Legacy Systems Jobs in London

26 to 50 of 212 Legacy Systems Jobs in London

Team Lead - Development

London, United Kingdom
Hybrid / WFH Options
Sonata One
and Mauritius. We operate as in line with our values: We challenge the norm, we change the way we think and work, by connecting systems and people, while committing to our vision and each other. We are now looking to recruit a skilledTeam Lead to join our global development … cornerstone of our backend development efforts. This is not just another development role; we're seeking someone with the acumen to build frameworks and systems from scratch, championing .NET core and fostering a culture of Test-Driven Development (TDD) within the team. Your technical expertise will be pivotal in … highest standards of development practice. Responsibilities: Drive technical standards and champion best practices within the backend team. Lead the design and architecture of backend systems, ensuring scalability, reliability, and optimal performance. Collaborate with other tech leads, product owners, and stakeholders to align the technical roadmap with business objectives and More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior Full Stack Software Engineer (.NET, Vue.js)

City, London, United Kingdom
Morris Sinclair Recruitment
a large-scale publishing platform. This platform integrates both modern and legacy technologies, and your role will be pivotal in maintaining existing systems while contributing to a long-term transition toward a more scalable and modern architecture. You ll work across the stack using technologies like .NET … love to hear from you. Key Responsibilities Design, develop, and maintain scalable web applications using .NET and Vue.js. Support and enhance legacy systems built with older .NET and Vue.js versions. Optimize database performance (SQL Server, MongoDB). Collaborate with cross-functional teams to gather requirements and implement … as Camunda. Proficient in automated testing using frameworks like NUnit or Playwright. Understanding of architectural patterns such as Domain-Driven Design (DDD), event-driven systems, and microservices. Knowledge of Behavior-Driven Development (BDD) and Test-Driven Development (TDD) methodologies. What s on Offer 4 Wellbeing days annually. Access to More ❯
Employment Type: Permanent
Salary: GBP 55,000 - 65,000 Annual
Posted:

Senior Full Stack Software Engineer (.NET, Vue.js)

London, Monument, United Kingdom
Morris Sinclair Recruitment
a large-scale publishing platform. This platform integrates both modern and legacy technologies, and your role will be pivotal in maintaining existing systems while contributing to a long-term transition toward a more scalable and modern architecture. You’ll work across the stack using technologies like .NET … love to hear from you. Key Responsibilities Design, develop, and maintain scalable web applications using .NET and Vue.js. Support and enhance legacy systems built with older .NET and Vue.js versions. Optimize database performance (SQL Server, MongoDB). Collaborate with cross-functional teams to gather requirements and implement … as Camunda. Proficient in automated testing using frameworks like NUnit or Playwright. Understanding of architectural patterns such as Domain-Driven Design (DDD), event-driven systems, and microservices. Knowledge of Behavior-Driven Development (BDD) and Test-Driven Development (TDD) methodologies. What’s on Offer 4 Wellbeing days annually. Access to More ❯
Employment Type: Permanent
Salary: £55000 - £65000/annum
Posted:

Databricks Engineer

London, United Kingdom
Treliant, LLC
data scientists, analysts, business stakeholders) to develop and optimize data pipelines, workflows, and data models. Guide and support the migration of legacy systems to Databricks, ensuring seamless transitions from legacy to cloud-based environments. Ensure data integrity, security, and compliance with financial industry regulations. Build More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior Cloud Data Architect

London Area, United Kingdom
Coforge
ETL and data modeling skills. Proven ability to design and implement effective database solutions, ensure compliance with regulations, and oversee data migration from legacy systems. Experience in resiliency, failover, monitoring, and defining deployment/alerting strategies. Ability to lead RfP responses, act as SPOC for technical discussions, and More ❯
Posted:

Senior Cloud Data Architect

london, south east england, United Kingdom
Coforge
ETL and data modeling skills. Proven ability to design and implement effective database solutions, ensure compliance with regulations, and oversee data migration from legacy systems. Experience in resiliency, failover, monitoring, and defining deployment/alerting strategies. Ability to lead RfP responses, act as SPOC for technical discussions, and More ❯
Posted:

C# Engineer

London Area, United Kingdom
Hybrid / WFH Options
twentyAI
of a broader modernisation programme transitioning into a cloud-native Python and Databricks environment . As the business moves away from legacy systems and invests in modern architecture, you’ll work at the intersection of stability and transformation — ensuring continuity in existing applications while helping shape the … technologies like React . Support mission-critical regulatory applications as part of a collaborative, Agile feature team. Contribute to the strategic migration from legacy platforms to a cloud-based architecture using Python , Azure , and Databricks . Apply best practices in DevOps, CI/CD, and test-driven development. … as Jira, Docker, Kubernetes, Octopus, Artifactory, Oracle, and SQL Server. A problem-solver with a strong understanding of software development practices. Experience with regulatory systems in Financial Services is a plus, but not essential. Why Join? Play a pivotal role in a cloud transformation journey using modern data and More ❯
Posted:

C# Engineer

london, south east england, United Kingdom
Hybrid / WFH Options
twentyAI
of a broader modernisation programme transitioning into a cloud-native Python and Databricks environment . As the business moves away from legacy systems and invests in modern architecture, you’ll work at the intersection of stability and transformation — ensuring continuity in existing applications while helping shape the … technologies like React . Support mission-critical regulatory applications as part of a collaborative, Agile feature team. Contribute to the strategic migration from legacy platforms to a cloud-based architecture using Python , Azure , and Databricks . Apply best practices in DevOps, CI/CD, and test-driven development. … as Jira, Docker, Kubernetes, Octopus, Artifactory, Oracle, and SQL Server. A problem-solver with a strong understanding of software development practices. Experience with regulatory systems in Financial Services is a plus, but not essential. Why Join? Play a pivotal role in a cloud transformation journey using modern data and More ❯
Posted:

Software Engineer - Endur

london, south east england, united kingdom
Shell
while helping customers decarbonize. With significant growth ambitions, Shell Energy is modernizing its Energy Trading Risk Management System (ETRM) platform, replacing legacy systems with new cloud-hosted Endur systems and supporting growing businesses in Asia, Australia, and LNG trading. As the Software Engineer who is skilled More ❯
Posted:

Transformation Solutions Architect - Financial Markets

London, United Kingdom
McGregor Recruitment
a new transformation and migration project and seeks a Solution Architect. The ideal candidate will have proven solutions architecture skills and experience alongside strong systems development experience at all stages of systems development, covering inception, budgeting, architecture, design, development, testing, live implementation, and post-implementation support. Technical skills … independent and database-independent applications 5+ years of solution architecture experience Experience working in Financial Markets Infrastructure and/or Regulated environments Analytical and systems architecture/design skills Database design skills in technologies such as Oracle, SQL Server, etc. EDA technology - Kafka Commodity platform - OpenShift, containerisation skills Object … stakeholder management abilities Knowledge of Java application programming Further elements of the role: Defining options and providing recommendations for migration from legacy systems to new event-driven and service-focused architecture, in collaboration with the Global Enterprise Architecture team Delivering a coherent end-to-end IT solution More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Data Architect

London Area, United Kingdom
Hybrid / WFH Options
twentyAI
Architect to help shape the future of its data landscape. This high-priority initiative will see the organisation move from complex legacy systems to a modern, cloud-based environment , leveraging the power of Azure, Python, and Databricks . You will be central to designing the data architecture … and implement robust, scalable data architecture on the Microsoft Azure cloud platform. Lead the adoption of Databricks and cloud-native tools to modernise legacy systems. Define data standards, domains, and governance frameworks to support business-critical functions like trading, risk, operations, and regulatory … reporting. Build both real-time and batch data pipelines to support fast, data-driven decision-making. Model enterprise data structures and ensure alignment across systems and teams. Document metadata, lineage, and ownership to support compliance and transparency. Collaborate closely with Data Engineers , Software Developers , and Business Stakeholders to align More ❯
Posted:

Data Architect

london, south east england, United Kingdom
Hybrid / WFH Options
twentyAI
Architect to help shape the future of its data landscape. This high-priority initiative will see the organisation move from complex legacy systems to a modern, cloud-based environment , leveraging the power of Azure, Python, and Databricks . You will be central to designing the data architecture … and implement robust, scalable data architecture on the Microsoft Azure cloud platform. Lead the adoption of Databricks and cloud-native tools to modernise legacy systems. Define data standards, domains, and governance frameworks to support business-critical functions like trading, risk, operations, and regulatory … reporting. Build both real-time and batch data pipelines to support fast, data-driven decision-making. Model enterprise data structures and ensure alignment across systems and teams. Document metadata, lineage, and ownership to support compliance and transparency. Collaborate closely with Data Engineers , Software Developers , and Business Stakeholders to align More ❯
Posted:

Cloud Architect

London Area, United Kingdom
Hybrid / WFH Options
Merlin Entertainments
growth, experience-driven business. You'll lead the development of scalable, secure, and future-proof cloud strategies, guiding the transformation of legacy systems and setting the vision for cloud-first, edge-aware architecture. This is a unique opportunity to architect solutions that impact millions of guests worldwide … some of the most iconic entertainment brands. Key Responsibilities Develop and implement scalable and secure cloud infrastructure strategies. Lead the migration of on-premises systems to cloud platforms (AWS, Azure, GCP). Define infrastructure roadmaps and integrate edge computing for global attractions. Ensure governance, compliance, and security across all … desirable. Proven track record of successful cloud migrations and adoption of cloud-first strategies. Strong knowledge of IaC (Terraform, Ansible, CloudFormation). Familiarity with systems like Oracle Simphony and Opera, and open API architectures. Understanding of cloud governance, security frameworks, and compliance (GDPR, ISO 27001, SOC 2). Proficiency More ❯
Posted:

Cloud Architect

london, south east england, United Kingdom
Hybrid / WFH Options
Merlin Entertainments
growth, experience-driven business. You'll lead the development of scalable, secure, and future-proof cloud strategies, guiding the transformation of legacy systems and setting the vision for cloud-first, edge-aware architecture. This is a unique opportunity to architect solutions that impact millions of guests worldwide … some of the most iconic entertainment brands. Key Responsibilities Develop and implement scalable and secure cloud infrastructure strategies. Lead the migration of on-premises systems to cloud platforms (AWS, Azure, GCP). Define infrastructure roadmaps and integrate edge computing for global attractions. Ensure governance, compliance, and security across all … desirable. Proven track record of successful cloud migrations and adoption of cloud-first strategies. Strong knowledge of IaC (Terraform, Ansible, CloudFormation). Familiarity with systems like Oracle Simphony and Opera, and open API architectures. Understanding of cloud governance, security frameworks, and compliance (GDPR, ISO 27001, SOC 2). Proficiency More ❯
Posted:

Technology Advisory Assistant Manager

London, United Kingdom
BDO UK LLP
within our Business Services and Outsourcing Stream consists of cloud accounting specialists that support businesses with the implementation and migration from legacy systems to innovative cloud accounting. We are supported by integration partners offering systems designed to enhance productivity, operational performance, the control environment, business agility … production of timely management information. You will also be working with clients to transform their finance function through the application of technology, identifying suitable systems to help them achieve their aims. You will take responsibility for client onboarding, migration and configuration of the selected cloud accounting systems, work … closely and manage members of the team to ensure our clients' requirements are met. If you are interested in accounting systems and how they can be utilised to transform finance functions into a lean, efficient and automated engine for any business, come and join us! You'll be someone More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

CRM Platform Manager, DealCloud, Salesforce

City of London, Greater London, United Kingdom
Arc IT Recruitment
of the DealCloud platform, ensuring seamless functionality and troubleshooting issues. Support system integrations and monitor application performance. Manage data migration from Legacy systems, ensuring accuracy and integrity. Collaborate with Investment Bankers, Operations, Business Support, and IT teams to tailor DealCloud to business needs. Drive a modern IT … and stakeholder management skills. Knowledge of Investment Banking best practices and regulatory requirements. Proficiency in Microsoft Office Suite and relevant software applications. Preferred: Information Systems Degree (2:1 or higher) If you're passionate about CRM technology and want to make an impact in a leading Investment Banking firm More ❯
Employment Type: Permanent
Posted:

CRM Platform Manager

London Area, United Kingdom
ARC IT Recruitment
of the DealCloud platform, ensuring seamless functionality and troubleshooting issues. Support system integrations and monitor application performance. Manage data migration from legacy systems, ensuring accuracy and integrity. Collaborate with Investment Bankers, Operations, Business Support, and IT teams to tailor DealCloud to business needs. Drive a modern IT … and stakeholder management skills. Knowledge of Investment Banking best practices and regulatory requirements. Proficiency in Microsoft Office Suite and relevant software applications. Preferred: Information Systems Degree (2:1 or higher) If you’re passionate about CRM technology and want to make an impact in a leading Investment Banking firm More ❯
Posted:

CRM Platform Manager

london, south east england, United Kingdom
ARC IT Recruitment
of the DealCloud platform, ensuring seamless functionality and troubleshooting issues. Support system integrations and monitor application performance. Manage data migration from legacy systems, ensuring accuracy and integrity. Collaborate with Investment Bankers, Operations, Business Support, and IT teams to tailor DealCloud to business needs. Drive a modern IT … and stakeholder management skills. Knowledge of Investment Banking best practices and regulatory requirements. Proficiency in Microsoft Office Suite and relevant software applications. Preferred: Information Systems Degree (2:1 or higher) If you’re passionate about CRM technology and want to make an impact in a leading Investment Banking firm More ❯
Posted:

Mainframe Architect

London Area, United Kingdom
Anson McCade
and innovative Mainframe Architect. This organization specializes in designing, managing, and modernizing enterprise-grade technology environments across industries, helping clients transform legacy systems and accelerate cloud adoption. Position Overview The Mainframe Architect plays a pivotal role in delivering end-to-end technical solutions for complex enterprise environments. … best practices, supporting continuous improvement and innovation. Required Skills and Qualifications 12+ years of experience in enterprise IT, with deep expertise in mainframe database systems such as IBM DB2™, IMS, Adabas, Cincom Supra, or Datacom. Strong understanding of z/OS environments and technologies including JCL, JES, RACF/ More ❯
Posted:

Mainframe Architect

london, south east england, United Kingdom
Anson McCade
and innovative Mainframe Architect. This organization specializes in designing, managing, and modernizing enterprise-grade technology environments across industries, helping clients transform legacy systems and accelerate cloud adoption. Position Overview The Mainframe Architect plays a pivotal role in delivering end-to-end technical solutions for complex enterprise environments. … best practices, supporting continuous improvement and innovation. Required Skills and Qualifications 12+ years of experience in enterprise IT, with deep expertise in mainframe database systems such as IBM DB2™, IMS, Adabas, Cincom Supra, or Datacom. Strong understanding of z/OS environments and technologies including JCL, JES, RACF/ More ❯
Posted:

Data Migration Lead

London, United Kingdom
Hybrid / WFH Options
Systems Accountants
for delivery. Scope: Design Data Migration Strategy: Develop and implement a robust data migration strategy to ensure a seamless transition from legacy systems to the new ERP platform. Assess Data Quality: Conduct thorough assessments of legacy data to identify and address quality issues, ensuring data More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Solutions Architect - Azure; DevOps - Power Platform - Shopify

London, United Kingdom
Hybrid / WFH Options
Experis - ManpowerGroup
Salary Range is £65,000pa to £68,000pa + Benefits As the Solutions Architect, you will be responsible for designing the technical architecture all systems and infrastructure and ensuring alignment to the client's technology roadmap and principles. Responsible for Developing and Maintaining the Solution Architecture aligned to the … Lead on stakeholder engagement and hold a robust understanding of all the operations and activities that the charity carries out. Your key technical and systems knowledge will include: Microsoft Azure - DevOps Power Platform Shopify eCommerce SaaS - Digital Cloud Security Role Responsibilities: Experience of delivering Solutions level Architecture to ensure … the best use of data, ideally in the context of handling legacy systems Significant experience working within mobile, SaaS, PaaS and IaaS solutions environment Experience of DevOps, agile project and product management Experience of supporting procurement of DDAT Architecture and working with 3rd party technical and application More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Project Manager -Professional Services

London, United Kingdom
Fortinet, Inc
time, within scope and within budget. • Uses appropriate verification techniques to manage changes in project scope, schedule and costs. Measures project performance using appropriate systems, tools and techniques. • Reports and escalates to management as needed. • Manages escalations with all levels internally and externally to achieve success. Handling escalations can … of pre-defined Professional Services scope for FortiSASE and FortiSoar. • Leads engagement with customized scopes, such as migration strategies for clients transitioning from legacy SaaS solutions to modern SASE architectures. Job Requirements • 5+ years of experience as a project/program manager, deploying and managing security solutions across … such as consultant, professional services implementation engineer, technical lead or architect. • Experience with SaaS solutions, including planning, deploying, and migrating from legacy systems (on-premises or cloud) to cloud-based security platforms. • Solid technical background in security, cloud infrastructure, and internetworking, with experience in deploying cloud-based More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Data Solutions Architect - London Markets - 10959HS

London, United Kingdom
Proactive.IT Appointments Limited
the Snowflake platform. System Analysis: Evaluate system requirements to ensure compatibility and performance. Legacy Migration: Lead data migrations from legacy systems to modern Snowflake environments. Security & Compliance: Implement robust data security protocols aligned with regulatory and organizational standards. Stakeholder Collaboration: Work cross-functionally to translate … data needs into actionable architecture and solutions. Performance Tuning: Continuously optimize data pipelines and database systems for speed and efficiency. Documentation: Produce and maintain architecture documentation, technical specs, and design artefacts. What We're Looking For Industry Expertise: Must have hands-on experience in the Lloyd's of London More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior Data Engineer

London Area, United Kingdom
Hybrid / WFH Options
DATAHEAD
a global financial services firm undergoing large-scale digital and cloud transformation. This role sits at the intersection of cloud-native architecture and legacy system integration , and is critical to building scalable, secure data solutions using the Azure ecosystem. You’ll work across modern and hybrid environments, lead … end-to-end data pipelines on Azure Synapse and Databricks. Work with DevOps and Architecture teams to ensure seamless integration between cloud and legacy on-prem systems. Contribute to a cloud-native data engineering framework built around a “single version of the truth.” Create and govern analytical data … and fast-paced change. Why This Role? Own critical engineering work across a modern Azure stack Influence the integration strategy between legacy systems and cloud platforms Be part of a business making bold investments in data and technology Please Apply More ❯
Posted:
Legacy Systems
London
10th Percentile
£40,549
25th Percentile
£50,063
Median
£71,250
75th Percentile
£95,938
90th Percentile
£105,250