Kaushik Rudra's Work | ContraWork by Kaushik Rudra
Kaushik Rudra

Kaushik Rudra

Full Stack Developer | React, Node.js, Python | Co-Founder

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Jabalpur, India

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Jabalpur, India

Cover image for Basomedia is a high-performance, full-stack
Basomedia is a high-performance, full-stack web application built to deliver a seamless music streaming and personalized library management experience. Designed with modern Spotify/Apple Music aesthetic guidelines, the application features full playback controls, user authentication, and RAM-cached YouTube API integration. Key Technical Highlights & Achievements: • Dynamic Audio Streaming: Integrated YouTube IFrame API into a custom React global player context supporting queue management, seek controls, and instant playback. • Secure Authentication & Per-User Storage: Implemented JWT-based session authorization and Bcrypt password hashing paired with Supabase PostgreSQL row-level relationships for per-user custom playlists and Liked Songs. • Performance & Speed Optimization: Reduced search response time to 0–1ms by implementing an in-memory Map RAM caching system on the Node. js backend. Applied React.lazy code-splitting, Web Vitals asset preloading, and responsive vendor chunking. • Restrictive CORS & Production Architecture: Configured cross-origin security rules on Express.js with custom whitelist origins, modular route segregation, and automated continuous deployment via Render and Netlify.
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Cover image for Built a complete in-house telephony
Built a complete in-house telephony solution for Edwin INC as a full replacement for Teleforce. Developed using Node.js, Express, and Plivo features include a 14-agent simultaneous ring system, Plivo Browser SDK integration, SIP endpoints, Zoho CRM integration, call recording, voicemail, and real-time call routing dashboard. Hosted on Hostinger with Supabase (PostgreSQL) database. This tool eliminated the dependency on third-party calling software and saved significant operational costs for the company.
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Cover image for Designed and developed the official
Designed and developed the official corporate website for Edwin Incorporation, a comprehensive platform providing academic, research, publication, conference, HR, and technology solutions.
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Cover image for Built and deployed a full-stack
Built and deployed a full-stack AI content platform that generates, humanizes, paraphrases, and detects AI-written text using Google's Gemini API. Architected as a Next.js 16 monorepo with a credit-based usage system, Google OAuth authentication (NextAuth), and Stripe-powered subscription billing. Migrated the backend from a standalone Express/Node.js server to Next.js App Router serverless API routes, enabling a fully unified deployment on Vercel. Used Prisma ORM with a pooled PostgreSQL database (Supabase) for serverless-safe data access, and implemented secure JWT-based session handling, credit deduction logic, and Stripe webhook event processing for plan upgrades. Tech stack: Next.js, TypeScript, React, Prisma, PostgreSQL, NextAuth.js, Stripe, Google Gemini API, Vercel.
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