🚀 LinkUps

A production-ready AI-powered professional networking platform that combines intelligent career assistance, ATS resume analysis, smart resume building, real-time messaging, WebRTC video meetings, and secure OAuth authentication into one modern full-stack application.

🌐 Live Demo

Service	URL
🌍 Live Website	https://linkups.utkalbehera.com
⚙ Backend API	https://api.linkups.utkalbehera.com
📘 Swagger Docs	https://api.linkups.utkalbehera.com/api-docs

⭐ Why LinkUps?

Unlike traditional professional networking platforms, LinkUps combines AI-powered career development with modern social networking.

✔ AI Resume Builder

✔ Resume-to-JD Tailoring

✔ ATS Match Score

✔ AI Mock Interviews

✔ Photorealistic AI Interviewer

✔ WebRTC Video Meetings

✔ Real-time Messaging

✔ Professional Networking

✔ Google & GitHub OAuth

✔ JWT Authentication

✔ Cloudinary Media Management

✔ Swagger API Documentation

✔ Fully Responsive Design

✔ Production Deployment

📚 Table of Contents

🚀 Live Demo
⭐ Why LinkUps?
📖 Project Overview
✨ Feature Matrix
🧠 AI Career Suite
📄 Smart Resume Builder
💬 Real-time Messaging
📹 LinkUps Meet
👥 Professional Networking
🔐 Authentication & Security
🏗 System Architecture
🚀 Tech Stack
📊 Project Statistics
⚙ Installation
📖 API Documentation
📂 Folder Structure
📸 Screenshots
🗺 Roadmap
🤝 Contributing
📄 License

📖 Project Overview

LinkUps is a modern AI-powered professional networking platform designed to bridge the gap between traditional social networking and career development.

Unlike conventional networking applications, LinkUps integrates Google Gemini AI, real-time communication, resume engineering, and AI-assisted interview preparation into one unified platform.

Whether users want to build professional connections, optimize resumes, prepare for interviews, or collaborate through secure video meetings, LinkUps provides an intelligent ecosystem that enhances every stage of their career journey.

The platform follows a production-ready MERN architecture with Next.js, Express.js, MongoDB, Socket.IO, WebRTC, and Google Gemini, ensuring scalability, responsiveness, and maintainability.

✨ Feature Matrix

Category	Features
🤖 AI	Resume Tailoring, ATS Analysis, Mock Interviews, AI Interviewer, Resume Parsing
📄 Resume Builder	Multiple Templates, AI Enhancement, Dynamic Sections, PDF Export
💬 Communication	Real-time Messaging, Read Receipts, Typing Indicators, Notifications
📹 Meetings	Secure WebRTC Calls, Meeting Rooms, In-chat Calling
👥 Networking	Posts, Comments, Reactions, Connections, Professional Profiles
🔐 Authentication	JWT, Google OAuth, GitHub OAuth, Secure Sessions
☁ Cloud Services	Cloudinary, MongoDB Atlas
📚 Developer Tools	Swagger API Docs, REST APIs, Modular Architecture

🎯 Core Capabilities

🤖 Artificial Intelligence

Google Gemini Integration
Resume Optimization
ATS Compatibility Analysis
AI Mock Interviews
Resume Parsing
Smart Career Guidance

💼 Career Development

Resume Builder
Professional Profiles
Resume Tailoring
PDF Resume Generation
ATS Score Analysis

🌐 Professional Networking

Connection Requests
Social Feed
Post Reactions
Professional Profiles
Comments & Engagement

💬 Real-time Communication

Socket.IO Messaging
Typing Indicators
Read Receipts
Online Status
Notifications

📹 Video Collaboration

WebRTC Video Meetings
In-chat Calling
Camera Controls
Microphone Controls
Secure Meeting Rooms

☁ Cloud Infrastructure

MongoDB Atlas
Cloudinary
Render
Vercel
Google OAuth
GitHub OAuth

🧠 AI Career Suite

At the heart of LinkUps is an intelligent career assistant powered by Google Gemini, designed to help users prepare for interviews, optimize resumes, and improve job application success rates.

🚀 AI Resume-to-JD Tailoring

Automatically analyzes a target Job Description (JD) and intelligently rewrites the resume to maximize relevance.

Capabilities

ATS-friendly resume optimization
Keyword matching
Experience prioritization
Project enhancement
Professional summary rewriting
Skill gap identification

📊 ATS Match Score Analyzer

Evaluate how well a resume aligns with a target job description.

The AI provides:

ATS Compatibility Score (0–100)
Matching Skills
Missing Keywords
Resume Weaknesses
Improvement Suggestions
Hiring Probability Insights

🎤 AI Mock Interview

Generate personalized interview sessions tailored to:

Resume
Target Role
Job Description
Experience Level

Interview Categories

Technical
Behavioral
Situational
HR Round

Each question includes:

Difficulty Level
Suggested Hints
Expected Answer Direction

🤖 Photorealistic AI Interviewer

A next-generation virtual interviewer built using Google Gemini, D-ID, and ElevenLabs.

Features

Real-time AI conversations
Human-like avatar
Lip-synced responses
Voice interaction
Dynamic follow-up questions
Interview performance evaluation

📄 Resume Parsing

Upload an existing resume in PDF format and let AI automatically extract:

Personal Details
Skills
Experience
Education
Projects
Certifications

The extracted information is instantly converted into editable resume sections.

✨ AI Content Enhancement

Improve resume quality with a single click.

Supports enhancement for:

Professional Summary
Job Experience
Project Descriptions
Skills
Achievements

📄 Smart Resume Builder

A complete resume engineering platform designed for modern hiring standards.

Resume Templates

Choose between multiple professional templates:

General Resume
Specialized Resume

Dynamic Sections

Customize:

Section Order
Visibility
Layout

Supported Sections

Summary
Education
Experience
Projects
Skills
Achievements
Certifications
Languages

Auto Profile Import

Generate resumes instantly by importing:

User Profile
Projects
Experience
Education
Certifications

No duplicate data entry required.

Resume Export

Export resumes as professionally formatted PDF documents ready for job applications.

Cloud Integration

Profile pictures and media assets are securely stored using Cloudinary.

💬 Real-time Messaging

LinkUps provides enterprise-grade messaging powered by Socket.IO.

Features

Instant Messaging
Typing Indicators
Online Status
Last Seen
Read Receipts
Message Editing
Message Deletion
Notifications

Rich Messaging Experience

Supports

Emoji Messages
Image Sharing
Conversation History
Responsive Chat Interface

📹 LinkUps Meet

Secure one-to-one video conferencing built using WebRTC.

Features

HD Video Calls
Secure Peer-to-Peer Connection
Camera Controls
Microphone Controls
Call Notifications
Missed Call History

Users can initiate meetings directly from the chat window without leaving the application.

👥 Professional Networking

LinkUps combines AI with professional networking to create meaningful career connections.

Social Features

Connection Requests
Professional Profiles
Personalized Feed
Like & React
Comments
Profile Discovery

Feed Engagement

Users can interact using multiple reactions:

👍 Like
❤️ Love
🎉 Celebrate
🤝 Support
💡 Insightful
😂 Funny

🔐 Authentication & Security

Security is implemented using modern authentication standards.

Authentication

JWT Authentication
Google OAuth
GitHub OAuth
Passport.js

Security Features

Protected Routes
Session Management
Password Hashing
Secure Cookies
Environment Variables
Role-based Authorization

☁ Cloud & Deployment

The application is fully deployed using modern cloud infrastructure.

Service	Technology
Frontend	Vercel
Backend	Render
Database	MongoDB Atlas
Media Storage	Cloudinary
AI Engine	Google Gemini
Avatar Streaming	D-ID
Voice AI	ElevenLabs
Authentication	Google OAuth + GitHub OAuth

🏗 System Architecture

LinkUps follows a scalable client-server architecture with dedicated services for authentication, AI processing, media management, and real-time communication.

                                ┌──────────────────────────┐
                                │        Frontend          │
                                │     Next.js + React      │
                                └─────────────┬────────────┘
                                              │
                                     REST APIs │ Socket.IO
                                              │
                    ┌─────────────────────────▼─────────────────────────┐
                    │              Express.js Backend                   │
                    └──────────────┬──────────────┬─────────────────────┘
                                   │              │
                      ┌────────────▼───────┐      │
                      │    MongoDB Atlas    │      │
                      └─────────────────────┘      │
                                                   │
                      ┌────────────────────────────▼───────────────────┐
                      │                Cloudinary                      │
                      │        Images • Resumes • Media               │
                      └────────────────────────────────────────────────┘

                      ┌────────────────────────────▼───────────────────┐
                      │              Google Gemini API                 │
                      │ Resume AI • ATS • Mock Interview • AI Career   │
                      └────────────────────────────────────────────────┘

                      ┌────────────────────────────▼───────────────────┐
                      │      D-ID + ElevenLabs + WebRTC + Socket.IO    │
                      │ AI Interviewer • Video Calls • Real-time Chat  │
                      └────────────────────────────────────────────────┘

🚀 Technology Stack

Frontend

Category	Technologies
Framework	Next.js 16, React 19
Styling	Tailwind CSS, CSS Modules
State Management	Redux Toolkit
Routing	Next.js App Router
Icons	Lucide React
HTTP Client	Axios
PDF Processing	react-pdftotext
Real-time	Socket.IO Client

Backend

Category	Technologies
Runtime	Node.js
Framework	Express.js
Database	MongoDB Atlas
ODM	Mongoose
Authentication	JWT, Passport.js
File Upload	Multer
Cloud Storage	Cloudinary
API Docs	Swagger UI
Session	Express Session

AI & External Services

Service	Purpose
Google Gemini	AI Career Assistant
D-ID	Photorealistic AI Avatar
ElevenLabs	AI Voice Generation
Cloudinary	Image & Resume Storage
Google OAuth	Social Login
GitHub OAuth	Developer Authentication

Deployment

Service	Platform
Frontend	Vercel
Backend	Render
Database	MongoDB Atlas
Domain	Hostinger
SSL	Automatic HTTPS

📊 Project Statistics

Metric	Value
Frontend Framework	Next.js 16
Backend Framework	Express.js
Database	MongoDB Atlas
Authentication Methods	3
AI Integrations	3
OAuth Providers	2
Cloud Providers	2
Real-time Engine	Socket.IO
Video Technology	WebRTC
API Documentation	Swagger
Deployment Platforms	Vercel + Render

⚡ Performance Optimizations

The application is optimized for responsiveness and scalability through modern engineering practices.

Frontend

Component-based architecture
Lazy loading
Optimized rendering
Efficient Redux state management
Responsive layouts
Dynamic routing

Backend

Modular Express architecture
RESTful API design
Environment-based configuration
Secure authentication middleware
Optimized MongoDB queries
Cloud-based media handling

AI Optimizations

Context-aware prompt engineering
Optimized Gemini requests
Efficient PDF parsing
Dynamic response generation
ATS keyword extraction

🔒 Security Features

Security has been implemented using industry-standard practices.

Authentication

JWT Authentication
Google OAuth
GitHub OAuth
Passport.js Strategies

Authorization

Protected Routes
Secure Sessions
Role-based Access
Token Validation

Data Protection

Password Hashing
Environment Variables
Secure Cookies
API Validation
Cloud Storage Isolation

📂 Folder Structure

LinkUps
│
├── frontend
│   ├── public
│   ├── src
│   │   ├── Components
│   │   ├── Pages
│   │   ├── Context
│   │   ├── Layout
│   │   ├── Redux
│   │   ├── Hooks
│   │   ├── Utils
│   │   └── Styles
│   │
│   ├── package.json
│   └── next.config.js
│
├── backend
│   ├── config
│   ├── controllers
│   ├── middleware
│   ├── models
│   ├── routes
│   ├── services
│   ├── templates
│   ├── uploads
│   ├── utils
│   └── server.js
│
├── README.md
└── LICENSE

🧠 Engineering Highlights

This project demonstrates practical implementation of:

Production-ready MERN architecture
AI integration using Google Gemini
OAuth authentication using Passport.js
Real-time communication using Socket.IO
Peer-to-peer video calling using WebRTC
Cloud media management using Cloudinary
Resume engineering workflows
RESTful API design
Scalable folder architecture
Secure deployment using Vercel & Render
Environment-based configuration
Modular backend development

⚙️ Local Installation & Setup

📋 Prerequisites

Before running the project locally, ensure you have the following installed:

Node.js (v18 or later)
npm or Yarn
MongoDB Atlas (or Local MongoDB)
Git

Additionally, create accounts for:

Google Gemini API
Cloudinary
Google OAuth
GitHub OAuth
D-ID
ElevenLabs

📥 Clone Repository

git clone https://github.com/Utkal9/linkups.git

cd linkups

📦 Backend Setup

Navigate to the backend directory

cd backend

Install dependencies

npm install

Create

.env

PORT=9090

MONGO_URL=

SESSION_SECRET=

BACKEND_URL=http://localhost:9090

FRONTEND_URL=http://localhost:3000

GOOGLE_CLIENT_ID=
GOOGLE_CLIENT_SECRET=

GITHUB_CLIENT_ID=
GITHUB_CLIENT_SECRET=

GEMINI_API_KEY=

DID_API_KEY=
DID_PRESENTER_URL=

ELEVENLABS_API_KEY=
ELEVENLABS_VOICE_ID=

CLOUDINARY_CLOUD_NAME=
CLOUDINARY_API_KEY=
CLOUDINARY_API_SECRET=

Run

npm run dev

Backend

http://localhost:9090

💻 Frontend Setup

Navigate to frontend

cd frontend

Install dependencies

npm install

Create

.env.local

NEXT_PUBLIC_API_URL=http://localhost:9090

Run

npm run dev

Frontend

http://localhost:3000

📖 API Documentation

Swagger documentation is automatically generated.

Development

http://localhost:9090/api-docs

Production

https://api.linkups.utkalbehera.com/api-docs

🌍 Production Deployment

Service	Platform
Frontend	Vercel
Backend	Render
Database	MongoDB Atlas
Domain	Hostinger
SSL	HTTPS
Image Storage	Cloudinary

📸 Application Preview

Replace the placeholders below with screenshots from the application.

Feature	Preview
Home Page	assets/home.png
Feed	assets/feed.png
User Profile	assets/profile.png
Resume Builder	assets/resume-builder.png
ATS Analyzer	assets/ats.png
AI Interview	assets/ai-interviewer.png
Chat	assets/chat.png
Video Meeting	assets/video-call.png
Dashboard	assets/dashboard.png

🛣 Roadmap

Completed

AI Resume Builder
Resume-to-JD Tailoring
ATS Match Score
AI Mock Interviews
AI Resume Parsing
Professional Networking
WebRTC Meetings
Socket.IO Chat
JWT Authentication
Google OAuth
GitHub OAuth
Cloudinary Integration
Swagger API Documentation

Planned Features

AI Job Recommendation Engine
Company Pages
Recruiter Dashboard
Group Video Meetings
Push Notifications
Mobile Application
Docker Deployment
Kubernetes Support
CI/CD Pipeline
Analytics Dashboard

🤝 Contributing

Contributions are always welcome.

If you would like to improve LinkUps:

Fork the repository
Create your feature branch

git checkout -b feature/amazing-feature

Commit your changes

git commit -m "feat: add amazing feature"

Push to your branch

git push origin feature/amazing-feature

Open a Pull Request

💡 What I Learned

Building LinkUps significantly improved my understanding of:

Large-scale MERN Architecture
AI Integration using Google Gemini
OAuth Authentication
JWT Authentication
Passport.js
Real-time Communication
WebRTC
Socket.IO
Cloudinary Media Management
MongoDB Data Modeling
REST API Design
Swagger Documentation
Production Deployment
Custom Domains
Full-stack System Design

📄 License

Distributed under the MIT License.

See

LICENSE

for more information.

📬 Contact

👨‍💻 Utkal Behera

⭐ Support

If you found this project useful, consider giving it a ⭐ on GitHub.

Your support motivates me to build more production-ready open-source projects.

Made with ❤️ by Utkal Behera

⭐ Star this repository if you found it helpful ⭐

Name		Name	Last commit message	Last commit date
backend		backend
frontend		frontend
.gitignore		.gitignore
README.md		README.md

Latest commit

History

Folders and files

Repository files navigation

🚀 LinkUps

🌐 Live Demo

⭐ Why LinkUps?

📚 Table of Contents

📖 Project Overview

✨ Feature Matrix

🎯 Core Capabilities

🤖 Artificial Intelligence

💼 Career Development

🌐 Professional Networking

💬 Real-time Communication

📹 Video Collaboration

☁ Cloud Infrastructure

🧠 AI Career Suite

🚀 AI Resume-to-JD Tailoring

📊 ATS Match Score Analyzer

🎤 AI Mock Interview

🤖 Photorealistic AI Interviewer

📄 Resume Parsing

✨ AI Content Enhancement

📄 Smart Resume Builder

Resume Templates

Dynamic Sections

Auto Profile Import

Resume Export

Cloud Integration

💬 Real-time Messaging

Features

Rich Messaging Experience

📹 LinkUps Meet

Features

👥 Professional Networking

Social Features

Feed Engagement

🔐 Authentication & Security

Authentication

Security Features

☁ Cloud & Deployment

🏗 System Architecture

🚀 Technology Stack

Frontend

Backend

AI & External Services

Deployment

📊 Project Statistics

⚡ Performance Optimizations

Frontend

Backend

AI Optimizations

🔒 Security Features

Authentication

Authorization

Data Protection

📂 Folder Structure

🧠 Engineering Highlights

⚙️ Local Installation & Setup

📋 Prerequisites

📥 Clone Repository

📦 Backend Setup

💻 Frontend Setup

📖 API Documentation

🌍 Production Deployment

📸 Application Preview

🛣 Roadmap

Completed

Planned Features

🤝 Contributing

💡 What I Learned

📄 License

📬 Contact

👨‍💻 Utkal Behera

Portfolio

Live Project

Backend API

GitHub

LinkedIn