PayPal has announced that it has acquired mobile app developer Duff Research in order to deepen its mobile payment talent pool.

"Duff Research is an innovative provider of full service mobile app development for some of the world's leading brands and start-ups," said PayPal CTO James Barrese on the company blog.

Duff Research is based based in Sunnyvale, Calif. Its employees will join PayPal's technology team.

"PayPal is giving our team the opportunity to transform an industry and enhance people's daily lives with technology," Duff Research said in a statement. "They've built the industry's leading online payments platform, and our entire team is excited by the opportunity to work with the amazing group of technologists already at PayPal."

Terms of the acquisition were not disclosed.

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