Sachin Gupta is an independent researcher and software engineer with more than a decade of experience building distributed systems, microservices, and payments and fintech infrastructure, with a strong grounding in observability, databases, and scalable service architecture.

Since 2023 his focus has shifted to the systems behind modern AI: retrieval-augmented generation and vector search; LLM agents, reasoning, and planning; tool protocols and orchestration, including MCP; trustworthy AI and model evaluation (benchmark design, hallucination detection, guardrails); and multimodal generation.

He publishes long-form technical explainers that open up how these systems work, pairing everyday analogies with interactive visualizations, at guptasachinn.com and through his newsletter, AI Under the Hood, and regularly judges AI hackathons across applied machine learning and systems engineering.