04Notes & writing

Blog.

An archive of essays published between 2015 and 2026 on AI engineering, innovation leadership, digital health compliance, and building across Japan and Asia-Pacific.

AI & LLM Engineering Innovation Leadership Healthcare AI & Compliance Japan & APAC Scientist-Engineer
15 essays · Original publication dates span 2015–2026 · Archive refreshed on 07 May 2026
Japan & APAC

What 30 years of working in Japanese taught me about engineering leadership

By the time you have worked in Japanese for thirty years, fluency stops being about vocabulary and becomes an operational capability for leadership.

12 January 2026 · 8 min read
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Innovation Leadership

What building solo systems after hours taught me about leading engineering teams

When you build alone, there is nobody to misunderstand your requirement and nobody to rescue your architecture. The feedback loop is merciless and useful.

10 October 2025 · 7 min read
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AI in the Real World

Why I run my own AI agent infrastructure — and what it teaches me about enterprise AI

My AI agents save me time some days and create debugging work on others. That tradeoff is exactly why they are worth running.

30 July 2025 · 8 min read
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AI in the Real World

The difference between an AI demo and an AI product

I have seen many AI demos that looked inevitable and very few AI products that deserved to exist in production. The gap is where most investment disappears.

17 January 2025 · 7 min read
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Scientist-Engineer

From biosensors to LLMs: 20 years of measuring things that are hard to measure

In 2003 I was measuring lipid bilayers on silicon microelectrodes. Two decades later I was measuring failure behavior in AI systems. The tools changed. The measurement discipline did not.

3 November 2024 · 8 min read
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Healthcare AI & Compliance

What ISO 13485 actually means for software engineers

When engineers say they already do most of ISO 13485 informally, they are often right. The problem is that informal discipline cannot be audited or scaled.

28 August 2024 · 7 min read
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AI in the Real World

17 POCs before we shipped: how we validate AI systems in regulated healthcare

Validation in healthcare AI is expensive, but failed production deployments are usually more expensive. That is why deliberate POC discipline matters.

9 May 2024 · 8 min read
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Innovation Leadership

How we built a $16M digital-health spin-off inside a 90-year-old Japanese company

The hardest part of building HeartVoice was not the technology. It was persuading a hardware-first organization to fund a data-platform future without destabilizing its current business.

14 February 2024 · 8 min read
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Healthcare AI & Compliance

Six countries, six data-privacy laws: what engineering leaders need to know about ASEAN health data

There is no single ASEAN privacy problem. There are several jurisdiction-specific problems that share some vocabulary and collide inside the same platform.

6 November 2023 · 8 min read
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Innovation Leadership

Why the POC phase is the most misunderstood tool in corporate innovation

The seventeenth POC was the one we shipped. The other sixteen were not waste. They were the cost of learning what a production system would actually have to survive.

18 September 2023 · 7 min read
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Healthcare AI & Compliance

How to ship AI in a regulated healthcare environment without killing your velocity

Shipping AI in healthcare is difficult for reasons that have very little to do with model demos and a great deal to do with traceability, risk, and operational discipline.

16 August 2022 · 8 min read
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Japan & APAC

Distributed engineering across five time zones: what actually works

The time zones are manageable. The dangerous part is assuming that people in different engineering cultures interpret the same instruction the same way.

14 September 2021 · 7 min read
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Scientist-Engineer

Hypothesis-driven engineering: applying the scientific method to product decisions

Every product decision begins as a claim about the future. Teams that forget that build faster, but they do not necessarily learn faster.

22 July 2020 · 7 min read
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Japan & APAC

Why Japan's monozukuri philosophy makes you a better engineering leader everywhere

Monozukuri is often translated as making things. In practice it is closer to building with respect for process, mastery, and the long-term cost of shortcuts.

5 April 2018 · 6 min read
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Scientist-Engineer

What a PhD in physics taught me about leading engineering teams

The most useful thing my physics Ph.D. taught me about leadership was not a technical technique. It was a disciplined way of moving from uncertainty to evidence.

8 October 2015 · 7 min read
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