> Markdown version of [/@elizabeth-fuentes-leone](https://www.wearedevelopers.com/@elizabeth-fuentes-leone). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Elizabeth Fuentes Leone AI engineer and developer advocate helping teams build and secure production-ready agents. ## About Elizabeth Fuentes Leone builds agent harness architectures at AWS. As an AI engineer and developer advocate, she focuses on context engineering, memory, and security guardrails to help teams get generative AI into production. She breaks down complex systems into approachable code through hands-on demos. Her teaching covers the complete lifecycle of shipping agents, alongside practical approaches to choosing between vector, graph, and key-value memory so models retain context over time. ## Upcoming Sessions ### World Congress 2026 North America · September 23, 2026 San José, CA - [Agent Speedrun: Idea → Code → Deploy → Observe, Fix → Ship](https://www.wearedevelopers.com/events/world-congress-2026-north-america/sessions/1794-agent-speedrun-idea) - [Agent Speedrun: Idea → Code → Deploy → Observe, Fix → Ship #2](https://www.wearedevelopers.com/events/world-congress-2026-north-america/sessions/1795-agent-speedrun-idea) - [Vector, Graph, or Key Value? Choosing Your Agent's Memory](https://www.wearedevelopers.com/events/world-congress-2026-north-america/sessions/1823-vector-graph-or-key)