Applied AI · Financial Services · AWS
Alfredo (Sauce)
Castillo
Building trustworthy, production-ready AI systems for the financial services industry.
Explore my workAbout
I work where distributed systems, applied AI, and financial services meet.
Alfredo (Sauce) Castillo is a Senior Solutions Architect and Applied AI specialist at AWS, where he works with Financial Services customers on all aspects of internet-scale distributed systems. His friends call him Sauce.
He specializes in machine learning, natural language processing, intelligent document processing, and generative AI. With a background in electrical engineering and computer science, Alfredo is passionate about family, technology, and endurance sports.
Selected writing
Ideas, patterns, and practical guidance.
Agentic AI in Financial Services: Choosing the Right Pattern for Multi-Agent Systems
Read article ↗ Featured · AWS Machine LearningBuild Verifiable Explainability with Automated Reasoning Checks
Read article ↗RAGAS Evaluation to Mitigate Failure Points in RAG Architectures
On the Performance of LLMs: Hallucinations and Mitigation Techniques
On the Performance of LLMs: Hallucinations and Mitigation Techniques
On the Performance of LLMs: Hallucinations and Mitigation Techniques
Streamline Insurance Underwriting with Generative AI
High Performance Actuarial Reserve Modeling Using AWS Batch
Talks & workshops
From architecture patterns to hands-on practice.
AWS Summits
AWS re:Invent
Some session materials require AWS internal access.
Projects & pathways
Reusable work for teams building agentic systems.
Strands Multi-Agent Collaboration
A financial services proof of concept demonstrating collaboration patterns with multiple AI agents.
AgentCore Pathway
Core member and contributor to AWS guidance for designing and delivering AgentCore solutions.
Agentic AI Based Claims Adjudication
Industry-focused guidance for applying agentic AI to insurance claims workflows.