SaaS Hotel Channel Manager Development

I'm seeking an experienced developer or team to build a SaaS-based hotel channel manager that integrates with major OTAs, including Airbnb, Expedia, Goibibo, and MakeMyTrip.

Key Features:
- User-friendly dashboard for hotel/property owners
- Real-time syncing of availability and rates
- Two-way OTA API integration
- iCal support for smaller OTAs
- Reservation and calendar management
- Automated notifications via email or messaging platforms

Additional (Optional) Features:
- Direct booking engine
- PMS integration
- Mobile-responsive design or app
- Payment gateway integration (e.g., Razorpay, Stripe)

Requirements:
- Proven experience with OTA or PMS integrations
- Estimated timeline and budget
- Suggested technology stack (Node.js, PHP/Laravel, Python, React.js, etc.)