he practised at hyderabad from 1961 to 1967. during his career, justice siddiqui served as civil judge, senior civil judge, additional district and sessions judge, district and sessions judge at sukkur and dadu, registrar of the shc twice, customs judge thrice, special judge anti-corruption, special judge banking court, chairman commercial court and drug court, member appellate insurance tribunal, presiding officer labour court, member supreme appellate court/tribunal, chairman institute of business administration (iba), karachi, and member board of governors of indus valley school of karachi.