Andrea Chiarelli is a software engineer and technical author with more than 20 years of experience in the software development industry. Throughout his career, he used several programming languages and technologies for the projects he was involved in. Lately, he is focusing on the JavaScript ecosystem both on the server and on the client-side. He has contributed to many online and offline magazines and authored a few books. Currently, he is working at Auth0 as an R&D Content Engineer.