Yamamoto akatanga basa rake muna 1990 semutori wenhau weAsahi Newstar, nhepfenyuro yeterevhizheni yeTV Asahi, akazova mutori wenhau wevhidhiyo uye mutungamiriri wemapepa ezvinyorwa uye mapurogiramu enhau. Akasiya nhepfenyuro muna 1995 kuti abatane neJapan Press, boka rezvenhau rakazvimirira rakavakirwa muTokyo, iro rinofukidza nhau uye rinogadzira zvinyorwa zvekutepfenyura kweTV nemagazini akatarisa kuMiddle East neSouthwest Asia. Yamamoto, anozivikanwa nekushandisa makamera emavhidhiyo nemaoko uye nekuzvigadzirisa ega, akashanda semunyori weJapan Press munzvimbo dzakakomba dzakadai seKosovo, Bosnia, Chechnya, Indonesia, Afghanistan muna 2001, Iraq muna 2003 neUganda. Akashuma pamusoro pekudzvinyirirwa kwevakadzi veAfghan muKabul uye akabvunzurudza nhengo dzeTaliban muAfghanistan. Akashanda somunyori chaiye weNippon TV muIraq. Iye akapona mubatanidzwa tangi shell kurwisa Palestine Hotel muBaghdad musi 3 April 2003 apo vatori venhau vaviri kubva "Reuters" uye Spanish nhepfenyuro vakaurayiwa. Yamamoto akachinjira kushanda semuratidziri wenhau weNippon TV nhau chirongwa muna 2003 na2004, achigamuchira Vaughn-Uyeda Chirangaridzo Mubairo Mubairo weakafukidza hondo yeIraq. Akanga ariwo mudzidzisi akasarudzika paWaseda University's journalism chikoro uye pachikoro chake, Tsuru University. Mharidzo dzake dzakanga dzine chokuita nemigumisiro yehondo pavanhuwo zvavo uye basa rezvenhau munguva yehondo. Pashure peKudengenyeka Kukuru Kwokumabvazuva kweJapan
musi wa11 Kurume 2011, Yamamoto akashanyira nzvimbo dzakakanganiswa kuti anyore kukuvara kwakakonzerwa. MunaNovember 2011, akatanga kushanda semubatsiri akazvimirira kuHurumende Revitalization Unit aine basa rekudzikisa mari isingakoshi muhurumende yeJapan. Yamamoto akanga ari pabasa muSyria nokuda kweNippon TV kuti afukidze hondo yevagari vemo iri kupfuurira uye migumisiro yayo pavanhuwo zvavo veSyria paakaurawa.