Hernán Fernández

I’ve spent 20+ years in technology, and most of that time I’ve been the person sitting between complex systems and the people who depend on them. Today I’m a Senior Technical Account Manager at AWS, where I’m the trusted technical advisor for some of Chile’s largest enterprises — helping them adopt the cloud and, lately, Generative AI, without losing sleep over security or cost.

I like building as much as advising. When I see a problem show up again and again with customers, I tend to build something to fix it. That’s how I ended up authoring an open-source GenAI assistant for least-privilege IAM policies on the official AWS Samples organization, and a handful of other tools I keep maintaining.

My path hasn’t been a straight line: I started as a developer, spent years running Linux infrastructure for an astronomical observatory in the Atacama desert and for one of the world’s largest mining operations, supported Fortune 500 customers on big-data platforms, and eventually landed at AWS. The common thread is that I enjoy systems where reliability actually matters — and I enjoy explaining them to people in plain language.

I write here about cloud, security, IAM, and AI agents — mostly hard-won lessons, in production.