14 of 14 Contract Legacy Systems Jobs in London

Workday Financial Data Migration Lead

Hiring Organisation
Sanderson Recruitment
Location
London, United Kingdom
Employment Type
Contract, Work From Home
Contract Rate
£700 - £800 per day
data workstream. Requirement for someone to lead the full data agenda across the programme lifecycle working across legacy systems, Workday, integrations and reporting requirements. Workday Data Lead, key responsibilities: Lead data workstream across full programme lifecycle Define and deliver data strategy - data plan for Workday Financials implementation … Understanding of finance data structures including master data Experience defining and managing data strategies and data plans Previously worked across multiple legacy systems and data sources Overseeing and coordinating technical teams Strong understanding of data quality and data controls Reasonable Adjustments: Respect and equality are core values ...

Workday Data Lead

Hiring Organisation
Sanderson Recruitment
Location
London, United Kingdom
Employment Type
Contract, Work From Home
Contract Rate
£700 - £800 per day
data workstream. Requirement for someone to lead the full data agenda across the programme lifecycle working across legacy systems, Workday, integrations and reporting requirements. Workday Data Lead, key responsibilities: Lead data workstream across full programme lifecycle Define and deliver data strategy - data plan for Workday Financials implementation … Understanding of finance data structures including master data Experience defining and managing data strategies and data plans Previously worked across multiple legacy systems and data sources Overseeing and coordinating technical teams Strong understanding of data quality and data controls Reasonable Adjustments: Respect and equality are core values ...

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 Systems Integration Consultant - Contract

Hiring Organisation
Salt Search
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£400 - £500 per day
Senior Systems Integration Consultant (.NET, Azure, Data, MIS) Job Description Contract Length: 3 months Start: Immediate Day Rate: £400-£500 per day IR35: Outside IR35 Location: Hybrid, predominantly remote Overview We are looking for a senior Systems Integration Consultant to step into a live environment and stabilise … ensure the platform is fully operational. Key Responsibilities Stabilise and optimise Mitratech platform integration Extract and migrate data from legacy .NET systems Build and troubleshootintegrations across: Timesheet systems HR workflows including Excel exports Internal operational systems Implement workflow automation and triggers Debug live production issues ...

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 ...

Analytics Engineer

Hiring Organisation
Harnham - Data & Analytics Recruitment
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£400 - £450 per day
monthsIR35: Outside IR35Location: Remote The Role:· Support the redesign and rebuild of a core data mart, ensuring accuracy and reliability vs legacy systems· Review, understand, and improve existing dbt models (hands-on development)· Perform SQL-based analysis and validation across legacy and new data marts … Troubleshoot data issues and support data quality improvements· Validate data outputs and ensure consistency across systems· Build SQL logic to validate data feeding into Tableau dashboards· Work closely with Analytics Engineers to refine models and improve overall data structure Key Skills:· Strong SQL experience working with complex data models ...

SAP BTP Integration Suite Developer

Hiring Organisation
Experis
Location
London, United Kingdom
Employment Type
Contract
Cloud Integration (CPI), API Management, and Event Mesh. * Developing iFlows to support vital government processes, connecting SAP S/4HANA with legacy systems, HMRC APIs, and other public-sector platforms. * Ensuring all integrations meet high standards of reliability, security, and maintainability. * Working within an Agile team, participating … experience with message mapping. * Familiarity with Agile methodologies and CI/CD pipelines. * Ability to produce comprehensive technical documentation. * Experience working with government systems such as HMRC, DWP, or HMPPS is highly desirable. * Eligibility for Security Check (SC) clearance; active SC preferred. * Right to work in the UK. ...

Lead Enterprise Architect

Hiring Organisation
ECS Resource Group Ltd
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£700 - £750/day IR35 Status TBC
enterprise architecture strategy for a large-scale transformation of customer, billing and revenue platforms Lead the move away from legacy systems into a modern, cloud-first environment that improves performance, scalability, and customer experience Define the target architecture and set a clear, deliverable roadmap from current state ...

Performance Analyst

Hiring Organisation
Experis
Location
London, United Kingdom
Employment Type
Contract
Excel and other tools Strong Python, R, SQL skills and experience Experience extracting and collating data from multiple legacy systems Experience with Data Reporting tools (e.g. Tableau/PowerBI) Experience working in an Agile and dynamic delivery environment in which change and ambiguity often exist Soft skills ...

Programme Manager -Data and AI

Hiring Organisation
Sanderson
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£750 - £850 per day
Programme Manager - Data Platform, AI, Data Ecosystem, Data migration, Technology platforms, Analytics, AI Capabilities, Data Integration, Cloud, ERP, Snowflake, Service Transition, Legacy Systems, End-to-end, Transformation, Retail, Budget Management An amazing new opportunity has just become available to join a leading Retail company as a Programme ...

Business Analyst | 11808-1

Hiring Organisation
Randstad Technologies Recruitment
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£60 - £65/hour
/Hybrid environments. Nice-to-Have: Domain expertise in Customer Support, Contact Centres, or Order Management . Previous experience with SAP migrations or legacy system modernisations. Proficiency in Jira, Confluence, Miro, and BPMN tools. Randstad Technologies is acting as an Employment Business in relation to this vacancy. ...

Software Development Lead

Hiring Organisation
Bruin Financial & Professional Services
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£750 - £850 per day
Hybrid – 1 day onsite) Contract: Day Rate We’re working with a global investment-focused organisation delivering a major transformation programme, replacing a legacy platform with a modern, cloud-based ecosystem. They’re looking for a senior Software Development Manager to lead a key workstream focused on data … user experience Translate business requirements into clear technical delivery plans Drive engineering best practice, team performance and delivery standards Oversee knowledge transfer from legacy system SMEs into the wider team (without direct ownership of the legacy platform) What we’re looking for Proven experience ...