He is a 1972-batch Indian Administrative Service officer belonging to Gujarat cadre.
Between 2001 and 2004, Mishra has also served as the principal secretary of Modi, when he was the Chief Minister of Gujarat.
[2][3][4] On 11 September 2019, he was appointed as the Principal Secretary of the Prime Minister of India.
[12][13][14][15][16][1] On 11 June 2019, Mishra was re-appointed as Additional Principal Secretary to Prime Minister Narendra Modi.
On 11 September 2019 PK Mishra was appointed as the sole Principal Secretary to the Prime Minister of India.