Kenneth Geisshirt is a software developer based in Copenhagen, Denmark. He is a chemist by education, and a geek by nature. Working for a small database vendor, he implements SDKs for various programming languages (including Java, JavaScript, and so on) for a variety of platforms (including Linux, Android, and macOS). He is a strong believer in open source software, and endeavors to contribute where and when he can. He has authored books on PAM, Git, Linux, and JavaScript, and he writes technical feature articles for computer magazines.

Harshad Kavathiya is a backend software developer with extensive industrial experience. He has worked for companies including Altair Engineering, Honeywell, CoWrks, and many more reputed multinational corporations. He is currently working for Accion Labs as a senior software engineer. Harshad holds an M.Tech in computer science from Manipal Institute of Technology, Manipal. His expertise lies in Python, data structures and algorithms, and MSA. He is passionate about real-time, scalable application development.