[2] In 1994, he completed his service there and was appointed as a senior operational representative of the investigative department of the Ministry of Internal Affairs of the Region.

[1] In the years 1995–1996, Sädenov was the head of the anti-car theft and anti-kidnapping unit of the Öskemen Internal Affairs Department, and from January 1, 1996, to March 19, 1996, he was the head of the property and drug addiction crime detection unit of the city's Criminal Investigation Department.

From there, he went on to hold various positions in the Ministry and in June 2016, he was appointed as the Head of the Akmola Regional Police Department.

Sädenov was introduced to the staff of the Police Department by the Minister of Internal Affairs Erlan Turgymbaev and the Äkim of the city, Bakhyt Sultanov.

On 26 January 2022, by the order of the President Tokayev, he was appointed a deputy to then-Minister of Internal Affairs of Kazakhstan, Marat Ahmetjanov,[5] and for that reason was dismissed from the position of chief policeman of Astana.