Hello, this is Tiffena!
I have spent my career navigating complex systems—technical, cultural, and human.
As a product builder, my core instinct is to look past the surface to uncover hidden needs, reveal overlooked patterns, and design the structures that make clarity possible. When real user needs and systemic patterns come into focus, people understand each other differently—and true alignment becomes possible.
I build AI systems that people actually use and trust: systems that surface the right information at the right moment, respect real-world constraints, and help users make confident decisions without requiring them to become experts.
How I work
- Discovery first — user interviews, data analysis, and quick field experiments to surface hidden needs.
- Prioritize by impact and cost — hypothesis testing and tradeoff frameworks that balance product value and operational constraints.
- Execute fast — serverless prototypes, reproducible playbooks, and measurable experiments that inform roadmap decisions.
This space is where I learn in public - by documenting my discovery while reading, tinkering, and traveling. Here you’ll find notes on Japan, Asian business trends, NLP and AI engineering, DevOps experiments, book reviews, meta‑learning, and the small practices that keep a mind steady and well.
Career & Leadership
Independent Product Builder | Present
- Rapid Prototyping: Architecting serverless data applications and multimodal search tools to validate market needs.
- AI Implementation: Building RAG (Retrieval-Augmented Generation) pipelines and recommendation systems (e.g., Find My Ryokan and Birding Planner) that people can actually rely on in real decisions.
- Full-Stack Execution: Managing end-to-end development, from frontend user experiences to backend infrastructure optimization (PostgreSQL, Docker, Cloudflare Workers, ChromaDB, external API integrations).
Board Member, Local Environmental Non-Profit | Present Leading external communication strategy and community outreach, applying AI & data-driven optimization plus community-centric design to regional environmental stewardship.
Senior Product Manager, Microsoft | 2002 – 2015
- Zero-to-One Launches: Led data-driven feature and content design for enterprise V1 product launches across US and APAC markets.
- Growth & Strategy: Drove global user acquisition, conversion, and retention strategies by uncovering and addressing localized market needs.
- Ecosystem Building: Managed complex V1 product lifecycles and cultivated early-adopter technical communities from the ground up.
Education & Certifications
- BSc. Computer Science | Oklahoma State University
- AI Product Management | Duke University (2024)
- NLP | DeepLearning.AI (2024)
- Recommender Systems | University of Minnesota (2024)
Interests
- Meta-learning & Cognition:
Exploring the parallels between human cognition, meta-learning, and transfer learning. I constantly experiment with breaking novel concepts into their simplest forms—both to accelerate personal growth and to design clearer onboarding and learning experiences in the products I build.
- Social Design
Studying products and services that use exceptional design to solve pressing social issues (e.g., aging and social isolation in hyper-developed countries like Japan). I actively apply these community-centric principles to my non-profit board leadership and to building technical ecosystems people from different demographics actually trust and adopt. - Consumer Trends & Psychology
Analyzing the historical context and psychology of user behavior, particularly in ultra-fast moving East Asian metropolises. I use these insights to extract hidden needs and drive behavioral product design for AI systems that feel natural rather than forced. - History & Strategy
Reading history as MBA-style case studies. Examining how people made critical choices in pivotal moments provides a treasury of lessons in product strategy, leadership under uncertainty, and the long-term consequences of decisions that shape entire systems and societies.
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Kihon
