The Staff Selection Commission will be conducting the SSC GD exam for the post of Constable which will be working under the central government. This can be a great opportunity for those who are seeking a Central Government job. For the year 2017, the exam will be conducted for around 57,000 SSC GD vacancy. Through this exam aspirants can get a central government job in the following Armed Forces:

BSF (Border Security Force)
SSB (Sashastra Seema Bal)

CRPF (Central Reserve Police Force)

NIA (National Investigation Agency)

CISF (Central Industrial Security Force)

SSF (Special Security Force)

ITBP (Indo Tibetan Border Police)

Rifleman in Assam Rifles

To get complete details about the number of vacancies in different Armed Forces Organization of India, you can visit the link shared above. This will help you to prioritize your choice.
All the best..!!