ResumeLens

ResumeLens is a web app that grades a resume against a job description.

• Backend: Go HTTP API (/api/analyze)
• Frontend: React + Vite
• AI provider: OpenAI (server-side only)

What the project does

1. Accepts a PDF resume upload and job description text.
2. Extracts text from the PDF on the backend.
3. Sends resume text + job description to the LLM.
4. Returns structured JSON with score and feedback.

Tech stack

• Go 1.25.x
• Node 20+
• React 19 + Vite 7
• Docker + Docker Compose (optional)

Prerequisites

• go installed
• node and npm installed
• OPENAI_API_KEY set for real analysis calls

Example:

export OPENAI_API_KEY="your_key_here"

Run locally

1) Start backend API

From repo root:

go run ./cmd/server

Backend listens on http://localhost:3000.

2) Start frontend

In another terminal:

cd web
npm ci
npm run dev

Frontend runs on Vite default port (usually http://localhost:5173).

By default in development, frontend calls backend at http://localhost:3000.

Run with Docker Compose

From repo root:

docker compose up --build

• Frontend is exposed at http://localhost:3005
• Frontend proxies /api traffic to the backend container
• Backend uses values from root .env

API contract

POST /api/analyze with multipart/form-data:

• resume: PDF file
• job_description: plain text

Returns JSON analysis result.

Notes:

• Request size is capped at 10 MB.
• Rate limit is 10 analyze requests per hour per IP.

Tests

Run all default Go tests:

go test ./...

Run tests with race detector:

go test -race ./...

There is an opt-in live OpenAI consistency test. It is skipped by default.

RUN_LIVE_OPENAI_TESTS=1 OPENAI_API_KEY="your_key_here" go test ./internal/services -run TestCallLLM_Live_ScoreConsistencyPlusMinus10 -v

Frontend checks:

cd web
npm run lint
npm run build

Handoff notes

• Verification strategy doc: doc/verification-strategy.md
• Main backend entrypoint: cmd/server/main.go
• API route mount: internal/api/routes.go
• Analyze handler: internal/handlers/analyze.go
• LLM service: internal/services/analyzer.go

If analysis fails in a fresh environment, first check that OPENAI_API_KEY is set in the backend process environment.