[2] At Twenty20 level, he made his debut for the Lahore Lions in April 2005, at the age of 15 years and 140 days, making him the then youngest ever player to play in Twenty20 matches.
In the 2008 Asia Cup, Jamshed scored two consecutive half centuries, 53 runs against India before he was retired hurt and 52 not out against Bangladesh, at the National Stadium, Karachi.
He made his first one-day international century against India on 18 March 2012 in Bangladesh at Sher-e-Bangla National Stadium Mirpur at the 2012 Asia Cup.
He had a poor ICC World Cup 2015 in which he was dismissed in the single figures thrice and frequently struggled with the pull shot.
[6] In 2009 he along with veteran Abdul Razzaq set the highest 3rd wicket partnership ever in any forms of T20s (162)[7][8][9] In February 2017 he was provisionally suspended under the PCB's Anti-Corruption Code as part of an ongoing investigation of the 2017 Pakistan Super League spot-fixing scandal,[10] and was arrested by Britain's National Crime Agency shortly after.
[14] In February 2019, Jamshed, along with two other men, pleaded not guilty at Manchester Crown Court in England, after they were accused of bribery relating to the Pakistan Super League.