opencart checkout modification (shipping maps insert)

I am looking for a freelancer to modify the checkout process of my OpenCart website. Specifically, I need to add a shipping maps insert to the checkout page.

Skills and Experience:
- Experience with OpenCart development
- Proficiency in HTML, CSS, and JavaScript
- Knowledge of integrating external APIs
- Familiarity with OpenCart checkout process and template files

Requirements:
- The freelancer should be able to add the shipping maps insert seamlessly to the checkout page, ensuring it is user-friendly and visually appealing.
- The shipping map is already available and ready to be inserted into the checkout page.
- The modification should be compatible with specific versions of OpenCart that I will provide.