Build a Next.js SaaS Platform for Practicing Multiple-Choice Questions

I am seeking an experienced [login to view URL] developer to create a SaaS (Software as a Service) web application designed to help users practice multiple-choice questions across various topics. The platform should be highly general and flexible, allowing for easy management and scalability. The goal is to provide users with an intuitive and effective tool to prepare for exams and tests, while ensuring the admin (myself) can effortlessly manage content and user interactions. Project Overview: The web application will: Allow users to create accounts, log in, and practice multiple-choice questions uploaded by the admin. Enable the admin to upload question sets in a standardized format (e.g., JSON), covering various topics. Segment questions into manageable sets for users to practice (e.g., 20 questions at a time). Provide immediate feedback on answers and track incorrect responses. Offer users the ability to re-practice only the questions they answered incorrectly until all are answered correctly. Be built using [login to view URL] for optimal performance and scalability. Key Features and Requirements: Technology Stack: Must be developed using Next.js. Utilize modern web technologies (HTML5, CSS3, JavaScript/TypeScript). Responsive design compatible with desktop and mobile devices. User Authentication and Accounts: Secure user registration and login functionality. Implement authentication mechanisms (e.g., JWT, OAuth). Password encryption and secure session management. Profile management where users can view their progress. Admin Panel: Secure admin login separate from user accounts. Easy-to-use interface for uploading question sets in JSON or CSV format. Each question includes: Question text. Multiple-choice options (e.g., a, b, c, d). The correct answer. Ability to categorize questions by topics (e.g., Electricity, Aviation). Manage and edit existing questions and topics. View user progress and statistics (optional). Question Practice System: Question Segmentation: Users can choose to practice a subset of questions (e.g., 20 out of 100). Option to select specific topics or mixed questions. Immediate Feedback: Upon selecting an answer, indicate correctness: Correct answers: display a green checkmark. Incorrect answers: display a red "X". Tracking Incorrect Answers: System records questions answered incorrectly. After completing a session, users can opt to retry only incorrect questions. Repeat until all questions are answered correctly. Progress Tracking: Display progress indicators (e.g., number of questions completed, success rate). Optionally, provide a summary at the end of each practice session. User Interface and Experience: Intuitive and User-Friendly Design: Clean, modern UI that is easy to navigate. Mobile-first design approach for compatibility with all devices. Enhancements: Progress bars, timers (optional), and visual aids to enhance engagement. Accessibility considerations (e.g., ARIA labels, keyboard navigation). Scalability and Flexibility: Generalized System: Designed to accommodate multiple topics and large question banks. Flexible data models to allow future expansion (e.g., different question types). Performance Optimization: Efficient loading and rendering of questions. Caching strategies for improved performance. Security: Protect against common web vulnerabilities (XSS, CSRF, SQL Injection). Secure handling of user data and personal information. Compliance with data protection regulations (as applicable). Deployment and Maintenance: Assistance with deploying the application to a hosting platform (e.g., Vercel, AWS). Provide documentation for: Setting up the development environment. Deploying and configuring the application. Admin operations (uploading questions, managing users). Codebase should be well-documented and maintainable. Optional Enhancements (Nice-to-Haves): Analytics Dashboard: For the admin to view overall usage statistics and insights. Search and Filter Functionality: Allow users to search for specific topics or questions. Localization: Support for multiple languages. Testing Suite: Unit and integration tests to ensure code reliability. Skills Required: [login to view URL] and React proficiency. Experience in building SaaS applications. Strong front-end development skills (HTML5, CSS3, JavaScript/TypeScript). Knowledge of secure authentication practices. Familiarity with databases (SQL or NoSQL) and data modeling. UI/UX design principles. Experience with responsive and mobile-first design. Good communication skills and ability to provide clear documentation. Deliverables: A fully functional [login to view URL] web application that meets all the specified requirements. Source code, with clear documentation and comments. Deployment of the application to the agreed-upon hosting platform. Admin guide detailing: How to upload and manage question sets. How to manage user accounts and view progress (if implemented). User guide or help documentation (optional but appreciated). Testing reports (if testing is included). Project Timeline: Please provide an estimated timeline for: Initial development. Testing and revisions. Final deployment. Budget: The budget is negotiable based on proposals and estimated timelines. Please provide a detailed cost estimate with your application. How to Apply: Share examples of similar projects you have completed. Briefly outline your approach to this project. Include your estimated timeline and total cost. Feel free to ask any questions for clarification.