Nierras is the current head coach of Stallion–Laguna which plays at the Philippines Football League.
The under-17 team under Nierras won the 2006 PFF National Women's U-17 Championship which was held in San Carlos, Negros Occidental in May.
[5][6] Nierras denied the accusation, insisting that a travel agency was responsible for booking the tickets and not him.
In February 2015, it was reported that PFF General Secretary Ed Gastanes said that the women's national team didn't have a head coach.
[9] In July 2018, Nierras temporarily left his club, Stallion Laguna to complete an AFC "A" Coaching Certificate Course.