Multi-Tenant SaaS Application Development

I need a skilled developer to build a multi-tenant SaaS application. The platform should include:

Core Functionality:
- User Management: Implement role-based access control, user activity logs, and profile customization.
- Subscription Billing: Support annual subscriptions.
- Analytics and Reporting: Provide detailed insights and reports.

Ideal skills and experience:
- Strong background in SaaS application development.
- Expertise in user management systems and subscription billing integration.
- Proficiency in analytics and reporting tools.

Please provide examples of previous work and a timeline for project completion.