Open to opportunities

Tan Nguyen

@tannguyen4

Message

AI Agent Engineer building reliable RAG and evaluation systems to ship production-ready agentic AI.

Vietnam

Message

What I'm looking for

I’m looking for a role where I can design, evaluate, and harden agentic LLM systems—RAG, tool-calling, and guardrails—with real production constraints, strong experimentation, and clear reliability metrics.

I’m an AI Agent Engineer and Computer Science graduate focused on turning LLM ideas into dependable products. I build agentic systems with Retrieval-Augmented Generation (RAG), tool calling workflows, and rigorous AI agent evaluation using LLM-as-a-judge approaches—always with guardrails, observability, and quality metrics in mind.

In my current work, I design evaluation workflows for tool-calling and skill-based agents, analyze execution traces, and improve response latency through prompt, routing, and tool-call optimizations. I also develop production-oriented AI apps like a FastAPI/NextJS communication platform with a RAG-first pipeline and evaluation monitoring (LangFuse, RAGAS), and a Vietnamese–English policy Q&A RAG chatbot with source-grounded answers, routing for cost/latency, and domain-specific safety guardrails.

Experience

Work history, roles, and key accomplishments

Current

AI Agent Evaluation Engineer

Current

VinSmart Future

Apr 2026 - Present (2 months)

Designed evaluation workflows for tool-calling and skill-based AI agents to measure task completion, tool selection accuracy, response quality, and latency. Implemented LLM-as-a-judge methods, analyzed execution traces, and improved reliability by optimizing prompts, routing, and tool-call execution while investigating agent failure cases.

Tool Calling AI Agent Evaluation LLM As A Judge Instruction Following Evaluation Reasoning Consistency Checks Agent Routing Optimization Tool calling

Education

Degrees, certifications, and relevant coursework

VinUniversity

Applied AI Talent Program, Applied AI

2026 -

Activities and societies: Program emphasis includes RAG systems, AI agents, multi-agent concepts, LLM applications, and real-world AI solutions.

Enrolled in the Applied AI Talent Program at VinUniversity starting April 2026, focused on practical AI development such as RAG systems and AI agents.