NIT Surathkal - National Institute of Technology

As your son has scored very well in JEE Mains, and his predicted rank will be around 3.8K, and as per his rank his chances are very strong to get ECE at NIT Trichy or Suratkal. For better guidance, have a look over the link:
https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor.

Yes, definitely you can get awesome jobs at NIT College and especially in civil you will get awesome job. As I know one of my best friend was in NIT Surat, he was get 50,000 per month salary. Yes, there is great chance.

If you are from ST category, then you may get a seat in NIT, Suratkal.Or, you may follow the link:
https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor

See, the placements of both the colleges are almost the same and the problem is the fee if you can pay the RVC fee then opt for that, otherwise, you can drop a year.

JEE Main Rank 4557, AIR, OBC
As per the predictions, chemical in round 7
Metallurgy in round 1
Mining in round 1
CSE in IIITD in round 1
ECE in IIITD in round 1.

As per the predictions, mining in round 1, metallurgy in round 1.
Follow,
https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor

Please visit the institute website for the application availability. Eligibility:
Candidate must be a graduate in relevant field from a recognised University. Admission Process
Written Test:
Eligible candidates need to appear for the Written Aptitude Test conducted by the institute. Merit Screening:
Admission is based on the score obtained in Written Aptitude Test and performance in the qualifying degree programme.

Admission is through counselling based on rank in JEE Mains. Admissions is based on score obtained in SAT through DASA scheme for Foreign Nationals/Persons of Indian Origin/ Non-Resident Indians/Overseas Citizen candidates. Please wait for the ranking charts to be displayed.

JEE-Main Rank 48468, AIR, GEN
Follow
https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor

JEE Main Rank 478634, AIR, OBC
Follow
https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor.