Yamakei.info

Notes on building reliable software with AI in the loop.

AI-augmented software engineering, grounded in real shipped systems.

Case studies and technical notes from building production-ready products as a solo developer.

What This Site Is

  • End-to-end systems: mobile, web, backend, and workflows that ship.
  • Architectural and product decisions that shape correctness and velocity.
  • Practical AI usage inside real development loops, not demos.

Flagship Case Study

RallyHub MVP
Shipped a production-ready mobile app and backend in ~10 days, centered on guest-first identity and a decentralized trust model for casual play.

Read the RallyHub MVP case study

How to Navigate This Site

Case Studies detail real systems, decisions, and outcomes.
Explorations capture focused experiments and workflow learnings.
Artifacts provide concrete outputs like schemas, diagrams, and prompts.

If you are evaluating how AI changes senior-level software development, start with the RallyHub case study.