Hey, I’m Kefei.
Engineer by training, writer by curiosity, explorer by choice.
I’ve built airports, databases, and now — ideas. These days I live in New York City, writing about how we grow, lead, and stay bold when life keeps changing fast.

From Structure to Leadership

I started out designing buildings in San Francisco — learning how to make things stand through earthquakes. Then I moved into tech in Silicon Valley, helping build the early cloud world and lead global teams.

Now I’m building something different: a space where reflection meets action, and where leadership starts from within.

That space is Koffeemocha — part newsletter, part community, part blueprint for becoming a grounded, creative leader in a noisy world.

Why I Started It

After years of chasing projects and execution, I realized leadership isn’t about control — it’s about clarity.

So I began writing: short reflections on how we build confidence, handle change, and stay human in a world run by technology.

Every essay is a small act of leadership — the kind that starts with one question:
How can I build something true, and help others do the same?

What You’ll Find Here

  • Stories that blend engineering, tech, and real life.

  • Ideas on growth, creativity, and leadership you can practice daily.

  • Reflections on how AI is changing not just work, but how we think, and engineer.

If you want to lead yourself first — before leading others — you’ll feel right at home here.

Let’s Stay Connected

I write every week at koffeemocha.com — like grabbing a coffee with a friend who’s seen a few shakes but still believes in new beginnings.

Subscribe if you’re into growth, clarity, and conversations that last longer than a scroll.

Every cup has a story.
Let’s brew yours.

Kefei

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Weekly letters from a Silicon Valley engineer turned NYC essayist — on courage, reinvention, and navigating transitions with humor, soul, and strategy. → Just Koffeemocha It. ☕️

People

From Silicon Valley builder to NYC soul-searching writer, I brew weekly insights on reinvention, resilience, and purpose — for engineers, retirees, and trailblazers navigating bold transitions. Just koffeemocha it.