Yes, you can definitely pursue Chartered Accountancy (CA) after completing your B.Tech in Computer Science Engineering.Having a bachelor's degree makes you eligible for exemptions from the initial stages of the CA course conducted by the Institute of Chartered Accountants of India  With a B.Tech degree, you will be exempt from the CPT (Common Proficiency Test) which was the entry-level test earlier. You will be able to directly enter the Intermediate level of the CA course.

https://finance.careers360.com/articles/ca-full-form

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