AI-Driven Feedback System for Programming Tasks

I'm in need of a sophisticated AI-powered feedback system designed to enhance the learning experience for programming exercises. This system should primarily focus on:

- Automated Grading: The system should be able to grade multiple choice questions, coding challenges, and project-based assignments without human intervention.
- Code Suggestions: The AI should be capable of providing real-time, valuable code suggestions to learners, helping them understand better and improve their coding.
- Error Detection: The system needs to identify errors in the code, providing learners with insights on their mistakes and how to fix them.

The system should initially support Python, JavaScript, and Java, with the potential to expand to other programming languages in the future.

Ideal candidates for this project should have a robust understanding and experience in AI, machine learning, and programming education systems. Previous work on building automated grading systems or similar AI-powered educational tools will be highly regarded.