Freelancer profile translated to English.

Description

Java backend developer with real-world production experience. I don't just write code — I deploy it, maintain it, and ensure it works.

In my current role, I manage +180 Java projects, design APIs in Jakarta EE (JAX-RS), and maintain the complete infrastructure: Tomcat, Nginx, SSL, DNS, firewalls. I am also responsible for an ecosystem of ~4,000 artifacts in Nexus and ~180 repositories in Gitea.

My main project is a digital waybill platform (PWA + REST API + integration with industrial SCADA/MES) that is in production and used by multiple companies in the logistics and construction sectors.

What I can do for you:

→ Robust REST APIs in Java (Jakarta EE / JAX-RS, JPA, EclipseLink) — design, implementation, and deployment

→ System Integration: Connect your software with ERPs, CRMs, REST/SOAP services, Google APIs, Microsoft Dynamics 365 / SharePoint

→ Production Deployment and Maintenance: Tomcat, Nginx, SSL certificates, DNS, VPN, monitoring

→ PWAs with offline functionality, GPS, and Service Workers

→ Repository Migration (SVN/others → Gitea/GitHub) and artifact management (Nexus, semantic versioning)

→ Technical integration documentation (JSON schemas, WSDL, SQL)

Stack: Java (Jakarta EE/JAX-RS, JPA, EclipseLink), JavaScript/TypeScript, Angular, React, MySQL, Nginx, Tomcat, Git/Gitea, Nexus, Leaflet/Traccar.

Native Spanish | Professional English B2

Languages

Spanish
Native or bilingual
English
Fluent

Workplace preferences

Can work on-site

Madrid (up to 50km)

PROIN
SOFTWARE DEVELOPER
April 2025 - Today (1 year and 4 months)
Design and implementation of REST APIs in Java (Jakarta EE / JAX-RS) for industrial and business processes. Deployment of backend services in production environments, including server and SSL configuration. Integration of backend services with frontend applications (Angular, React). Automation of migration and versioning of legacy projects to Gitea, integrating custom scripts into existing Java tools. Implementation of Conventional Commits and internal training on Git with proprietary documentation. Technical administration of Gitea managing an ecosystem of ~180 projects.
Java React REST System Integration TypeScript
YIMAGU GROUP
SOFTWARE DEVELOPER
June 2024 - April 2025 (10 months)
Lead developer of an internal ERP system for managing all areas of a multi-company organization. Implementation of real-time fleet monitoring for ~50 vehicles with Leaflet and Traccar. Construction of interactive map dashboards with custom vehicle and driver markers. Development of route management functionalities integrating Google routing services, with route selection on a map.
CAP MASAO
SOFTWARE DEVELOPER
September 2023 - April 2024 (7 months)
Development of a custom WordPress plugin with PHP, integrating Microsoft Dynamics 365 and SharePoint. Implementation of data synchronization and persistence in WordPress databases. Project delivered and used by a real client.