1 to 25 of 34 Remote/Hybrid Legacy Systems Jobs in London

engineering performance across delivery, quality and technical standards, while helping shape the next phase of platform evolution. This includes modernising legacy systems, driving adoption of modern technologies and embedding AI-led efficiencies into both internal engineering workflows and customer-facing products. The Role Reporting directly … high-performing engineering function across multiple disciplines Own engineering delivery, release quality and technical execution Drive platform modernisation and migration from legacy systems to modern architectures Build scalable, modular, service-oriented systems and technical standards Oversee DevOps, infrastructure reliability, monitoring and release processes Foster strong collaboration ...

scale financial data platform. You'll be working with the technology team, supporting a core platform modernisation initiative. Our environment combines long-established enterprise systems and legacy components with modern cloud-based services running on AWS. The platform processes high-volume structured financial data and underpins both … internal systems and customer-facing products. A substantial portion of the platform is built on large SQL Server data estates, making strong SQL expertise non-negotiable. You will play a key role in modernising core systems, improving performance and reliability, and delivering scalable services for the next generation ...

business needs require. Core areas of depth may include one or more of: Web/Front-end engineering Java/AWS backend and distributed systems React Native Android (Kotlin) iOS (Swift) Successful candidates demonstrate deep expertise in at least one of these areas while maintaining practical experience and willingness … across others. This role suits engineers who are highly autonomous, delivery-focused, and capable of owning technical design and execution for complex features and systems, while contributing to team growth and technical direction. What you’ll do: Engineering delivery & technical ownership Design, build, and deliver high-quality software across ...

live trading. This is not a greenfield role. Success comes from adding value immediately within a large, demanding codebase — understanding existing Java and .NET systems well enough to reason about trade-offs, guide refactoring or selective rewrites, and make sound architectural decisions under pressure. The roadmap you produce … themselves. A strong candidate will actively embrace agentic AI tooling as a force multiplier — not just to accelerate development, but to rapidly comprehend unfamiliar systems, trace behaviour across services, uncover hidden dependencies, and validate architectural thinking. Combined with deep equities domain knowledge and experience building large-scale distributed systems ...

data workstream. Requirement for someone to lead the full data agenda across the programme lifecycle working across legacy systems, Workday, integrations and reporting requirements. Workday Data Lead, key responsibilities: Lead data workstream across full programme lifecycle Define and deliver data strategy - data plan for Workday Financials implementation … Understanding of finance data structures including master data Experience defining and managing data strategies and data plans Previously worked across multiple legacy systems and data sources Overseeing and coordinating technical teams Strong understanding of data quality and data controls Reasonable Adjustments: Respect and equality are core values ...

Title: Senior Systems Engineer (eDV Clearance required) Location: Hybrid In London Employment Type: Permanent Salary: Up to £98,000 + package Start Date: Immediate Industry: IT Services & Consulting We’re supporting a specialist consultancy delivering cutting-edge programmes across the UK Defence and National Security space. They’re looking … Senior Systems Engineer to lead the delivery of complex, mission-critical systems across secure environments. This is a high-impact role where you’ll bridge strategy and engineering - shaping solutions that integrate cloud, data, and AI technologies into secure, safety-critical systems. Senior Systems Engineer – Key Responsibilities ...

Senior Systems Integration Consultant (.NET, Azure, Data, MIS) Job Description Contract Length: 3 months Start: Immediate Day Rate: £400-£500 per day IR35: Outside IR35 Location: Hybrid, predominantly remote Overview We are looking for a senior Systems Integration Consultant to step into a live environment and stabilise … ensure the platform is fully operational. Key Responsibilities Stabilise and optimise Mitratech platform integration Extract and migrate data from legacy .NET systems Build and troubleshootintegrations across: Timesheet systems HR workflows including Excel exports Internal operational systems Implement workflow automation and triggers Debug live production issues ...

extend About the Role We’re partnering with a financial client that’s undertaking a large-scale data transformation, modernising legacy systems and building a unified analytics platform in the cloud. As part of this initiative, you’ll play a key role in developing and optimising … data models, ensuring performance, accuracy and user accessibility. Contribute to the migration of legacy SQL Server (SSIS/SSAS/SSRS) systems into a modern Snowflake/Power BI environment. Work collaboratively with business users to understand requirements, translate them into technical solutions and deliver robust, scalable ...

Design: Help define the enterprise data architecture vision, standards, and roadmap. Aid in the design the initial data platform to support integration with core systems and future enterprise-scale data needs. Evaluate, recommend, and drive the adoption of modern data technologies, tools, and patterns (e.g., data lakehouse, ETL/… communication and stakeholder engagement skills, with the ability to influence at senior levels. Comfortable driving a data agenda in environments with legacy systems, evolving requirements, and strong regulatory constraints. Desirable Skills: Experience working with finance systems and associated data structures. Familiarity with cloud platforms (Azure ...

individuals as all work will require extensive collaboration with engineers and stakeholders across many teams. Key Responsibilities: Collaborate with engineers of legacy systems to understand what data is available and the form it takes Design queries & scripts to extract and transform data from … based workflows, code reviews, and CI/CD practices. Preferred Qualifications: Have used Azure cloud services previously Experience with streaming/event-driven systems e.g., Kafka/Kinesis Experience with infrastructure as code e.g., Terraform and containerization e.g., Docker/Kubernetes Familiarity with data governance, cataloging, lineage, and privacy ...

individuals as all work will require extensive collaboration with engineers and stakeholders across many teams. Key Responsibilities: Collaborate with engineers of legacy systems to understand what data is available and the form it takes Design queries & scripts to extract and transform data from … based workflows, code reviews, and CI/CD practices. Preferred Qualifications: Have used Azure cloud services previously Experience with streaming/event-driven systems e.g., Kafka/Kinesis Experience with infrastructure as code e.g., Terraform and containerization e.g., Docker/Kubernetes Familiarity with data governance, cataloging, lineage, and privacy ...

ontology capabilities. Experience in multi-cloud and data migration environments: Experience working with data environments in Microsoft Asure, AWS, and legacy systems, and a proven ability to consolidate and migrate data processes and workloads into Palantir Foundry as part of a broader data strategy. Data-driven business ...

Title: Engineering Lead (C++) - Low Latency/Trading Systems Location: London (Hybrid) Overview Our client is a global fintech operating at scale across trading, risk, and market connectivity. They are hiring an Engineering Lead (C++) to take ownership of a business-critical platform sitting at the heart of real … Define and deliver a clear technical and product vision Improve release processes, reducing downtime and increasing deployment frequency Drive modernisation across legacy systems, infrastructure, and tooling Collaborate closely with trading, quant, and risk stakeholders Remain hands-on, contributing to production-grade C++ code What They're Looking ...

most ambitious financial services programmes. They work closely with business and technology leaders to drive strategic change, from platform modernisation and core systems reengineering, to cloud adoption and integration overhaul. Your Role You’ll be part of a highly credible, expert-led team shaping complex solutions across the full … technology stack. Whether modernising legacy systems, enabling cloud-first strategies, or improving end-to-end integration, you’ll bring structure, clarity, and delivery alignment to everything you do. What You’ll Be Doing as a Solution Architect: Lead the design and implementation of end-to-end solutions ...

Technical Leadership Own the architecture of the company's data platform, ensuring scalability, reliability, and security. Drive modernisation by transitioning from legacy systems to a lean, scalable platform. Act as a lead expert for technologies such as AWS, DBT, Airflow, and Databricks. Establish best practices for data ...

brand-new senior IC role within a growing international design team. You’ll play a key role in reimagining legacy systems into a modern web platform, shaping intricate workflows, influencing product direction, and having a genuine impact on how specialist users perform their jobs. This is proper … genuinely enjoys untangling complexity - you light up when faced with messy, multi-step workflows and take pride in bringing clarity and structure to challenging systems Someone who is deeply curious about users - you don’t jump to solutions; you immerse yourself in the problem space, especially where access ...

Hybrid) Sector: Specialty Insurance & Reinsurance Type: Permanent | Senior Leadership Are you a future-focused Solution Architect who thrives on tackling complex challenges, modernising legacy ecosystems, and influencing enterprise-wide technology strategy? A global, financially rock-solid specialty insurer is expanding its Architecture function and is looking … Opportunity Stands Out Enterprise influence – You’ll shape the roadmap for multiple business domains and play a key role in retiring legacy systems and designing modern, modular, cloud-ready platforms. True architecture ownership – From concept to approval, you are the accountable design authority for critical initiatives. Innovation ...

enterprise architecture strategy for a large-scale transformation of customer, billing and revenue platforms Lead the move away from legacy systems into a modern, cloud-first environment that improves performance, scalability, and customer experience Define the target architecture and set a clear, deliverable roadmap from current state ...

testing across thier internal legacy .NET application. This is an initial 3-month contract focused on maintaining quality and stability across existing systems during ongoing change and maintenance activity. Responsibilities: Manual testing of legacy .NET applications Creation and execution of test cases, test scenarios … software development lifecycle and testing methodologies Experience using defect tracking and test management tools Experience identifying and validating application vulnerabilities within legacy systems Supporting vulnerability assessments and working with development teams to verify findings Tracking, retesting, and validating remediation activities to ensure issues are fully resolved Collaborating ...

testing across thier internal legacy .NET application. This is an initial 3-month contract focused on maintaining quality and stability across existing systems during ongoing change and maintenance activity. Responsibilities: Manual testing of legacy .NET applications Creation and execution of test cases, test scenarios … software development lifecycle and testing methodologies Experience using defect tracking and test management tools Experience identifying and validating application vulnerabilities within legacy systems Supporting vulnerability assessments and working with development teams to verify findings Tracking, retesting, and validating remediation activities to ensure issues are fully resolved Collaborating ...

Product Manager – Digital & Asset Systems The Opportunity A leading organisation is delivering a major long-term infrastructure and sustainability programme. We’re looking for a Product Manager to take ownership of critical digital and data systems that support complex assets, large-scale projects, and multi-organisation collaboration. This … that enable efficiency, compliance, and smarter decision-making. What You’ll Be Doing Manage digital products spanning asset management, GIS, and programme/project systems . Shape and deliver a multi-year roadmap that aligns multiple stakeholders under one data strategy. Lead upgrades, migrations, and integrations of legacy ...

single specialization (T-shaped skillset) — preferred but not strictly mandatory. - Experience integrating front-end applications with APIs and backend services. - Solid understanding of distributed systems and cloud environments (AWS preferred). - Familiarity with CI/CD pipelines, automated testing, and modern delivery practices. - Experience with performance optimisation, debugging … observability tools. - Exposure to legacy systems and modernisation projects is advantageous. - Knowledge of secure coding practices and common security standards. - Experience mentoring engineers or influencing technical decisions is beneficial but not mandatory. ...

sitting on the IT Senior Leadership Team, you will play a key role in driving CTRM transformation, modernisation of legacy systems, and enabling a scalable, secure, and data-driven enterprise architecture. Role & Responsibilities: Lead enterprise architecture strategy, principles, and target-state roadmap across applications, data, integrations … with integration architectures (APIs, microservices, event streaming). Strong ability to simplify complex technology landscapes into clear, executable roadmaps. Experience with CTRM/ERP systems and cloud platforms. Excellent stakeholder management across technical and executive audiences. Proven experience building or leading architecture governance frameworks. Package: £150–160K base (depending ...

Excel and other tools Strong Python, R, SQL skills and experience Experience extracting and collating data from multiple legacy systems Experience with Data Reporting tools (e.g. Tableau/PowerBI) Experience working in an Agile and dynamic delivery environment in which change and ambiguity often exist Soft skills ...

Engineering, Head of Payments, etc.) to position digital transformation initiatives and custom technology solutions. Identify client challenges around legacy systems, payments infrastructure modernization, platform engineering, data and AI, and cloud adoption, and position Endava’s services as the solution. Lead the development of proposals, solution positioning ...