On 13 August 2019, Amissi signed a two-year contract with an option for one further season with Heracles Almelo.
[3] On 23 January 2023, Portugal's Liga 3 side União de Leiria announced the signing of Amissi on a two-and-a-half-year contract.
[4] On 6 August 2023, after making just 5 appearances for the club, Leiria announced that Amissi's contract had been terminated by mutual agreement.
[5] Later that month, he moved to Egypt to play for Baladiyat El Mahalla, followed by Modern Sport a year later.
[6] He made his Burundi national team debut on 11 June 2019 in a friendly against Algeria, as a 58th-minute substitute for Hussein Shabani.