Dr Shirvastav takes charge from Dr RL Sharma, a senior professor, who was holding charge in absence of a regular director at the reputed institute.
Prior to joining his new assignment, Dr Shrivastav had remained director of NIT Jamshedpur for three years.
He said been appointed as Director NIT Hamirpur by Human Resource Development ministry for a five year term.
The post had fallen vacant in November, 2010 when the last director retired. Since then the institute had been suffering because of the prevailing uncertainty.