Firmware Development for Nordic Semiconductor's nrf52 module -- 2

We already have the source code of a firmware developed for nrf52832-powered sensor module , built on SDK 13.1.0 version . The freelancer is required to update the firmware code as par SDK_17.1.0 version . The amount of work is quite small ; But the freelancer must have detailed knowledge and experience in nrf52-based firmware development . He/she will analyze the source code and perform the incremental update/modification of it , as par the sensor PCB that we have . The PCB has been tested to be perfectly working . The preferred freelancer will have detailed experience in Bluetooth low Energy(BLE) protocol , nrf52 , ARM processor , C programming , SPI protocol(Serial Peripheral Interface) .