The e-commerce giant has been opening new fulfillment centers around the country as it pushes to maintain its edge in delivery efficiency. It promises members of its Amazon Prime shopping club two-day shipping.

CEO Jeff Bezos said the new jobs will extend beyond Amazon's Seattle headquarters to communities across the U.S. Other roles will include engineer and software development, reflecting Amazon’s expansion of its cloud business.

"We plan to add another 100,000 new Amazonians across the company over the next 18 months as we open new fulfillment centers, and continue to invent in areas like cloud technology, machine learning, and advanced logistics," he said.

The new jobs will increase Amazon's workforce by more than 50 percent to more than 280,000 jobs. In 2011, Amazon had only 30,000 full-time employees in the U.S.

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