Web Application Bug Fixing and Enhancement

I'm in need of an experienced developer who can assist with resolving existing bugs and issues within my web application. Additionally, I'd like to explore the potential for making enhancements to the system for better performance.

Key Responsibilities:
- Identify and address any existing bugs within the web application
- Fix and improvise existing bugs provided by project manager
- Enhance the application's functionality where necessary
- Develop reports, MIS module with the existing application
- Ensure the UI/UX is user-friendly and seamless
- Integrate e-commerce with the application
- Convert web application to use multi-tendency for SaaS enablement
- Design and develop a mobile application in addition to be web application

Ideal Skills and Experience:
- Proven experience in web application development
- Proficiency in bug fixing and system enhancement
- Strong UX/UI understanding for application improvement.