About me

Eudaldo
Cal Saul

Full-Stack Developer & Systems Technician

20 years of technical experience. From repairing hardware in an electronics shop to operating critical industrial systems 24/7, and now building complete web products from scratch.

I understand technology from top to bottom: I know what happens on the server, in the network, in the hardware, and in the user interface. This allows me to offer real and comprehensive solutions, without depending on third parties for every piece of the puzzle.

Web & App Development Advanced

PHP · Python · JavaScript · SQL · Firebase

Systems & Networking Expert

Linux · Windows Server · TCP/IP · Apache

Hardware & Maintenance Expert

Diagnosis · Repair · Preventive

Home Automation & IoT Advanced

Hardware + software · Automation

Web Design & UX Advanced

HTML5 · CSS3 · Tailwind · Responsive

20+

Years exp.

B2

Cert. English

Tools

Technical Stack

JavaScript

ES6 / Vanilla

PHP

Backend

Python

Backend / Scripts

HTML5 + CSS3

Frontend

SQL / MySQL

Databases

Firebase

Auth, Firestore, Hosting

Node.js

Express / SSR

Linux

Systems Admin

Windows Server

Administration

Git

Version Control

Tailwind CSS

UI / Design

Gemini API

AI Integration

Education

Formation

school

Advanced Degree in Web Development (DAW)

Web Application Development

CIFP César Manrique

school

Degree in Computer Engineering

Information Technologies

UNED

computer

Micro-computing and Networks Technician

Technical Specialization

Círculo Informático

flight

Private Pilot — CPL/IR in progress

ATPL(A) Theory

Canvia + BlueTeam Aviation

Trajectory

Experience

Founder & Lead Product Engineer

TesIA.es

Complete design, development, and operation of a web platform for civil service exam preparation. Full-stack architecture, AI integration, SSR for SEO, community management, and premium monetization.

JavaScript Firebase Node.js Gemini API Tailwind CSS SSR

Critical Systems Operator | Data Technician

Critical Systems Operator · 16 years

16 years operating critical industrial infrastructure 24/7 in desalination plants. Designed data analysis systems, supervised complex technical teams, and maintained high availability protocols with uptime >99%.

SCADA Excel VBA Industrial Hardware Data Analysis High Availability

Specialized Technical Advisor

Specialized Technical Advisor

Specialized technical advice on hardware, computing, and photography. Customer support, equipment diagnosis, and technology inventory management.

Hardware Technical Support Electronics

Shall we talk?

If you need someone who truly understands your problem and solves it, write to me.

Contact me arrow_forward