Jesus Polo

Design, development and deployment of dynamic websites with HTML5, CSS3, JavaScript, jQuery, PHP and MySQL. Creation of functionalities such as login systems, administrative panels, interactive forms and complete CRUDs. Development and consumption of REST APIs using PHP and relational databases. Complete administration of own and client VPS servers: LAMP stack installation, domain configuration, corporate emails, SSL certificates, security management and backups. Implementation of good web security practices: input validation, protection against SQL injections, HTTPS configuration. Optimization of web and database performance: efficient SQL queries, resource compression, cache structure. Direct management with clients: meetings to gather requirements, partial deliveries, after-sales support and incident resolution. Project deployment via Git (Bitbucket/GitHub/GitLab). Application of responsive design (mobile-first) for multiplatform compatibility. Basic technical documentation and user manuals for non-technical clients. Participation in multiple projects in parallel applying agile approach (Scrum).

Development and maintenance of web applications using PHP. Design and implementation of new functionalities and resolution of incidents in existing platforms. Structuring and optimization of backend modules and projects. Generation of reports from databases, using MySQL and Excel. Configuration and maintenance of VPS server, including domains, emails, security and backups. Integration of dynamic interfaces with JavaScript for better usability. Use of Git for version control and collaborative deployments. Optimization of SQL queries and backend performance. Support and basic training to administrative staff in the use of internal systems. Implementation of basic security measures (SSL certificates, HTTPS redirection, input validation).

Attention and resolution of technical support tickets related to web platforms and internal services. Execution of advanced SQL queries on MySQL databases for the generation of custom reports and extraction of critical information. Monitoring and documentation of incidents, as well as escalation of complex problems to the development team. Constant communication with end users to understand technical needs and provide effective solutions.