Hi there ,

As per your query ,

You are a student of private local Engineering College from Mechanical Engineering but you want to earn a money in crores by cracking these companies like Uber Microsoft etc.

Firstly  you need to shifting you Mechanical Engineering to Software Engineering.

And you need to master in these skills  to crack these companies like  Microsoft ,Uber --

• firstly , you need to learn  a object oriented programming language like C++,java and you  have to master  in this programming skills.

• Data Structures And Algorithms are the main key to crack these companies without this skill you cannot achieve these companies, so you are need to do Dirty hands in Data Structures and Algorithms.
• Competitive Coding (optional)
• you have to maintain a good project or more than one on various technologies like web development , machine learning etc.

Hope you understand .In case of any query you can comment here.

Thank you .