correction:
My name is Seulyi, and I was born and raised in South Korea. I currently work as a senior accountant at a national research institute in Korea. I earned my undergraduate degree in economics, and I began my career 9 years ago at a movie investment company. Today, I oversee financial statements and tax filings, working alongside two junior accountants, and I obtained my CPA license earlier this year. As my role continues to grow, I recognize the need to strengthen my academic knowledge and expand my network with like-minded professionals. I’m aiming to achieve significant career growth through this opportunity.

Another suggestion: 

My name is Seulyi, and I was born and raised in South Korea. I am currently employed as a senior accountant at a national research institute in Korea, where I oversee financial statements and tax filings with the support of two junior accountants. I hold an undergraduate degree in economics and began my career 9 years ago at a movie investment company. I earned my CPA license earlier this year. As my responsibilities have increased, I recognize the importance of strengthening my academic foundation and expanding my professional network. I am eager to leverage this opportunity to further advance my career.