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Manufacturing Planning API

2026 · Capstone project (Backend Developer)

The problem

A capstone project: a tool for planning and tracking manufacturing work job orders, machine scheduling, operation plans with approvals, and PPIC production schedules, meant to be shown as Gantt charts. It needed a backend that could model that whole workflow and serve it to a frontend.

What I built

  • I built the entire backend: a Go API (Gin + GORM) of around 40 endpoints across eight models — users, job orders, machines, operation plans and their approval flow, PPIC schedules, G-code files, and a token blacklist.
  • Auth is JWT with bcrypt, and the token blacklist means logging out actually revokes a token instead of just dropping it on the client.
  • I kept it in clean handler–service–repository layers, with auto-migration and support for both PostgreSQL and MySQL, plus a set of tests.

The stack

  • Gin
  • GORM
  • JWT

The result

  • The frontend didn't get finished, so there's no live app to show this is the backend on its own: the API, the data model, and the auth.
  • It's the most complete backend I've designed end to end, and the first large one I built in Go.

backend