Changjian "CJ" He portrait

Changjian "CJ" He

AI Researcher, Applied Mathematician & Founder

ModeResearch
StatusBuilding
SurfaceDeployable AI

Building secure intelligent systems with technical depth, mathematical rigor, and real-world deployment in mind.

First-author machine learning security research with recommendation-system focus.

Original infrastructure thinking for privacy-sensitive and regulation-aware AI deployment.

Pilot-stage product exploration for institution-facing intelligent assistants.

Research-minded.Builder-driven.Deployment-focused.

I work across AI research, mathematical modeling, secure infrastructure, and founder-led product execution.

Powerful systems should also betrustworthy systems.

My work is driven by a simple question: how do we make intelligent systems more capable without making them less deployable, less explainable, or less trustworthy?

Research, ventures,infrastructure, and product execution.

A profile shaped across technical depth, founder execution, and applied AI systems rather than a single narrow lane.

First-author machine learning security research with recommendation-system focus.

Original infrastructure thinking for privacy-sensitive and regulation-aware AI deployment.

Pilot-stage product exploration for institution-facing intelligent assistants.

Open to research, product, andinfrastructure conversations.

I am open to opportunities across applied AI, secure systems, technical strategy, and ambitious product-building.