Yes, there are more than a few companies who dub different language movies in Hindi. However, only a handful of them get contracts from Hollywood biggies, rest just survive by dubbing different Indian language movies in Hindi. Sound and Vision India is possibly one of the biggest names on the scene that does post-production work for foreign country movies.
These companies have their own dedicated infrastructure and artists who do the dubbing work. However, Hindi version voice of English dialogues depends on a range of needs, including the specific requirement of the movies. Plus, you will often see Bollywood celebrities lending their voice to characters in foreign movies. For example, in 2011 blockbuster Transformer, Akshay Kumar lent his voice for the Hindi version. Rajesh Khattar, a low-key but very in-demand voice artist, has given voice to the likes of Tony Stark in Iron Man and Jack Sparrow in the Pirates of the Caribbean. Mohan Kapoor is another renowned voice artist who has dubbed John McLain of Die Hard and Bane in Batman.