You go through an initial interview, and then you’re selected for a recruitment day, which involves 6 people interviewing you for 3.5 hours. You’re not reading that wrong! :)
The red flags start there. People don’t seem happy at all. Everything feels a little chaotic, and they ask you random questions that have nothing to do with the role.
It seems like a huge waste of time—for you: the candidate, AND for the people who work there. Imagine shifting the schedules of 6 people who should be focused on their work.
Afterward, they don’t discuss salaries or benefits, and they don’t even try to ‘sell’ you the role or the company. They don’t tell you much about the culture, structure, mindset, etc. They seem to have forgotten that the candidate is also evaluating the company.
It’s about making sure expectations are realistic between the candidate and the company (not just the company!) and aligned before moving forward.
I think you should carefully consider if it’s worth pursuing a position there. Reach out to colleagues on LinkedIn and investigate for yourself. From what I’ve seen, they don’t seem to work very smartly—paying too much attention to unimportant details and not being efficient in what really matters.