Haha, I’m glad that you think my heritage is “pretty cool”.
To answer your question, yes, but it depends on where you look and how fluent you are. I live in the San Francisco Bay Area and I’m usually around San Francisco proper or the South Bay (i.e. Sunnyvale, Mountain View, Cupertino). And there are a lot of bilingual jobs, though not many beyond the service/administrative sector. I don’t know about Japanese, but Korean bilingual jobs demand a high level of proficiency since most of their cliental speaks exclusively Korean. They also ask you to know industry related jargon like financial terms if you work as an accountant’s secretary or something like that. There are probably a lot more in SoCal in the Los Angeles area, since there’s a greater concentration of Koreans there. They’re not exactly hard to find, but they are hard to get.
Hopefully someone in the replies will say I’m wrong but in my experience, bilingual jobs are pretty hard to get if you’re not a native speaker.