Xin chào, I'm Phạm Văn Ngoan _{(Pham Van Ngoan · Ngoan Pham)}

AI builder — I build AI systems that listen, reason and hold up in production.

• Start from the pain, not the stack. A real problem first; the model comes after.
• One mind becomes many. An orchestrator that routes to focused sub-agents, each with its own tools — grounded in retrieval that cites its sources.
• Lighter and faster. Latency is a feature: caching, routing, quantization, until the conversation feels natural.
• Measure honestly. Nothing ships without passing an eval gate — accuracy, faithfulness, latency, safety.
• Then let it reach everyone. Company-wide, and in regulated places like banking and healthcare, with a human in the loop.

• Simulated crowds — multi-agent personas built from real people's answers, so a team can try an ad, a price or a policy on a crowd before it reaches real users.
• How reactions spread — agents with friend networks who only pass something on when they're genuinely convinced, to surface second-order effects.
• Evals that can say "not sure" — gates that check agreement with real people (holdout questions, rank correlation, backtests), stability across reruns and bias, and abstain when the evidence isn't there.
• Benchmarking agents — measuring how reliable, consistent and well-calibrated LLM agents really are, beyond the demo.
• Memory for agents and robots — what to keep, what to let go, and how to recall the right thing at the right moment, across sessions and in the physical world.
• Models on device — small, quantized and distilled models that run privately and offline on phones and edge hardware.

_{Designed, built and shipped end to end, some of them AI-powered.}

Open each app

	App	What it does	Runs on
	Mochi — Desk Companion	A tiny pixel pet that notices when your day gets heavy	Mac
	Mochiba	The clock-in app that feels like a friend	iPhone · iPad
	HyperLens · Perp PnL Tracker	Hyperliquid positions, PnL and alerts in real time	iPhone · iPad
	Narabi: Learn Japanese Words	Discover hidden connections between Japanese words	iPhone · iPad
	MojiZen: Emoji Connections	A calm puzzle game about linking emojis	iPhone · iPad
	Dhammapada · Kinh Pháp Cú	All 423 verses in a calm, practical app	iPhone · iPad · Watch
	Shiba Island: Habit Tracker	Build healthy habits with a Shiba companion	iPhone · iPad
	Lô Tô AI - Số Zì Đây?	Vietnamese Lô Tô with a smart AI caller	iPhone · iPad
	AI Đu Đỉnh	Stock portfolio tracker with a funny AI coach	iPhone · iPad

_{Python · PyTorch · LangGraph · vLLM · TensorRT · Langfuse · DeepEval · Neo4j · Qdrant · Kubernetes · TypeScript · Swift}