In 2022, Seksan was promoted to the senior squad where he make his official debut in the 2022–23 Thai FA Cup quarter-final match against Phrae United on 1 March 2023 coming on as a substitute.
On 20 September 2023, Seksan make his AFC Champions League debut in a 4–1 win over Chinese club Zhejiang Professional.
In November 2024, Seksan was called up by Thailand national team for friendly matches against Lebanon and Laos.
In late November, he was selected in the Thailand squad for the 2024 ASEAN Championship.
Buriram United This biographical article related to a football midfielder from Thailand is a stub.