Crowdfunding Platform (Full-Stack)

Role: Full-Stack Engineer

Tech Stack: Go · Gin · GORM · PostgreSQL · Next.js · TypeScript · Tailwind · Zod · Cloudflare R2 · Midtrans · Swagger · Docker

A complete crowdfunding platform built in two parts: a Go REST API and a Next.js web client. Users register, browse and create campaigns, and donate through a payment gateway.

Repositories

• Web — Next.js
• API — Go · PostgreSQL

Backend (Go)

• Organised by domain — each owns its entity, repository, and service — with handlers depending only on interfaces, so the logic is unit tested with mocks and no database.
• UUID identifiers across the API, so resource IDs can’t be guessed or enumerated.
• Compile-time dependency injection with google/wire — no runtime reflection.
• Atomic payments — transaction status and campaign totals update inside one database transaction.
• Cloudflare R2 (S3-compatible) file uploads, with a local-disk fallback for development.
• Operability: graceful shutdown, request-id tracing, structured logs, and database connection retry on startup.
• Swagger docs for every endpoint, unit and handler tests, and a GitHub Actions pipeline. Ships with a Dockerfile and Compose stack.

Frontend (Next.js)

• Backend-for-frontend: data is fetched in Server Components and mutations run through Server Actions — the API token never reaches client-side JavaScript.
• Sessions in an httpOnly cookie, set server-side at login and register.
• Zod validates both form input and every API response, with types inferred from the schemas.
• Responsive UI built from small, reusable components.