Onesinus Saut Parulian is a practitioner in the IT field, specifically in the field of software development since 2015. His educational background was in computer and network engineering at a vocational high school which was then continued with a major in informatics engineering. has a hobby of writing ebooks and sharing knowledge. He really likes the field of programming, making the author continue his postgraduate education in the field of computer science in 2023 while continuing his professional career as an Engineering Manager at a startup.