Freelancer profile translated to English.

Description

Java Software Architect | Spring Boot | AWS | Generative AI

I help companies modernize critical Java applications, design scalable architectures, and incorporate Generative Artificial Intelligence solutions without disrupting their business.

I am a Java Software Architect with over 18 years of experience developing and evolving enterprise platforms for sectors such as banking, insurance, retail, public administration, and air transport.

How can I help you?

✔ Modernization of Java applications and reduction of technical debt.

✔ Design of microservices-based architectures.

✔ Backend development with Java, Spring Boot, and Quarkus.

✔ Cloud Architecture on AWS.

✔ Integration of REST APIs and enterprise systems.

✔ Hexagonal Architecture, Clean Architecture, and DDD.

✔ Integration of Generative AI solutions using Spring AI, LangChain4j, and RAG architectures.

Main Technologies

Java • Spring Boot • Quarkus • AWS • Docker • Kubernetes • Kafka • PostgreSQL • MongoDB • REST APIs • Spring AI • LangChain4j • RAG • GitHub Actions

I have participated in technological transformation projects, helping to migrate legacy systems to modern cloud architectures, improve the performance of critical applications, and design solutions prepared to grow.

I seek to collaborate with companies that need a professional capable of adding value from day one, combining architectural vision, backend development, and technical leadership to deliver robust, scalable, and maintainable solutions.

Industry field of expertise

Languages

English
Conversational
Spanish
Native or bilingual

Workplace preferences

Remote only

Primarily works remotely

Freelance
Freelance Senior Lead Java Developer
TRANSPORTATION
June 2026 - Today (1 month)
Madrid, Spain
▸ Development and evolution of microservices-based backend applications using Java 25 and Spring Boot.
▸ Participation in technical reviews, definition of standards and best development practices.
▸ Development of REST APIs and backend services following Hexagonal Architecture and DDD principles.
▸ Creation, structuring, and maintenance of functional and technical documentation for AI systems exploitation.
▸ Definition and application of AI governance processes to ensure the quality, traceability, and consistency of corporate knowledge.
▸ Integration of vector databases using PostgreSQL pgvector for semantic search and contextual retrieval.
Java Spring boot AWS Software Architecture Generative AI
Capgemini
Senior Lead Software Engineer
BANKING AND INSURANCE
May 2025 - June 2026 (1 year and 1 month)
Madrid, Spain
▸ Design of microservices with Java 21 (Spring Boot 3 / Quarkus) under Hexagonal Architecture and DDD, documented with OpenAPI and AsyncAPI for international retail and banking projects.
▸ High availability architecture in banking supporting 10,000 TPS with an SLA of 99.99% availability.
▸ Optimization of mass settlement processes with Spring Batch, reducing execution times by 35%.
▸ Leadership of frontend migration to Angular 20, improving Core Web Vitals by 40% and eliminating technical debt.
▸ Standardization of scalable services with Nova framework integrating Circuit Breaker and Bulkhead patterns for critical banking environments.
▸ Messaging stack with Apache Kafka and RabbitMQ + event governance with AsyncAPI; polyglot persistence in PostgreSQL, Oracle, and MongoDB.
▸ CI/CD pipelines with Jenkins • Docker ◦ Kubernetes achieving 90% test coverage (JUnit/Mockito).
▸ Incorporation of AI-assisted development workflows (GitHub Copilot + Claude) for acceleration of scaffolding, code review, and test generation, reducing implementation time for new features.
▸ Collaboration with BBVA's Corporate Architecture team in the design and development of an internal portal for AI governance: usage policies, model taxonomy, traceability, and regulatory compliance.
Java Spring boot Software Architecture Quarkus Generative AI
Tragsatec
Software & Cloud Engineer
PUBLIC SECTOR
September 2023 - May 2025 (1 year and 8 months)
Madrid, Spain
▸ Migration of critical applications to Java 17 + Spring Boot 3, modernizing the microservices architecture for highly regulated environments.
▸ Complete cloud infrastructure on AWS (EKS, ECS, Lambda, S3) with automated CI/CD using Jenkins • Docker ◦ Kubernetes.
▸ Observability stack with Prometheus + Grafana reducing incident response time by 30%.
▸ Real-time data streams with Kafka and hybrid persistence in Oracle and MongoDB.
Software Architecture AWS Java Spring boot Apache Kafka