Yogesh Kumar
Full-stack engineer: I design how products and systems connect.
Experience
SystemStar InfotechDec 2025 – Present
Software Engineering Intern · 3D & Web · Remote
- Built a 360° video web player in React and Three.js with camera controls and a modular component system.
- Built an FFmpeg pipeline that transcodes raw 4K footage into adaptive HLS streams.
- Cut segment length to 2 s (half the common 4 s default) to lower time-to-first-byte and start playback sooner.
Selected systems
Chatterbox TTS Pipeline Python · PyTorch · CUDA · RunPod · Node.js · MySQL Jul 2026
- Rewrote S3Gen inference as bounded-memory chunked execution: VRAM went from 16 GB (48–80 GB on long inputs) to a stable ~5 GB at any length.
- Patched position overflows and token-boundary bugs, eliminating OOM crashes and voice hallucinations across 2,655+ automated listings.
- Moved deployment from 48 GB accelerators to consumer GPUs (RTX 3070, RunPod), cutting infra cost by 87%.
CoralTeams · LAAF dev infra Next.js · FastAPI · Rust · Ollama · Docker · ngrok May 2026
- Built CoralTeams, a self-hostable Teams interface for Coral with a Docker image, and ran its 4 GB+ AI stack at $0/month across Vercel, GitHub Codespaces, Render and a Colab GPU joined by ngrok tunnels.
AgentSFX · Godot add-on Godot · ElevenLabs · LLM Dec 2025
- Track winner at Calcutta Hacks: a Godot add-on where an LLM reads the game’s code and screenshot, ElevenLabs generates the needed SFX, voices and BGM, and everything is integrated in one click.
Cursor for n8n JavaScript · Chrome extension · Python · RAG · FAISS · SQLite Jul – Sep 2025
- Won 1st prize at Ideatex, GDG-HITK (400+ developers) for a Chrome extension that turns natural language into n8n workflow JSON.
- Grounded generation in n8n docs via Context7, and prototyped RAG over n8n’s node database and workflow templates (FAISS + Gemini).
Open source & leadership
GirlScript Summer of Code ’25 · AlchEmaiLyst Project Admin & community organiserJul – Oct 2025
- Ran code reviews, untangled merge conflicts and onboarded 30+ contributors (42★, 36 forks).
- Took the project from Top 10 to Rank 1 on the Alchemyst AI contributor leaderboard after opening it up via GSSoC.
- Built the Gmail integration with Google OAuth 2.0 and the Alchemyst AI layer with a Gemini fallback; grew a 1,000+ member developer Discord.
Recognition
- Winner, TCS hackathonJul 2026
- Track winner, Calcutta HacksDec 2025
- 1st runner-up ×2, e-Summit ’25, EDC HITKNov 2025
- 1st prize, Ideatex, GDG on Campus HITJul 2025
- Grand Finalist, Smart India HackathonDec 2024
- 3rd of 200, HackHeritageSep 2024
Skills
- Languages
- TypeScript, Python, JavaScript, SQL, C, Java
- Systems
- ssh, ngrok, FFmpeg, HLS streaming, WebSockets, Git, GCP, self-hosting
- Backend & data
- Node.js, Express, MySQL, SQLite, Firebase, BunnyCDN
- Frontend
- React, Next.js, Three.js
- AI & compute
- PyTorch, TensorFlow, CUDA, RunPod, RAG, MCP, LLM agents
Education
Heritage Institute of Technology, Kolkata, B.Tech, Computer Science & Engineering 2024 – 2028