Senior Backend Architect — AI-Driven Web Platform

Callimacus in Milan is seeking a senior backend engineer to shape the platform as production scales. You will own the architecture, design core backend services, and guide API design for multi-modal AI workflows.

You will optimize performance, lead reliability improvements across AWS infrastructure (ECS, RDS, S3, ALB), and shape data models across Aurora/ClickHouse for scalable analytics. Join a small, founder-led team with high ownership and growth opportunities.