Senior Full-Stack Software Engineer, AI Core

Circle (circle.so) Senior Full-Stack Software Engineer, AI Core YesterdaySaved Easy Apply Remote 31 Locations Easy Apply 130K-140K Annually Senior level 130K-140K Annually Senior levelArtificial Intelligence • Consumer Web • Digital Media • Information Technology • Social Impact • SoftwareBuild end-to-end full-stack AI features on a Ruby on Rails backend and React frontend, including LLM inference infrastructure, RAG, AI agents, and evaluation/observability. Design and run experiments (A/B tests), optimize systems for production performance and reliability, and iterate rapidly with product and design partners.Top Skills: A/B TestingAi AgentsLlmsMySQLPostgresReactRetrieval-Augmented Generation (Rag)RubyRuby On Rails