Zango's debut at an international athletics competition was at the 2013 Summer Universiade, where he competed in the triple jump. In the qualification round his best jump was 15.74 metres, a distance that qualified him for the final. In the final, Zango finished sixth with a jump of 15.96 metres. His jump was 1.05 metres smaller than the jump of gold medalist, Ukrainian Viktor Kuznyetsov, and 61 centimetres smaller than the bronze medalist, Kazakhstani Yevgeniy Ektov. Also in 2013 was the 2013 Jeux de la Francophonie. At the 2013 Jeux de la Francophonie, Zango competed in the triple jump. He jumped 15.97 metres to finished tenth in a twelve-athlete field. Zango's next major competition was the 2015 Summer Universiade, where he competed in both the long jump and the triple jump. In the long jump, Zango's best jump was 6.73 metres, a distance that placed him 30th in qualification, out of 36 athletes. He did not qualify for the final. In the triple jump, Zango qualified for the final after jumping a distance of 16.59 metres in the qualification round. In the final, Zango jumped 16.76 metres, a distance that won him the silver medal. Zango's jump was 53 centimetres smaller than the gold-medalist's jump of 17.29 metres. Zango jumped the same distance as bronze medalist Xu Xiaolong but, as Zango's second best jump was further than Xiaolong's, Zango won the silver medal on count back. Zango was Burkina Faso's only medalist at the 2015 Summer Universiade. Zango competed at the 2015 World Championships in the triple jump. In the competition, all three of his jumps were fouls and therefore he recorded no mark. Zango then competed in the 2015 African Games. Zango finished fifth in the triple jump with a jump of 16.36 metres. Zango was 19 centimetres behind the bronze medalist, Mamadou Chérif Dia of Mali. At the 2016 African Athletics Championships, Zango won the silver medal in the triple jump. He jumped 16.81 metres, which was 32 centimetres less than the distance jumped by the gold medalist, Nigerian Tosin Oke. Zango jumped four centimetres further than the bronze medalist, Godfrey Khotso Mokoena of South Africa, and 20 centimetres further than the fourth-placed athlete, MauritianJonathan Drack.
At the 2016 Summer Olympics, Zango competed in the triple jump. In the qualification round, Zango jumped 15.99 metres. His jump was the 34th best out of 47 athletes. Zango's jump was 62 centimetres less than the shortest jump by an athlete that qualified for the final, Cuban Lázaro Martínez, and therefore, Zango was eliminated from the competition.
Prior to the 2019 World Championships in Doha, Burkina Faso's best Athletics World Championship result was 10th place for Franck Zio in the long jump at the 1995 World Championships in Gothenburg. Qualifying for the final in Doha, Zango performed consistently well with 17.46 m in round 2 and 17.56 m in round 5, before setting a new African Record with a distance of 17.66 m in the sixth and final round. With this record, Zango claimed the bronze medal - his first at a major championships.
