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Online classes in our virtual classroom
Flexible classes adapted to your day-to-day life
We promise, if you are not satisfied we will refund your money.


He's from Colombia , currently lives in Ireland

10 10 19


Software Engineer with 7+ years of experience in backend development

Hi, I am David, Backend developer (Java, Springboot, Oracle/PostgreSQL/MySQL/JPA, git, docker, postman ...) for over 8 years. I'm specialized in building full REST APIs with Springboot and friends. I love learning new things on a daily basis and sharing my knowledge is what I like. For me, the best way to approach programming is through practice. We will spend a few minutes understanding your need, your problem, and your objective, and then we will find a viable solution (because often several solutions are possible), by dividing each problem into small problems because it is easier to move 100 bricks of 1 kilo than 1 brick of 100 kilos. Available to help you overcome your obstacles and strengthen your knowledge. Do not hesitate to contact me.


over 1 year of experience teaching online classes

  • Computer Programming
    SQL Beginner, Intermediate
    Java Beginner, Intermediate, Advanced
    Spring Framework Beginner, Intermediate, Advanced
    Software Engineer with 7+ years of experience in backend development




EnglishFull proficiency


Master/Postgraduate Software Engineer And Project Management

Book an online lesson (The calendar displayed shows your local time)

David accepts bookings with at least 24 hours in advance.

hours Monday

Can't find the availability that suits your needs?


Very nice and helpful.
Andre VigGar
3 reviews
10 reviews
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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.

• 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.

• 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".

• How does a lesson at Classgap happen?

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.

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