I mainly focus on backend technologies (PHP, Symfony, Laravel, SQL), but I am also comfortable working with frontend (HTML, CSS, Bootstrap, JavaScript, jQuery). I work in Linux and Windows environments and use SSH and bash. I am also interested in the topic of web application security - I take care of proper data validation, access control and basic security against attacks such as SQL Injection and XSS. I am eager to take my first job as a Junior Developer to further develop my skills and gain experience in teamwork.
My adventure with programming began in late 2015/2016, when I was looking for a solution to control heating at home.
The systems available on the market were integrated with modern heating systems, and I had an older system.
So I decided to create my own program tailored to my needs. This system still works today and is still being developed.
π Home heating control.
Over time, other needs arose. As an international driver, I had to create time-consuming daily reports of
trips through various countries in accordance with EU regulations. I decided to automate this process and created an application to manage working time,
rest and documentation. I used it from 2016 until the end of 2024.
π Organizer of work ne own needs.
The next step was volunteering at the Association of Radio Communications Enthusiasts, where I helped create a system for the 10th anniversary graduation campaign.
I prepared an information page and a so-called "cluster" - a form for recording radio communications and a mechanism for counting points.
After the action, I wrote my own CMS system for managing the association's website, which is still working and being developed today.
π Volunteer Association
π QRZ Oscar Sierra
In 2023/2024 I completed my first project for the company - a simple but practical system for monitoring the work of the watchman.
The main requirement was to create a reliable, almost βindestructibleβ solution that does not require active maintenance (such as bouncing RFID tags) from the employee.
I wrote a bell-switch-based application that records the watchman's presence at a given place and time, with reports available remotely in a browser.
π Monitoring the watchman's work in the company