His later court rank history was: he left the post of Uhyoe no kami on September 25, 996 and was assigned Kageyushi chokan (Secretary of the Office of Investigators of the Records of Outgoing Officials), served as Shuri daibu (Master of the Office of Palace Repairs), became Uchujo (lieutenant general of the Imperial Palace Guards, right division) on September 21, 1001, was transferred to Jibusho (the Ministry of Civil Administration) on October 27 of the same year, promoted to Jusanmi (Junior Third Rank) seven days later, and reached the Shosanmi rank (Senior Third Rank) on May 6, 1003.
その後の俊賢の官暦は、長徳2年（996年）8月5日に右兵衛督を止め勘解由使長官に任じ、修理大夫を経て長保3年（1001年）8月25日右中将、同10月3日治部省となり、7日後に従三位、同5年（1003年）3月26日には正三位に昇った。