3 of 3 Contract Distributed Systems Jobs in the City of London

modern engineering practices Architect payment solutions supporting real-time payments, cross-border transactions, settlement, reconciliation, and regulatory requirements Design integration patterns across enterprise systems, third-party providers, and banking platforms Drive iterative delivery, stakeholder engagement, demonstrations, and technical progress reporting Collaborate with Business, Integration, Data, and DevOps Architects … Financial Services, or other highly regulated environments Deep expertise in Java, Spring Boot, and enterprise-scale backend development Strong knowledge of microservices architecture and distributed systems Experience designing event-driven solutions using Kafka or similar messaging technologies Strong understanding of API-first architecture, REST services, and enterprise integration ...

flows, anomaly detection, and abuse prevention Contribute to internal security standards, policies, and incident response readiness What You Bring: 10+ years experience building production systems in C# & .NET Deep knowledge of Auth0 (Actions, Rules, Hooks, Universal Login, MFA, RBAC, custom claims) Solid understanding of OAuth2 , OIDC , SAML … grasp of secure coding principles: input validation, secrets management, least privilege, secure session/token handling Ability to design and review threat models for distributed systems Comfortable working in high-autonomy, high-ownership environments Bonus: experience with Terraform, CI/CD security, or penetration testing Why Join ...

using APIs, EAI, ETL and web services. Experience in solution or enterprise architecture, including designing and delivering production AI, machine learning or large-scale distributed systems. Hands-on expertise with Large Language Models, retrieval-augmented generation, agentic and orchestration frameworks, and vector databases. A strong command of at least ...