As an experienced and dedicated web developer, I have had the privilege to work on projects like yours numerous times. I have a strong command over Shopify theme's customization and the relevant coding, which makes me equipped to elegantly insert the badge to your product pages and ensure it performs accurately. Particularly, I've worked on developing dynamic text badges in the past -- experience that will come in handy for your project.
My approach centers around your needs as a business, so not only will I add the code effectively, but I'll also ascertain that the stock dynamically affects the badge appearance. Expect my work to be clean, scalable, and most importantly, maintainable, even after our there will still be a room for flexibility with future updates and changes.
In conclusion, by choosing me for this project, you're gaining much more than technical proficiency; you're getting a committed partner who prioritizes your success above all else. And with my diverse skill set including CSS & HTML alongside Shopify expertise and design capabilities undergoing website improvements while preserving its functionality will feel like second nature to me. Let's transform your vision into a seamless reality together.