226 to 241 of 241 Legacy Systems Jobs in London

Full Stack Developer – Hybrid - London Do you love building both front-end and back-end systems? Are you comfortable switching between React components and Python? Have you worked in Cloud platforms (GCP, AWS, or Azure) ? Do you want to work on data-heavy, cloud-native microservices and modern web apps? If that sounds like you — keep reading About the … a successful Public Affairs company are looking for a Mid-Level Software Engineer to join their talented engineering team to work on a mix of greenfield development and legacy systems. You’ll get to make an impact from day one shaping architecture and writing clean code. What You’ll Do: You’ll rebuild a legacy user More ❯

Full Stack Developer – Hybrid - London Do you love building both front-end and back-end systems? Are you comfortable switching between React components and Python? Have you worked in Cloud platforms (GCP, AWS, or Azure) ? Do you want to work on data-heavy, cloud-native microservices and modern web apps? If that sounds like you — keep reading About the … a successful Public Affairs company are looking for a Mid-Level Software Engineer to join their talented engineering team to work on a mix of greenfield development and legacy systems. You’ll get to make an impact from day one shaping architecture and writing clean code. What You’ll Do: You’ll rebuild a legacy user More ❯

Full Stack Developer – Hybrid - London Do you love building both front-end and back-end systems? Are you comfortable switching between React components and Python? Have you worked in Cloud platforms (GCP, AWS, or Azure) ? Do you want to work on data-heavy, cloud-native microservices and modern web apps? If that sounds like you — keep reading About the … a successful Public Affairs company are looking for a Mid-Level Software Engineer to join their talented engineering team to work on a mix of greenfield development and legacy systems. You’ll get to make an impact from day one shaping architecture and writing clean code. What You’ll Do: You’ll rebuild a legacy user More ❯

Full Stack Developer – Hybrid - London Do you love building both front-end and back-end systems? Are you comfortable switching between React components and Python? Have you worked in Cloud platforms (GCP, AWS, or Azure) ? Do you want to work on data-heavy, cloud-native microservices and modern web apps? If that sounds like you — keep reading About the … a successful Public Affairs company are looking for a Mid-Level Software Engineer to join their talented engineering team to work on a mix of greenfield development and legacy systems. You’ll get to make an impact from day one shaping architecture and writing clean code. What You’ll Do: You’ll rebuild a legacy user More ❯

Full Stack Developer – Hybrid - London Do you love building both front-end and back-end systems? Are you comfortable switching between React components and Python? Have you worked in Cloud platforms (GCP, AWS, or Azure) ? Do you want to work on data-heavy, cloud-native microservices and modern web apps? If that sounds like you — keep reading About the … a successful Public Affairs company are looking for a Mid-Level Software Engineer to join their talented engineering team to work on a mix of greenfield development and legacy systems. You’ll get to make an impact from day one shaping architecture and writing clean code. What You’ll Do: You’ll rebuild a legacy user More ❯

Banking client are looking for a talented Senior Kotlin Developer to join a small highly skilled team tasked with developing a modern trading application to replace an existing Legacy system. You'll design, develop, and implement a scalable trading application to replace the Legacy system. You'll collaborate with team members to architect and deliver high More ❯

contract - Inside IR35 Application Support Analyst urgently required by a leading financial services firm in the City. Core part of the role is and resolving tickets tied to legacy applications - VB.NET, SQL, C#. Key Responsibilities First point of contact for legacy system issues—triaging, updating, and resolving support tickets Investigate issues within legacy applications More ❯

contract - Inside IR35 Application Support Analyst urgently required by a leading financial services firm in the City. Core part of the role is and resolving tickets tied to legacy applications - VB.NET, SQL, C#. Key Responsibilities First point of contact for legacy system issues—triaging, updating, and resolving support tickets Investigate issues within legacy applications More ❯

contract - Inside IR35 Application Support Analyst urgently required by a leading financial services firm in the City. Core part of the role is and resolving tickets tied to legacy applications - VB.NET, SQL, C#. Key Responsibilities First point of contact for legacy system issues—triaging, updating, and resolving support tickets Investigate issues within legacy applications More ❯

contract - Inside IR35 Application Support Analyst urgently required by a leading financial services firm in the City. Core part of the role is and resolving tickets tied to legacy applications - VB.NET, SQL, C#. Key Responsibilities First point of contact for legacy system issues—triaging, updating, and resolving support tickets Investigate issues within legacy applications More ❯

join their fast-paced team on an initial 3 month contract. This role is part of a strategic initiative to upgrade the existing Algo Collateral Management System. The legacy system, originally developed by IBM, is being replaced with the latest version provided by SmartStream, who acquired the platform in 2017. The upgrade focuses on updating the system?s … validation and backend testing. Financial Services Experience: Solid understanding of collateral management, settlements, or post-trade processing in a financial services environment. Experience working with SmartStream or Algo Collateral systems is highly desirable. Knowledge of financial instruments (e.g., derivatives, repos, securities lending) and associated collateral workflows. Desirable Skills: Experience in Agile or hybrid project delivery environments. ISTQB or equivalent More ❯

that is consolidating acquired data centres, innovating service models, and scaling rapidly. You’ll lead the harmonisation of different operating models into a unified, scalable platform—creating both strategic systems and people-first solutions. Your Impact: Operational Leadership: Redesign and optimise operations across multiple business units/data centres, ensuring scalability, consistency, and resilience as the company expands both …/end-to-end facility operations; can assess staffing models, workflow tools, SLA management, and vendor relationships. Track Record: Success at unifying disparate legacy operations into cohesive systems; experience with greenfield and brownfield assets is highly valued. Leadership: Natural team builder with strong people and change management skills—known for bringing diverse groups together and inspiring followership. More ❯

that is consolidating acquired data centres, innovating service models, and scaling rapidly. You’ll lead the harmonisation of different operating models into a unified, scalable platform—creating both strategic systems and people-first solutions. Your Impact: Operational Leadership: Redesign and optimise operations across multiple business units/data centres, ensuring scalability, consistency, and resilience as the company expands both …/end-to-end facility operations; can assess staffing models, workflow tools, SLA management, and vendor relationships. Track Record: Success at unifying disparate legacy operations into cohesive systems; experience with greenfield and brownfield assets is highly valued. Leadership: Natural team builder with strong people and change management skills—known for bringing diverse groups together and inspiring followership. More ❯

that is consolidating acquired data centres, innovating service models, and scaling rapidly. You’ll lead the harmonisation of different operating models into a unified, scalable platform—creating both strategic systems and people-first solutions. Your Impact: Operational Leadership: Redesign and optimise operations across multiple business units/data centres, ensuring scalability, consistency, and resilience as the company expands both …/end-to-end facility operations; can assess staffing models, workflow tools, SLA management, and vendor relationships. Track Record: Success at unifying disparate legacy operations into cohesive systems; experience with greenfield and brownfield assets is highly valued. Leadership: Natural team builder with strong people and change management skills—known for bringing diverse groups together and inspiring followership. More ❯

that is consolidating acquired data centres, innovating service models, and scaling rapidly. You’ll lead the harmonisation of different operating models into a unified, scalable platform—creating both strategic systems and people-first solutions. Your Impact: Operational Leadership: Redesign and optimise operations across multiple business units/data centres, ensuring scalability, consistency, and resilience as the company expands both …/end-to-end facility operations; can assess staffing models, workflow tools, SLA management, and vendor relationships. Track Record: Success at unifying disparate legacy operations into cohesive systems; experience with greenfield and brownfield assets is highly valued. Leadership: Natural team builder with strong people and change management skills—known for bringing diverse groups together and inspiring followership. More ❯

government environment. This role will focus on the pilot design and delivery of a critical new system, with the potential to extend into the redesign of a further 9 systems based on pilot success. This is a unique opportunity for a user-centred design expert who can confidently operate in secure, fast-paced environments, working at the intersection of … usability standards. Required Experience & Skills: Proven experience as a Senior UX Designer or UX-focused Business Analyst in government, defence, or secure environments. Experience designing for complex or legacy enterprise systems. Strong proficiency in UX tools such as Figma, Adobe XD, Sketch, or Axure. Demonstrable experience running user research sessions and usability testing. Deep understanding of user-centred More ❯