CRM Completion and Enhancement

I'm seeking an experienced developer to help finish my CRM/Field Service Management tool.

Key areas that need completion:
- Customer Management
- Functionalities: Customer profiles, Contact management, Scheduling
- Payments and Banking
- Service Scheduling
- Capabilities: Appointment booking, Automated reminders, Texting/Emailing estimates, Calendar integration
- Reporting and Analytics

Additional requirements:
- Must be mobile-friendly
- User login/account creation functionality, with a subscription payment model (details TBD)

Ideal Skills and Experience:
- Strong background in CRM and Field Service Management tools
- Proficient in database management and backend development
- Experience with UI/UX design for user-friendly interfaces
- Knowledge in implementing automated systems and integrations

Please provide a portfolio of similar projects.