Hello Hemanth, after or during btech you can enhance your profile by learning these courses like AUTOCAD, SOLIDWORKS, MATLAB, NX CAM, SIMSCALE, CATIA, CREO, ANSYS.

these softwares have very deep learning and are very useful in core indutries.

I Hope this helps. All the best.

hii hemanth

the most demanding as per your mechanical branch which usually be suport for the core companies are listed below

• Design and Analysis of pressure vessel ( Catia, UG NX)
• BIW Domain studies ( Catia, UG NX, Crew)
• Automotive Interior trim design,
• Automotive Exterior trim design,
• Aerospace component design,
• Wiring harness design,
• Vehicle exhaust design and analysis,
• Aerodynamic design,
• Plastic trims design,
• CAD

even there are other courses usually that IT companies take you in if you have knowledge 

are c, C++,Python,JAVA 

hope this helps