Amarjit Singh Jessy was born on 26 July 1964 in Ipoh, Malaysia and educated at Anglo-Chinese School in Ipoh.
He took up umpiring at an early age and progressed to become a National and then international umpire.
He earned his first international umpires cap on 25 May 1992 when he was appointed to umpire the Australia v Argentina match in Darwin, Australia. He was awarded his FIH international badge in April 1993; Grade 1 badge in February 1996 and World panel badge in August 1998.
He umpired 154 international matches and was awarded by the International Hockey Federation (FIH) the Golden Whistle after he officiated 100 international matches.
He umpired at three Olympic Games - Sydney 2000; Athens 2004; Beijing 2008
He umpired at four World Cups - Utrecht 1998; Kuala Lumpur 2002; Monchengladbach 2006; New Delhi 2010
He umpired at the Rotterdam 2005 Junior World Cup; Kuala Lumpur 1998; Manchester 2002 Commonwealth Games and Champions Trophy in Amsterdam 2006; Kuala Lumpur 2009.
After he hung up his whistle, he was made umpires manager by FIH for numerous tournaments.
He had been the Perak HA secretary since 2000 and was also the organising chairman of the Azlan Shah Cup.
Amarjit died of a heart attack at his house in Ipoh, Malaysia on Wednesday 22 February 2023 aged 59.