Cons/risks to moving to a smaller PE backed portfolio company?

Interviewing with a role as a Business Development/Corporate Development Associate at a PE backed portfolio company. The role would involve assessing targets to bring into the current portfolio involving due diligence, modeling, and operating overall development.

Currently I am A Senior Associate in Financial Due Diligence at an accounting firm. I only have 1 year of experience here, and the plan is to be promoted to Manager next year. But, given how the M&A market has been going, I wouldn't say that the promotion would be a given. I think on paper this would be a great opportunity since I would be involved in the entire deal process for targets, as well as getting industry and operations experiences. My concerns though are if it is risky going to a smaller portfolio company due to systems/operations being not established and everything is messy. Also taking a risks on whether or not the company will be successful and achieve large growth.

But, compensation would be a good jump right now, and since it is a small team and I would be wearing a lot of hats in the group, I think growth and progression potential is very high. I think especially if there is an option for equity, or receiving a % of transactions completed, it would be a good move.

Any commons cons/red flags to look out for in smaller portfolio companies? Also in general for exit ops, would this help or hurt my chances of being on an actual deal team or front office role in a PE group?