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Indian Engineering Services (IES)

Updated: Sep 30, 2023

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IES Eligibility Criteria

To be eligible for IES, the candidate must adhere to certain rules. Mention below are the said rules:


The candidate must be a citizen of India or of Nepal or a subject of Bhutan.


The candidate must possess at least a bachelor's degree in Engineering (B.E. / B. Tech) from a recognized university or equivalent. M.Sc. degree or its equivalent with Wireless Communications, Electronics, Radio Physics or Radio Engineering as special subjects are also acceptable for certain services/posts only


The candidate must be of age between 21–30 years on the 1 August of the year of Engineering Services Examination (ESE). However, there are some relaxations in the age limits for candidates belonging to categories other than general for IES.

IES Exam Schedule

The IES test is conducted in June every year at different centers across India in many cities. The dates for IES exam are announced online at the beginning of the year.

IES Exam Pattern

The IES exam is conducted in 3 stages- Preliminary, Mains and Interview.
Stage I consists of 2 objective type papers.
Paper I (General Studies & Engineering Aptitude) is common for all candidates and is of 2 hours duration (200 marks).
Paper II (Engineering Discipline) is of 3 hours (300 marks).
Stage II consists of 2 conventional type papers.
Both the paper I and paper II are two different engineering specific discipline papers of 3 hours duration each (300 marks each).
Stage III is the Personality Test
The candidates who are able to clear both the preliminary and the main exam are called for the interview (200 marks).

IES Exam Syllabus

General Studies and Engineering Aptitude Paper
The IES paper I of Stage-I includes questions from the following Topics:

  • Current issues of national and international importance relating to the social, economic and industrial development
  • Engineering Aptitude covering Logical reasoning and Analytical ability
  • General Principles of Design, Drawing, Importance of Safety
  • Standards and Quality practices in production, construction, maintenance, and services
  • Basics of Energy and Basics of Project Management
  • Basics of Material Science and Engineering
  • Information and Communication Technologies (ICT) based tools and their applications in Engineering
  • Ethics and values in the Engineering profession.

The syllabus for engineering specific disciplines can be downloaded from the link-

IES Future Prospects

IES remains the most sought-after careers for the engineering graduates in India. It is therefore considered as the toughest exam in India and amongst the toughest in the world due to less number of posts and its technical nature. Mostly the toppers of this exam are graduates of institutes like the Indian Institutes of Technology (IITs) and Indian Institute of Science (IIS). Because of the difficult selection procedure, IES officers hold high respect and importance in society and are able to manage activities in diverse areas. Since it is a government job, it comes with rewards in the form of various perquisites.

IES Official Website