1 to 25 of 98 Remote/Hybrid Legacy Systems Jobs in the UK

Systems Analyst

Hiring Organisation
IntaPeople
Location
United Kingdom, United Kingdom
Employment Type
Permanent
Salary
£45000 - £50000/annum
Systems Analyst Location: Fully Remote (UK) Salary: Up to £50,000 Job Type: Permanent We're looking for a Systems Analyst to join our Technology team and take ownership of several business-critical applications. This is a hands-on role where you'll provide 2nd line application support … maintain and improve business systems, write SQL queries and reports, and help support the organisation as legacy systems are replaced with modern SaaS platforms. You'll work closely with an outsourced IT support provider, taking ownership of issues that require deeper application, data or configuration knowledge. ...

Technical Project Manager (Applications)

Hiring Organisation
Sanderson Recruitment
Location
Glasgow, Lanarkshire, Scotland, United Kingdom
Employment Type
Contract, Work From Home
Contract Rate
£400 - £425 per day
portfolio of around 300 applications and a similar number of third-party suppliers. This is a highly visible role working across legacy systems, operational teams, risk, suppliers and project stakeholders to ensure upgrades, decommissioning activity and application change are delivered safely and effectively. Key responsibilities Lead … coordinate activity across a large portfolio of third-party applications, including legacy systems, upgrades and decommissioning work. Liaise with third-party suppliers to plan, prioritise and deliver application change, ensuring upgrades are managed effectively and service risks are understood. Work closely with operational teams, risk stakeholders ...

Software Engineer - Mission Management Systems

Hiring Organisation
Hackajob Ltd
Location
Yeovil, Somerset, South West, United Kingdom
Employment Type
Permanent, Part Time, Work From Home
Salary
£65,000
standard range are managed through governance controls to protect internal equity. At Leonardo in Yeovil we are seeking an experienced Software Engineer - Mission Management Systems to drive the end-to-end development of high-integrity aircraft software during a critical technical pivot. This role focuses on the evolution … Tactical Mission Management Systems-maintaining the reliability of our legacy manned platforms while architecting the software for our emerging uncrewed and autonomous capabilities. Your impact Working within our Helicopter division, you will be taking ownership of complex mission system software component, ensuring legacy systems ...

Software Engineer - Mission Management Systems

Hiring Organisation
Leonardo DRS
Location
Yeovil, Somerset, United Kingdom
Salary
£ 50 K
above the standard range are managed through governance controls to protect internal equity.At Leonardo in Yeovil we are seeking experienced Software Engineers - Mission Management Systems to drive the end-to-end development of high-integrity aircraft software during a critical technical pivot. This role focuses on the evolution … Tactical Mission Management Systems—maintaining the reliability of our legacy manned platforms while architecting the software for our emerging uncrewed and autonomous capabilities.Your impactWorking within our Helicopter division, you will be taking ownership of complex mission system software component, ensuring legacy systems remain robust ...

Senior Full Stack Engineer - Agentic Industrial Emissions Platform (React and Go)

Hiring Organisation
IFS
Location
London, United Kingdom
Salary
£ 80 K
Core Responsibilities :Lead the design, architecture, and implementation of scalable APIs, services, and accessibility-first user interfaces. Drive the modernization of legacy systems into modular, event-driven, API-first components. Deliver AI-native features and improvements across both front-end and back-end, using multiple programming languages … outcomes from design through to production. Desirable :Experience with cloud platforms such as Azure, AWS, or GCP. Experience with event-driven architectures, distributed systems, or microservices. Experience modernizing legacy systems into modular, scalable platforms. Experience working in cross-functional product teams. Experience mentoring engineers or contributing ...

Contract Principal Software Architect

Hiring Organisation
Spectrum It Recruitment Limited
Location
Uxbridge, London, United Kingdom
Employment Type
Contract, Work From Home
integrations. Define clear service boundaries, ownership models and integration patterns . Support engineering teams in delivering scalable, maintainable and well-structured solutions. Assess existing systems and identify opportunities to simplify, consolidate and modernise platform capabilities. Support the evolution of legacy systems towards agreed target-state architectures … through pragmatic, incremental change. Make and guide technical decisions around distributed systems, APIs, integrations, data and cloud architecture . Ensure security, resilience, observability, performance and scalability are incorporated into solution designs. Identify architectural risks, technical debt and platform constraints, and establish appropriate mitigation strategies. Provide technical review and architectural ...

Senior Electronic Design Engineer - High Speed Digital

Hiring Organisation
Verso Recruitment
Location
Colchester, Essex, South East, United Kingdom
Employment Type
Permanent
Salary
£55,000
legacy designs and tackle obsolescence projects. Your innovative thinking and problem-solving skills will be at the forefront, ensuring that older systems are revitalised and continue to perform at their best. The ideal candidate will possess a strong background in hardware design engineering. Proficiency in CAD tools … deep understanding of electronic components and systems are crucial. Experience with legacy systems and obsolescence management will set you apart, demonstrating your ability to navigate and update older technologies effectively. Experience & Skills required for the Senior Electronic Design Engineer – High Speed Digital, Reading: Proven experience with ...

Software Engineering Lead

Hiring Organisation
WTW
Location
Greater London, United Kingdom
Employment Type
Full Time
long-term maintainability Guide API and domain design standards - clear service boundaries, consistent contracts, and pragmatic integration between modern services and legacy systems Shape event-driven and integration patterns so teams can build independently without breaking cross-squad journeys Champion automated testing, observability, and production readiness … Oversee database and schema evolution practices - migrations, data integrity, and performance - in partnership with platform and infrastructure teams Lead incident response for backend-owned systems - triage, escalation, post-incident reviews, and runbook quality Mentor engineers on PHP (Yii/Yii2), Go, Security, Performance and Optimisation - raising the bar through ...

IT Manager (Business Applications)

Hiring Organisation
RHR
Location
London Area, United Kingdom
will lead the delivery of business-critical applications while supporting a major ERP transformation programme. You'll oversee the transition from legacy systems to a new ERP platform, ensuring business continuity throughout the migration. Managing a team of application specialists, you'll coordinate testing, training and data … applications such as ERP, WMS and OMS. You'll be a confident people leader with strong stakeholder management skills, a solid understanding of enterprise systems, integrations and data governance, and experience managing multiple projects simultaneously. Knowledge of Oracle Retail would be highly advantageous, as would experience supporting legacy ...

IT Data Analyst / IT Data Migration Specialist

Hiring Organisation
Adecco
Location
Havering, London, Havering atte Bower, United Kingdom
Employment Type
Contract, Temporary
Salary
£41.31 - £54.22/hour Umbrella, PAYE, Holiday, Pensions Sch
initial discovery phase. Analyse existing datasets and assess data quality. Develop data mapping and migration strategies. Execute data migration from legacy systems to a new cloud platform. Provide recommendations on migration approach, risks, and timelines. Support successful implementation and completion of the migration project. Map the Ocella … systems. Proven ability in data mapping , including matching and transforming data between source and target systems. Experience migrating data from legacy systems to cloud-based platforms . Ability to assess data quality, identify issues, and recommend migration approaches. Desirable Skills Previous experience with iDocs Cloud migrations . ...

IT Data Analyst / IT Data Migration Specialist

Hiring Organisation
Adecco
Location
Havering-atte-bower, Essex, United Kingdom
Employment Type
Contract
Contract Rate
GBP 41 - 54 Hourly
initial discovery phase. Analyse existing datasets and assess data quality. Develop data mapping and migration strategies. Execute data migration from legacy systems to a new cloud platform. Provide recommendations on migration approach, risks, and timelines. Support successful implementation and completion of the migration project. Map the Ocella … systems. Proven ability in data mapping , including matching and transforming data between source and target systems. Experience migrating data from legacy systems to cloud-based platforms . Ability to assess data quality, identify issues, and recommend migration approaches. Desirable Skills Previous experience with iDocs Cloud migrations . ...

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 ...

Smart Contract Developer

Hiring Organisation
ARM
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£600 - £625/day
practices. Investigate and resolve defects identified during functional, integration, migration and production testing. Support reconciliation and validation of financial calculations between legacy systems and Vault. Analyse existing product behaviour and legacy-system rules when supporting product migration. Contribute to technical design discussions and identify potential … behaviour with both technical and non-technical stakeholders. Highly Desirable Experience implementing Lending and/or Savings products. Experience migrating financial products from legacy core banking platforms onto Thought Machine Vault. Understanding of Lending and Savings concepts, including: Interest accrual and application. Repayment schedules. Fixed and variable interest ...

Senior Developer

Hiring Organisation
ECS
Location
Cheltenham, Gloucestershire, South West, United Kingdom
Employment Type
Permanent
Salary
£65,000
Developer Location: Cheltenham (Hybrid) Salary: £65k As a Senior Developer, you will play a key role in supporting, maintaining, and evolving our core business systems and integrations. Working within the Business Systems team, you will deliver reliable, scalable solutions that support day-to-day operations, improve user experience … enable business growth. This is a hands-on, varied role combining development, database optimisation, and systems integration. You will collaborate closely with stakeholders across the business, contributing to both new initiatives and continuous improvement of existing platforms. Your responsibilities as a Senior Developer will be: Develop, maintain, and enhance ...

Solutions Architect

Hiring Organisation
MongoDB
Location
United Kingdom
Salary
£ 60 K
needs of our customers.MongoDB Pre-Sales Solution Architects are responsible for guiding our customers and users to design and build reliable, scalable systems using our data platform. Our team is made up of seasoned technical sales professionals, software architects, entrepreneurs, and developers who take direct responsibility for customer success …/or popular programming languages (e.g. C/C++, Java, C#) in a professional capacityExperience designing with scalable and highly available distributed systems in the cloud and on-premDemonstrated ability to work with customers to review complex architecture of existing applications, providing guidance on how to improve by leveraging ...

CLOUD INFRASTRUCTURE ARCHITECT

Hiring Organisation
Sanderson Recruitment
Location
Milton Keynes, Buckinghamshire, South East, United Kingdom
Employment Type
Permanent
client as they embark on one of the most significant technology transformation programmes in their history. As part of a move away from legacy Oracle platforms towards a modern SaaS-first ecosystem, we're looking for a Cloud Infrastructure Architect to help define the future cloud strategy … Join? This is a unique opportunity to join us during a pivotal period of change. The organisation is replacing longstanding legacy systems, investing in market-leading SaaS platforms, implementing Snowflake as its strategic data platform, exploring AI use cases through Snowflake Cortex, and preparing for a major ...

HRIS Analyst

Hiring Organisation
Morson Edge
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£60,000
recruiting on behalf of a well-established organisation in the financial services sector for an experienced HRIS Analyst to join their HR Systems team. This is an exciting opportunity to become part of a collaborative team at a pivotal stage in its HR technology journey. The organisation is implementing … Workday as its core HR platform, replacing multiple legacy systems with a single, integrated solution. You'll play a key role throughout the implementation and continue supporting, developing and optimising the platform once it's live. The Role As an HRIS Analyst, you'll support the ongoing ...

Senior Java Developer

Hiring Organisation
Halian Technology Limited
Location
Bracknell, Berkshire, South East, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£85,000
trusted technology partner to major NHS Trusts , with its platform now widely used by clinicians across the UK. Replacing outdated legacy systems with intuitive, user-centric tools, they are improving how healthcare teams operate and ultimately enhancing patient outcomes. With multiple industry awards , major contracts secured … platform and wider engineering function. Youll join a high-performing team of 20+ engineers , working on a mix of greenfield and evolving systems , contributing across a full-stack, microservices architecture . This is more than just a coding role its an opportunity to build technology that directly improves lives ...

Director of Engineering

Hiring Organisation
Page Executive
Location
London, United Kingdom
Salary
£ 100 K
quality.Specific responsibilities are as follows:Engineering Leadership & DeliveryLead multiple engineering teams responsible for:Public-facing web platforms, customer-focused channels and digital services.Internal business systems and integrations.CRM and Dynamics-based solutions.Ensure predictable, high-quality delivery against agreed roadmaps and priorities.Balance pace, quality, and sustainability in a charity context.Establish clear … Dynamics-based solutions.Track record of improving engineering delivery, quality, and reliability.Familiarity with cloud-based platforms and modern integration patterns.Experience modernising legacy systems pragmatically.Proven experience leading continuous improvement initiatives across a complex organisation.Experience working in complex, regulated, or mission-critical environments.Strong analytical and problem-solving skills, excellent communication ...

Test Environment Manager

Hiring Organisation
Euroclear
Location
United Kingdom
Salary
£ 70 K
seeking an experienced Test Environment Manager to drive the test environment management to support a large-scale transformation programme moving from a legacy monolithic setup to a microservices-based set up using Java/Kafka/OpenShift. This role will also require also support/management … planning and scheduling of test environments for project workProviding this for OpenShift/Kafka based environments (inclduign hands on) and legacy systems Support and Troubleshooting:Provide ongoing support to squads & troubleshooting problemsAct as a liaison between development, QA, and support teams to address and resolve environment-related ...

Finance Transformation Manager

Hiring Organisation
Stanton House
Location
London, United Kingdom
Salary
£ 80 K
evolving a global finance function within a complex, multi-entity organisation. This role sits at the intersection of financial operations, commercial insight, and systems architecture. You will be instrumental in consolidating data across a complex legacy systems landscape, building commercial intelligence platforms, and stress-testing financial … design and implement governance frameworks, processes, and methodologies, the real impact comes from validating what works; challenging assumptions with rigor, and build systems that connect sources into a single source of truth for the business. Key Responsibilities:Design and deliver a consolidated financial reporting platform, bringing together data from ...

Lead Software Engineer

Hiring Organisation
Leonardo DRS
Location
Basildon, Essex, United Kingdom
Salary
£ 70 K
architectural design, risk mitigation, or technical governance.Demonstrated ability to mentor and coach engineers, uplifting capability and promoting software engineering excellence.Familiarity with legacy systems, export controls, interoperability, and long-term product evolution.Ability to collaborate across disciplines, working closely with systems, hardware, and firmware teams to ensure coherent ...