• Presently Dr. Sinha is working as Vice Chancellor Ranchi University Ranchi since 21st June 2022.

• Pro-Vice Chancellor at Vinoba Bhave University, Hazaribag, Jharkhand since 29th May, 2020 to 20th June 2022.

• Director on Central Tasar Research and Training Institute, Ranchi, Jharkhand since 01-04- 2016 to 31- 08-2018

• Senior Scientist Central Tasar Research and Training Institute, Ranchi, Jharkhand since 01-09- 2010 to 31- 03- 2016

• Senior Scientist Central Tasar Research and Training Institute, posted at Odisha at Regional Tasar Research Station at Baribada (Odisha) since 01-08- 2006 to 31- 08- 2010.

• University Professor, Chief Scientist and HOD at Advance Centre on Sericulture, Dr. Kalam Agriculture College, Kishanganj (Bihar Agriculture University, Bhagalpur, Bihar) since 21-06- 2020 to 08- 04- 2021.

• Joined Central Tasar Research and Training Institute, Central Silk Board, Ministry of Textiles, Govt. of India in 1982as scientist and retired as a director in August 2018.