Embedded Firmware Bug Fix & Debugging

I have a few battery-powered prototypes built on the Nordic nRF52 that need some firmware issues sorted out. The firmware is already developed, but there is a BLE bug I need help with. The connection works, but the latency and throughput are not where they need to be, so the link feels slow and the data does not come through as fast as it should. I need someone who knows BLE well enough to tune the connection and get the performance up. Looking for someone strong with nRF52 and BLE who has dealt with this before. Should be a quick job for the right person. This is short trial task for ongoing opportunity .