Sebastian KaczmarekSebastian Kaczmarek is an experienced programmer who specializes in web solutions. He holds an engineer's degree in information technology and is a certified Linux administrator. In the projects he has been a part of, he has worked with many technoloies such as JavaScript, Node.js, MongoDB, PHP, MySQL, Java, Hadoop, HBase, and Angular. Sebastian is passionate about JavaScript and Node.js and loves to share his knowledge on Stack Overflow, where he has reached over 177,000 people with his helpful posts. Currently, he's working as a backend lead at a Polish software company where he is responsible for architecture design and the development of reliable solutions. In his free time, he likes reading books about astronomy and artificial intelligence. Read More Read Less