Hi, I'm Rahul Kumar
Full-stack engineer with strong DSA foundations, building scalable APIs, real-time WebSocket architectures, and production-ready web applications.
Download RésuméI’m Rahul
Core Expertise
- Full-Stack Engineering
- Backend Architecture
- Data Structures & Algorithms
- Real-Time Systems
- System Design Fundamentals
- API Design & Integration
- Performance & Scalability
Tech Stack
Systems & Architecture
- • Real-time systems using WebSockets
- • Dockerized backend services
- • REST + WebSocket hybrid APIs
- • Database-driven scalable architectures
GitHub · Last 61 Days
View Profile →Projects
Featured ProjectDevSync
DevSync is a real-time collaborative developer platform that enables teams to write code, execute commands, and collaborate live within a shared environment. It features synchronized editors, an integrated terminal for live execution, and WebSocket-driven state sharing to maintain real-time consistency across users. The platform is backed by a scalable Node.js architecture, supports isolated execution using containerized environments, and ensures persistent project state to enable reliable, multi-user collaboration across sessions.
Key Highlights
- Real-time collaboration using WebSockets
- Integrated terminal with live command execution
- Headless terminal & GUI processes using Xvfb (X11)
- Concurrent file editing with conflict handling
- Scalable backend APIs with Node.js
- Dockerized environments for isolated execution & deployment
Tech Stack
Bookwise
BookWise is a full-stack library management system designed with real-world access control and automation. Users can discover, borrow, and return books through a secure, approval-based flow. Admins manage users and inventory with protected routes and fine-grained permissions. Background workflows automate emails, reminders, and overdue handling reliably.
Key Highlights
- User authentication and session management using NextAuth
- Admin-only routes with role-based access control
- Book borrowing and request approval workflow
- Redis-backed rate limiting to prevent abuse
- Email notifications for request status updates
- Background job processing using QStash
Tech Stack
NewTube
NewTube is a full-stack social media platform that blends short-form content, micro-posts, and video sharing into a unified experience. Users can create posts, upload video shorts, interact through likes, dislikes, and comments, and edit their content in real time. The platform is built with a scalable REST-based backend and a responsive frontend, enabling smooth content discovery and user engagement.
Key Highlights
- User-generated posts and video shorts
- Like, dislike, comment, and edit interactions
- Content feed with real-time updates
- Scalable REST APIs using Node.js and Express
- MongoDB data modeling for social interactions
Tech Stack
My Experience
Fullstack Developer Intern
Inboxkit
Building Fullstack Applications,which are scalable and maintainable
- Improved Performance by optimizing database queries and reducing API response times.
- Made Company sub products from scratch alone.
- Working on multiple frameworks and languages simultaneously.
Let’s work together
I’m open to internships, full-time roles, and meaningful freelance work. If you’re hiring or building something interesting, let’s talk.