Logo Home
  • Intro
  • Personal brand How I think, build, and improve

    Philosophy, kaizen, ikigai, and the human side of engineering.

    PhilosophyPrinciples behind my engineering decisions. KaizenContinuous improvement as daily practice. IKIGAIWhere usefulness, craft, and motivation meet. Tech x LifeThe human side of sustainable technical work.
  • 仕事 Things I build, shape, and study

    Companies, projects, experiments, and case studies in one place.

    CompaniesCompanies and initiatives I am building around the platform. ProjectsSelected architecture, product, and platform work. ExperimentsSmall explorations, prototypes, and technical notes in motion. Case studiesLessons and decisions extracted from real delivery work.
  • Competencies
  • Mentoring
  • Blog
  • Resources
Navigate
  • Intro
  • About me
    Philosophy Kaizen IKIGAI Tech x Life
  • Craft
    Companies Projects Experiments Case studies
  • Competencies
  • Mentoring
  • Blog
  • Resources
Discord Twitter / X Instagram YouTube

Contact me

I would love to hear about your project-fill the form or email me directly.

Thanks! Your message has been sent.

Terms

Terms of Use

Pragmatic rules for using the site and its content.

Scope

These terms apply to your use of rinkachi.dev, including browsing content and contacting me.

Acceptable use

  • Do not misuse the site or attempt to access restricted areas.
  • Do not copy or redistribute content without permission.
  • Respect security and privacy expectations.

Services and inquiries

Service details and availability may change. Any engagement starts only after a written agreement.

Intellectual property

All content on this site is owned by rinkachi.dev unless stated otherwise.

Limitation of liability

The site is provided “as is” without warranties. I am not liable for damages arising from its use.

External links

External sites are provided for convenience. I am not responsible for their content or policies.

Changes

Terms may be updated over time. Continued use means acceptance of the latest version.

Contact

If you have questions about these terms, reach out through the contact form.

Last updated: February 9, 2026.

Newsletter across the stack

System design, development, AI/ML, security, and well-being notes-pragmatic, calm, and useful.

No spam. Choose your topics in the next step.

Learn & connect

  • Blog
  • Substack
  • Medium
  • YouTube
  • Instagram
  • LinkedIn

Let's talk

Send a short request and I will reply with next steps.

Prefer a quick call? Pick a Calendly slot.

Book a meeting

© rinkachi.dev. All rights reserved. | Powered by japonics.io

Privacy Policy Terms of Use 職人

Choose your newsletters

Select the topics you want. We will send a confirmation email with a welcome gift.

cookie-consent

> Privacy first

This site uses minimal analytics cookies.

I use privacy-friendly analytics to understand which pages are useful and improve the experience. You can accept or decline without losing access.

Details: Privacy Policy