STM32 and W5500 file upload firmware

I'm looking for a firmware developer to help me with file upload functionality using W5500 and STM32. The file must be transferred from the user's computer to the MCU (STM32). The W5500 is used as a web server from which the file is to be selected and then transferred. The file is a binary file under 1Mb (to be used for firmware upgrade) that must be saved to the MCU's flash memory. Please only apply if you are familiar with the W5500 and are confident you can successfully complete the task, even better if you have already done something similar in the past. An online testbench with our PCB will be provided and your code will be tested on our PCB and must fully work for the job to be successful. Please describe your previous experience with the W5500 (or similar WizNet chips) on your application.