In 2013, he was appointed as Minister of Security and Border Affairs of Kayah State in Khin Maung Oo's first cabinet.

Later, he moved to the Office of the Commander in chief of Defence Services in Naypyitaw with the rank Major General.

[5] On 31 January 2022, the incumbent chief minister Khin Maung Oo was dimissied.

[6] Zaw Myo Tin retired from his military post and became the head of Kayah State Government on 1 February 2022.

[7] Zaw Myo Tin was ousted on 29 November 2023 when anti-junta forces took control of most of the state during Operation 1111.