Customizable Online Exam Web Application

I'm looking for a skilled developer to create an online exam web application with the following features:

- User registration and login
- Exam creation and management
- Question bank and randomization
- Timer and exam duration
- Results and grading
- Secure data storage
- Facial recognition for proctoring
- Screen sharing for proctoring
- Browser lockdown for proctoring
- Support for multiple choice and/or essay questions

The ideal candidate should have experience in:
- Developing web applications with complex features
- Implementing proctoring technologies, especially facial recognition
- Data security and encryption
- UI/UX design for customizable and flexible interfaces

Please share your relevant experience and any similar projects you've worked on.