Subhadeep Das
About
Who I Am
I am a results-driven Software Engineer specializing in Frontend development with React.js and Next.js. With a strong foundation in building scalable, high-performance web applications, I focus on delivering seamless user experiences through clean architecture and modern engineering practices.
What I Specialize In
I specialize in architecting modern frontend systems, from real-time communication platforms to complex enterprise dashboards, ensuring high performance, accessibility, and scalability.
- Core Technologies: React.js, Next.js (App Router), TypeScript, JavaScript (ES6+)
- Real-time & Communication: WebSockets (Socket.IO), WebRTC (Audio/Video Calling), Push Notifications (FCM)
- State & Data Management: Redux Toolkit, RTK Query, Zustand, TanStack Query, GraphQL
- Performance & Optimization: Core Web Vitals, SSR/SSG/ISR, Service Workers, Web Workers, Code Splitting
Stack
Experience
WebArt Technology
Software Engineer
- Architected and scaled Next.js applications (App Router, SSR, SSG), improving SEO rankings and reducing LCP and TTI metrics.
- Designed and implemented a real-time chat platform using WebSockets and Socket.IO, enabling instant messaging and live presence.
- Integrated audio and video calling using WebRTC, handling signaling, peer connection lifecycle, and connection recovery.
- Implemented Service Workers for offline caching, background sync, and improved repeat-visit performance.
- Leveraged Web Workers to offload CPU-intensive operations, preventing main-thread blocking and UI jank.
- Built push notification workflows using Firebase Cloud Messaging (FCM) for real-time user alerts.
- Enhanced UI interactions with GSAP and Framer Motion, balancing animations with strict performance budgets.
- Optimized frontend performance through code splitting, lazy loading, memoization, and intelligent caching.
- Established testing standards using Jest and React Testing Library.
- Conducted code reviews focusing on performance, accessibility, and long-term maintainability.
Brainium Information Technologies Pvt. Ltd.
Software Engineer
Software Developer Intern
Featured Projects
RailTel Vendor Platform
Enterprise DashboardAn enterprise-grade dashboard for the Government PSU RailTel. Architected to handle massive datasets, visualizing over 100,000 purchase orders through dynamic, high-performance charts.
Education
Barrackpore Rastraguru Surendranath College
- Achieved a cumulative grade point average of 8.73 CGPA.
- Conducted research on 'Informal System Design and Synthesis in the Limelight of Asymmetric Type Functions' in collaboration with the Department of Computer Science.
- Presented research findings at a college conference in front of external evaluators from Kalyani Mahavidyalaya.
- Mastered advanced theoretical concepts and practical applications in modern computer science with a focus on system design.
University of Calcutta
Shyamnagar Kanti Chandra High School
Barrackpore Ramakrishna Vivekananda Mission
UI Playground
<button
style={{
borderRadius: '16px',
backgroundColor: '#10b981'
}}
className="shadow-lg..."
>
Hover Me!
</button>Certifications
Honors & Rewards
Developer of the Quarter – Certificate of Recognition
Webart • JUL-SEP 2025
Awarded ‘Developer of the Quarter’ for exceptional performance and contribution to key projects.
Bookmarks
Design Inspirations
A curated collection of pixel-perfect UI designs, landing pages, and component libraries that I reference for every project.
Frontend Repositories
Star-marked repositories featuring advanced React patterns, Next.js 15 templates, and utility libraries I use in production.
Technical Articles
Deep dives into JavaScript internals, performance optimization, and architectural patterns from top engineering blogs.
"A man who is master of patience is master of everything else."
— George Savile