Hello,

To become an IES officer you need to apply for the  IES exam through the web portal of UPSC that conducts the exam and qualify the selection process  is done through written test and interview . The written test has two sections, Section I  (there will be objective model questions based on general English and general studies) and Section II (is a conventional paper is based on the concerned subject of engineering). Qualified candidates in the written test will go to the next level of selection, personality test. Based on the marks obtained in the written test and personality test, aspirants are selected to different departments.

Also to become an IES officer you are required to get an Engineering degree from any of the recognized University.

For UPSC ESE exam eligibilty criteria, please refer to the following link: https://competition.careers360.com/articles/upsc-ese-eligibility-criteria

Good Luck