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“The team at Callstack are the most experienced and trusted engineers in the React Native community and ecosystem.”

“Callstack made the perfect staff augmentation partner. Their engineers proved to be a crucial part of our mobile app relaunch project.”

“I appreciate their attention to detail, flexible approach and a high degree of expertise. I definitely recommend the Callstack team!”

“The collaboration was great throughout, with Callstack engineers seamlessly working as part of our agile teams.”
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