Gennady joined the police no later than 1994. Most of his career was spent maintaining public order and working with minors.
In August 1994, Moiseychik worked as a district inspector at the Leninsky District Police Department in Minsk. A year later, he transferred to the juvenile affairs inspectorate. He was a district police officer, then a senior district inspector, and in 2001, he became head of the juvenile affairs inspectorate at the Leninsky District Police Department. Moiseychik later transferred to the Moskovsky District Police Department. As of early 2015, he held the position of deputy head of the law enforcement and crime prevention department and held the rank of police lieutenant colonel.
His commentary on domestic violence has been preserved in the archive of the Moskovsky District Administration website. On behalf of the police, Moiseychik urged victims to speak out and warned that family conflicts can lead to particularly serious crimes.
He was fired from his job in June 2015. The databases show that the reason for his dismissal was absenteeism.
According to a fellow blogger , Gennady Moiseychik attended protests in 2020. He was allegedly captured on video cameras, but authorities didn't come for the former police officer until three years later: he was detained in Minsk on July 12, 2023.
According to Moiseychik's testimony in his cell, he was detained by a whole busload of "cosmonauts." During the arrest, security officers beat his son (who has a disability), and when his father rushed to defend him, they began beating Moiseychik himself—with batons, kicks, and punches. They broke his ribs and nasal septum. The beatings then continued in the police station building, in the office where Moiseychik himself once worked.
In November 2024, Moiseychik's name appeared in Lukashenko's decree stripping former security officials of their military and special ranks.
