I’m ready to commission a full-cycle build of a Client Management System that will streamline how we capture leads and measure sales performance. The core of the project is straightforward: create a secure, scalable application that works just as smoothly on a desktop browser as it does on a mobile device. Integrations Email marketing and payment are mission-critical to us. Please wire the system to well-known email marketing tools (think Mailchimp, Sendinblue, etc.) and enable seamless payment processing—WeChat Pay and Alipay are priorities, with room to add others via modular gateways. Regional preference Because most of our users and compliance requirements sit inside mainland China, I prefer to work with a developer or team already familiar with local hosting, data-security norms, and the practicalities of ICP filing. Mandarin communication is a plus, though not mandatory if documentation can be provided bilingually. Deliverables - Production-ready CMS encompassing lead tracking and sales reporting modules - Responsive UI/UX tested on major desktop browsers, iOS, and Android - Plug-and-play integration layers for designated email marketing tools and payment gateways - Deployment scripts, source code, and concise English/Chinese technical documentation If you’ve shipped similar SaaS or CRM solutions before—especially for the China market—let’s discuss timelines and your preferred development stack.