1 to 25 of 97 Remote/Hybrid Legacy Systems Jobs in London

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 ...

services sector. As a Staff Engineer, you'll lead the design and delivery of high impact technology projects, helping clients modernise legacy systems, migrate to AWS and introduce modern CI/CD and cloud deployment practices. You'll combine hands-on engineering with technical leadership, problem solving … projects and client engagements from design through to delivery Developing scalable Java applications using Spring Boot and microservices Modernising and migrating legacy systems to AWS Designing and working with REST APIs and distributed systems Introducing and improving CI/CD and DevOps practices Providing technical expertise ...

craft experiences that feel intuitive, expressive, and unmistakably Spotify. This position sits at the heart of Spotify’s Content Platform, responsible for the systems that define, structure, and govern content across the platform. Our mission is to provide a trusted, consistent source of truth so content can be reliably … managed and reused across every Spotify experience. We build and operate the core systems and workflows that ensure content is accurate, complete, and available, from APIs and lifecycle orchestration through to content quality and integrity. As Spotify’s content ecosystem continues to grow in scale and complexity across ...

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 ...

services sector.As a Principal Backend Engineer, you'll lead the design and delivery of high impact technology projects, helping clients modernise legacy systems, migrate to AWS and introduce modern CI/CD and cloud deployment practices. You'll combine hands-on engineering with technical leadership, problem solving … Leading technical projects and client engagements from design through to deliveryDeveloping scalable Java applications using Spring Boot and microservicesModernising and migrating legacy systems to AWSDesigning and working with REST APIs and distributed systemsIntroducing and improving CI/CD and DevOps practicesProviding technical expertise and guidance to clients ...

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 ...

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 ...

making a tangible difference every day, we'd like to hear from you. ABOUT THE ROLE As a Senior Specialist – Mission Critical Radio & Cellular Systems , you will provide technical leadership for the operational support, maintenance and continual improvement of Heathrow Airport's critical communications infrastructure. Working across a diverse … technology estate spanning legacy and modern radio systems, RF over Fibre Distributed Antenna Systems (DAS), public and private cellular infrastructure and IP-based communications platforms, you'll lead the resolution of complex technical issues while helping shape the future direction of operational communications at Heathrow. This ...

impact, efficient use of resource, and alignment to business structures* Drive 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 … seen as the engineering role model for the organization* Ability to work directly with trading and quant teams* Proven track record of building new systems, replacing legacy systems and renovating existing systems* The candidate will have a strong systems (software, hardware, networks) knowledge required ...

energy, logistics, manufacturing. These sectors are essential to our economy and daily lives, yet they are held back by inefficiencies, fragile legacy systems, and decades-old ways of working. This is not just a business problem; it is a societal one. When grids fail, supply chains stall … operates software Work within and contribute to our Go/Python/TypeScript codebase. Own and evolve our build, infrastructure-as-code, and delivery systems (e.g. Bazel, Terraform, CI/CD), optimising for scalability, hermeticity, and developer velocity. Implement and own security controls, identity and access management systems ...

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 ...

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 ...

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 ...

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 ...

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 … 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 ...

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 ...

join our DBA team and support a major UK public sector transformation programme . This is an opportunity to work on critical systems while helping modernise a complex Oracle estate through AWS, automation and DevOps practices . The Opportunity You'll join an established DBA team responsible … opportunity to work across traditional database operations, cloud modernisation and automation. We're looking for someone who is comfortable working with legacy systems but is passionate about automation, reliability, performance and continuous improvement . If you're an experienced Oracle EBS DBA with strong AWS and DevOps ...

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 ...

collaborative and supportive working environment, and the opportunity to develop your career within our Technology & Transformation team while gaining hands-on experience across multiple systems, businesses, and technology disciplines. Here is a look at some of the things you will be doing Supporting technology implementations across Complii businesses, assisting … configuration and validation, and helping ensure new ways of working align with our Group-wide operating model Supporting data migration from legacy systems, gathering, cleansing, transforming, and validating data, assisting with system imports and reconciliation, and identifying and resolving data quality issues to support accurate and successful ...

migration, operational risk remediation, regulatory compliance, and platform modernization. As a pragmatic and hands-on architect, you will work within complex legacy ecosystems while implementing scalable, resilient, and efficient solutions. By collaborating with Product, Operations, and Engineering teams, you will ensure that transformation aligns with business priorities while … front-end technologies such as Angular Experience with CI/CD pipelines, Terraform, and containerization (Docker/Kubernetes) Ability to navigate legacy systems while promoting modernization Strong understanding of risk management, security, and compliance requirements Excellent stakeholder engagement and communication skills Nice to have Experience in financial ...

join a strategic application modernisation programme. This role sits within a technology team responsible for evolving critical business applications, supporting a transition from legacy desktop solutions to modern web-based and cloud-enabled platforms. The successful candidate will work across the full software development lifecycle, contributing … Ability to work independently in a fast-paced environment Collaborative mindset and willingness to mentor junior developers Comfortable balancing support of legacy systems alongside modernisation initiatives GCS is acting as an Employment Business in relation to this vacancy. ...

Developer - Cloud Platform & AI We're recruiting for a Senior Software Developer to join a small, highly capable technology team delivering a major legacy-to-cloud transformation. The business is moving its core booking platform to an Azure and modern .NET solution, while also building an AI-powered … Blazor experience. Strong Azure experience, including App Service or Container Apps, Azure SQL, API Management and Azure DevOps pipelines. Experience modernising legacy systems, ideally using strangler-fig or similar incremental migration approaches. Good understanding of REST API design, microservices and event-driven architecture patterns. Practical ...

Developer - Cloud Platform & AI We're recruiting for a Senior Software Developer to join a small, highly capable technology team delivering a major legacy-to-cloud transformation. The business is moving its core booking platform to an Azure and modern .NET solution, while also building an AI-powered … Blazor experience. Strong Azure experience, including App Service or Container Apps, Azure SQL, API Management and Azure DevOps pipelines. Experience modernising legacy systems, ideally using strangler-fig or similar incremental migration approaches. Good understanding of REST API design, microservices and event-driven architecture patterns. Practical ...

SwiftKey before joining us. You’ll work with him closely on the architecture: challenging decisions, shaping them, and turning ambitious AI ideas into systems that hold up in production. This is a hands‐on role. You’ll be in the code, the pipelines, the databases and the cloud infrastructure … production AI models. Work hands‐on across the codebase, data pipelines, databases and cloud infrastructure to improve performance, scalability and reliability. Assess existing systems against real requirements, including performance, freshness, reliability, security and cost, and shape a practical plan for change. Modernise constrained legacy components incrementally, behind ...

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 ...