With over 12 years of experience and a vast skill set that includes everything from front-end development using React and Angular to designing and implementing robust back-end systems with MySQL and Postgres, I am confident that I can meet your requirements for the Shopify app. My ability to utilize various databases including Mongo DB would be particularly beneficial when integrating automatic image recognition to crop out headshots. The effect of the design would then be displayed effectively on the frontend, just like the ones you've shown from Santa Socks or My Face Socks.
Furthermore, my diverse background enables me to see beyond just solving coding puzzles. Combining my web development expertise with my experience in firmware development on STM8/32/ESP32 would ensure that your app runs smoothly without any hitches. Having worked on various wireless protocols like Wi-Fi and BLE, I can also assure you that I have more than a sufficient knowledge base to handle this project adequately.
Lastly, as a result-oriented professional with a strong commitment to delivering tasks with efficiency and precision, I am confident in guaranteeing you error-free and timely code delivery for your Shopify app. I look forward to bringing all these skills and more in helping your app come into fruition.