DOWN-on-her-luck "Occupy Wall Street" protester Tracy Postert spent 15 days washing sidewalks and making sandwiches at New York's Zuccotti Park - then landed a dream job at a Financial District investment firm thanks to a high-powered passer-by who offered her work.

The Upper West Sider, who has a PhD in biomedical science specializing in pharmacology, was unemployed and had all but given up on finding work when she joined the movement in October.

She held signs that read, "Reagan sucks," and, "I'll vote after the revolution."

But she still needed to get a job, so she made a new sign that read, "PhD Biomedical Scientist seeking fulltime employment," and on the back, "Ask me for my resume."

It caught the eye of Wayne Kaufman, chief market analyst for John Thomas Financial Brokerage. The exec was not looking to hire, but he took Postert's resume anyway.

The next day, Kaufman, impressed by her CV, sent her an email asking if she would like to come for an interview two blocks from Zuccotti Park at 14 Wall St.

"I had been unemployed for so long, I thought why not?" Postert said, adding that she is in her 30s and has no background in finance or business.

Kaufman offered her a job as a junior analyst evaluating medical companies as potential investments.

Postert said the decision to accept was painful but she has now just completed her third week as a Wall Street worker and she is already studying for her exams to be a certified financial analyst.

CEO Thomas Belesis said he believes Postert will be a great asset.

"She was ranting about Wall Street, and now she's working on Wall Street. Banks are not so bad. I hope we have opened her eyes," he said.