Reynoso started his coaching career immediately after retiring at
Club Necaxa in 2004 and was appointed as the assistant coach of the club serving under
Raúl Arias. In 2012, he returned to his former Cruz Azul to serve as the assistant coach to
Enrique Meza, the coach who signed him for the club in 1994.
Melgar Reynoso moved back to his native Peru and signed for
Melgar in January 2014. In 2015, he led the club to the
2015 Torneo Clausura and ultimately the
2015 Peruvian Primera División to end their 34-year championship drought. This resulted in him winning his third league title at the end of his three-year tenure. He was later replaced by
Nicolás Larcamón.
Cruz Azul In January 2021, Reynoso was appointed the head coach of his former club Cruz Azul, replacing
Luis Armando González who was working in a caretaker role. He won his four out of his first six matches in charge picking up the 12 points, the highest in a Cruz Azul's manager's debut in the last six years. On 31 May 2021, he led Cruz Azul in making history by winning the
Liga MX when Cruz Azul beat
Santos Laguna 2–1 on aggregate in
the final to claim the
Guardianes 2021 season title. It was the club's ninth in all, but the first in 24 years, ending a title drought for the
Los Azules since 1997 when he captained them to win the trophy
. On 18 July 2021, Reynoso led Cruz Azul to the
2021 Campeón de Campeones beating
León by 2–1 at
Dignity Health Sports Park in
Carson, California. The
match was between
Liga MX season's Apertura and Clausura champions with León being the Apertura Champion. On 18 May 2022, Reynoso was dismissed by Cruz Azul.
Peru On 3 August 2022, Reynoso was presented as the new Head Coach of
Peru's national football team, after the successful management of
Ricardo Gareca. He left Mexico, and his 1st match would be against Mexico with a 1–0 loss. He would pick up his 1st win with Peru on 27 September 2022, in a 4–1 win against
El Salvador. He would then win against
Paraguay and
Bolivia, both 1-0 just before the
Qatar 2022 World Cup. After failing to gain a win after 6 matches in
2026 FIFA World Cup qualification (CONMEBOL), Peru were sitting on 2 points. Reports had come in that Peru were searching for a new Head Coach. On 23 November 2023,
Juan Carlos Oblitas would officially state that Reynoso wouldn't resume being the manager of Peru. On 13 December 2023, the
Peruvian Football Federation published a statement, confirming Reynoso’s departure.
Melgar return On 5 August 2025, after more than a year without a club, Reynoso was announced as manager of Melgar. The following 21 March, he left the club by mutual consent. == Career statistics ==