Judicial Commissioner of the Supreme Court Lee Kim Shin, 54, will complete his one-year term on Thursday.
According to The Straits Times, the Supreme Court will have seven judicial commissioners and 14 judges including the Chief Justice after Mr Lee's departure.
Judicial commissioners have the same powers and functions as Supreme Court judges, but are appointed for a specific period.
Judicial Commissioner Lee was appointed as Judicial Commissioner of the Supreme Court on Jan 2 this year.
He graduated with a Bachelor of Laws, LLB from the National University of Singapore in 1985. He was admitted as an Advocate and Solicitor in Singapore in 1986 and specialises in corporate and commercial law.
On the completion of his term, Judicial Commissioner Lee said: "It is a great honour to have been given the opportunity to serve as a member of the Bench.
"The past year has been a very enriching and invaluable experience for me."
He also thanked Chief Justice Sundaresh Menon and members of the Bench for "sharing their wisdom and experience with me and for their warm friendship throughout my term of office, which I will cherish greatly."
Chief Justice said: "I thank Judicial Commissioner Lee for his dedication and commitment to the Bench and for bringing his expertise in private sector corporate and commercial law to the Supreme Court. I wish him all the best in his future endeavours."