Sofia Castellano

“ Sofia Castellano is a Cloud Solutions Architect based in Barcelona with 8 years of experience designing and migrating cloud infrastructure for mid-market companies across Spain and Latin America. She holds AWS Solutions Architect and Google Cloud Professional Cloud Architect certifications and has led cloud migrations for 14 organisations ranging from e-commerce platforms to healthcare SaaS companies. Sofia specialises in helping engineering teams answer the question most cloud providers don't want you to think about clearly: are you using the right platform for your actual workload? She has deep experience evaluating DigitalOcean, Hetzner, Vultr, and Linode alongside hyperscalers and has built cost comparison models that have saved clients an average of 38% on annual cloud spend. At Kuberns, Sofia writes about cloud architecture decisions, multi-cloud trade-offs, and when a managed PaaS with agentic automation outperforms the complexity of configuring raw cloud infrastructure. Her content helps engineering teams right-size their infrastructure without sacrificing reliability or scalability. ”