In 2023, Koh won the Star Awards for Best Actor for his critically acclaimed role as an intellectually disabled in the drama series Your World in Mine.

He graduated from Ngee Ann Polytechnic with a Diploma in Financial Informatics in 2014, following which he completed his national service in the Republic of Singapore Air Force (RSAF) with the rank of Lieutenant.

[3] In 2017, after serving National Service, Koh started his career by debuting in Channel 8’s army-themed drama When Duty Calls, a major role that charmed viewers' hearts.

[7] In addition, Koh acted in a Gilbert Chan movie 23:59: The Haunting Hour as a soldier tasked to kill a snake spirit.

[12] In 2022, Koh soared to fame after starring in the immensely popular Your World in Mine as an intellectually disabled Zheng Tiancai.