He was appointed to the post following a government order issued on Wednesday.
The term of his appointment will be till August 7, 2020, when he attains the age of 65 years or till further orders whichever is earlier, the Ministry said.
He was administered the oath of office and secrecy by Pradeep Kumar Joshi, the senior most member of the Commission.
A student of civil engineering from the Delhi College of Engineering and M. Tech in systems management from IIT-New Delhi, Saxena was selected for the civil services and joined the Indian Postal Service in 1978.
Saxena is a recipient of awards for Meritorious Services (2005) and Distinguished Services (2012) in recognition of his exemplary work and unblemished service record in the RAW.
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