A person who specializes in computers and technology.

कंप्यूटर विशेषज्ञ

English Usage: The computer specialist fixed my laptop in no time.

Hindi Usage: कंप्यूटर विशेषज्ञ ने मेरी लैपटॉप को जल्दी ठीक कर दिया।

A person highly skilled in a specific area or field.

विशेषज्ञ

English Usage: She is a specialist in pediatric medicine.

Hindi Usage: वह बाल चिकित्सा में एक विशेषज्ञ है।