Amarjit spent the first ten years of his district tenure in the IAS in the Kathiawar region of Gujarat, serving in Kutch, Junagadh, Bhavnagar, and Rajkot. This period was marked by significant learning, professional development, and deep engagement with Gujarati society. 

Thereafter, he spent five years in the Government of India at the Ministry of Health and Family Welfare, where he worked in the public health sector. He was actively involved in a major World Bank-assisted programme for the control of cataract blindness, which enabled a substantial expansion of cataract surgeries across the country through the skill upgradation of health professionals and public-private partnerships. He subsequently completed a PhD at the Liverpool School of Tropical Medicine in the United Kingdom on the Cost-effectiveness of the Blindness Control Programme in Karnataka. His research findings, published in The Lancet, along with other similar studies, contributed to the discontinuation of sub-optimal eye camps. 

After completing his PhD, he served for almost six years as Health Commissioner of Gujarat. This was among his most impactful assignments. During this period, the state health team made a significant contribution to reducing maternal mortality through Chiranjeevi, a public-private partnership that engaged private obstetricians. The initiative was honoured with the Prime Minister’s Award for Excellence in Public Administration in 2008. 

WHO has hosted this at: https://learn-uhc.srhc.org/story/15 as a global model for impact in reduction of MMR. 

Facilitated the setting up of the Indian Institute of Public Health in Gandhinagar. 

2010-17 in the Government of India in the Ministries of Health & FW, HRD and WR RD & GR. Involved with major initiatives for Population Stabilization; Teacher Education; completion of 106 major irrigation projects lying incomplete for a number of years, at a cost of Rs 77000 Crs; & initiated programme for cleaning of the Ganges. 

Retired in 2017 as the Secretary, to the GOI, Ministry of Water Resources River, Development and Ganga Rejuvenation. 

Post retirement, Chairman, Gujarat Real Estate Regulation & Development Authority, till November 2022.

Currently on the Board of: 

• Bhaikaka University at Anand (founded by Sh HM Patel) 
• Amrita Patel Centre for Public Health 
• Sardar Sarovar Narmada Nigam Ltd. 
• Deepak Charitable Trust 

Regular speaker at:

• National Centre for Good Governance; Involved in the training programmes of civil servants from Sri Lanka, Bangla Desh, Myanmar, Maldives & Indian States. 
• India Institute for Public Health, Gandhinagar (IIPHG) 
• Sardar Patel Institute of Public Administration, Government of Gujarat, Gandhinagar 
• IIT Gandhinagar 
• AIIMS, Jammu
• National Defence College, New Delhi

Articles published in prestigious journals like The Lancet, Bulletin of WHO, International Journal of Gynecs and Obstetrics, The Tribune and The Indian Express 

Book: Singh A, Saha D, & Tyagi A. (Eds.) (2019): WATER GOVERNANCE: CHALLENGES AND PROSPECTS 

Chapter in Department of Administrative Reforms and Public Grievances (DARPG) Book, Problems and prospects in the health sector in India* in Viksit Bharat @2047 Governance Transformed – Book brought out by DARPG & The International Institute of Administrative Sciences, Brussels, available at; click here