26 to 50 of 129 Legacy Systems Jobs in London

Consultant on a contract basis Seeking a skilled Sage Intacct Consultant to assist with the implementation, configuration, and data migration of the Sage platform as part of an ongoing systems transformation project. This role will bridge the gap between IT operations and business users, ensuring a smooth transition to the new environment. Role The Sage Intacct Consultant will support … and rollout of Sage across the business, working closely with internal stakeholders and external vendors. Assist in data migration activities - cleansing, mapping, validation, and import from legacy systems into Sage. Provide technical and user support, troubleshooting issues during implementation and post-go-live. Work with IT and Finance teams to ensure system integrations, user permissions, and reporting More ❯

Engineer to join a major cloud transformation programme for a global logistics and maritime services organisation. This role sits within a high-performing engineering team responsible for migrating core systems and services to the cloud a key strategic initiative that drives scalability, resilience, and global efficiency. The Role You’ll play a pivotal role in architecting, automating, and supporting … long-term sustainability. Key Responsibilities Lead infrastructure design and deployment using Terraform (IaC) Build and manage Kubernetes clusters to support containerised workloads Support the migration of legacy systems to cloud platforms (AWS, Azure, or GCP) Develop and optimise CI/CD pipelines for cloud-native delivery Create automation scripts and tools — ideally using Python Implement monitoring, alerting More ❯

Engineer to join a major cloud transformation programme for a global logistics and maritime services organisation. This role sits within a high-performing engineering team responsible for migrating core systems and services to the cloud a key strategic initiative that drives scalability, resilience, and global efficiency. The Role You’ll play a pivotal role in architecting, automating, and supporting … long-term sustainability. Key Responsibilities Lead infrastructure design and deployment using Terraform (IaC) Build and manage Kubernetes clusters to support containerised workloads Support the migration of legacy systems to cloud platforms (AWS, Azure, or GCP) Develop and optimise CI/CD pipelines for cloud-native delivery Create automation scripts and tools — ideally using Python Implement monitoring, alerting More ❯

Engineer to join a major cloud transformation programme for a global logistics and maritime services organisation. This role sits within a high-performing engineering team responsible for migrating core systems and services to the cloud a key strategic initiative that drives scalability, resilience, and global efficiency. The Role You’ll play a pivotal role in architecting, automating, and supporting … long-term sustainability. Key Responsibilities Lead infrastructure design and deployment using Terraform (IaC) Build and manage Kubernetes clusters to support containerised workloads Support the migration of legacy systems to cloud platforms (AWS, Azure, or GCP) Develop and optimise CI/CD pipelines for cloud-native delivery Create automation scripts and tools — ideally using Python Implement monitoring, alerting More ❯

Engineer to join a major cloud transformation programme for a global logistics and maritime services organisation. This role sits within a high-performing engineering team responsible for migrating core systems and services to the cloud a key strategic initiative that drives scalability, resilience, and global efficiency. The Role You’ll play a pivotal role in architecting, automating, and supporting … long-term sustainability. Key Responsibilities Lead infrastructure design and deployment using Terraform (IaC) Build and manage Kubernetes clusters to support containerised workloads Support the migration of legacy systems to cloud platforms (AWS, Azure, or GCP) Develop and optimise CI/CD pipelines for cloud-native delivery Create automation scripts and tools — ideally using Python Implement monitoring, alerting More ❯

Lead a Mission-Critical Workforce Transformation Are you ready to spearhead one of the most significant workforce systems transformations in the UK? Our client, a leading Business Services organisation, is seeking an exceptional Lead Kronos Specialist to drive their multi-million-pound migration from legacy systems to cutting-edge SaaS platforms. This isn't just another … you'll be the technical architect of a nationwide transformation programme, directly impacting thousands of employees across the UK. As the bridge between legacy and future-state systems, you'll shape how an entire organisation manages its workforce. What You'll Own & Deliver: 🏗️ Technical Leadership Drive the complete migration from Kronos Workforce Central to UKG Pro Workforce … contract with strong extension possibilities ✅ Competitive Package: Exceptional remuneration reflecting the role's strategic importance Ready to lead the future of Workforce Management? If you're a seasoned workforce systems professional who thrives on complex challenges and wants to leave a lasting impact on a major UK organisation, this is your moment. Apply now to join a transformation that More ❯

based on experience) - Hybrid working (3 days in office). This person will lead engineering and DevOps across the banks Cross-Product Platforms, providing technical and strategic direction for systems supporting key Group Functions such as Risk, Finance, and Regulatory Reporting. The Head of Engineering will oversee a distributed team of 30+ engineers and developers across London, Dublin, and … India, driving high-quality software delivery, modernising legacy technology, and establishing consistent engineering and platform standards. The role requires a seasoned technology leader with experience in large, global banking environments, strong stakeholder management skills, and the ability to lead … transformation across complex, multi-domain environments. Key requirements: Proven background managing globally dispersed engineering teams (20-30+ heads) in global banks. Experience with Microsoft-based legacy systems (.NET, C#, SQL, Azure, on-prem/cloud) and emerging technologies including Linux, Java, microservices, and containerisation (Docker, Kubernetes, Helm, Camunda). Proficiency in CI/CD pipelines (Jenkins More ❯

based on experience) - Hybrid working (3 days in office). This person will lead engineering and DevOps across the banks Cross-Product Platforms, providing technical and strategic direction for systems supporting key Group Functions such as Risk, Finance, and Regulatory Reporting. The Head of Engineering will oversee a distributed team of 30+ engineers and developers across London, Dublin, and … India, driving high-quality software delivery, modernising legacy technology, and establishing consistent engineering and platform standards. The role requires a seasoned technology leader with experience in large, global banking environments, strong stakeholder management skills, and the ability to lead … transformation across complex, multi-domain environments. Key requirements: Proven background managing globally dispersed engineering teams (20-30+ heads) in global banks. Experience with Microsoft-based legacy systems (.NET, C#, SQL, Azure, on-prem/cloud) and emerging technologies including Linux, Java, microservices, and containerisation (Docker, Kubernetes, Helm, Camunda). Proficiency in CI/CD pipelines (Jenkins More ❯

based on experience) - Hybrid working (3 days in office). This person will lead engineering and DevOps across the banks Cross-Product Platforms, providing technical and strategic direction for systems supporting key Group Functions such as Risk, Finance, and Regulatory Reporting. The Head of Engineering will oversee a distributed team of 30+ engineers and developers across London, Dublin, and … India, driving high-quality software delivery, modernising legacy technology, and establishing consistent engineering and platform standards. The role requires a seasoned technology leader with experience in large, global banking environments, strong stakeholder management skills, and the ability to lead … transformation across complex, multi-domain environments. Key requirements: Proven background managing globally dispersed engineering teams (20-30+ heads) in global banks. Experience with Microsoft-based legacy systems (.NET, C#, SQL, Azure, on-prem/cloud) and emerging technologies including Linux, Java, microservices, and containerisation (Docker, Kubernetes, Helm, Camunda). Proficiency in CI/CD pipelines (Jenkins More ❯

based on experience) - Hybrid working (3 days in office). This person will lead engineering and DevOps across the banks Cross-Product Platforms, providing technical and strategic direction for systems supporting key Group Functions such as Risk, Finance, and Regulatory Reporting. The Head of Engineering will oversee a distributed team of 30+ engineers and developers across London, Dublin, and … India, driving high-quality software delivery, modernising legacy technology, and establishing consistent engineering and platform standards. The role requires a seasoned technology leader with experience in large, global banking environments, strong stakeholder management skills, and the ability to lead … transformation across complex, multi-domain environments. Key requirements: Proven background managing globally dispersed engineering teams (20-30+ heads) in global banks. Experience with Microsoft-based legacy systems (.NET, C#, SQL, Azure, on-prem/cloud) and emerging technologies including Linux, Java, microservices, and containerisation (Docker, Kubernetes, Helm, Camunda). Proficiency in CI/CD pipelines (Jenkins More ❯

embedded in some of the UK’s 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 across application, integration, and infrastructure domains Shape and steer technology change across major … You’ll Bring as a Solution Architect: You’re a credible solution architect who thrives in fast-paced, high-compliance environments. You understand the realities of Financial Services, legacy complexity, data sensitivity, and the need to balance innovation with control. Key Experience: Deep experience in Financial Services (e.g. banking, insurance, wealth, or capital markets) Proven success delivering architecture More ❯

embedded in some of the UK’s 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 across application, integration, and infrastructure domains Shape and steer technology change across major … You’ll Bring as a Solution Architect: You’re a credible solution architect who thrives in fast-paced, high-compliance environments. You understand the realities of Financial Services, legacy complexity, data sensitivity, and the need to balance innovation with control. Key Experience: Deep experience in Financial Services (e.g. banking, insurance, wealth, or capital markets) Proven success delivering architecture More ❯

the firm’s most strategically important investment areas. As part of this team, you’ll design and deliver production-grade Python applications that automate workflows, modernise legacy systems, and bridge the gap between current and next-generation infrastructure. You’ll work directly with stakeholders across investments, risk, finance, and operations, driving tangible business impact through technology. Responsibilities … Build and maintain Python-based tools supporting mortgage analytics, valuation, and reporting. • Develop production-grade applications and contribute to the migration of legacy models. • Identify automation opportunities across data pipelines, analytics, and reporting. • Collaborate with business teams to gather requirements and deliver scalable solutions. • Champion best practices in testing, documentation, and maintainability. Requirements • Strong proficiency in Python • Experience More ❯

the firm’s most strategically important investment areas. As part of this team, you’ll design and deliver production-grade Python applications that automate workflows, modernise legacy systems, and bridge the gap between current and next-generation infrastructure. You’ll work directly with stakeholders across investments, risk, finance, and operations, driving tangible business impact through technology. Responsibilities … Build and maintain Python-based tools supporting mortgage analytics, valuation, and reporting. • Develop production-grade applications and contribute to the migration of legacy models. • Identify automation opportunities across data pipelines, analytics, and reporting. • Collaborate with business teams to gather requirements and deliver scalable solutions. • Champion best practices in testing, documentation, and maintainability. Requirements • Strong proficiency in Python • Experience More ❯

the firm’s most strategically important investment areas. As part of this team, you’ll design and deliver production-grade Python applications that automate workflows, modernise legacy systems, and bridge the gap between current and next-generation infrastructure. You’ll work directly with stakeholders across investments, risk, finance, and operations, driving tangible business impact through technology. Responsibilities … Build and maintain Python-based tools supporting mortgage analytics, valuation, and reporting. • Develop production-grade applications and contribute to the migration of legacy models. • Identify automation opportunities across data pipelines, analytics, and reporting. • Collaborate with business teams to gather requirements and deliver scalable solutions. • Champion best practices in testing, documentation, and maintainability. Requirements • Strong proficiency in Python • Experience More ❯

the firm’s most strategically important investment areas. As part of this team, you’ll design and deliver production-grade Python applications that automate workflows, modernise legacy systems, and bridge the gap between current and next-generation infrastructure. You’ll work directly with stakeholders across investments, risk, finance, and operations, driving tangible business impact through technology. Responsibilities … Build and maintain Python-based tools supporting mortgage analytics, valuation, and reporting. • Develop production-grade applications and contribute to the migration of legacy models. • Identify automation opportunities across data pipelines, analytics, and reporting. • Collaborate with business teams to gather requirements and deliver scalable solutions. • Champion best practices in testing, documentation, and maintainability. Requirements • Strong proficiency in Python • Experience More ❯

environment. Produce API documentation that adheres to OpenAPI 3.x standards. Lead and mentor a small, focused development team, promoting collaboration, code quality, and technical excellence. Modernise legacy systems and drive the development of next-generation, cloud-native solutions aligned with architectural best practices. Champion DevOps, CI/CD, and automation to ensure fast, reliable, and secure releases. … to play a key role in defining the technical direction of a global platform, combining architecture, leadership, and deep engineering capability. If you thrive on building robust, cloud-native systems, leading high-performing teams, and solving complex challenges at scale, this role offers the opportunity to make a genuine impact within a world-class organisation. More ❯

remote - FTC (12 months) - up to 50k We're partnering with a university in London who is in the middle of a major digital transformation, replacing legacy systems with Tribal SITS and a modern Azure-based integration architecture. We're now hiring for a SITS Developer to join their integrations team and it is a good opportunity … leadership backing Gain experience on integrations (a highly sought after skill in the sector) Shape the technical direction of an Azure-first, event-driven architecture Work on high-impact systems that directly affect staff and student experiences Benefit from Tribal mentoring and structured development support Strong delivery culture – Release 1 completed on time; major milestones ahead through 2026 If More ❯

manipulating data from Salesforce and NetSuite Proficient in SQL and data warehouse development Solid experience with Power BI, including Power Query and DAX Experience working with legacy systems and data migration projects Strong analytical and problem-solving skills HOW TO APPLY: Please register your interest by sending your CV to Mojola Coker via the apply link on More ❯

S/4HANA migration projects. You will work closely with functional and technical teams to ensure the successful extraction, transformation, and loading (ETL) of data from legacy systems into SAP environments. This role will focus on delivering high-quality data migration solutions using SAP Migration Cockpit, SAP Data Services (BODS), and other SAP data management tools. Key More ❯

S/4HANA migration projects. You will work closely with functional and technical teams to ensure the successful extraction, transformation, and loading (ETL) of data from legacy systems into SAP environments. This role will focus on delivering high-quality data migration solutions using SAP Migration Cockpit, SAP Data Services (BODS), and other SAP data management tools. Key More ❯

multi-channel retailer, offering incredible products for every occasion. The Role My client are going through an enterprise-wide modernisation which will include the upgrading of legacy systems, re-platforming their ecommerce solution, the implementation of a new CRM & marketing solutions and other customer engagement technologies. Key Responsibilities Architecture Leadership : Define and lead solution architecture for transformational More ❯

multi-channel retailer, offering incredible products for every occasion. The Role My client are going through an enterprise-wide modernisation which will include the upgrading of legacy systems, re-platforming their ecommerce solution, the implementation of a new CRM & marketing solutions and other customer engagement technologies. Key Responsibilities Architecture Leadership : Define and lead solution architecture for transformational More ❯

multi-channel retailer, offering incredible products for every occasion. The Role My client are going through an enterprise-wide modernisation which will include the upgrading of legacy systems, re-platforming their ecommerce solution, the implementation of a new CRM & marketing solutions and other customer engagement technologies. Key Responsibilities Architecture Leadership : Define and lead solution architecture for transformational More ❯

multi-channel retailer, offering incredible products for every occasion. The Role My client are going through an enterprise-wide modernisation which will include the upgrading of legacy systems, re-platforming their ecommerce solution, the implementation of a new CRM & marketing solutions and other customer engagement technologies. Key Responsibilities Architecture Leadership : Define and lead solution architecture for transformational More ❯