26 to 50 of 296 Legacy Systems Jobs in the UK

Machine Learning Engineering Lead

Hiring Organisation
RELX Group
Location
Exeter, Devon, United Kingdom
Salary
£ 70 K
Engineering LeadAre you passionate about designing and deploying intelligent machine learning solutions that drive business impact Do you enjoy leading teams, building scalable ML systems, and turning complex data into innovative products and services About the team:We are a software engineering team responsible for developing and supporting business … Engineering, supporting production AI/ML, LLM/RAG, and agentic workflow capabilities for legal content products. In addition to writing code on complex systems, this position provides technical direction on architecture, MLOps, responsible AI, legacy system integration, AWS-based delivery, and AI-assisted development practices. ...

Machine Learning Engineering Lead

Hiring Organisation
Hackajob Ltd
Location
City of London, London, United Kingdom
Employment Type
Permanent
Lead Are you passionate about designing and deploying intelligent machine learning solutions that drive business impact? Do you enjoy leading teams, building scalable ML systems, and turning complex data into innovative products and services? About the team: We are a software engineering team responsible for developing and supporting business … Engineering, supporting production AI/ML, LLM/RAG, and agentic workflow capabilities for legal content products. In addition to writing code on complex systems, this position provides technical direction on architecture, MLOps, responsible AI, legacy system integration, AWS-based delivery, and AI-assisted development practices. ...

Transformation Project Manager

Hiring Organisation
The Travel Corporation
Location
City of London, Greater London, UK
YOUR EXPERIENCE AND EXPERTISE Essential Experience 5+ years’ experience delivering complex technology projects within matrixed or transformation environments. Proven experience delivering enterprise platforms, reservation systems, booking systems, ERP, CRM, transactional systems or major legacy technology replacements. Experience managing projects across the full delivery lifecycle, including … discovery, design, build, integration, data migration, testing, cutover and hypercare. Strong experience managing complex integrations and dependencies across multiple systems and technology teams. Experience leading data migration activities, including planning, validation, reconciliation and cutover. Experience working in a matrixed organisational model and co-ordinating with product, engineering, architecture, data ...

Senior FX eTrading Developer - VP - London

Hiring Organisation
Citigroup
Location
London, United Kingdom
Salary
£ 80 K
solutions that benefit the businessThe role does not involve budget responsibilityDrive the design and development of system architecture, work with end-users of the systems, and enhance the quality of deliverables Ensure staff follows Citi documented policy and procedures as well as maintain desktop procedures and supporting documentation … trading and quant teamsKey Skills and Experience requiredProven understanding of FX highly preferredUnderstanding of ultra low-latency development practicesProven track record of building new systems, replacing legacy systems and renovating existing systemsThe candidate will have systems (software, hardware, networks) knowledge required to define solutions ...

Head of Markets Finance Desk Technology (Director)

Hiring Organisation
Citigroup
Location
London, United Kingdom
Salary
£ 100 K
settlements, inventory/position management, collateral optimization, liquidity and risk management. Architecture & Design: Own the architecture and design of enterprise applications, focusing on distributed systems, and scalable solutions that adapt to changing market conditions. Ensure adherence to technical design, application development standards, and quality processes. Project & Product Delivery: Manage … operations stakeholders, and other partner technology teams to gather requirements, manage expectations, and deliver effective solutions. Identify and mitigate potential risks related to systems, processes, and regulatory compliance. System Optimization: Identify system bottlenecks and deficiencies, devising and implementing robust solutions to enhance resiliency, performance, and scalability. Provide technical consultation ...

Lead Pricing Engineer (SVP) - FX eTrading

Hiring Organisation
Citigroup
Location
London, United Kingdom
Salary
£ 120 K
greatest impact, efficient use of resource, and alignment to business structuresDrive the design and development of system architecture, work with end-users of the systems, and enhance the quality of deliverables Ensure staff follows Citi documented policy and procedures as well as maintain desktop procedures and supporting documentation … that is seen as the engineering role model for the organizationAbility to work directly with trading and quant teamsProven track record of building new systems, replacing legacy systems and renovating existing systemsThe candidate will have a strong systems (software, hardware, networks) knowledge required to define ...

Principal Solutions Architect

Hiring Organisation
MongoDB
Location
United Kingdom
Salary
£ 60 K
domain driven design, microservice architectures, test-driven development, event-driven architectures, operational data layers, test automation, etc.Experience designing with scalable and highly available distributed systems in the cloud and on-premFacilitate technical workshops and discovery sessions with customer architects, developers, and business leadersExperience installing and delivering complex demonstrations consisting … major cloud providersExperience with database programming and data modelsExperience in data engineering or AI/ML projectsExperience in transforming legacy systems and platforms into modern, scalable, and efficient technology stacksUnderstanding of popular sales methodologies/frameworks such as MEDDPICC/Command of the MessageA MongoDB CertificationA Cloud ...

Senior II Product Engineer

Hiring Organisation
9fin
Location
London, United Kingdom
Salary
£ 80 K
category-defining platform for debt markets worldwide.We're looking for a Senior II Product Engineer to take broad technical ownership of the backend systems powering 9fin's platform.You will sit between our Senior and Staff engineering tracks. You will own meaningful systems end to end, lead multi sprint … financial and legal domain experts.This role suits someone who has already grown beyond a typical senior remit. You enjoy diving into distributed systems problems, and you have firsthand experience scaling services under real production load.What you'll doOwn the design and delivery of significant backend systems and services ...

Senior Technology Architect Databricks

Hiring Organisation
Infosys Technologies
Location
London, United Kingdom
Salary
£ 80 K
design, build, and operate scalable data pipelines and data products, enabling a modern data mesh architecture. The role focuses on integrating legacy systems with cloud-native platforms to support analytics, reporting, and domain-owned data products.Primary Skills• Strong experience with Databricks (Spark, PySpark/SQL) and data … data engineering best practices.Key Responsibilities• Build and maintain batch and streaming data pipelines from legacy mainframe DB2 and on prem SQL Server systems into an AWS-based data lake.• Implement real-time ingestion using Confluent Kafka and land data in Amazon S3.• Develop data transformations and analytics ...

OSM Migration Service Lead

Hiring Organisation
Hackajob Ltd
Location
Farnborough, Hampshire, South East, United Kingdom
Employment Type
Permanent
Salary
£85,000
engineering and technology sector. We deliver enterprise technology solutions that help government agencies, defence organisations and commercial entities modernise operations, migrate legacy systems, and transform service delivery. About the Role The OSM Migration Service Lead is a senior technical leadership position responsible for designing, planning, executing … services with business objectives and contractual obligations. Technical Architecture & Design Design target-state operational architectures incorporating modern IT infrastructure, cloud services and integrated systems Evaluate migration approaches (phased, big-bang, hybrid) and recommend optimal strategies based on risk, timeline and cost factors Ensure migrated services meet security requirements including ...

Lead Software Engineer - Python, Databricks, AWS

Hiring Organisation
JP Morgan Chase
Location
Glasgow, Lanarkshire, United Kingdom
Salary
£ 80 K
stages of data processing and transformation, implementing monitoring and alerting mechanisms to maintain pipeline reliability.Support data migration and modernization initiatives, transitioning legacy systems to cloud-based data warehouses.Lead communities of practice across Software Engineering to promote awareness and adoption of new technologies. Foster a team culture ...

Salesforce Technical Lead

Hiring Organisation
NTT DATA
Location
London, United Kingdom
Salary
£ 80 K
experience you'll bring:Familiarity with public sector regulations, compliance (e.g., GDPR, FOIA), and procurement processes.Knowledge of common public sector challenges: legacy systems, citizen engagement, case management, grants, licensing.Proficiency in Salesforce particularly Service Cloud, Experience Cloud, and Public Sector Solutions.Strong grasp of Data Cloud, MuleSoft, OmniStudio ...

Mid-Level Software Developer

Hiring Organisation
Oscar Associates (UK) Limited
Location
Castleford, West Yorkshire, Yorkshire, United Kingdom
Employment Type
Permanent
Salary
£50,000
site Salary: Competitive, depending on experience Job Type: Permanent The Opportunity We are recruiting for an exciting opportunity for a Mid-Level IT Systems Developer to join a small, collaborative IT team within an established organisation. This is a great role for a developer who has moved beyond junior … level and is looking for the opportunity to take ownership of defined development work, contribute to important business systems, and play an active role in improving and modernising existing technology. The environment offers plenty of scope to broaden your technical knowledge, work across a range of systems ...

Principle Data Warehouse Engineer - Executive Director

Hiring Organisation
Hackajob Ltd
Location
South West London, London, United Kingdom
Employment Type
Permanent
domain of emerging technologies and their best practices, with a focus on practical implementation and integration Shows a proficient understanding of existing data management systems and continuous learning to understand new data management systems Strong proficiency in hands-on development using industry-standard tools and languages (e.g. … data lake optimization Experience architecting and implementing enterprise-scale data warehouses on cloud platforms (e.g., AWS, Azure, GCP), including migration from legacy systems Advanced proficiency in designing and optimizing data models for analytics, reporting, and business intelligence use cases Demonstrated ability to automate data pipeline deployment ...

Lead Software Engineer – Python / Java - AI -Markets Technology, Credit Pre-Trade Technology

Hiring Organisation
JP Morgan Chase
Location
London, United Kingdom
Salary
£ 100 K
technical troubleshooting with the ability to think beyond routine or conventional approaches to build solutions or break down technical problems.Build and support AI-native systems to expand our eTrading capabilities, including the development of scalable AI platforms for trading and the modernization of incumbent systems with AI tooling.Engage … directly with Credit Sales and Trading business partners to understand their strategy and establish technical solutions in partnership with Product teams.Architect and build new systems hands-on, leveraging AI-assisted coding and modern engineering practices.Develop secure, high-quality production code, and review and debug code written by others.Identify opportunities ...

Lead AI DevOps Engineer

Hiring Organisation
Lorien Resourcing
Location
London, United Kingdom
Salary
£ 70 K
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 … enabling AI within modern, API‐first software platforms, particularly where legacy or existing systems need to evolve to support new capabilities safely and effectively.You will:Provide technical leadership across AI‐enabled software and DevOps engineering teamsSet architectural direction for API‐first design, system integration, and platform enablement ...

Senior Software Developer

Hiring Organisation
Computer Futures
Location
Nottingham, Nottinghamshire, United Kingdom
Employment Type
Permanent
Salary
GBP 70,000 - 80,000 Annual
evolution Build and enhance operator-facing applications, dashboards and visualisation tools displaying real-time system data Own application logic, workflows and behaviour within production systems Contribute to overall software architecture, technical standards and development best practices Implement and maintain version control and CI/CD pipelines using GitHub Ensure … resilient, with a strong emphasis on fault handling and diagnostics Collaborate with controls, robotics and mechanical engineers to ensure seamless integration with physical systems Support testing, commissioning and deployment of software releases Mentor junior developers and contribute to technical decision-making within the team Required Skills & Experience Software Development ...

SFDC Data Modeller, Data Analyst, SFDC Dev

Hiring Organisation
Tata Consultancy Services
Location
London Area, United Kingdom
reusable and scalable Salesforce components. Perform code reviews and enforce development best practices. Data Migration & Integration Support data migration activities from legacy systems to Salesforce. Design and validate ETL processes and data transformation rules. Work with integration teams to implement API-based integrations. Develop and support data ...

Lead Platform Engineer

Hiring Organisation
Driver and Vehicle Standards Agency
Location
Nottingham, United Kingdom
Employment Type
Full Time
drivers, vehicles, and driving instructors across Great Britain. Our Digital Delivery function is at the forefront of this mission, transforming legacy systems into modern, agile, and user-centric digital services that are used by millions. You will join our collaborative Digital Services division, working specifically within ...

Lead Platform Engineer

Hiring Organisation
Driver and Vehicle Standards Agency
Location
City of Bristol, United Kingdom
Employment Type
Full Time
drivers, vehicles, and driving instructors across Great Britain. Our Digital Delivery function is at the forefront of this mission, transforming legacy systems into modern, agile, and user-centric digital services that are used by millions. You will join our collaborative Digital Services division, working specifically within ...

Lead Platform Engineer

Hiring Organisation
Driver and Vehicle Standards Agency
Location
Borough of Oldham, United Kingdom
Employment Type
Full Time
drivers, vehicles, and driving instructors across Great Britain. Our Digital Delivery function is at the forefront of this mission, transforming legacy systems into modern, agile, and user-centric digital services that are used by millions. You will join our collaborative Digital Services division, working specifically within ...

Lead Platform Engineer

Hiring Organisation
Driver and Vehicle Standards Agency
Location
City and Borough of Birmingham, United Kingdom
Employment Type
Full Time
drivers, vehicles, and driving instructors across Great Britain. Our Digital Delivery function is at the forefront of this mission, transforming legacy systems into modern, agile, and user-centric digital services that are used by millions. You will join our collaborative Digital Services division, working specifically within ...

Lead Platform Engineer

Hiring Organisation
Driver and Vehicle Standards Agency
Location
City and County of Swansea, United Kingdom
Employment Type
Full Time
drivers, vehicles, and driving instructors across Great Britain. Our Digital Delivery function is at the forefront of this mission, transforming legacy systems into modern, agile, and user-centric digital services that are used by millions. You will join our collaborative Digital Services division, working specifically within ...

Lead Platform Engineer

Hiring Organisation
Driver and Vehicle Standards Agency
Location
Newry Mourne and Down, United Kingdom
Employment Type
Full Time
drivers, vehicles, and driving instructors across Great Britain. Our Digital Delivery function is at the forefront of this mission, transforming legacy systems into modern, agile, and user-centric digital services that are used by millions. You will join our collaborative Digital Services division, working specifically within ...

Lead Platform Engineer

Hiring Organisation
Driver and Vehicle Standards Agency
Location
City and Borough of Leeds, United Kingdom
Employment Type
Full Time
drivers, vehicles, and driving instructors across Great Britain. Our Digital Delivery function is at the forefront of this mission, transforming legacy systems into modern, agile, and user-centric digital services that are used by millions. You will join our collaborative Digital Services division, working specifically within ...