Translation of "Cofundador" in English

Entonces, un día, mi cofundador, Alvin,

Then one day, my cofounder, Alvin,

Mi cofundador y yo lo hicimos,

my co-founder and I did,

Dos, si no tienes un cofundador,

Two, if you don't have a co-founder,

Sé que soy el cofundador de él,

I know I'm the co-founder of it,

Moscú; y el cofundador de WhatsApp, Jan Koum,

No solo Mike, mi cofundador, dale un regalo,

Not only did Mike, my cofounder, get her a present,