Andrew Stiefel

I lead product marketing at Endor Labs, where we build tools for securing agentic development. Before that, I worked on developer security at 1Password, and cloud infrastructure and security at NGINX.

I’ve always been drawn to complex systems and how people come to understand them, whether in classical music, biology, or software. This site is where I work that out in miniature: short notes about problems I encountered and solved, with a dash of personal essays and observations.

Here are some links you can explore:

• Writing — my latest ideas
• Links — things worth reading from around the web
• Now — what I’m doing now
• Uses — the tools and gear I rely on

I love hearing if something I wrote resonated with you. Reach out to say hello.