digital transformation projects, ideally within Housing or Local Government. Experience with Housing Management Systems such as NEC Housing, Microsoft Dynamics 365, or similar enterprise platforms. Strong background in SaaS implementations, data migration, supplier management, risk management, and stakeholder ...

Contract Business Data Analyst

Hiring Organisation
Connells Group HQ
Location
Caldecotte, Milton Keynes, Buckinghamshire, England, United Kingdom
Employment Type
Contractor
Contract Rate
Competitive salary
work effectively with engineers, business SMEs, and data architects. Key Responsibilities Legacy System & Reporting Analysis Analyse and document existing heritage CRM reporting systems with a focus on data structures, business logic, and reporting outputs. Discover, decompose, and document legacy reporting and MI processes (including … data analysis skills, including understanding of: Relational databases and SQL Data models and schemas ETL and reporting processes Experience analysing legacy CRM systems and complex reporting logic. Strong understanding of operational and analytical reporting, including KPIs, MI, and reconciliation. Ability to work effectively with: Data Engineers Database ...

Contract Data Architect

Hiring Organisation
Connells Limited
Location
Milton Keynes, Buckinghamshire, South East, United Kingdom
Employment Type
Contract
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 … stakeholders. 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 Experience in developing common data models for core business concepts Experience of CRM system ...

Cut Over Manager

Hiring Organisation
Hays Specialist Recruitment Limited
Location
Uxbridge, Middlesex, England, United Kingdom
Employment Type
Contractor
Contract Rate
Salary negotiable
execution for a large-scale Oracle Fusion HCM transformation. This role will ensure a controlled, low-risk transition from legacy HR systems into Oracle Cloud, coordinating across multiple work streams and stakeholders. * Location: Uxbridge * Daily Rate: Flexible * Contract Length: Sep 2027 * Start Date: ASAP Key Responsibilities * Develop ...

Data Mapping Engineer - IBM Maximo

Hiring Organisation
Tenth Revolution Group
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£350 per day
data is translated, transformed, and integrated across complex systems. This is a fantastic opportunity for someone who enjoys working at the intersection of data, systems, and business logic-ensuring that information flows accurately and efficiently between platforms. The Role You'll be responsible for designing and delivering robust data … mapping solutions, helping to bridge gaps between legacy and target systems as part of a wider transformation. Working closely with technical and functional stakeholders, you'll ensure that data structures are aligned, consistent, and fit for purpose. What You'll Be Doing Examine and interpret source ...

Senior Kotlin Engineer (XP, GCP) - Investment Banking - London

Hiring Organisation
Salt Search
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£500 - £800 per day
Capital Markets. You will join a high-calibre London-based front office engineering team working on a next-generation issuance platform replacing a legacy bookbuilding system. This is a hands-on engineering role with a strong emphasis on Extreme Programming (XP) practices, including mob programming, test-driven development … store Artifact Registry and Cloud Logging Key Management Experience with CI/CD and SDLC in regulated or enterprise environments Comfortable working on production systems requiring high availability and accuracy Engineers in this role: Work primarily in mobs, sharing ownership of design and code Build, test, and evolve services ...