Principal Full-Stack Software EngineerLocation: LondonEmployment Type: PermanentProgramme: Robert Walters Workforce ConsultancyAbout the OpportunityRobert Walters is seeking an experienced Principal Full-Stack Software Engineer to join our Workforce Consultancy Programme, working on a long-term technology assignment with a leading organisation within the financial services sector.Through our Workforce Consultancy Programme, you will be employed permanently by Robert Walters and deployed to work with one of our established client organisations. This provides the opportunity to contribute to significant technology initiatives while benefiting from permanent employment and ongoing support from Robert Walters.This is a senior, hands-on engineering role for someone who can design, develop and operate production-grade software solutions across APIs, data products, enterprise integrations and AI-enabled tools.You will combine deep technical expertise with engineering leadership, helping shape technical direction, establish best practices and deliver secure, scalable and reliable solutions in a regulated environment.The RoleYou will work across software engineering, data, integration and AI agent tooling, developing reusable technology that improves business workflows and enables applications and automated tools to access trusted business capabilities.Key responsibilities will include:Designing, developing and maintaining production-grade software, with a strong focus on Python Back ..... full job details .....