Secondary development of the Shopify website

We currently have a website that requires secondary development. We are an electric bicycle manufacturer based in the United States. Our website is quite old and was developed a long time ago. I need to conduct secondary development on it, not just simple modifications of the UI visual effects. I need to incorporate some functions as well. Let me elaborate on my current development requirements: 1: Frontpage modification: Add carousel images/videos, add an event page section, add a pop-up window for entering the frontpage, and then add some sections for introducing services to the frontpage. In summary, restructure the frontpage. 2: Navigation bar: Currently, the navigation bar needs to be adjusted and new blog, services, and some new navigation buttons need to be added. 3: Add an event page. Since it's summer now, we need to do promotions, so set up coupons and create a landing page for the event. I already have the HTML design draft for this page. You just need to copy and modify it. It's very simple. 4: I need to add a reservation for test ride button to the current purchase section. After clicking, customers can select a store, fill in the information, and then make the reservation successfully. (Note: Our data is connected to Lark. That means, Shopify's all data will be connected to Lark. Currently, customer data and order data have been connected. We create store data in Lark, use the Google API to scrape the store's business hours, and then synchronize it to the Shopify front end. Here, when customers select a store, it can automatically recommend the nearest store to them, as well as whether the store is open and the opening hours. These can all be seen. I will explain this in detail later.) 5: When customers make a purchase and go to the checkout, they can choose to pick up the product at the store, just like the Apple website when buying a phone allows for self-pickup. There are still some other parts that I will edit into the doc before work and organize into the development document. Currently, I need to take action quickly and am in a hurry. Let me briefly introduce this project. Currently, we are developing Shopify, which is for end-user viewing. I will also create a WordPress website, which is used by our distributors and end-users for after-sales services. At the same time, the data needs to be connected to Lark. This means they have a triangle relationship - distributor - user - us (the brand). Therefore, the developers need to be not only proficient in front-end development, but also have excellent aesthetic skills and must be proficient in back-end development. Eventually, Shopify, WordPress, and Lark will be interconnected. For example, vehicle reservation for test rides (as we mentioned earlier), when a customer clicks for a test ride and makes an appointment, the backend of the WP website will automatically create a work order, and Shopify will generate a verification code. The multi-dimensional table of Lark will record all these data. Currently, I only need to start the front-end visual effect development for Shopify. I need to complete all the visual effects and the deployment of backend functions. (What I mean is, for example, when the test ride is clicked, it will enter the corresponding page, but the function has not been realized yet because it is a backend function.) The current quote I provide is only for the secondary development of the Shopify front-end UI. After the front-end is quickly modified, it will enter the backend. (You may think the cost is a bit low, but we are not just modifying Shopify, we have a lot of work to do. If you have a long-term perspective and rich experience in business, we are very welcome.) Requirements: Must be very proficient in Shopify development and familiar with Lark, including front-end design and back-end development. Must be a full-time developer. Currently, there are no other projects in progress. I need to fully devote myself to our project and advance it stage by stage. Weekend availability is required. We very much welcome workaholics. You can respond to our questions at any time. At least five years of experience in Shopify development is required. In summary, I need that we can maintain communication at any time.