He joined the Bombay Civil Service in 1864, and was Political Officer in Native States of Kattywar in 1871, Secretary for the trial of the Gaekwar of Baroda in 1875, Secretary to Treaty with Portugal and Law Officer to Government of India in 1877; Judicial Commissioner of Burma in 1878, President of the Burma School Board in 1881, and Chief Secretary to Bombay Government, holding the Political, Secret, Educational, Persian, and Judicial portfolios in 1885.
Jardine was elected Fellow of the University of Bombay in 1872, and was sometime the University's Dean of Arts and Dean of Law. In 1895 he was appointed its Vice-Chancellor. He was also president of the Bombay Branch of the Royal Asiatic Society from 1895 until his retirement, having been elected to its membership in 1878.[2]
On his return to the United Kingdom, Jardine unsuccessfully contested Roxburghshire as a Liberal in 1900, before being elected to the seat in 1906, serving until 1918. He was made a Baronet of Godalming on 20 January 1916.[4]
He was a businessman on the world stage. For instance in 1901 he gave his address as 34 Lancaster Gate, Middlesex (the heart of London) and was funding railway building in North Borneo.[5] He was one of the many Jardine Baronets.
Jardine married Minnie Dunbar Hogg, the daughter of Jabez Hogg, [when?] and was succeeded in turn by his sons, Sir John Eric Birdwood Jardine, 2nd Baronet and Sir Colin Arthur Jardine, 3rd Baronet.