Kim Jin-tae, former deputy chief at the Supreme Prosecutors' Office, was nominated as prosecutor general, Sunday.
Kim's nomination came a month after his predecessor Chae Dong-wook resigned over allegations that he had an illegitimate child.
"President Park Geun-hye has nominated Kim for his ability to bring normalcy to the prosecution and wrap up pending issues," senior presidential press secretary Lee Jung-hyun told reporters.
The 61-year-old nominee led the prosecution last year as acting chief when Han Sang-dae resigned as top prosecutor in disgrace.
"Kim is respected for HIS upright character and abundant experience in investigating important cases," Lee said.
He led investigations of major cases such as former President Roh Tae-woo's slush fund and a corruption case involving the now-defunct Hanbo Group.
"I feel the utmost responsibility being named a candidate for the top post at a time when the country's prosecution faces crises and daunting tasks," Kim was quoted as saying after his nomination.
The prosecution is in disarray after Chae's departure, worsened by a televised dispute between senior prosecutor Yoon Seok-yeol -- who was removed as head of a special investigation team into alleged interference by the National Intelligence Service (NIS) in the last presidential election -- and his superior Cho Young-gon, director of the Seoul Central District Prosecutors' Office, at a National Assembly audit, Monday.
Yoon claimed there was external pressure on his team, while Cho argued Yoon disobeyed legal procedures in handling the case and was insubordinate.
The nominee will undergo a confirmation hearing next month.
Main opposition Democratic Party spokesman Kim Kwan-young said the nominee could be another "proxy" prosecutor general, citing the candidate was close to Kim Ki-choon, the presidential chief of staff.
"It is worrisome that the presidential chief of staff is attempting to control the prosecution by sending one of his stalwarts," the spokesman said. "Also it is suspected that he might be a mouthpiece for Cheong Wa Dae which is trying to cover up the NIS's alleged interference in the Dec. 19 presidential election," he said adding that his party will thoroughly examine the candidate's qualifications.
The ruling Saenuri Party welcomed the nomination.
Party spokesman Yoo Il-ho said, "He is widely known as a respected figure in the prosecution. Kim's nomination was a good choice and he will adhere to political neutrality."