👋 Hi, I'm Gulshan Kumar

Full Stack Developer · MERN Stack · Backend Engineer · DSA in C++

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🧑‍💻 About Me

name:        "Gulshan Kumar"
role:        "Full Stack Developer (MERN)"
college:     "Dr. Ambedkar Institute of Technology for Divyangjan"
location:    "Kanpur, Uttar Pradesh, India"
focus:       "Backend Architecture & Scalable Systems"
dsa_solved:  250+  # and counting 🚀
languages:   ["C++", "JavaScript", "Python"]
learning:    ["DevOps", "Docker", "AWS", "System Design", "Redis"]
platforms:   ["LeetCode", "Codeforces", "GeeksforGeeks", "HackerRank"]
interests:   ["Open Source", "API Design", "Cloud Infra", "DSA"]
fun_fact:    "I enjoy debugging more than writing new features 😄"

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📊 Quick Stats

🧩 DSA Problems	🚀 Projects Built	⚙️ Technologies	💻 Primary Language
200+	4+	10+	C++

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🧠 DSA & Problem Solving

🏆 Total Solved: 200+ Problems

Difficulty	Count	Platform
🟢 Easy	80+	LeetCode · Codeforces · GFG
🟡 Medium	90+	LeetCode · Codeforces · GFG
🔴 Hard	30+	LeetCode · Codeforces

📈 Topic Coverage

Topic	Problems	Key Concepts
📦 Arrays & Strings	75+	Sliding window, two pointers, prefix sum
🔗 Linked Lists	25+	Reversal, merge, detect cycle, fast-slow pointer
📚 Stack & Queue	20+	Monotonic stack, BFS, circular queue
🔄 Recursion & Backtracking	18+	N-Queens, subsets, permutations
🌳 Trees & BST	20+	Inorder, LCA, height, diameter, views
🕸️ Graphs	15+	BFS, DFS, connected components, cycle detection
💡 Dynamic Programming	12+	Knapsack, LCS, coin change, memoization
#️⃣ Hashing	15+	Maps, sets, frequency count, anagram
🔍 Binary Search	10+	Search in rotated array, first/last position

🎯 Practice Platforms & Portfolio Trackers

📌 All coding stats (LeetCode, Codeforces, GeeksforGeeks) combined in one place → View my Codolio Portfolio

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🚀 Featured Projects

💬 Flash Chat – Real-Time Chat Application

Full-featured real-time communication platform with secure authentication

• ⚡ Socket.io for instant bidirectional messaging
• 🔐 JWT-based authentication & session management
• 📡 Live user tracking — online/offline presence
• 🧠 Optimized backend architecture for low-latency communication
• 📱 Fully responsive React frontend

Tech: React Node.js Express MongoDB Socket.io JWT

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🏫 DR AITD Management System – Academic Workflow Platform

Complete academic management system for the institution

• 👨‍🏫 Role-based dashboards for Admin, Faculty & Students
• 🔐 Secure authentication system with access control
• 📊 Efficient database design for academic data
• 🔄 REST API architecture — clean, scalable, documented

Tech: Node.js Express MongoDB JWT React

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🌐 Personal Portfolio – Developer Showcase

Modern, fully responsive developer portfolio

• 🎨 Clean UI/UX with modern design principles
• 📱 Fully responsive across all screen sizes
• ⚡ Performance optimized — fast Lighthouse scores
• 🚀 Deployed on Vercel

Tech: React CSS3 HTML5 JavaScript Vercel

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⚙️ Tech Stack

Frontend

Backend

Languages & Tools

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📊 GitHub Analytics

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📈 Contribution Graph

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🐍 Contribution Snake

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🔨 Currently Building

🔧 Project	📝 Description	🏷️ Status
🐳 Dockerized MERN Apps	Containerizing full stack with Docker Compose	🔄 In Progress
☁️ AWS Deployment Pipelines	EC2, S3, and CI/CD integration	🔄 In Progress
⚙️ Scalable Backend Systems	REST + caching + rate limiting	🔄 In Progress
🧠 DSA Speed Training	Targeting 300+ problems milestone	🔄 Active
📐 System Design Study	HLD/LLD patterns and case studies	📚 Learning
🔴 Redis Integration	Session management & caching layer	📚 Learning

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💼 Open To Opportunities

Role	Stack	Status
💻 Full Stack Intern	MERN · React · Node.js · REST API	✅ Open
⚙️ Backend Developer	Express · MongoDB · System Design	✅ Open
🚀 Software Engineer	Product · Startups · Scale-up	✅ Open
🧠 DSA / CP Roles	C++ · Algorithms · Problem Solving	✅ Open

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🌐 Connect With Me

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⚡ Fun Fact

There's a special satisfaction in tracing a bug through 5 layers of abstraction and finding the one missing semicolon that broke everything. That's the real game.

Consistency beats talent — showing up every day to solve one problem compounds faster than people think. 🚀

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🔥 Consistency + DSA + Projects = Cracked Developer Path

200+ problems solved · Always building · Always improving · Always shipping 🚀