Jahyun Ginny Kim

Jahyun
Ginny Kim

Building AI systems that turn information into decisions.

Founder working on AI tools for everyday life through Giiim and MatterLogic at InfraMatter.

My Interest

Building decision intelligence systems for life and industry

I build AI systems that turn information into decisions.

Through Giiim, I experiment with small AI tools for everyday life, from understanding food ingredients to comparing AI reasoning.

In parallel, I am building MatterLogic at InfraMatter for complex material, energy, and manufacturing decisions.

Across both paths, the focus is the same: designing systems that help people and industries make better decisions.

Currently building in public.

One thesis, two operating tracks.

Consumer tools and industrial systems both connect back to the same question: how does information become a better decision?

BlueStockPrint An investment journaling and decision-reflection platform.
MenuTeller An AI-powered menu understanding app.

More in the making.

MatterLogic AI decision intelligence for industrial materials R&D, guiding the path from material substitution and optimization to next-generation discovery.

Thought leadership around systems and decisions.

Writing is where the operating model becomes explicit: materials, AI, information, and the decisions they shape.

Matter that Matters

Essays and working notes on AI systems, materials, and the architectures behind meaningful decisions.

Substack Essays and working notes on AI and materials.
Core theme Information, systems, and the choices that shape life and industry.

Code With Me

Videos sharing the process of building software, experiments, and AI tools in public.

YouTube Follow along with practical builds and behind-the-scenes development.
Format Hands-on coding sessions and project updates.

For thoughtful collaborations and conversations.

Best reached by email for focused collaboration, and on LinkedIn for public-facing updates.