Shivanjan Singha Roy

I built Dronzer, a multi-user AI document search and question-answering platform using Java, Spring Boot, PostgreSQL, pgvector, Gemini API, Spring Security, and JWT.

I developed PDF and TXT ingestion, text extraction, chunking, indexing, Gemini embeddings, semantic search, multi-tenant document isolation, and grounded RAG responses with source attribution. I also added validation and automated tests for retrieval, authentication-aware access, and fallback responses.

At NVIDIA via Spectrum Consultants India Pvt. Ltd., I performed quality assurance for computer vision and multimodal AI training data, validating annotations, pseudo-labels, bounding boxes, spatial relationships, and contextual events. I’m interested in building production-ready AI applications and intelligent backend systems.