Eassa Ayoub

I build the machinery underneath work that somebody has to answer for. In practice that means learning how the work really happens, finding the place where a person is doing a job the software should have been doing, and automating one bounded piece of it — with the judgment and the authority left where they were. I run The Free Battery Factory, which is where that work lives. This site is me, the technical work, and how I think about it.

Because I ran them first. Mortgage, accounting, sales — work where a clumsy interface isn't a bad review, it's someone's close, someone's money, someone's signature on a mistake. That's not a credential, it's a bias: I don't treat complexity as an abstraction, because I was the one absorbing it. It's the difference between designing a screen and knowing who gets the phone call when the screen is wrong.

When you need more features bolted onto something that already works — that's not the job, and you'd be overpaying me for it. When you're shopping for the cheapest option, because I'm not it. And when nothing about the work has a consequence, because most of what I'm careful about stops being worth paying for. I'd rather say that now than invoice you to find out.

Build it, mostly. Sometimes the useful thing is an architecture review and a written account you hand to your own team, and sometimes it's me in the codebase. I take fractional CTO work when the fit is genuinely there. And sometimes the honest answer is that nothing should be built — if the current thing works and replacing it buys nothing, saying so is the result.

That the rule compiles instead of living in a policy doc. A healthcare tool leaking PII got rebuilt with local-only processing — HIPAA-safe by construction rather than by promise. Loan rules scattered across spreadsheets got encoded into a type system, so an illegal loan became a compile error. The constraint stops being something a person remembers to check and becomes something the build refuses to produce.

Because "trust me, I understand systems" is a weak technical standard. The packages, the specs and the tests are public where they can be, stated at whatever claim state they're actually at — including the lines that stopped. You never have to read any of it. It's there so the claims can be checked.