Are you a business traveler who wants to jump to the front of the waiting list for Tokyo's most exclusive restaurants? Check out this former Goldman Sachs Group Inc. trader's new venture.

Takashi Yamada, who worked at the Wall Street firm for 15 years, started a company to help visitors book tables at some of the most sought-after restaurants in Japan. Tableall.com began seating customers last month.

Getting into Japan's top eateries is no easy task, especially for those who don't know the language. Many places are hard to find out about because they rely on word-of-mouth and are tucked away in backstreets. With few tables in small spaces, the most coveted among them fill up fast. Visitors who use hotel concierges to seek a reservation often find out that a place is locked up for months.