Big Commerce Theme Customisation based on Our Requirements

I am looking for a Big Commerce developer who can customize my online store based on my specific requirements. The focus of this project will be on enhancing the functionality and features of the store. I have a detailed list of the desired features that I would like to be implemented, and I am looking for a developer who can work on going based. Ideal skills and experience: - Strong experience with Big Commerce customization and development - Able to change some functionality. - Knowledge of HTML, CSS, and JavaScript - Ability to work efficiently and meet deadlines. -Our store is live so need to work on sandbox first