> Markdown version of [/@jolo](https://www.wearedevelopers.com/@jolo). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Jolo Fullstack developer building serverless applications with JavaScript and Python. ## About Jolo builds modern, cloud-native applications as a fullstack developer. He started out writing PHP before shifting his focus to JavaScript, later picking up Python, SQL, and AWS as a data DevOps engineer. Today, his core focus is serverless architecture and JavaScript tooling. He cares about solving interoperability challenges in the ecosystem—his talk on module systems breaks down the friction between CommonJS and ESM, and explores what happens when bundlers don't output what you expect. ## Past Sessions ### World Congress 2024 · July 17, 2024 Berlin, Germany - [Oh CommonJS! Why are you mESMing with me?](https://www.wearedevelopers.com/videos/1059-oh-commonjs-why-are-you-mesming-with-me) · 30 min · 🎥 Watch recording ## Videos - [Oh CommonJS! Why are you mESMing with me?](https://www.wearedevelopers.com/videos/1059-oh-commonjs-why-are-you-mesming-with-me) · Jolo