I'm trying to find a word which means that someone is curious about something. For example, technology inquisitor. Except that inquisitor means that someone is trying to find something in a harsh way and I just want it to mean that they are interested in this.
Enthusiast seems like an appropriate word choice.
Enthusiast (noun): a person who is very interested in and involved with a particular subject or activity.
He is an engineering enthusiast.
Some synonyms that may also work: