1 to 25 of 113 Legacy Systems Jobs in London

in cloud architecture and implementation Bachelor's degree in Computer Science, Engineering, related field, or equivalent experience Substantial hands-on technical experience with mainframe, non-x86 legacy systems and with technologies such as COBOL, JCL, CICS, DB2 for z/OS, Assembler, PL/I, Java, Rexx, flat/sequential files, GDGs, and VSAM Proven track record … in a technical lead role migrating workloads from mainframe and non-x86 legacy systems to distributed x86 infrastructures either on-premises or on to the Cloud Deep experience integrating mainframe and non-x86 legacy systems with distributed Linux-based or Windows-based x86 servers PREFERRED QUALIFICATIONS AWS associate or professional level certifications (e.g., Solutions … Architect Associate or Professional, DevOps Engineer Professional) preferred Experience leading customers with mainframe and legacy modernization initiatives Experience with tools and methodologies used to migrate mainframe workloads via hardware/middleware emulation, automated code conversion, and re-platforming Experience with analyzing on-premises mainframe applications and data stores to formulate plans for modernizing workloads that achieve customer's More ❯

in cloud architecture and implementation. - Bachelor's degree in computer science, Engineering, related field, or equivalent experience. - Substantial hands-on technical experience with mainframe, non-x86 legacy systems and with technologies such as COBOL, JCL, CICS, DB2 for z/OS, Assembler, PL/I, Java, Rexx, flat/sequential files, GDGs, and VSAM. - Proven track record … in a technical lead role migrating workloads from mainframe and non-x86 legacy systems to distributed x86 infrastructures either on-premises or on to the Cloud. - Deep experience integrating mainframe and non-x86 legacy systems with distributed Linux-based or Windows-based x86 servers. PREFERRED QUALIFICATIONS - Strong communication skills with the ability to explain … both technical and non-technical audiences - AWS associate or professional level certifications (e.g., Solutions Architect Associate or Professional, DevOps Engineer Professional) preferred - Experience leading customers with mainframe and legacy modernization initiatives. - Experience with tools and methodologies used to migrate mainframe workloads via hardware/middleware emulation, automated code conversion, and re-platforming. - Experience with analyzing on-premises mainframe More ❯

Integration Developer - Salesforce Education Cloud-Student Systems Implementation Integration Developer with experience of working on large enterprise-scale programmes, ideally in Higher Education, is needed to support a Salesforce Education Cloud, for our higher education client. The role will focus on the integration development using Microsoft Azure PaaS, and support the interim and long-term transition from legacy systems (such as SITS) to cloud-native platforms. Integration Developer- Salesforce Education Cloud-Student Systems Implementation Essential Experience Proven experience as an Integration Developer on enterprise-scale programmes, preferably in Higher Education. Excellent skills in designing and delivering integrations using Microsoft Azure PaaS (Functions, Logic Apps, API Management, Service Bus,) Expertise in integration strategy, API management … and canonical data models. Experience of integrating with Salesforce (REST/SOAP APIs, platform events) and Canvas LMS or similar SaaS platforms. Familiarity with integrating legacy systems (SITS) with modern cloud-native systems. Solid understanding of Agile delivery, sprint planning, backlog refinement, and DevOps principles. Experience with CI/CD pipelines, automated testing, and infrastructure-as-code More ❯

Integration Developer - Salesforce Education Cloud-Student Systems Implementation Integration Developer with experience of working on large enterprise-scale programmes, ideally in Higher Education, is needed to support a Salesforce Education Cloud, for our higher education client. The role will focus on the integration development using Microsoft Azure PaaS, and support the interim and long-term transition from legacy systems (such as SITS) to cloud-native platforms. Integration Developer- Salesforce Education Cloud-Student Systems Implementation Essential Experience Proven experience as an Integration Developer on enterprise-scale programmes, preferably in Higher Education. Excellent skills in designing and delivering integrations using Microsoft Azure PaaS (Functions, Logic Apps, API Management, Service Bus,) Expertise in integration strategy, API management … and canonical data models. Experience of integrating with Salesforce (REST/SOAP APIs, platform events) and Canvas LMS or similar SaaS platforms. Familiarity with integrating legacy systems (SITS) with modern cloud-native systems. Solid understanding of Agile delivery, sprint planning, backlog refinement, and DevOps principles. Experience with CI/CD pipelines, automated testing, and infrastructure-as-code More ❯

Senior AI Developer £80,000 + bonus + benefits International eCommerce organisation is looking for a Senior AI Developer to lead the modernization of core systems using AI to improve performance and efficiency. We need a highly skilled Lead Developer with proven experience migrating legacy systems and implementing AI-powered solutions. Experience with modern languages and … frameworks is a plus. About the Role: Play a pivotal role in transforming technology stack and driving the adoption of AI-powered tools to enhance development workflows. Modernising critical systems and implement intelligent solutions that support business growth. Key Responsibilities: Lead the migration of legacy systems to a modern tech stack (cloud platforms, APIs) Design and … teams to redesign and improve core business applications Mentor junior developers, fostering a culture of continuous learning and innovation Essential Skills: 5+ years’ software development experience, including significant legacy system modernization Relational database expertise (e.g., Microsoft SQL Server) Familiarity with REST APIs and cloud infrastructure Hands-on experience with AI-based developer tools (e.g., GitHub Copilot, ChatGPT, Tabnine More ❯

Role: Senior Database Architect Type: Contract Location: London, UK (Hybrid) Minimum years of experience: 10+ years Job Detail DB Architect having experience on data migration from legacy systems DB2 to modern cloud native databases like Amazon Aurora PostgreSQL. Hands-on experience in data migration from legacy systems DB2 to modern cloud native databases like More ❯

partner for a government agency's transformation programme. They are looking for a Lead Technical Architect to join the a high-profile initiative aimed at modernising legacy systems and improving data validation across the client's business gateway. This is a fully remote role, working within a blended agile team of consultancy and end client staff. You … To be considered, you'll need: Strong background in technical architecture within large-scale digital programmes Deep understanding of API Gateway design and enhancement Experience modernising legacy systems and migrating to cloud-native platforms Solid grasp of AWS (API Gateway, Lambda, S3, VPC) Familiarity with Java, DB2, relational databases, and network concepts Desirable experience includes: OpenAPI schemas More ❯

someone who has good programming skills Microsoft programming languages. The team uses cutting edge technology, but you will ideally be versed with a wide variety of legacy systems and migrating away from these to new cutting-edge technology solutions. These positions report to the Integration Lead and Architect and you will be working alongside a team of … . Responsibilities: Design and support all integration processes including migrations to and from new businesses as well as within internal applications and databases. Migrations away from legacy systems into new applications Review, support, feedback and size requirements produced by the Analysis team. Manage your delivery commitments within the relevant sprints to ensure timely and quality delivery of More ❯

someone who has good programming skills Microsoft programming languages. The team uses cutting edge technology, but you will ideally be versed with a wide variety of legacy systems and migrating away from these to new cutting-edge technology solutions. These positions report to the Integration Lead and Architect and you will be working alongside a team of … . Responsibilities: Design and support all integration processes including migrations to and from new businesses as well as within internal applications and databases. Migrations away from legacy systems into new applications Review, support, feedback and size requirements produced by the Analysis team. Manage your delivery commitments within the relevant sprints to ensure timely and quality delivery of More ❯

The Opportunity We're partnering with a leading bank on a major transformation programme: the build and migration of a proprietary lending platform that will replace legacy systems and sit at the heart of their future banking operations. This is a high-profile programme where you'll work closely with senior leadership, delivering change that impacts core … leadership, providing visibility, assurance, and strategic direction. What We're Looking For Proven experience as a Programme Manager in banking or financial services . Strong knowledge of core banking systems ; lending platform exposure is highly desirable. Excellent communication and stakeholder management skills - able to influence at executive level. Track record in governance, risk management, and regulatory programmes . Ability … to lead matrixed teams and work across multiple business areas. Comfortable in environments moving from legacy systems to proprietary platforms . RSG Plc is acting as an Employment Agency in relation to this vacancy. More ❯

tackle complex challenges using tools like Hadoop, Spark, and modern visualisation frameworks while implementing automation that drives government efficiency. You'll collaborate with stakeholders to transform legacy systems, implement data governance frameworks, and ensure solutions meet the highest security standards. Our deep expertise in public sector digital transformation and established presence across defence and government organisations offer … unique opportunities to shape the future of UK public services through innovative data-driven solutions. With our strong technical foundation and focus on mission-critical systems, you'll be part of a team delivering nationally significant projects that have a real impact on public service delivery. If you're passionate about applying cutting-edge data science and engineering in … engineer/scientist, you will: Design, implement, and maintain scalable data pipelines and ETL processes Develop and maintain data warehouses and data lakes Implement data quality monitoring and validation systems Create and maintain data documentation and cataloguing systems Optimize data storage and retrieval systems Implement data security and governance frameworks Build and maintain data APIs and services More ❯

With Intelligence is a leading provider of data and insights for the global asset management industry. We are scaling up our technological capabilities, harnessing the power of advanced data systems, AI, and modern cloud-based infrastructure to build a flexible, event-driven platform that supports our growing suite of digital products. We're assembling a top-tier London-based … transformation. This role offers the opportunity to be a key contributor to our technology evolution, leveraging your deep .NET experience to influence product direction, mentor teams, and ensure our systems are robust, scalable, and modern. Role Overview As a .Net Specialist you will be leading teams in the design, development, and implementation of software solutions using the .NET framework. … in C# Strong knowledge of .NET Framework 4.x and .NET Core 3. Experience with ASP.NET Web Forms, ASMX Web Services, and MVC Familiarity with VB.NET (for legacy systems) Infrastructure & DevOps: Experience with AWS for hosting and infrastructure Skilled in IIS configuration and deployment Strong knowledge of TeamCity for CI Experience with Octopus Deploy Familiarity with Git for More ❯

Veeva Systems is a mission-driven organization and pioneer in industry cloud, helping life sciences companies bring therapies to patients faster. As one of the fastest-growing SaaS companies in history, we surpassed $2B in revenue in our last fiscal year with extensive growth potential ahead. At the heart of Veeva are our values: Do the Right Thing, Customer … employees, society, and investors. As aWork Anywhere company, we support your flexibility to work from home or in the office, so you can thrive in your ideal environment. Veeva Systems is looking for a Migration Architect who will become a leading member of our EU Professional Services group, providing migration solutions on project teams implementing Veeva Vault R&D … long as you are in close proximity to an airport and are able to meet future travel requirements. Short visits to customer sites in Europe are very likely. Veeva Systems does not anticipate providing sponsorship for employment visa status for this employment position. What You'll Do Provide subject matter expertise on the Vault R&D migration implementation, including More ❯

seasoned AWS Data Engineer to join our team and contribute to the development of scalable, secure, and high-performance data solutions. This role involves modernizing mainframe legacy systems, building robust data pipelines, and enabling advanced analytics using AWS-native technologies. You’ll collaborate with cross-functional teams and play a key role in shaping our data strategy. … using AWS S3, with strong understanding of data lifecycle, access control, and performance optimization. Hands-on experience migrating data from Mainframes to AWS, including transformation and validation of legacy formats. Proficiency in reading and processing VSAM data using Copybooks and the Cobrix library. Experience implementing data retention and archival strategies in cloud environments. Strong understanding and practical implementation … documentation skills to clearly articulate data flows, architecture decisions, and technical findings. Experience with pair programming, conducting code reviews, and mentoring team members. Proven ability to reconcile data across systems and ensure data quality and integrity. Experience with data cataloging and metadata management using tools like AWS Glue Data Catalog. Demonstrated self-sufficiency in exploring new tools, troubleshooting issues More ❯

seasoned AWS Data Engineer to join our team and contribute to the development of scalable, secure, and high-performance data solutions. This role involves modernizing mainframe legacy systems, building robust data pipelines, and enabling advanced analytics using AWS-native technologies. You’ll collaborate with cross-functional teams and play a key role in shaping our data strategy. … using AWS S3, with strong understanding of data lifecycle, access control, and performance optimization. Hands-on experience migrating data from Mainframes to AWS, including transformation and validation of legacy formats. Proficiency in reading and processing VSAM data using Copybooks and the Cobrix library. Experience implementing data retention and archival strategies in cloud environments. Strong understanding and practical implementation … documentation skills to clearly articulate data flows, architecture decisions, and technical findings. Experience with pair programming, conducting code reviews, and mentoring team members. Proven ability to reconcile data across systems and ensure data quality and integrity. Experience with data cataloging and metadata management using tools like AWS Glue Data Catalog. Demonstrated self-sufficiency in exploring new tools, troubleshooting issues More ❯

seasoned AWS Data Engineer to join our team and contribute to the development of scalable, secure, and high-performance data solutions. This role involves modernizing mainframe legacy systems, building robust data pipelines, and enabling advanced analytics using AWS-native technologies. You’ll collaborate with cross-functional teams and play a key role in shaping our data strategy. … using AWS S3, with strong understanding of data lifecycle, access control, and performance optimization. Hands-on experience migrating data from Mainframes to AWS, including transformation and validation of legacy formats. Proficiency in reading and processing VSAM data using Copybooks and the Cobrix library. Experience implementing data retention and archival strategies in cloud environments. Strong understanding and practical implementation … documentation skills to clearly articulate data flows, architecture decisions, and technical findings. Experience with pair programming, conducting code reviews, and mentoring team members. Proven ability to reconcile data across systems and ensure data quality and integrity. Experience with data cataloging and metadata management using tools like AWS Glue Data Catalog. Demonstrated self-sufficiency in exploring new tools, troubleshooting issues More ❯

seasoned AWS Data Engineer to join our team and contribute to the development of scalable, secure, and high-performance data solutions. This role involves modernizing mainframe legacy systems, building robust data pipelines, and enabling advanced analytics using AWS-native technologies. You’ll collaborate with cross-functional teams and play a key role in shaping our data strategy. … using AWS S3, with strong understanding of data lifecycle, access control, and performance optimization. Hands-on experience migrating data from Mainframes to AWS, including transformation and validation of legacy formats. Proficiency in reading and processing VSAM data using Copybooks and the Cobrix library. Experience implementing data retention and archival strategies in cloud environments. Strong understanding and practical implementation … documentation skills to clearly articulate data flows, architecture decisions, and technical findings. Experience with pair programming, conducting code reviews, and mentoring team members. Proven ability to reconcile data across systems and ensure data quality and integrity. Experience with data cataloging and metadata management using tools like AWS Glue Data Catalog. Demonstrated self-sufficiency in exploring new tools, troubleshooting issues More ❯

the next 12 months, we're implementing an ERP system , including an FP&A Planning tool . You will be central to that transition-supporting data migration , maintaining legacy reporting , and helping define our future-state planning and reporting environment . This role focuses on data and modelling, working in close partnership with a peer covering commercial, compliance … teams to ensure consistency across data, models, and assumptions. Maintain and evolve "as is" reporting during the ERP transition. Contribute to data migration , ensuring accuracy between legacy systems and new ERP. Support the implementation of the new ERP system , including rebuilding models, testing, and reporting redesign. Help define best practices for modelling and reporting in the post … data into actionable insight. Experience working cross-functionally, with the confidence to engage stakeholders and build relationships outside of Finance, at all levels, locally and globally. Comfortable operating during systems change and contributing to ERP implementations. Strong organisational skills, with an ability to effectively manage multiple pieces of work concurrently, competing deadlines and priorities, whilst maintaining a high-level More ❯

Key responsibilities of the role include: Designing and supporting the configuration of SAP SuccessFactors Recruiting and Onboarding modules Leading on cleansing and validating applicant data from legacy systems, in addition to supporting data migration activities Engaging hiring managers and teams to develop user-focused workflows and dashboards Delivering UAT planning, test scripts, issue tracking and change documentation … analysis, and user readiness Contribute to ongoing change-related activities to ensure deliverables reflect operational realities and user needs About you You’ll bring a solid understanding of HR systems or ATS platforms, with a strong understanding of how recruitment operates in a large, complex organisation. Your ability to bridge technical detail and human experience will be key to … managing technical details while also translating outcomes into user benefits. To be considered, please include the below details in your application: Experience implementing or maintaining applicant tracking or onboarding systems Familiarity with recruitment compliance including equalities monitoring and GDPR Strong analytical and problem solving skills with attention to detail Excellent stakeholder engagement skills, particularly with hiring managers Ability to More ❯

an IT professional, work closely with our business units. Our Technology teams offer you an environment full of exciting challenges - whether it's supporting and developing legacy systems or introducing modern technologies such as AI, machine learning, and highly automated trading applications. Our IT department, with around 300 employees, works mostly in an agile manner using a … flexible mindset, with the necessary willingness to learn about our comprehensive product range In-depth experience with Oracle RAC Ideally, initial experience in database administration, especially with relational database systems Knowledge of SQL, PL/SQL, Ansible, and scripting (Shell) is an advantage Know-how in Linux is a plus Very good written and spoken German and English skills More ❯

the day-to-day operation of the CRM 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 Change & Release process for the 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 ❯

metrics and are scalable Helping to shape, evolve and document the architecture that underpins the existing platforms and services and lead their on-going transition from legacy systems to cloud based architectures. Interacting with project roles as required, to gain an understanding of the complex business environment, technical context, end client requirements and organisational strategic direction. Advising … its broader eco system Deployment automation technologies The ability to code, especially Infrastructure as code Network design, implementation, and administration A track record in the design and application of systems, leveraging automation technologies A deep understanding of Virtualisation and Container technologies Design of large, complex systems including practical experimentation and development skills Has both technical breadth and depth More ❯

a tight-knit development team to make key technical decisions, shape architecture, and drive feature development. Integrate seamlessly with third-party APIs, cloud platforms, and existing legacy systems where necessary. Own and evolve database design, models, and schemas to support new features and improve system efficiency. Craft performant SQL queries, stored procedures, and triggers to support mission … learning-focused, collaborative engineering culture. Qualifications & Requirements You thrive in a fast-moving, collaborative environment where ideas are welcomed, and experimentation is encouraged. 7+ years of experience building backend systems in a production environment. 3+ years of hands-on experience with modern software architecture and scalable frameworks. Proficiency in Java (Spring Boot), Python, or similar. Proficiency in JavaScript/…/CD pipelines, monitoring, containerization, etc.). Full stack development Knowledge of the dental or healthcare domain is a plus. Demonstrated experience in technical leadership or ownership of features, systems, or architecture. Experience with .NET Our Recruiting Process We try to make our process as simple as possible while still giving us opportunities to learn about each other. Virtual More ❯