Vantio API - REST Backend
REST API powering Vantio: manages questions, mock exams, progress metrics, and authentication.
Backend Developer
Jan 2026 - Present
Overview
Vantio backend exposed as a REST API with interactive documentation generated by Scalar. Handles the complete platform domain: question bank, mock exams, study sessions, progress, and authentication.
Problem
Needed a solid, versioned, and documented backend that could scale as the legal platform grows in content and users, without sacrificing Developer Experience.
Solution
Built a REST API with NestJS following modular architecture, with end-to-end TypeScript, auto-generated OpenAPI, health checks, semantic versioning, and a /api/version endpoint for deployment traceability.
Key features
- Interactive documentation with Scalar UI
- Versioned endpoints with semantic versioning
- Health check and /api/version endpoint for deployments
- Modular architecture by domain (questions, mock exams, users)
- JWT authentication with NestJS guards
- PostgreSQL + Prisma/TypeORM as persistence layer
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