Complex sentence: The OpenSSL project management team consists of four people, and the entire development group consists of 11 members, out of which 10 are volunteers; there is only one full-time employee, Stephen Henson, the lead developer.
Split into simpler sentences: The OpenSSL project management team consists of four people, and the entire development group consists of 11 members, out of which 10 are volunteers. There is only one full-time employee, Stephen Henson, the lead developer.