What my first job should be?

Background on me: applied mathematics (in finance and Data Science) academic career, with excellent grades, an additional master but no internships

Offers:
big 4 as Analyst in the Artificial Intelligence and Digital section
Junior Data Scientist in a tech start-up

I don't have a clear idea of what I want in the long run so I would like to choose the path that leaves the most doors open. My sensation is that I would rather join the start-up, even if …

datascience job