Carla Ferrer

Configuration Specialist @Deel | Building payroll systems with AI | PMP® | ⚙️ | Wine enthusiast, avid reader & proud parent

[Carla Ferrer @cferrerbr]

Payslip rule of thumb: an advance changes your net pay, a loan can change your tax line. Read the deduction order before you read the total.

[Carla Ferrer @cferrerbr]

I haven’t published a Spanish payroll post in a long time, and since I recently spoke about loans after my trip to Italy, here it goes.

A payslip tells you more about a country than any travel guide. Part 7.

[Carla Ferrer @cferrerbr]

The advance is net only and is deducted at the next payroll so nobody is paid twice. The loan is different: it is repaid as installment plus interest, and if the rate is below the legal rate, the difference is a benefit in kind that raises IRPF.

[Carla Ferrer @cferrerbr]

Received Thursday, packed Friday, off for the weekend! ✈️ But jokes apart- “Same team. Bigger dreams. Different places. Same mission.” Two years building payroll systems that actually work. That’s the work. That’s the future.

[Carla Ferrer @cferrerbr]

Two years in DLP configuration: Deel handles 150+ countries without breaking. Other payroll software gets confused at the border. Deel doesn’t. 40k+ companies know. Vote here https://t.co/socvqi6Uy9 🚀

[Carla Ferrer @cferrerbr]

Last swim of the year. Husband's birthday, sunset over the water, family around me. The water was noticeably colder than three weeks ago. Seasons turn faster than we think. The memories we make in between, those are what stick. When did you last actually slow down to notice?

[Carla Ferrer @cferrerbr]

What rule in your system *feels* like pure bureaucracy but actually solves a real problem nobody talks about?

[Carla Ferrer @cferrerbr]

Last weekend in Florence I learned the Medici didn't just finance Europe. They *invented the rules* to do it. Then I got back to my desk and a feature lands: company loans. And suddenly their strategy makes sense.

[Carla Ferrer @cferrerbr]

The Medici understood: complexity in the rules isn't a bug. It's the price of scale. You can't manage empire with simple rules. Same with payroll. Every rule feels like bureaucracy until you realize it's the only thing between fair and chaos.

[Carla Ferrer @cferrerbr]

Trusting it would've sent me reviewing the wrong things entirely. The fix wasn't clever — it was refusing to assume relevance just because something sounds consistent.

[Carla Ferrer @cferrerbr]

I was 3 tabs deep into Jira on a Tuesday, convinced I understood the task, when I almost made a real mistake. 🧵

[Carla Ferrer @cferrerbr]

Unpopular opinion: a clean, consistent name is sometimes the least reliable part of a system.

[Carla Ferrer @cferrerbr]

Rewrite it as one clean, specific requirement with examples. The mess isn't a sign anyone's bad at their job — it's a sign nobody's done step two yet.

[Carla Ferrer @cferrerbr]

A PM messaged me last week, out of patience: "nobody can agree on what this requirement actually says anymore." 🧵

[Carla Ferrer @cferrerbr]

How I break one down: collect every version, find where they contradict each other (they always do), confirm which is current.