Summary
Duccio Giovannelli is a Head of Engineering with 13 years of experience building high-performance web and realtime systems, currently leading engineering at Commerce Layer. A pragmatic polyglot, he blends deep Ruby on Rails expertise with Elixir, Python, and modern cloud-native tooling like Kubernetes and ArgoCD to deliver scalable APIs and realtime data pipelines. He has run his own development consultancy, Extendi, for two decades, shipping consumer-facing Rails products and custom platforms while maintaining hands-on involvement in databases from MySQL and PostgreSQL to Cassandra and ElasticSearch. Duccio pairs strong systems and Unix knowledge with an interest in machine learning and realtime visualization (d3.js), enabling data-driven features at product scale. His background as a teacher and long-term small-business owner gives him a practical coaching style and a bias for clear, maintainable engineering. Based in Tuscany, he’s comfortable moving between architecture, implementation and operational concerns to ship reliable, production-grade software.
13 years of coding experience
13 years of employment as a software developer
Computer Science, Computer Science at Università degli Studi di Firenze