26 to 50 of 86 Legacy Systems Jobs in London

products. With a strong reputation for solving complex technical challenges, they work with leading organisations to deliver AI-enabled solutions, modernise legacy systems, and build high-performance applications. Their teams are distributed globally and operate in a highly collaborative, engineering-led environment. The Role As a Technical ...

latest AI tools and models, partner technical teams, and early capability previews that the wider market does not. We are deploying production AI systems into the world's most complex organisations across Financial Services, Energy, and Healthcare. We exist to make AI a genuine competitive advantage for our clients … engagements at some of the most complex organisations in the UK. Technically, commercially, and in the room with engineering leaders who have built serious systems and are not easily impressed. What You Will Do Lead engagements that transform how enterprise engineering organisations build software - from discovery and assessment through ...

Risk Management frameworks Participate in Show and Tell sessions with stakeholders Troubleshoot, debug, and enhance existing applications Evaluate and improve legacy systems, including reprogramming and adding new features Produce technical documentation, user guides, and training materials Collaborate with IT teams to define specifications for new development Provide ...

Level 1 (Level 2 desirable) Experience delivering enterprise-scale integrations Integration experience with Salesforce, SAP, ServiceNow, AWS/Azure, databases, and legacy systems Knowledge of API security (OAuth 2.0, JWT, mTLS/SSL/TLS) Familiarity with CloudHub v2.0, Runtime Fabric, and hybrid architectures Why Apply Fully ...

Level 1 (Level 2 desirable) Experience delivering enterprise-scale integrations Integration experience with Salesforce, SAP, ServiceNow, AWS/Azure, databases, and legacy systems Knowledge of API security (OAuth 2.0, JWT, mTLS/SSL/TLS) Familiarity with CloudHub v2.0, Runtime Fabric, and hybrid architectures Why Apply Fully ...

Role Youll lead multiple engineering teams and delivery partners, driving the build and integration of modern, cloud-based platforms while transitioning from legacy systems. This is not a hands-on coding role , but equally not a pure programme role youll sit at the intersection of engineering, architecture ...

Role You’ll lead multiple engineering teams and delivery partners, driving the build and integration of modern, cloud-based platforms while transitioning from legacy systems. This is not a hands-on coding role , but equally not a pure programme role — you’ll sit at the intersection of engineering ...

boarding of new customers in the UK Drive structured implementation processes with clear milestones Support and guide customers in migrating from legacy systems and processes (including Distinctive Systems) Map existing workflows and translate them into the platform Ensure successful go-live with minimal operational disruption Customer … from working within or alongside a coach operator Strong understanding of how a coach operator runs: sales, bookings, planning, and operations Familiarity with Distinctive Systems and how it is used in practice Project management, preferably within the implementation of technology Interest in and ability to work with technology ...

your career at the intersection of technology, mathematics, and finance Join an elite global trading firm where innovation drives everything — no legacy systems, no bureaucracy, just cutting-edge tech and world-class mentorship . You’ll work on greenfield projects from day one, collaborating with exceptional engineers … quants, and researchers to build the systems and models shaping the future of global trading. 🔧 What You’ll Do 🧠 Design and enhance advanced trading systems and analytics platforms 📊 Develop and implement your own quantitative models and research ideas 🤝 Collaborate closely with top technologists, quants, and portfolio managers 🚀 Learn ...

Systems Analyst (18‐Month FTC) London | Hybrid Working My client, a highly regarded UK law firm, is seeking a HR Systems Analyst to join its HR team on an 18‐month fixed‐term contract . This role can be based in either London or Cardiff and will play … part in a wider transformation programme across HR systems and processes. The firm is investing significantly in people technology and modernisation, and this position sits at the centre of that change. It offers an opportunity to work within a collaborative HR function while gaining hands‐on exposure ...

monthsIR35: Outside IR35Location: Remote The Role:· Support the redesign and rebuild of a core data mart, ensuring accuracy and reliability vs legacy systems· Review, understand, and improve existing dbt models (hands-on development)· Perform SQL-based analysis and validation across legacy and new data marts … Troubleshoot data issues and support data quality improvements· Validate data outputs and ensure consistency across systems· Build SQL logic to validate data feeding into Tableau dashboards· Work closely with Analytics Engineers to refine models and improve overall data structure Key Skills:· Strong SQL experience working with complex data models ...

developing and delivering a range of projects for clients, mainly within the financial services sector and with a focus on migrating legacy systems to AWS and introducing CI/CD pipelines and cloud deployments. You'll join a collaborative team with a focus on engineering best practice … continuous improvement of client systems; you will have lots of business and client exposure, leading projects and providing expertise. Location/WFH: There's a hybrid work from home policy with three days a week in the London, City office (or at client sites), you'll join a friendly ...

will assume day-to-day ownership of the firm’s infrastructure estate. With a clear mandate to migrate from on-premise legacy systems to a cloud-first model, this role demands both the practical expertise to manage existing environments and the vision to drive a modern, secure … working and many, many more perks! Senior Cloud Infrastructure Engineer – Key Skills: A minimum of 10 years’ experience in an infrastructure engineering or senior systems administration role, ideally within professional services i.e. legal services Demonstrated experience with Broadcom VMware Cloud Foundation and vSphere, including the ability to manage, optimise ...

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 ...

Struts and enterprise application modernization to join our development team. You will be part of an ongoing migration program where key frameworks and legacy components are being upgraded to modern Java standards. Java Developer – Apache Struts 📍 Location: London, UK (3 days/week from client office – mandatory) 📄 Employment … Knowledge of Jakarta EE migrations Experience with EJB architecture Familiarity with IBM WebSphere deployments Strong debugging and problem-solving skills in legacy systems Nice to Have CVE remediation and enterprise security tooling experience Experience upgrading libraries (Jackson, Bouncy Castle, commons-fileupload) Exposure to Red Hat Linux, Hadoop ...

modern data platform from the ground up. Were working with a business in the middle of a high-impact data transformationmoving away from legacy constraints towards a scalable, cloud-first architecture. Theyre looking for a Principal Data Engineer to take a leading role in that journey. This isnt … skills in Python and SQL Hands-on experience with Databricks, Azure, and GCP/BigQuery Proven ability to work across both legacy systems and modern cloud environments Key Skills DevOps mindset you automate wherever possible and write clean, testable code Pragmatic approach focused on delivering value without ...

across the business. The role will oversee the delivery of a single SaaS ERP solution across Finance, HR, and Procurement, replacing legacy systems and enabling standardised, compliant processes across multiple European locations. Key Responsibilities Lead the ERP transformation programme end-to-end Define programme governance, roadmap ...

week projects covering discovery, proof of concept, and full implementation. This isn’t a role where you’ll be maintaining legacy systems — you’ll be designing and building solutions, shaping technical direction, and working closely with stakeholders to solve real business problems. What You’ll Be Doing ...

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 ...

with Microsoft and SMEs to architect enterprise-grade Azure solutions across IaaS, PaaS, and SaaS . Transformation: Lead the modernisation of legacy systems and enable cloud-native development. Partner with engineering teams to integrate AI into core business processes. Global Operations: Oversee 24/7 global cloud ...

transformation. This is a highly strategic role, central to one of the organisation’s most critical modernisation initiatives, focused on migrating legacy systems to a scalable, cloud-based architecture. Working closely with the Technology Leadership Team, you will take ownership of programme delivery end-to-end—ensuring … across a complex and high-impact transformation. In this role, you will combine strong programme leadership with a solid understanding of cloud and legacy modernisation, enabling the organisation to transition from mainframe environments to modern, cloud-native platforms. Key Responsibilities Lead the end-to-end delivery ...

influence over the product, technology and wider company direction. You won’t be joining a heavily layered corporate environment or maintaining legacy systems with little visibility over impact. The team is lean, collaborative and highly product-focused, with close working relationships across founders, product, engineering and operations. … There is genuine opportunity to: • Build products and systems from the ground up • Shape how the platform evolves as the business scales • Solve complex real-world operational problems • Influence product direction and decision-making • Operate with high ownership and autonomy • Work closely with founders and senior stakeholders • Have visible ...

containerised deployment (Docker/Kubernetes) Database architecture optimisation - latency, cost efficiency, SQL Server performance tuning Experience leading and mentoring technical teams Comfortable with legacy system migrations as well as greenfield builds Good to Have B2B or regulated fintech/trading platform background Familiarity with BizTalk, Logic Apps ...

Senior Technical Leader to drive the evolution of a trading platform within an investment bank. This role involves assessing current legacy systems and defining a clear technical roadmap for modernization. Candidates should have robust experience in investment banking and familiarity with Java and .NET systems. The position ...