E-commerce Developer (OpenCart / WooCommerce)

We run a live e-commerce store and are looking for an experienced developer or small studio to handle ongoing fixes, performance work and integrations. The store is built on OpenCart (we may also move some parts to WooCommerce). It is live and taking orders, so all work must be done safely without downtime. Immediate tasks: Fix a few checkout and mobile issues, including a cart bug on mobile. Improve site speed and overall performance. Integrate an additional payment gateway with correct order status handling. Connect the store to our CRM so orders and enquiries create deals automatically. Soon after: Add delivery integration with branch selection and cost calculation in cart. Sync stock and prices with our accounting system. Possibly a SEO-safe redesign later. You should have: Strong OpenCart, WooCommerce and PHP experience. Real experience with payment gateway, CRM and delivery integrations. Clean, update-safe code and clear English communication. Please include in your proposal: - Two or three examples of e-commerce stores you built or fixed, with links. - A short note on how you work safely on a live store. - Your hourly rate and availability.