I turn it into something an engineer can build from — data model, architecture, security, real costs. Then I build it, or you take the documents elsewhere. Either way, you own them.
Free. No pitch. Evenings and weekends.
Three things happen to almost every first-time founder who hires a developer. None are about the code.
Every engagement stands on its own. Nothing is credited back against a later build — that would make the first one a sales call.
You have a quote, a half-built product, or a developer you're not sure about. I review it and tell you plainly what I'd do differently.
Two weeks of structured conversation that turns your idea into a complete, buildable specification — one you can hand to any competent engineer, including me.
Fixed price against the sprint specification. No hourly billing, no surprise invoices, no scope arguments.
Your product works, but there's no documentation — so no engineer can take it over, no investor can review it, and no lawyer can assess it.
Someone to ask before you make a decision you can't undo — vendor renewals, security questions, whether a feature is a week or a quarter.
The artifacts a serious engineering team produces before writing a line of code. Most founders never see them, which is why they end up stuck.
What the product does, who for, and in what order. The document an engineer reads first.
How money moves, who is accountable, which rules are non-negotiable.
Every entity and how each relates. Get this wrong and everything above it inherits the mistake.
Tables, fields, types, constraints — ready to implement directly.
Services, hosting, and tools, with the reasoning — including what I chose not to use.
Who can see which records, and how that's enforced at the data layer.
Real monthly figures over a year, plus what to postpone until you have users.
Not a sales call. I ask about the business, the money, and the edge cases you haven't considered. Usually the most useful hour of the process.
Your answers become the seven documents. Where there's a decision, I explain the trade-off and you choose.
Build with me, take the specification elsewhere, or sit on it. The price doesn't change.
Fixed price against the spec, in milestones you can see. Documentation stays current as we go.
Better to find out on a free call than three weeks in. If any of these sound like you, say so.
Marketplaces will build something for a fraction of this — sometimes the right call if you're still testing whether anyone wants it.
I won't skip the specification. If you want hands on a keyboard now, you want a developer, not me.
Part of what you're paying for is being told when an idea is expensive or risky. If you'd rather someone execute your plan as written, that just isn't this.
I don't take equity in place of fees. That's a co-founder arrangement — a different relationship entirely.
If it needs three or four people building in parallel, you need an agency or your first hires. I can scope it and help you evaluate them.
Clinical records or money at volume need dedicated compliance work from day one. I can set the foundations, but you'll need specialists too.
Yes — documents, code, database, accounts, every subscription in your name and under your login. If the domain and hosting sit in someone else’s account, you don't control your own product. Worth checking whoever you hire, including me.
A fine outcome — the documents are built for it. You paid for the thinking, and the thinking is yours.
No — explaining it in plain language is most of the job. You'll finish understanding your own product better, which matters when you're hiring or raising.
It doesn't. The price is fixed against a written specification before anything gets built. Change your mind mid-build and we write down what it costs, and you decide.
Two weeks for the sprint, then five to sixteen to build — realistically two to three months for a simple product. If someone quotes you two weeks, ask what they're leaving out.
Then the Technical Review is what you want. Frequently the answer is that your developer is doing fine and you should stop worrying — a legitimate result.
Your choice. Some take the documentation and hire someone cheaper; others keep me on call. No lock-in either way — that's the point.
Evenings and weekends, and I'm honest about capacity — a few projects at a time. In exchange you get someone who does this at much larger scale every day.
I'm Cordero Perez. I work on data infrastructure and AI governance inside a Fortune 500 technology company — the systems that decide whether data can be trusted and whether an AI can act on it safely.
Before that, three years as a senior consultant in AI and data engineering at a Big Four firm, and seven years in federal and municipal oversight.
A strange background for helping someone launch their first app, and exactly the point. The decisions I make for you on a Tuesday evening are the ones I'd defend in a compliance review.
Describe it however it comes out — you don't need the right words, that's the job. If I'm not the right person, I'll say so.