This is the 7437th most frequent Japanese word.
俊行
"俊行" is a Japanese name meaning "talented" or "gifted" (俊) combined with "conduct" or "action" (行).
In this sentence, 俊行 is used as a proper noun, representing a person's name.
俊行は新しい仕事を始めたところです。
Toshiyuki has just started a new job.
Here, 俊行 is again a proper name and shows possession when linked with "の".
俊行の紹介でこの仕事を見つけました。
I found this job through Toshiyuki's introduction.
This sentence uses 俊行 to define someone's name explicitly.