Nobody's first choice is to work at Acumen. It specializes in unimportant bureaucratic work that has minimal impact. Pay is bad. The data infrastructure is a joke.
Nobody who has the opportunity to leave stays much longer than a year. People who stay longer do so because they have no other choice.
The office is extremely quiet and anti-social. They made employees go back in person to the office in September for absolutely no reason.
While government healthcare analytics may seem like an opportunity to make a positive difference, it isn't. Most work Acumen does is of little importance and comically inefficient.
Acumen's business model is fine. They aren't going out of business any time soon, there will always be more CMS or FDA contracts to win. If this is your only option, there is nothing wrong with sticking it out for a year or two. But, if you do, know this: you will learn little in terms of marketable skills or knowledge, be under-payed, and be little more than a meaningless cog in the government machine.