StudyMotion – E-Learning Platform
Full-stack edtech platform featuring course management, adaptive video delivery, student progress tracking, and idempotent payment webhooks.
System Overview
A scalable full-stack learning platform built to handle high-traffic course discovery, secure digital payments, and structured video learning workflows.
Traditional e-learning portals suffer from slow multi-facet catalog queries, vulnerable payment callback hooks prone to double-crediting, and unorganized instructor-student privilege models.
Architected a modular MVC backend with MongoDB compound aggregation pipelines and Redis caching. Engineered idempotent payment webhooks with HMAC signature verification and strict role-based access control.
Key Technical Capabilities
- ✓Optimized MongoDB aggregation pipelines for instant course discovery, multi-filter catalog queries, and student analytics.
- ✓Redis caching layer reducing database read strain on high-demand courses.
- ✓Payment gateway integration with idempotent webhook handlers and signature verification to eliminate double billing.
- ✓Modular MVC architecture with centralized error handling and strict schema-level input validation.
- ✓Role-Based Access Control (RBAC) cleanly isolating student learning dashboards from instructor course management panels.
- ✓Automated video progress tracking marking completed lectures and dynamically updating completion percentages.
Hard Problems Tackled
Designing an idempotent webhook processing pipeline resilient to duplicated network delivery attempts from payment gateways.
Structuring MongoDB indexing across categories, tags, and instructor IDs to maintain sub-150ms search response times.
Achieved 100% payment verification accuracy with zero double credits and sub-180ms median response time across the entire course catalog.
Technology Stack
Architecture & Previews
