Careers & Professional Certifications

In this tutorial, I’ll show you how to evaluate a local AI agent with a simple, repeatable evaluation harness. The harness runs the agent against a set of test cases,…

Do you want to get into mobile development and build cross-platform applications? We just published a comprehensive new course on the freeCodeCamp.org YouTube channel that will teach you how to…

Every application, at some point, has to deal with a fundamental challenge: something happens, and several other things need to react to it. A user logs in, and the app…

In this tutorial, you’ll build a production-ready PayPal payment service using NestJS microservices. Along the way, you’ll learn how to isolate payment logic into its own service, communicate between services…

Are you ready to unlock the true rendering power of your computer and create breathtaking visuals? We just published a new course on the freeCodeCamp.org YouTube channel that will teach…

Have you been wanting to learn how to code but found it a bit too overwhelming or confusing? We just published a brand new course on the freeCodeCamp.org YouTube channel…

I was helping a team that had a 200-page API documentation PDF. Every new engineer spent their first two weeks Ctrl+F-ing through it, asking the same questions in Slack, getting…

Here’s something that tends to surprise developers who are new to security: most web vulnerabilities aren’t the result of sophisticated attacks. They come from code patterns that look completely reasonable:…

Every engineering team has said it at least once: “It works on my machine.” The phrase has become a running joke in software, but it’s rarely funny when it happens…

Most companies say they want to “adopt AI”. In practice this usually means a chatbot bolted onto a website. Meanwhile, engineers using AI coding tools hit the opposite wall. The…