In 2025, I realized something: many students were failing not because they were bad, but because no one was explaining things properly.
And I thought: “If I was able to understand it, I can teach it. And I can do it better.”
I’m a technician in SMR with a mention for Best Academic Record, and I’m currently studying ASIR. I’ve worked in support, systems, and cybersecurity in companies in Spain and Portugal, and I run an ethical hacking blog.
Since then, my mission has been clear: helping people understand IT with clarity, practice, and real results. That’s the spirit of Avanza de Verdad.
My method:
• Go straight to the point: No confusion, no textbooks thrown at you. I explain exactly what you need to learn.
• Learn by doing: You don’t copy commands—you understand them. I focus on making sure you know what you’re doing and why.
• Results you can feel: From the very first class, you apply what you learn. No useless theory, just real skills.
If you’re looking for a teacher who explains things properly and helps you truly move forward, I’ll be happy to help you.
Availability
Choose a date and time to start booking your class.
Times are displayed in your local time zone.
Can't find the availability that suits your needs?
Sin su ayuda mi hijo no habría aprobado la asignat
★★★★★
Sin su ayuda mi hijo no habría aprobado la asignatura, y al final lo ha conseguido!. Rubén es un profesor que no solo enseña, sino que motiva. Sigue así, porque ayudas a muchos chicos a creer en sí mismos y les das ilusión y esperanza para seguir estudiando. Gracias de corazón
Me he visto estancada con mi proyecto de ASIR y si
★★★★★
Me he visto estancada con mi proyecto de ASIR y sin duda alguna, las clases de RUBEN han sido luz en el camino. La metodología y la paciencia son clave en la enseñanza y Rubén ha superado con creces mis expectativas.
I teach
Computer Science
IP networks
Windows
Linux
Server
Computer Programming
SQL
PHP
CSS
HTML
Web Development
Languages I speak
SpanishNative
EnglishWorking proficiency
Education
Técnico En Sistemas Microinformáticos Y Redes
Degree - B.A.
Técnico Superior En Administración De Sistemas Informáticos En Red
Degree - B.A.
Ise Ii (B2) – Trinity College London
Certification
Ise Ii (B1) – Trinity College London
Certification
Cwes – Hack The Box
Certification
Certified Red Team Analyst (Crta) – Cyberwarfare Labs
Certification
Web Red Team Analyst (Web-Rta) – Cyberwarfare Labs
Certification
Frequently Asked Questions
Can I cancel a booking?
Yes, you can cancel booking up to 8 hours before the lesson starts, indicating the reason for the cancellation. We will study each case personally to carry out the refund.
Can I modify a booking?
Yes, something unexpected can always happen, so you can change the time or day of the lesson. You can do it from your personal area in "Scheduled lessons" through the option "Change date".
Where are the lessons held?
The class is done through classgap’s virtual classroom. Classgap was developed specifically for educational purposes, including many useful features such as: digital whiteboard, online text editor, webcam, screen sharing and many more. View virtual classroom
How do I pay for the lesson?
At the time you select a lesson or package of hours, you will make the payment through our virtual payment service. You have two options: - Debit / Credit - Paypal Once the payment is settled, we'll send you an e-mail with the booking confirmation.
Other recommended online Computer Science teachers:
Understand the true meaning of Freedom by learning GNU/Linux ⏤ Hey Learner, I am Anurag or Anu in short. I am a Computer Science Degree Student. I have been programming and working with computers for more than 4 y...
Unlock the World of Coding: Empowering Future Innovators with 4 Years of Expertise ⏤ Hi! I’m Rai Waqas, a professional Software Engineer and experienced instructor with 4+ years of industry and teaching experience. I help students unde...