Shivam Kumar

I’m a Software Developer focused on shipping end-to-end features for production web applications—especially where real-time communication, secure APIs, and intelligent retrieval matter. In my current role, I built a PDF processing service (split/merge/page extraction with validation and secure cloud upload), implemented live messaging with Socket.io room-based architecture, and designed/optimized 15+ RESTful Node.js/Express.js endpoints with JWT auth and input validation.

I build AI experiences with practical retrieval and fast UX. In BrainPath AI, I created a RAG pipeline over user-uploaded PDFs with chunking, embeddings, cosine similarity retrieval, and grounded answers with page-level citations. I also implemented streaming LLM responses (Groq Llama-3.3-70B) using Server-Sent Events with fetch + ReadableStream (bypassing EventSource header limits) and shipped 7 AI features alongside a full LMS with role-based auth.

I care about correctness under concurrency and clean system design. Projects like SkyReserve and ChatApp strengthened my grounding in relational modeling (Sequelize, seat-booking validation to prevent double-booking), JWT/role-based access control, and event-driven real-time messaging with presence tracking and persistence. I’m also strong in Data Structures, Algorithms, and System Design, with a LeetCode rating of 1600+.