Pros
I've experienced a high degree of autonomy and independence with EPAM. I only really interact with my EPAM manager at annual review or for monthly check-ins which typically don't have any important content. I am integrated fully with my client, on-site, and operate as a member of their team with little differentiation from client employees. The company does have really good self-development opportunities through credentialed courses and self-paced learning modules.
Kontras
Not a lot of obvious growth potential. You're a contracted engineer. There are standard cost-of-living and performance increases and there is an internal promotion track but realistically your growth is capped by client interest in you for higher roles. Constant policy-renewal courses are a pain in the butt, but are to be expected.