We are seeking an experienced PHP developer to integrate a shipping software plugin for our WordPress based e-commerce website. The chosen candidate must have extensive experience designing and developing shipping plugins for WordPress. Some of the key requirements for the plugin include the ability to calculate live shipping rates from major carriers during checkout, allow customers to select shipping options, automatically generate shipping labels, and sync orders with carriers. The developer should be able to evaluate our existing site architecture and recommend the best shipping solution. Integration with our billing and order management systems is essential. The plugin must have a clean and intuitive backend interface for managing carriers, rates, and order fulfilment. Security and performance optimization will also be important factors. Applicants should have proven experience delivering similar projects on time and on budget. Portfolio examples including past integrations, plugin builds or modifications to existing plugins are highly desired. Please provide estimates on time and costs involved along with your qualifications. We look forward to reviewing proposals from qualified developers.