Lucas Castro

Writing

Thoughts on programming, careers, and the tech industry.

About Knowledge, Intelligence, and Wisdom

Wisdom separates adepts from experts

career

Resources for Learning Auth

A curated collection of the best resources for understanding internet identity, security, and authentication

auth security resources

Managing a State of Distrust

A mental model for reasoning about authentication using sessions, tokens, and exchanges

auth security

"Networking" is terrible advice

Networking sucks, rarely works, and it isn't a serious job-hunting strategy

career

Working at Trinsic

A reflection of my time working at an early-stage startup

career startups

Tips for Coding Problems and Interviews

Resources, etiquette, and practical advice for technical interviews

career interviews

Using LLMs to Learn a New Programming Language

Practical dos and don'ts for integrating LLMs into your learning process

ai learning

Auth 101

A survey of auth concepts, practices, and strategies

auth security