Battery Engineer by Day, App Developer by Night — Here’s Why

Jiho Lee — Thu, 30 Apr 2026 13:29:31 +0000

Ever since I was a kid, I've been drawn to things that move on their own — machines, systems, anything that just runs.

Maybe that's just a boy thing. But looking back, I think it was more than that. I wasn't some kind of prodigy, but the pull toward "things that work automatically" was always a little stronger in me than in most people around me.

That curiosity eventually led me down a winding path between science and engineering — and I ended up in the battery industry, which was a pretty exciting place to be in Korea for a while. These days I spend my days doing battery research, and honestly, I love it.

But the itch never really went away. The need to build something that runs on its own.

Video games didn't scratch it. I tried iOS development once, but the gap between imagination and working code was wide — and I'm no genius. Late nights only go so far.

Then AI showed up.

And I started to realize that my broad-but-shallow knowledge, combined with the right tools, could actually turn ideas into real things. That's been a genuinely new feeling.

So I'm going to start building apps. Properly, this time.

The first one is Dark Metronome — a metronome app I always wished existed when I played drums. Clean UI, built for dark environments. No fluff. (More on that in the next post!)

The second one is still in progress — something to help cut through the noise of information overload and keep me focused on what actually matters. I'll get into that as it develops.

Anyway. This is the beginning. Should be fun. **

DEV Community: Jiho Lee

Battery Engineer by Day, App Developer by Night — Here’s Why