César Abades

Design and development of the Veri*factu (AEAT) integration for e-commerce environments, including both technical implementation and complete analysis of regulatory and functional compliance.

Key Responsibilities:

- Comprehensive regulatory and functional analysis of the Veri*factu regulation applied to e-commerce.

- Design and development of a REST API in Symfony (PHP) for managing Billing Records.

- Integration with the official AEAT web services (Veri*factu).

- Development of a PrestaShop module directly connected to the API to:

-> Extract orders and invoices

-> Transform data into fiscal-compliant format

-> Manage the submission and status control of records

- Implementation of workflows for invoice creation, submission, validation, error handling, and traceability.

- Focus on robustness, automation, and legal compliance.

Technologies: Symfony, PHP 8, REST API, SOAP, XML/XSD, MySQL, PrestaShop, Veri*factu (AEAT)

Development and maintenance of online stores in PrestaShop, participating in the entire project lifecycle: analysis, implementation, customization, and deployment.

Main Responsibilities:

- Creation of complete online stores in PrestaShop (1.7 / 8).

- Development of custom modules to meet specific business needs.

- Development and adaptation of PrestaShop themes, including layout and visual customization.

- Integration with external services (payments, shipping, ERP, APIs).

- Performance optimization, evolutionary maintenance, and incident resolution.

- Functional analysis of requirements and implementation of custom e-commerce solutions.

Technologies: PrestaShop 1.7 / 8, PHP, Smarty, HTML, CSS, JavaScript, MySQL

During this project, I was responsible for designing a multi-channel application for unit and campaign-based trading of financial derivatives (FX Spot, FX Forward, American FX Forward, FX Options, Equity Options...), as well as liaising with both the business and technical teams to ensure project success.

Due to project demands, I prioritized the application's flexibility and modularity, allowing for the inclusion of new products with a reduced time-to-market.

On a technical level, the application was developed monolithically in Java. During this period, we separated the application into a front-end (Vue.js) and a RESTful API with microservices.

For project tracking and test execution, I used JIRA, enabling the team to utilize an agile methodology based on SCRUM.