17 of 17 Contract Legacy Systems Jobs in London

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 ...

C++ Developer

Hiring Organisation
Addition
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£600 per day
leading online gaming platforms. This is an opportunity to work on a large-scale, business-critical C++ platform, helping modernise legacy systems while supporting a major cloud migration programme. Role Overview Location: Remote, must be based in UK Package: £600 - £650pd Outside IR35 Duration: 3 months (Sept … modernisation programme. Refactor and modernise legacy components while maintaining stability and existing functionality. Build and enhance high-performance, low-latency, server-side systems supporting a live platform. Integrate platform services with AWS where required as part of the wider cloud programme. Use AI-assisted development tools, including ...

PowerApps Developer (Contract) - SC Cleared / NPPV3

Hiring Organisation
Sanderson Government and Defence
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£375 - £520 per day
experience delivering enterprise-grade Power Platform solutions end-to-end Ability to integrate Power Platform with external APIs, Azure services, and legacy systems Experience working in secure/public sector environments highly desirable Solid understanding of application lifecycle management (ALM) within Power Platform Strong problem-solving skills ...

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 ...

D365 F&O Data Migration Developer

Hiring Organisation
Akkodis
Location
City of London, London, United Kingdom
Employment Type
Contract
working closely with data leads, functional consultants, and architects to design and execute efficient ETL processes, ensuring a smooth transition from legacy systems with an emphasis on accuracy and scalability. Responsibilities Design and build ETL processes and migration solutions. Extract, transform, and cleanse data from legacy ...

Data Engineer

Hiring Organisation
Oliver James
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£400 - £500 per day
digital infrastructure provider with 100+ sites across the continent - is looking for a Data Engineer to join a major transformation programme consolidating multiple operational systems into a single target platform. You'll be at the centre of the migration workstream: building the pipelines, transformation logic, and validation frameworks that … move data from legacy systems into the new target operating platform - working closely with the Data Workstream Lead, business SMEs, and application teams. What you'll be doing: Designing and building ETL/ingestion pipelines using Microsoft Fabric (Data Factory, Pipelines, Lakehouse, Notebooks) or equivalent Azure tooling ...

Service designer

Hiring Organisation
Experis
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£500 - £549/day
across digital, branch, telephony and customer servicing. Build service blueprints that connect the customer-facing experience to the back-stage processes, systems and teams that deliver it. Run discovery and workshops with stakeholders across functions to understand how each journey really works. Identify handoffs, gaps, duplication and points … banking or broader financial services is acceptable. Confidence facilitating workshops and interviewing stakeholders across business functions and operations. Comfort with the back-stage: process, systems, ownership and servicing. Mid-weight to senior. Able to lead a journey workstream with light direction. Nice to have Experience inside or alongside ...

Data Engineering Team Leader

Hiring Organisation
TALENT ZONE LTD
Location
Hounslow, Middlesex, England, United Kingdom
Employment Type
Contractor
Contract Rate
£800 - £801 per day
will be accountable for connecting data from the new Oracle HCM Cloud to the new AWS Snowflake solution and unifying data layer between legacy and new HRIS system feed to data warehouse. The role ensures high-quality, timely, and governed delivery of data initiatives, working across engineering, analytics … technical data HR domain · Domain Knowledge – HR data and data warehousing solutions · Ideally Experience delivering HR Data/People Analytics · Experience working with HR systems data (Workday, SAP SuccessFactors, Oracle HCM or similar) · Strong experience in data delivery/data project management roles · Strong stakeholder management, especially with ...

Project Manager - Global Markets IT

Hiring Organisation
Lorien Resourcing Limited
Location
City, London, United Kingdom
Employment Type
Contract
Contract Rate
GBP Annual
function in London. This is a senior, highly experienced role, leading a workstream within a wider transformation programme focused on decommissioning a legacy booking system and migrating to an existing target platfo click apply for full job details ...

Systems Data Analyst

Hiring Organisation
Computappoint
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£370 - £420/annum
Systems Data Analyst | Inside Contract | Hybrid Rate: £350 - £420 per day Contract Duration: Initial 6 Months Hybrid: 40% or less onsite a week (London Industry: Professional Services/Highly Regulated Environment Job Summary: Seeking an experienced Systems Data Analyst to support a major technology transformation programme within … uncover undocumented functionality and data relationships. Contribute to data governance initiatives and promote best practice across projects. Qualifications & Requirements: Demonstrable experience within Data Analyst, Systems Analyst or Database-focused roles. Strong SQL skills and confidence analysing data held across diverse platforms. Solid understanding of data structures, modelling techniques ...

Application Consultant AWS Cloud Migration R - T2M3F9

Hiring Organisation
Hays Technology
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£550/day 550 per day inside IR35
OverviewIBM is seeking an experienced Application Consultant/Architect - AWS Cloud Migration to support the JSAPS Data Migration Discovery within the DWP's Legacy Tech Debt Programme.This programme is focused on identifying and defining the minimum viable dataset required to safely decommission JSAPS, a legacy benefits … data migration strategy, helping to shape the safest and most pragmatic approach to migrating, archiving, or retiring data across a highly complex legacy estate comprising 54 Oracle database instances. Key Responsibilities Provide expert consultancy and leadership on data migration strategy and planning. Work directly with the organisation ...

Integration Solution Architect

Hiring Organisation
Experis
Location
London, United Kingdom
Employment Type
Contract
heavily focused on enterprise integration architecture and requires a candidate with proven experience designing and governing integrations across digital commerce platforms, supply chain systems, partner networks, marketplaces, fulfilment operations, and third-party technology providers. Key Responsibilities Define end-to-end solution and integration architectures across a complex international retail … with API Management, microservices, event-driven architecture, messaging platforms, and system integration patterns. Experience integrating enterprise platforms, SaaS applications, third-party vendors, and legacy systems. Strong stakeholder management and communication skills. Technical Environment Microsoft Azure Azure Integration Services API Management Event-Driven Architecture Kafka IBM MQ Java/ ...

Senior Project Manager

Hiring Organisation
Randstad Technologies Recruitment
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£620 - £650/day
ability to influence cross-functional global teams. Experience working on any of the following related projects: Core Banking Transformation; Enterprise Architecture Transformation; Legacy System Modernisation How to Apply If you are a hands-on Project Manager with experience working on any of the following projects: Core Banking Transformation … Enterprise Architecture Transformation or Legacy System Modernisation, we would love to hear from you. Apply today to register your interest! Randstad Technologies is acting as an Employment Business in relation to this vacancy. ...

WMS Product Manager

Hiring Organisation
Addition
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£400 - £500 per day
extension Budget: £400 - £500pd Inside IR35 Industry: Retail/Supply Chain/Warehouse Management What You'll Be Doing Take ownership of the legacy Food Warehouse Management System product, ensuring it continues to support day-to-day operations effectively. Manage and prioritise the product backlog, aligning work with … requirements. Experience working within Agile product delivery environments. Exposure to warehouse automation technologies, including Autonomous Mobile Robots (AMRs), would be advantageous. Knowledge of legacy WMS modernisation or migration programmes would be beneficial. What's in It for You Long-term contract with an initial 12-month engagement ...

Project Manager - Global Markets IT

Hiring Organisation
Lorien Resourcing Limited
Location
City of London, London, United Kingdom
Employment Type
Contract
function in London. This is a senior, highly experienced role, leading a workstream within a wider transformation programme focused on decommissioning a legacy booking system and migrating to an existing target platform - covering the booking chain end-to-end, front office through to back office and risk. … Good knowledge of the Front-to-Finance chain for OTC, including risk and PnL Good knowledge of referential and market data systems Good knowledge of target architecture core principles Experience planning, coordinating, executing, and following migrations to target architecture Knowledge of relevant decision-making bodies' operations Knowledge of technical ...

NetDocuments DMS Specialist - Remote working

Hiring Organisation
Circle Recruitment
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£60,000 - £85,000 per annum
NetDocuments DMS Specialist - Remote working NetDocuments DMS Specialist, with excellent experience in Document Management Systems, NetDocuments, including configuration of cabinets, workspaces, profiles and metadata, and security structures, is required by a UK-wide law firm. This role can be fully remote and you can work from anywhere … administration of cabinets, workspaces, profiles, metadata structures, and security models to support legal and business requirements.* Strong working knowledge of alternative Document Management Systems (DMS), including iManage, with a deep understanding of how legal DMS platforms organise, classify, secure, and govern documents and metadata.* Proven track record in document ...

SAP Payroll/HCM Consultant

Hiring Organisation
Randstad Digital
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£380 - £420 per day + Negotiable
instrumental in creating new Legal Entities (LEs) and enabling separate end-to-end (E2E) payroll runs for distinct business groups within our legacy system. If you have a deep understanding of ECC Payroll, Time Management, and cross-functional integrations, this is an excellent opportunity to take ownership … Blueprint document and local regulatory/compliance standards. Integration Management: Ensure seamless data flow and integration between Workday (WD), General Ledger (GL), banking systems, and HR/Time platforms. Testing & Quality Assurance: Design E2E test scenarios, define expected results, and guide data mining efforts to ensure flawless payroll execution. ...