Projects

A selection of the products and ventures I am building in 2026 — plus a hardware R&D project from my engineering years. Click any project to learn more.

Factusync

Desktop invoicing & lightweight ERP for Spanish small businesses.

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Regalosss

Curated gift ideas, powered by affiliate links.

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Customcompu

Online electronics store on WooCommerce + Stripe.

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Alteregotest

An MBTI-style personality test as a fast web app.

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Bruto a Neto

Gross-to-net salary calculator and more, in HTML/JS.

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Photo-RX

2 kW power-LED embedded system — R&D, 2020–21.

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Have a project in mind?

Whether it is a website, a custom board or a full product, I can help you build it.

Get in touch
WhatsApp

Commonly asked questions and answers

WhatsApp:
wa.link/j4hvga
Email:
carlos@agorreta.eu
What does working with you on a project look like?
Every project starts with understanding your goal, your users and your constraints. From there I handle design, development and delivery myself - whether that is a website, a PCB or the firmware in between - and keep you involved at each milestone.
Mostly small businesses, founders and startups. I like projects where I can work directly with the person behind the idea and move fast, without unnecessary bureaucracy.
Yes. Alongside web and software work I design custom electronics and embedded systems - PCBs, IoT devices and ESP32/STM32 firmware - from a first prototype to production-ready hardware.
On the web: WordPress and custom code, with WooCommerce and Stripe for e-commerce. On hardware: schematic and PCB design, ESP32 and STM32 firmware, SPI/I2C interfacing, and lab-grade validation.
Yes. I stay involved after launch for updates, fixes and improvements - and for hardware, for revisions and scaling to production. You will not be left on your own.

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Have more questions?

Let’s schedule a short call to discuss how we can work together and contribute to the success of your project or idea.