Tuner API

Problem

Garages often rely on paper or WhatsApp to manage jobs, making it difficult to track progress, assign mechanics, and update customers.

Solution

Designed and built a scalable API-first backend enabling job management, mechanic assignments, and automated customer notifications.

Highlights

• Modular REST API architecture
• Role-based mechanic and admin access
• Automated email updates for customers

Architecture

• Express REST API
• MongoDB database with indexed collections
• Authentication via JWT
• Validation layer using Zod and express-validator

Key decisions

• Used Zod for runtime validation instead of heavier frameworks
• Designed API-first architecture before UI implementation
• Focused on modular service layer for maintainability

What I learned

Building scalable API architectures, validation pipelines, authentication systems, and maintainable TypeScript backend design.