Unsure if this is the right subreddit but I'll ask anyway. Ever since I was young I've always loved learning about History yet I've always loved learning about Computer Science so I was thinking, is there a job out there that combines the two subjects? I've been wondering about this due to my homeroom teacher giving us all the assignment to think of a potential career that we'd like to do in the future.
Do you mean the history of computers? Or the combination of technology, specifically computers, with the discipline of history? If the latter, the search term is "digital humanities," a small but growing field. Here is a little list of past DH initiatives in the discipline of History. Many University departments have focus areas on this topic, like University of Virginia and UC Berkeley. Searching "digital humanities history" will yield many leads.
Historians often do statistical analysis, which requires computer knowledge such as data science programming.
As a example, here is a well known paper on the rise of the powerful Medici family in 1400s Florence. The authors entered data about marriages in the city and did a computational analysis to understand how the Medicis came to dominate over the other clans. It's from 1993 though, current work can be more mathematically complicated.
There is a lot of scientific work on how historical factors affect the world today, like how immigration in the 1800s could explain current economies. This paper goes over those studies, argues that many of them are flawed and suggests ways to research more rigorously. It gets deep into the statistical aspects. So that could give you a good illustration of what the work is like.
On average economic history tends to have the most extensive data and the most detailed statistical analysis, so if you want to focus on computation then it could be the right specialty for you. Take a look at Pseudoerasmus' Twitter account - he's an economic historian and posts a lot about the current research and intellectual debates, it can give you a sense of what the field is doing and how they discuss things.
Have you considered video game development for historical games? Basically trying to work with Paradox or something like that. I feel like history and video games is something that will remain for a long time and the longer we go on, the more niche history will be covered in video games and, ergo, more niche historians will be needed. Hope this helps!