Every piece of software exists because someone, somewhere, has a problem worth solving. It's easy to forget that once a project starts. Requirements turn into tickets, tickets turn into pull requests, and the original reason for building the thing slowly fades into the background.

I've come to believe that the most valuable skill an engineer can develop is the habit of asking why before asking how.

Start from the outcome

A specification describes what a system should do. It rarely describes what success looks like for the people using it. When engineers understand the outcome — fewer manual steps for an accountant, faster month-end closing, clearer reporting for a manager — they make better trade-offs in a hundred small decisions that no specification could anticipate.

Good software is not measured by how much it does, but by how much friction it removes.

Make the domain visible in the code

One practical way to keep purpose close to the code is to model the business domain explicitly. Names matter. Types matter. When the code speaks the same language as the business, conversations between engineers and the people they build for become much easier.

typescript
type InvoiceStatus = "draft" | "issued" | "paid" | "overdue";

interface Invoice {
  number: string;
  customerId: string;
  status: InvoiceStatus;
  dueDate: Date;
  total: Money;
}

function isOverdue(invoice: Invoice, today = new Date()) {
  return invoice.status === "issued" && invoice.dueDate < today;
}

Nothing about this is complicated — and that is exactly the point. Clear models make intent obvious, reduce bugs and make the system easier to change when the business inevitably evolves.

Principles I try to follow

  • Understand the problem well enough to explain it without technical terms.

  • Prefer simple, boring solutions until complexity is genuinely required.

  • Treat reliability and security as features, not afterthoughts.

  • Measure success by the outcome for users, not by the volume of output.

Technology is a tool. The craft is in using it to build things that last and genuinely help the people who depend on them.