E-learning · Proctored Exams
Elook
Client projectFullstack Engineer & Release Owner07/2026 — Present
Online learning platform for Vietnamese university students — certification prep and general-education courses, sold through a VietQR + SePay checkout and taught in live cohorts.
What I delivered
- Exams grade against a per-session snapshot with question versioning, so editing a published question can never rewrite a graded attempt
- Enrollment is created inside the payment transaction: access opens ~3s after the bank webhook
- Three repos: NestJS + Prisma on multi-schema PostgreSQL, a Next.js 16 storefront, an Ant Design admin
Stack
- NestJS
- Prisma
- PostgreSQL
- Next.js 16
- Redis
- BullMQ
- Socket.IO