Bubble.io Finance SAAS Development

I'm seeking an experienced Bubble.io developer to create a Finance SAAS platform. The platform should include the following features: Quotation, Expense Tracker, and Invoice Creation.

Key Requirements:
- Integrate tools for Quotation, Expense Tracking, and Invoice Creation
- Support for Admin user role
- Payment gateway integration is necessary

Ideal Skills and Experience:
- Proficiency in Bubble.io development
- Experience with payment gateway integration
- Familiarity with finance-related SaaS features
- Strong problem-solving skills and attention to detail

Please provide examples of previous work and relevant experience.