Freelancer profile translated to English.

Description

Senior Java Backend Developer specializing in system integration, APIs, and evolutionary application maintenance.

I help companies build, integrate, and maintain robust, scalable, and efficient backend services, especially in environments where connecting existing systems (REST APIs, SOAP, microservices) is key.

I have over 15 years of experience working with Java and Spring on projects of varying complexity, including system integration, API development, and maintenance of production applications.

I have participated in projects where stability, performance, and maintainability are critical, providing practical, business-oriented solutions.

🔧 Specialties:

- Backend development with Java and Spring

- Design and implementation of REST APIs

- System integration (REST / SOAP)

- Microservices

- Maintenance and evolution of existing systems

🚀 Personal project:

Development of a corporate website for a construction sector company (focused on performance, usability, and online presence.

Complete project from template adaptation to production deployment, based on Astro and optimized for fast loading and user experience.

📅 Availability:

Currently interested in occasional collaborations (approx. 8–10 hours per week), ideal for technical support, evolutionary updates, or specific integrations.

Languages

Spanish
Native or bilingual

Workplace preferences

Remote only

Primarily works remotely

Freelance / Proyecto propio
Corporate website development with Astro (real project)
SOFTWARE PUBLISHING
February 2026 - March 2026 (1 month)
Madrid, Spain
Development of a corporate website for a construction sector company (focused on performance, usability, and online presence.

Complete project from template adaptation to production deployment, based on Astro and optimized for fast loading and user experience.

Responsibilities:
- Adaptation and customization of the Astrowind template (MIT license)
- Content and navigation structuring
- Performance optimization (Core Web Vitals)
- Deployment to the production environment
Astro Web Development Front-End Development Web Optimization SEO
ALTEN
Senior Java Backend Programmer Analyst
SOFTWARE PUBLISHING
June 2007 - Today (19 years)
Madrid, Spain
Development and maintenance of backend applications in enterprise environments.

Main functions:
- Development of business logic in Java
- Integration with external systems using SOAP services and REST APIs
- Evolutionary maintenance and incident resolution
- Adaptation of applications to new functional requirements

Experience in environments where stability, system integration, and service continuity are critical.
Java Spring REST API Web Services Microservices