Yes, you can apply for the highly competitive UPSC ESE Examination for the Prestigious Indian Engineering Service as you have completed you Diploma followed by a B.Tech degree through Lateral Entry.

For more information regarding the application process and eligibility criteria do follow the link below

https://competition.careers360.com/exams/upsc-ese

hello,

The eligibilty criteria for IES is as follow below:

(https://www.careerindia.com/upsc/ies-exam-e26.html) 1. Obtained a degree in Engineering from a university

2. Obtained a degree/diploma in Engineering from such foreign University/College/Institution and under such conditions as may be recognised by the Government for the purpose from time to time or Passed Graduate Membership Examination of the Institute of Electronics and Telecommunication Engineers (India) or Passed Associate Membership Examination Parts II and III/Sections A and B of the Aeronautical Society of India or Passed Graduate Membership Examination of the Institution of Electronics and Radio Engineers, London held after November 1959

3. Provided that a candidate for the post of Indian Naval Armament Service (Electronics Engineering Posts and Engineer Group 'A' in Wireless Planning and Coordination Wing/Monitoring Organization) may possess any of the above qualifications or the qualification mentioned below namely: M.Sc. degree or its equivalent with Wireless Communication, Electronics, Radio Physics or Radio Engineering as a special subject For Indian Radio Regulatory Service - M.Sc. degree or its equivalent with Wireless Communication Electronics, Radio Physics or Radio Engineering as a special subject or Master’s Degree in Science with Physics and Radio Communication or Electronics or Telecommunication as a special subject

all the best!!