Senior Full-Stack Engineer – AI Platform Architect

55 Exec Search is recruiting a Senior Full Stack Software Engineer for a London-based AI startup. You will help build the production systems behind a next-generation authentication product, working across frontend and backend in a hybrid London office.

You’ll design scalable backend services, APIs, and cloud-native systems on AWS, running Kubernetes workloads and delivering web applications. Collaborate with AI engineers and own architectural decisions from day one.