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Rafael Gual BorgesRG

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Acerca de Rafael

I am a Head of Backend Engineering and Solution Architect with extensive experience designing and delivering scalable, secure backend systems in complex enterprise environments.

My background combines hands-on technical expertise with team leadership, allowing me to not only design robust architectures but also ensure their successful delivery by engineering teams.

I specialize in:

Backend architecture (microservices and modular monoliths)
API design and OpenAPI-driven development
Secure implementation (OAuth2, RBAC, endpoint protection)
CI/CD processes and quality validation in delivery pipelines
Identifying and preventing common issues before production

Throughout my career, I have worked on systems where reliability, security, and performance are critical, helping teams improve their architecture, reduce risks, and deliver production-ready solutions.

How I work

I focus on short-term, high-impact engagements, supporting teams with:

Architecture reviews and system design improvements
API and backend best practices
Security implementation and validation
CI/CD and engineering process optimization

My goal is to provide practical, actionable solutions that teams can apply immediately.

Availability

Currently available for part-time or short-term consulting, typically working on focused engagements that deliver fast and measurable value.
  • Español

    Bilingüe o nativo

  • Inglés

    Competencia profesional completa

Solo teletrabajo
Lleva a cabo sus proyectos principalmente en remoto

Experiencia

  • SIX
    Head Backend Application Engineering
    AGENCIAS DE SUBCONTRATACIÓN
    enero de 2026 - Hoy (5 meses)
    Madrid, Spain
    Head of Backend Engineering at SIX Group, leading backend teams responsible for designing and delivering scalable, secure, and high-performance systems in enterprise environments.

    I combine hands-on technical expertise with team leadership, ensuring that backend systems are not only well-architected but also efficiently delivered by high-performing teams.

    My focus areas include:

    Backend architecture (microservices and modular monoliths)
    API strategy and design (OpenAPI, contract-first approach)
    Security (OAuth2, RBAC, endpoint protection)
    Engineering processes, code quality, and CI/CD practices
    Team leadership, mentoring, and delivery optimization

    I work closely with cross-functional teams to align technical solutions with business goals, while driving engineering standards, scalability, and long-term maintainability.

    What I bring:

    Strong leadership of backend engineering teams
    Deep expertise in system design and API architecture
    Ability to scale both systems and teams
    Focus on delivering secure and production-ready solutions
    Tech Lead AI Automation API Strategy Software Architecture CI/CD Optimization
  • SIX
    Arquitecto de soluciones
    AGENCIAS DE SUBCONTRATACIÓN
    mayo de 2024 - enero de 2026 (1 año y 8 meses)
    Madrid, Spain
    Solution Architect at SIX Group with strong expertise in backend architecture, API design, and security for enterprise-grade systems.

    I specialize in designing and implementing scalable solutions using Java and Spring Boot, with a strong focus on:

    API architecture and OpenAPI-driven design
    Security (OAuth2, role-based access control, endpoint protection)
    Microservices and modular monolith architectures
    CI/CD integration and quality validation in pipelines

    I have hands-on experience working in complex enterprise environments, ensuring that systems are secure, maintainable, and production-ready.

    I also build tools and solutions to automate security validation and detect misconfigurations in APIs, helping teams prevent critical issues before deployment.

    What I bring:

    Strong technical leadership and system design skills
    Deep understanding of backend security patterns
    Ability to quickly identify risks and improve existing architectures
    OpenShift Spring boot Angular Helm Postgre
  • VASS
    Senior FullStack Developer - Inditex
    AGENCIAS DE SUBCONTRATACIÓN
    julio de 2021 - mayo de 2024 (2 años y 10 meses)
    Madrid, Spain
    • - Java versión 11 - 17 y Spring Boot
    • - Arquitecturas orientadas a eventos
    • - Web services (REST, gRPC, GraphQL)
    • - Testing unitario, BDD y TDD
    • - Microservicios
    • - Patrones de diseños y Arquitectura DDD / Hexagonal
    • - Bases de datos relacionales (DB2) y no relacionales (MongoDB)
    • - Trabajando en equipo
    Spring boot Angular Software Architecture BDD MongoDB

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Formación

  • Professional Certificate (SFPC)
    Scrum Foundation
    Professional Certificate (SFPC)
  • Ingeniería
    Universidad Tecnológica José Antonio Echeverria (CUJAE)
    2015
    Ingeniería

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