Looking for a Flutter expert.

Looking for a Flutter expert.
I have an app developed with Flutter before.
But now it's outdated, so I'm trying to update it with a new version.
Everything else was completed, but one thing took off.
It is an integration of Native SDK and Flutter APP.

https://developers.worldnetpayments.com/gochip:downloads:sdk

Please check this link and apply as soon as possible if you are confident.
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