MERN Stack Developer Needed

I'm looking for an experienced MERN stack developer to work on my existing application. The primary focus will be on feature development, although you'll also be tasked with fixing bugs and improving performance.

Key Responsibilities:
- Develop and implement user authentication systems
- Integrate payment gateways
- Build real-time update functionalities
- Incorporate AI-based GK learning features

Ideal Skills and Experience:
- Proficiency in MongoDB, Express.js, React.js, Node.js
- Strong background in feature development for web applications
- Experience with user authentication and payment integration
- Knowledge of real-time data handling
- Familiarity with AI technologies is a plus
- Problem-solving skills and attention to detail

Please provide examples of similar work done. Looking forward to your proposals!