Sumit Kumar

Currently Working.

• Built an LLM waterfall orchestrator for multi-stage content workflows.
• Worked on template and asset management across databases, AWS S3, PSD files, and fonts.
• Developed video-processing infrastructure with yt-dlp, Docker, GCP, and AWS.

A voice-first mock interview platform that changes its questions, difficulty, and topic coverage as the conversation unfolds.

React · Node.js · WebSocket · PostgreSQL · Prisma · LangGraph · Deepgram · Groq

Turns web pages, YouTube videos, PDFs, and raw text into summaries, podcasts, quizzes, notes, diagrams, and deep explanations.

React · Express · PostgreSQL · Prisma · BullMQ · Redis · OpenRouter · Gemini · Supabase

A cross-platform mobile prototype for discovering events and restaurants through city-aware feeds, maps, filters, and local-first interactions.

React Native · Expo · React Navigation · AsyncStorage · Expo Location · React Native Maps

A link-shortening platform with custom aliases, downloadable QR codes, redirect tracking, and visual analytics across traffic, location, device, and referrer.

React · Vite · Express · PostgreSQL · Prisma · Recharts · QRCode · GeoIP

A self-hostable video downloader with a Streamlit interface, FastAPI service, playlist support, live progress, and resilient yt-dlp format fallbacks.

Python · FastAPI · Streamlit · yt-dlp · FFmpeg · Server-Sent Events · Docker · Render

451 merged program PRs across 24 projects. Broader GitHub contributions are tracked separately.