1 to 25 of 33 Permanent Legacy Applications Jobs in London

Application Analyst (Technical) - Application Modernisation

Hiring Organisation
Red King Resourcing
Location
City of London, London, United Kingdom
Employment Type
Permanent
Salary
£360 - £370/day
Technical) to join a major application modernisation programme. This role will focus on the discovery, assessment and transformation of legacy business-critical applications, supporting their migration into modern .NET-based solutions hosted within Azure and OpenShift/containerised environments. This is an excellent opportunity for a technically … minded analyst who enjoys understanding legacy applications, identifying dependencies and risks, and helping shape technology modernisation strategies that align business and technical objectives. You will work closely with application owners, business stakeholders, architects, developers, infrastructure teams and DevOps specialists to support decision-making throughout the application modernisation ...

Application Analyst (Technical) - Application Modernisation

Hiring Organisation
Red King Resourcing
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£360.00 - £370.00 per day
Technical) to join a major application modernisation programme. This role will focus on the discovery, assessment and transformation of legacy business-critical applications, supporting their migration into modern .NET-based solutions hosted within Azure and OpenShift/containerised environments. This is an excellent opportunity for a technically … minded analyst who enjoys understanding legacy applications, identifying dependencies and risks, and helping shape technology modernisation strategies that align business and technical objectives. You will work closely with application owners, business stakeholders, architects, developers, infrastructure teams and DevOps specialists to support decision-making throughout the application modernisation ...

Senior Forward Deployment Engineer

Location
Greater London, England, United Kingdom
effective automated test suites, remediating security vulnerabilities, performing dependency and reachability analysis, upgrading Java and NPM runtimes, modernizing Spring and legacy middleware applications, improving CI/CD pipelines, containerizing applications, automating deployments, and introducing standard observability and resilience patterns. The Expert FDE is expected to lead … operating systems to supported versions. Establish sustainable dependency-management processes with continuous library updates using Renovate or equivalent tools. Modernize legacy applications and middleware stacks, including those deployed on WebSphere or WebLogic. Containerize applications using Docker and support deployment to OpenShift. Improve source control, branch management ...

Machine Learning Engineering Lead

Hiring Organisation
Hackajob Ltd
Location
City of London, London, United Kingdom
Employment Type
Permanent
responsible for developing and supporting business-critical platforms used to create, manage, publish, and analyse legal and regulatory content. Our work spans modern web applications, cloud services, content migration programmes, publishing platforms, reporting solutions, and operational tooling. We partner with editorial, product, and technology stakeholders to deliver high-quality … processes that are reliable, traceable, and governed. Integrate AI/ML capabilities with enterprise systems, APIs, databases, data platforms, content repositories, legacy applications, internal services, and AWS-hosted services. Establish evaluation and quality controls for accuracy, groundedness, citation quality, hallucination risk, agent task success, latency, cost, reliability ...

Cloud Architect

Hiring Organisation
Next Ventures
Location
London Area, United Kingdom
adoption portal, they will rely heavily on your guidance. You will define and implement Azure and GCP architectures, support migration of legacy applications, modernise core banking platforms, and ensure cloud solutions meet regulatory, operational, and security requirements. Key Responsibilities 🌐 Cloud Strategy & Architecture Define target architectures for cloud … standards. Align cloud platform capabilities with business, regulatory, and operational needs. Provide architectural leadership across transformation programmes. 🔧 Application Modernisation Assess legacy applications and define migration strategies: Rehost Replatform Refactor Cloud‐native transformation Support adoption of PaaS/SaaS aligned with the target operating model. Partner with engineering ...

Lead Software Engineer - Risk/ FORT BUS MGMT

Location
Greater London, England, United Kingdom
from business users and translate business needs into technical solutions; communicate technical constraints in business terms. Maintain and enhance existing and legacy applications when required. Required qualifications, capabilities, and skills Minimum 10 years of hands‐on Python development experience. Strong preference for candidates with a financial services … Capability to translate business needs into technical solutions and explain technical constraints in business terms. Willingness to understand and work on legacy applications when required. Preferred qualifications, capabilities, and skills Prior experience with financial risk stack platforms such as SecDB, Quartz, or Athena. Knowledge of rates products ...

Test Environment Manager (10105)

Location
Greater London, England, United Kingdom
Flexible Role Overview We are seeking an experienced Senior Test Environment & Platform Manager to support a major enterprise technology transformation, moving from a legacy monolithic landscape towards a modern microservices-based architecture using Java, Kafka and OpenShift. This is a highly technical Test Environment Management position combining environment … Work closely with architects, engineering teams, developers, QA and delivery squads to understand environment requirements. Ensure environments can effectively support both legacy applications and new microservices-based services. Define environment standards, processes, governance and operating models. Environment & Platform Management Support the design, provisioning, configuration, maintenance and decommissioning ...

Test Environment Manager (10105)

Hiring Organisation
Salt Search
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£500.00 - £850.00 per day
Flexible Role Overview We are seeking an experienced Senior Test Environment & Platform Manager to support a major enterprise technology transformation, moving from a legacy monolithic landscape towards a modern microservices-based architecture using Java, Kafka and OpenShift . This is a highly technical Test Environment Management position combining … Work closely with architects, engineering teams, developers, QA and delivery squads to understand environment requirements. Ensure environments can effectively support both legacy applications and new microservices-based services. Define environment standards, processes, governance and operating models. Environment & Platform Management Support the design, provisioning, configuration, maintenance and decommissioning ...

Java/React Developer- London

Hiring Organisation
FDM Group
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£50,000 - £70,000 per annum
trade and asset servicing operations across global financial markets. You will play a key role in the design, development and enhancement of enterprise-grade applications used to manage complex asset servicing processes, corporate actions, income processing, custody operations and client reporting. Working within an Agile delivery environment, you will … fellow engineers to deliver innovative solutions that improve operational efficiency, client experience and platform scalability. Responsibilities Design, develop and maintain scalable full stack applications using Java and React. Build and enhance microservices and RESTful APIs supporting Asset Servicing platforms. Develop responsive user interfaces using React, TypeScript and modern front ...

Full Stack Java Engineer

Location
Greater London, England, United Kingdom
systems into modern Java/Angular solutions. Design, build, and optimise backend services using Java, Spring Boot, and SQL. Develop responsive frontend applications with Angular, RxJS, and NgRX. Implement CI/CD pipelines and DevOps best practices. Collaborate with business stakeholders to translate requirements into scalable solutions. … Maintain high code quality through testing, automation, and peer reviews. Support multiple applications within a complex platform environment. Must-Have Skills Java 11+ (Java 17+ preferred) Spring Boot Angular 14+ (Angular 18 preferred) Strong SQL expertise RxJS and NgRX Docker Git CI/CD and DevOps practices Experience working ...

Fullstack Developer

Hiring Organisation
Randstad Digital
Location
London, United Kingdom
Employment Type
Permanent
ambiguity. You care more about solving the problem effectively than being strictly tied to one programming language. Bonus Points Experience migrating legacy applications (e.g., Ruby/Python to Rust). Contributions to open-source projects in Rust, Ruby, or Python. Familiarity with WebAssembly (Wasm). … Randstad Technologies Ltd is a leading specialist recruitment business for the IT & Engineering industries. Please note that due to a high level of applications, we can only respond to applicants whose skills & qualifications are suitable for this position. No terminology in this advert is intended to discriminate against ...

Solutions Architect (Dynamics 365)

Hiring Organisation
Tria
Location
City of London, London, United Kingdom
Employment Type
Permanent
Salary
£90000 - £100000/annum + Holiday + Pension
estate. This organisation is investing heavily in modernising its technology environment, including the implementation of Dynamics 365, Microsoft Fabric and the replacement of legacy systems. You'll join an established transformation team and act as the key Solutions Architect, helping define how systems, platforms and integrations fit together … across Dynamics 365, Azure, Power Platform, Microsoft Fabric and wider enterprise systems * Design integrations and support the migration and decommissioning of legacy applications * Work with development teams, technical specialists and external suppliers to turn architecture into deliverable solutions * Provide technical leadership while helping shape the longer-term ...

Tech Lead - AWS Cloud Migration

Location
Greater London, England, United Kingdom
ROLE As an Tech Lead on the AWS Cloud Migration, you will provide technical leadership across the refactoring of legacy applications for a Tech Debt programme. Embedded alongside client teams and a broader programme network, you will guide technical design, ensure architectural alignment, and assure the quality … Assurance: Reviewing and assuring the quality of critical technical artefacts, codebases, and architectural documentation. Refactoring Strategy: Guiding the architectural breakdown and refactoring of legacy technical debt into modern, scalable cloud components. Cross-Functional Collaboration: Partnering directly with client teams, specialists, and external suppliers across a large-scale programme ...

Software Engineer, DTN

Location
Greater London, England, United Kingdom
distributed system on Kubernetes Participate in the entire application lifecycle, focusing on coding and debugging Manage cutting-edge technologies to improve legacy applications Collaborate with Front-end developers to integrate user-facing elements with server side logic Gather and address technical and design requirements Follow emerging technologies … onboarding process for new customers, providing guidance and support to ensure successful integration of their existing and future systems Optimizing the performance of applications for full-scale production deployments Required Qualifications: Bachelor’s degree in computer programming, computer science, or a related field Strong technical communication skills, and ability ...

Business Analyst - Commodities, Platform, Process

Hiring Organisation
Hays Specialist Recruitment Limited
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£550.00 - £650.00 per day
delivery of a significant strategic transformation programme, focusing on both the implementation of a new strategic platform and the analysis of legacy applications as part of a wider technology modernisation initiative. You will work closely with business stakeholders, operational teams, technology partners, and project resources to ensure … Analysis, Process Improvement, Change or Transformation roles - max experience up to 7-8 years Experience within Commodities is a must Experience working with legacy systems Platformmigration experience Financial services experience Experience gathering and documenting business requirements, process maps, and stakeholder needs. Good understanding of operational process ...

Lead Risk Software Engineer LDN

Location
Greater London, England, United Kingdom
Capability to translate business needs into technical solutions and explain technical constraints in business terms Willing to understand and work on legacy applications when required Preferred Qualifications Prior experience with other financial risk stack platforms such as SecDB, Quartz, or Athena Knowledge of rates products including Swaps ...

Lead Risk Software Engineer LDN

Location
Greater London, England, United Kingdom
Capability to translate business needs into technical solutions and explain technical constraints in business terms Willing to understand and work on legacy applications when required Preferred Qualifications Prior experience with other financial risk stack platforms such as SecDB, Quartz, or Athena Knowledge of rates products including Swaps ...

Lead Risk Software Engineer LDN

Hiring Organisation
Hackajob Ltd
Location
South West London, London, United Kingdom
Employment Type
Permanent
Capability to translate business needs into technical solutions and explain technical constraints in business terms Willing to understand and work on legacy applications when required Preferred Qualifications Prior experience with other financial risk stack platforms such as SecDB, Quartz, or Athena Knowledge of rates products including Swaps ...

Lead Risk Software Engineer LDN

Location
Westminster, West End, United Kingdom
Capability to translate business needs into technical solutions and explain technical constraints in business terms Willing to understand and work on legacy applications when required Preferred Qualifications Prior experience with other financial risk stack platforms such as SecDB, Quartz, or Athena Knowledge of rates products including Swaps ...

Tech PM - Application Modernisation (Azure/OpenShift)

Location
City Of London, England, United Kingdom
King Resourcing is seeking an experienced Technical Project Manager to lead the modernisation of legacy applications to .NET solutions deployed in Azure and OpenShift. Based in London, the role is a 4-6 month contract with hybrid on-site/remote work. You will bridge business ...

Remote Tech Lead for AWS Cloud Migration

Location
Greater London, England, United Kingdom
drive the AWS Migration for client applications. Remote, UK with occasional travel to London or Manchester. You will provide technical leadership across refactoring legacy apps, guiding design and ensuring architectural alignment within a broad programme. The role emphasizes collaboration with client teams and suppliers while leveraging Java frameworks ...

Technical Implementation Lead

Location
Greater London, England, United Kingdom
Intelligence (BIL) and Data Services (DSL) Leads and developers or external consultants within the Technical Solutions department. The TIL manages a team of Legacy Application Support Consultants and Implementation Analysts. Key interactions include Business Intelligence - to ensure that upgrades and releases support and enhance BI initiatives Data Services ...

Lead Oracle Database Administrator

Location
Greater London, England, United Kingdom
DevOps practices . The Opportunity You'll join an established DBA team responsible for a large Oracle estate hosted in AWS , supporting critical applications and services. The environment includes Oracle E-Business Suite R12, SOA, WebLogic, Portal, IAM, OHS and APEX . As Lead Oracle DBA, you'll combine … environments . Experience with Flyway or similar database version-control tools . Experience supporting large-scale legacy technology estates. Experience migrating Oracle applications or databases into AWS. Experience with Oracle APEX . The Environment You'll be joining an experienced DBA team supporting a complex Oracle estate ...

System Upgrade & Release Lead

Location
Greater London, England, United Kingdom
with minimal business disruption across our platforms. You will report to the Technical Solutions Director and lead a team of Implementation Analysts and Legacy Application Support Consultants. You will collaborate with Enterprise & Solution Architect, BI, Data Services, and developers, align with vendor strategies, and translate complex tech concepts ...

Openshift /Kafka Test Engineer - Banking Client

Hiring Organisation
Salt Search
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
Salary negotiable
infrastructure projects as well as carrying out hands on test execution. The role will span our transformation program where we are moving from legacy application so to OpenShift/Kafka based micro services and our legacy applications. What you will be doing: Contribute to Infrastructure projects ...