DevApply is a production-style AI SaaS platform designed to help developers optimize resumes, generate job-specific applications, and evaluate job fit using AI-driven workflows.
The platform combines modern backend architecture, usage-based monetization logic, secure authentication, and AI integrations to simulate a real-world startup product.
DevApply enables developers to:
✅ Analyze resumes for strengths, gaps, and ATS improvements
✅ Generate job-specific cover letters
✅ Convert projects into resume-ready bullet points
✅ Evaluate profile-to-JD compatibility
✅ Track AI usage via a credit-based SaaS system
-
Resume Analyzer
Upload PDF resumes and receive structured feedback, improvement hints, and ATS insights. -
Cover Letter Generator
Generate job-specific cover letters based on JD input. -
Project Bullet Generator
Convert GitHub/project descriptions into professional resume bullets. -
Job Fit Analyzer
Evaluate how well a profile matches a job description.
- ✅ Usage-based AI credit system
- ✅ Middleware-driven credit enforcement
- ✅ Role-Based Access Control (USER / ADMIN)
- ✅ Plan-based feature gating
- ✅ Usage analytics dashboard
- ✅ Secure authentication with Clerk
- ✅ Scalable REST API architecture
DevApply follows a modern SaaS-style full-stack architecture:
Frontend → React + Tailwind
Backend → Node.js + Express
Database → PostgreSQL (Neon)
Authentication → Clerk
File Handling → Multer + Cloudinary
AI Layer → OpenAI APIs
Frontend
- React (Vite)
- Tailwind CSS
Backend
- Node.js
- Express.js
Database
- PostgreSQL (Neon)
Authentication
- Clerk
Cloud / Storage
- Cloudinary
- Multer
AI Integration
- OpenAI APIs
client/
├── public/
├── src/
│ ├── assets/
│ ├── components/
│ ├── pages/
│ │ ├── Community.jsx
│ │ ├── CoverLetterGenerator.jsx
│ │ ├── Dashboard.jsx
│ │ ├── Home.jsx
│ │ ├── JobFitAnalyzer.jsx
│ │ ├── Layout.jsx
│ │ ├── Pricing.jsx
│ │ ├── ProjectBulletGenerator.jsx
│ │ ├── ResumeAnalyzer.jsx
│ │ ├── Usage.jsx
│ ├── App.jsx
│ ├── main.jsx
│ ├── index.css
├── package.json
├── vite.config.js
```
---
### ⚙️ Server (Backend)
```
server/
├── configs/
│ ├── multer.js
│ ├── plans.js
│
├── controllers/
│ ├── activity.controller.js
│ ├── analytics.controller.js
│ ├── coverLetter.controller.js
│ ├── jobFit.controller.js
│ ├── projectBullets.controller.js
│ ├── resume.controller.js
│ ├── subscription.controller.js
│ ├── user.controller.js
│
├── db/
│ ├── index.js
│
├── middlewares/
│ ├── auth.middleware.js
│ ├── credits.middleware.js
│
├── routes/
│ ├── activity.routes.js
│ ├── analytics.routes.js
│ ├── coverLetter.routes.js
│ ├── jobFit.routes.js
│ ├── projectBullets.routes.js
│ ├── resume.routes.js
│ ├── subscription.routes.js
│ ├── user.routes.js
│
├── services/
│ ├── ai.service.js
│
├── utils/
│ ├── activityLogger.js
│ ├── creditRefresher.js
│ ├── credits.js
│ ├── pdfParser.js
│ ├── subscriptionGuard.js
│
├── server.js
├── package.json
├── .env
```
---
## 🧠 Credit System
DevApply implements a usage-based SaaS credit model.
✔ Middleware validates credits before AI execution
✔ Credits deducted after successful responses
✔ Usage logged in PostgreSQL
Example Logic:
```
if (credits_remaining < featureCost) {
throw Error("Insufficient Credits");
}
- POST /ai/resume/analyze
- POST /ai/cover-letter/generate
- POST /ai/project/describe
- POST /ai/job-fit/analyze
- GET /usage/summary
- GET /analytics/dashboard
✅ Secure authentication via Clerk
✅ Role-based access control
✅ Middleware-protected routes
✅ Credit enforcement layer
✅ Environment-based configuration
| Feature | Preview |
|---|---|
| Landing Page |  |
| Dashboard |  |
| Resume Analyzer |  |
| Cover Letter Generator |  |
| Usage Analytics |  |
git clone https://github.com/AdityaBhosale22/devapply.git
cd devapplycd client && npm install
cd ../server && npm install# Client
npm run dev
# Server
npm start- Payment Gateway Integration
- Advanced analytics
- Resume version tracking
- AI prompt optimization
- Multi-tenant SaaS support
Aditya Bhosale
GitHub: https://github.com/AdityaBhosale22
⭐ If you found this project interesting, consider starring the repo!