We need experience iOS/Android developer who has experience with Cryptography.
What we need is to decrypt the data form the Credit card Reader (MagTek) with DUKPT.
We can input BDK and KSN to the algorithm and we need decrypted data after that.
You can see the description in the attached PDF
BDK : 0123456789ABCDEFFEDCBA9876543210
KSN : 901001081913500000069