Crazyguy,
While everyone is entitled to their views, and indeed, some of the later interpolations of Ezra and Daniel, and writings that did not make into the Tanakh (such as Tobit) show Greek influence, the Hebrew Bible as a whole is a product of the pre-Hellenistic era.
The Tanakh was compiled during the Babylonian exile, in the 500s BCE, when the Jews were cutoff from the world. This was during the end of the era of Archaic Greek society, and the Jews would not encounter the Greeks until the exile ended and the Classical Greek world began.
The Jews would first make contact with Hellenism just prior to the Hasmonean revolt at the end of the 3rd century,3-4 hundred years after the Hebrew Scriptures had been written. The introduction of Chanukah into the Jewish calendar in the 2nd century BCE, marks how late (and originally destructive) this first encounter was.
When Egypt fell to Greece, Hellenistic Jews moved to Alexandria. The Septuagint was the result, but the experiment did not last long. The Septuagint was eventually rejected by Judaism because of this Greek influence upon the text, even though even in the Septuagint it was somewhat minor. To this day Jews regard the Septuagint as a faulty and untrustworthy translation. None of the Greek additions in the Septuagint occur in the accepted Jewish text of the Tanakh. Only the Catholic and Greek Orthodox Church accept these Greek additions as canonical.