51 to 73 of 73 Legacy Systems Jobs in London

data modelling. Skilled in building end-to-end business process applications, configuring workflows, implementing business rules, managing records, and integrating Appian with external systems via REST APIs, web services, and connected systems. API Development & Integration - Proficient in designing and building RESTful APIs using FastAPI, Flask, or Django REST Framework … models and automation services. Experience with API authentication (OAuth, JWT), rate limiting, error handling, API documentation (Swagger/OpenAPI), webhooks, and integrating disparate systems to create seamless automated workflows. Document Processing & OCR - Experience implementing intelligent document processing solutions using OCR technologies (Tesseract, Azure AI Document Intelligence, natural language processing ...

identity' approach. This role acts as the technical lead for Infrastructure and Identity, guiding a multi-year shift from legacy systems to a cloud-native, service-led model click apply for full job details ...

looking to appoint an experienced SQL DBA to take full ownership of their database estate across the business. The organisation operates a legacy mainframe system that is now out of support. While it is currently stable, there is a clear business risk, and they require a proactive ...

Technical Enterprise Architect you will be the architectural design authority across direct-to-customer financial wellbeing offerings including modernisation of the CRM, workflow systems and data platforms, building in scalability and operational excellence and integrating with partners, data/insight providers and agentic systems. You will collaborate across … week. About you: You have experience of designing target state architectures for large-scale platform modernisation and scaling You have experience of distributed systems design including migrating legacy enterprise systems to cloud native, microservices based architecture with dual-run and phased migration strategies You have experience ...

lead the design and integration of a mission-critical Emergency Services Network . This role focuses on the transition from 4G legacy systems to a cloud-native 5G Standalone (SA) architecture. The Essentials 4G Design: Deep knowledge of MME, GW-C, GW-U and interfaces … . 5G SA Design: Expertise in SBA architecture and N-interfaces (AMF, SMF, UPF). Cloud-Native: Experience with NFVI and Kubernetes (containerised systems management). Deliverables: Ownership of HLD/LLD , integration, and configuration management. Networking: Strong understanding of IP networks and core protocols. The Mission You will ...

looking for a Packet Core specialist to lead the design and integration. This role focuses on the transition from 4G legacy systems to a cloud-native 5G Standalone (SA) architecture. The Essentials looking for candidates with 3GPP 4G and 5G SA knowledge of Packet Core Network, understanding …/S8, SGi and others, for 5G SA N-interfaces/SBA architecture), knowledge of NFVI architecture/principles of containerised virtual systems management (Kubernetes) and understanding of IP networks. The role will require contributing to High and Low Level Packet Core Network designs ...

lead the design and integration of a mission-critical Emergency Services Network . This role focuses on the transition from 4G legacy systems to a cloud-native 5G Standalone (SA) architecture click apply for full job details ...

processes declarations for goods entering and leaving the UK through ports and airports. This platform is a core replacement for legacy customs systems, supporting the electronic completion of customs information as well as the calculation and payment of duties and taxes. The system currently processes approximately ...

processes declarations for goods entering and leaving the UK through ports and airports. This platform is a core replacement for legacy customs systems, supporting the electronic completion of customs information as well as the calculation and payment of duties and taxes. The system currently processes approximately ...

strong technical expertise with a deep understanding of our clients’ requirements to deliver high-quality software, whether that’s new applications, enhancements to existing systems, or bespoke API integrations. Our team works with a wide range of organisations from small businesses to large enterprises, and values pragmatic, maintainable development … looking for a Full Stack Frontend PHP developer to join our 8 Signals software development team, working on custom web platforms, internal systems, and API-driven applications. This is a primarily remote role with a strong full stack experience. Daily tasks include writing and maintaining clean, modular code, collaborating ...

strong technical expertise with a deep understanding of our clients’ requirements to deliver high-quality software, whether that’s new applications, enhancements to existing systems, or bespoke API integrations. Our team works with a wide range of organisations from small businesses to large enterprises, and values pragmatic, maintainable development … looking for a Full Stack Frontend PHP developer to join our 8 Signals software development team, working on custom web platforms, internal systems, and API-driven applications. This is a primarily remote role with a strong full stack experience. Daily tasks include writing and maintaining clean, modular code, collaborating ...

cost-effective technology solutions across the council. You'll be responsible for setting the architectural direction for our 5year technology investment strategy. Ensuring our systems, platforms and AI tooling align with business needs, emerging technologies and industry best practice. This is a high impact role with visibility across … engineering practices such as cloudnative, data driven and AIenabled architectures. - Excellent problem-solving skills, with the ability to troubleshoot legacy and modern systems alike. - Strong communication and negotiation skills, with proven experience influencing senior stakeholders. If you're motivated by innovation, transformation and designing solutions that make ...

Security Architect Requirement Rate; Flexible Location; Remote - adhoc travel to London Duration; 6 month initial You will be supporting a Legacy Application program in upgrading hundreds of business applications across Wintel, Linux and cloud environments. Core Competencies Legacy System Modernisation: Proven experience in upgrading legacy … CHECK-accredited experience conducting or supporting pre- and post-deployment security assessments, vulnerability management, and remediation planning. Technical Experience Wintel/Linux: Securing legacy applications via patching, hardening, and privilege management (e.g., Active Directory, SELinux). Cloud (AWS/Azure/GCP): Designing IAM policies, encryption (FIPS ...

platforms: Splunk, ELK/Opensearch, CloudWatch Logs Metrics & telemetry: Prometheus, Grafana, OpenTelemetry Event management: ServiceNow, PagerDuty, Moogsoft, BigPanda Strong knowledge of instrumentation for distributed systems, microservices, containers (EKS, ECS), serverless workloads, and legacy systems. Migration & Architecture Skills Proven experience supporting large-scale on-prem to AWS migrations ...

senior, customer-facing role.This position suits a Senior Infrastructure Architect from an IT MSP or Consultancy background, used to working across everything from legacy on-prem environments through hybrid estates to modern cloud-first platforms.What you’ll be doing As a Senior Infrastructure Architect, you will work directly … performance, and scalability Given the MSP client base, the successful Senior Infrastructure Architect must be confident modernising mixed estates while supporting business-critical legacy systems. What we’re looking for: Strong experience producing high-quality HLDs and LLDs Clear commercial awareness and comfort with design trade-offs Confident ...

looking to add several Senior Engineers to their team in Liverpool Street, London. The platform is designed to replace legacy core systems at Banks. The team are very experienced, with Tier-1 executive banking experience in-house. At the time of writing, they are under twenty employees … yet. This position is probably not for you. Backend Engineering experience using either Java, Golang or Rust. Experience working with Kafka/event-driven systems . Package & Benefits Up to 150,000 Base Salary + Bonus Medical & Dental Insurance Pension 4 Weeks ...

looking to appoint an experienced SQL DBA to take full ownership of their database estate across the business. The organisation operates a legacy mainframe system that is now out of support. While it is currently stable, there is a clear business risk, and they require a proactive … opportunities Standardising database versions across the environment Implementing upgrades, patches and structural improvements Ensuring resilience, stability and best practice database governance Supporting business-critical systems and mitigating risk within the legacy estate The SQL DBA can work fully remote for the duration of the contract. Apply ...

looking to appoint an experienced SQL DBA to take full ownership of their database estate across the business. The organisation operates a legacy mainframe system that is now out of support. While it is currently stable, there is a clear business risk, and they require a proactive … opportunities Standardising database versions across the environment Implementing upgrades, patches and structural improvements Ensuring resilience, stability and best practice database governance Supporting business-critical systems and mitigating risk within the legacy estate The SQL DBA can work fully remote for the duration of the contract. Apply ...

Middleware MVP to go live this year. You will play a pivotal part in shaping and aligning the data architecture across new and legacy platforms, with an initial focus on data flows, integrations, and understanding the current 'as-is' data estate. The programme includes a cross-functional team … document the current as-is data estate, including data domains, sources, flows, and integration points. Ensure strong alignment between Salesforce and legacy system data architecture, with a focus on seamless integration and data consistency. Collaborate closely with data modellers, solution architects, SMEs, platform managers, and data business analysts ...

servers (on VMware), and 1800 laptops. We also deliver remote access to network services via Citrix virtual desktops from legacy and new systems for up to 450 licensed users. MTVH currently operates its technology services across 3 main AD domains. There is a project in-flight … migrate required applications, data, systems and hardware assets to the (MTVH) AD domain. What you'll need to succeed An experienced enterprise Citrix SME and engineer, comfortable being the highest point of escalation for Citrix issues in a high uptime and change controlled environment. This is an operational role ...

large-scale mainframe modernisation programme within a complex enterprise environment. This is a contract role, ideal for specialists in secure API integration and legacy-to-digital transformation. The Role Youll design, build and support high-performance integration solutions using IBM DataPower Gateway, exposing core mainframe services as modern … Connect, MQ, CTG) Deep knowledge of API security, XSLT and GatewayScript Experience with API management platforms and DevOps automation Background in mainframe or legacy system modernisation projects Contract Details Contract role Hybrid working Competitive day rate Initial 6-month engagement Apply now if youre a DataPower specialist looking ...

Working) 3 Days in the Office A tier 1 investment bank is seeking a Project Manager to join a high-profile, multi-year data systems migration programme. This role sits within a complex, international environment and will play a key part in migrating legacy platforms … strategic systems across multiple countries. It's an opportunity to lead meaningful transformation work within a large-scale banking operation. Proven Project Management experience within a Tier 1 banking environment/consultancy Strong track record delivering legacy system migrations or large-scale transformation programmes Experience managing complex ...

Security Architect Requirement Rate; Flexible Location; Remote - adhoc travel to London Duration; 6 month initial You will be supporting a Legacy Application program in upgrading hundreds of business applications across Wintel, Linux and cloud environments. Core Competencies Legacy System Modernisation: Proven experience in upgrading legacy ...