Carlos
Mendoza.
— Product Designer & Full Stack Developer
Product designer who also ships the code. Booking, pricing, and marketplace products.
I design products and build them end to end — the form, the calculation behind it, and the edge case nobody drew.
My story
— Contact
Let's bring your idea to life.
Open for freelance work and collaboration — especially products with a calculation, a schedule, or a rule at their core.
hi@carlos.example“Most bugs are rules nobody wrote down. I write them down first.”
6
Live projects.
11
Years practising.
My Services.
Design and code from the same desk, so the rule behind a screen and the screen itself never drift apart.
Product Designer.
Research, flows, and UI for booking and marketplace products.
3 live projects
Pricing & Booking Logic.
Calculators, availability rules, and schedules modelled before they are drawn.
4 live projects
Full Stack Developer.
Accessible front-ends with React and Next.js, deployed and maintained.
6 live projects
Live projects.
No borrowed logos here — just six demo products you can open and use. Each name leads to its case study.
— Portfolio
Selected projects,
with the numbers behind them.
Three of the six: what the problem was, the rule I modelled, and a link to the live site.
See all six
— Blog
What's new?
Notes from the projects.
Short write-ups on the rules behind the screens: prices, schedules, and availability.
Sep 12, 2026 — Product
The price is not the last number
Aug 20, 2026 — Design
Pricing inside the grid
Jul 30, 2026 — Engineering