Bi o di olubori idije Nigeria Got Talent, Amarachi se agbejade orin akoko re "Amarachi Dance".. 
Ni atẹle awọn ipa tẹlifisiọnu ni kutukutu lori Disney Channel sitcom Shake It Up (2013) ati eré elere ABC Family Ravenswood (2013 – 2014), o ṣe ni fiimu ti n bọ ti ọjọ-ori The Edge of Seventeen (2016) ati fiimu ibanilẹ ọpọlọ Pipin (2016).Richardson ni ipa Breakut rẹ ninu ere ominira Columbus (2017) fun eyiti o gba aami eye fiimu Independent Goham fun yiyan oṣere ti o dara julọ .. 