Client-Tradesmen Web App Development

I'm looking for a web-based application that connects clients with tradesmen. This platform should allow clients to post their jobs for free, while tradesmen can express their interest in these jobs. The overall concept is similar to myjobquote.co.uk.

Key Features:
- Client-Tradesmen Messaging System: A crucial part of this app is to facilitate communication between clients and tradesmen.
- Tradesmen Interaction: Rather than bidding on jobs, tradesmen should be able to express their interest in the jobs posted by clients.
- Job Alerts: Tradesmen should receive automatic notifications for new jobs.
- Rating System: There should be a rating system for tradesmen to ensure quality and build trust within the platform.
- Secure Payment Processing: A vital feature of the app is a secure payment processing system to handle transactions safely.

Ideal Skills and Experience:
- Proficiency in web application development
- Experience in creating client-service platforms
- Knowledge in integrating secure payment systems
- Ability to develop an effective rating system
- Skills in setting up a messaging system within the app.