Teensy to ESP32 Data Transfer Code

I'm seeking an experienced developer to create optimized test code for transferring data from a Teensy 4.1 to an ESP32 WROVER IE via SPI. The data, stored on an SDCard connected to the Teensy, needs to be efficiently and reliably transferred for upload.

Key Requirements:
- Average data file size: 100MB
- Teensy configured as SPI Master, ESP as SPI Slave
- Speed optimization is crucial
- Data integrity verification is essential
- Transfer progress displayed as percentage completion on serial terminal
- Basic web server on ESP to select and download files

Ideal Skills and Experience:
- Proficient in SPI communication
- Experience with Teensy and ESP32 programming in Arduino IDE
- Strong focus on data integrity and transfer optimization

Please note:
- You must have access to both ESP32 and Teensy 4.1 for testing
- Connection schematic will be provided