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Javi L.JL

Javi L.

Sr. Software Dev - Security, APIs, AI Adoption

€280/day
Barcelona, ES
8-15 years

Average response time: 1 hour

About Javi

I'm a Senior Software Developer with experience in identity and security systems, backend integrations, and API development. I currently work at Entrust, where I build and maintain security-critical software used by enterprises globally.

I help companies with three types of projects:

Security & identity systems: authentication flows, access control, identity management integrations
Backend & API development: clean, well-structured integrations between systems and third-party services
AI adoption consulting: helping development teams identify where and how to integrate AI tooling into their workflows — without the hype
Based in the Barcelona area. Available for part-time remote projects.
  • Spanish

    Native or bilingual

  • Catalan

    Native or bilingual

  • English

    Fluent

Remote only
Primarily works remotely

Experience

  • Entrust
    Senior Software Developer
    SOFTWARE PUBLISHING
    December 2017 - Today (8 years and 6 months)
    Barcelona, Spain
    • Diseño y desarrollo de soluciones de software escalables y de alta calidad.
    • Tomar decisiones técnicas clave y definir arquitecturas robustas.
    • Revisar código (code reviews) para garantizar buenas prácticas y estándares.
    • Guiar y mentorizar a desarrolladores junior y mid-level.
    • Colaborar con equipos multidisciplinares para definir requisitos y prioridades.
    • Identificar y resolver problemas complejos en sistemas existentes.
    • Optimizar rendimiento, seguridad y mantenibilidad del software.
    • Impulsar la adopción de nuevas tecnologías, patrones y herramientas.
    System Architecture Back-End development REST APIs AI Integration Identity and Access Management
  • Psious
    Software Developer
    SOFTWARE PUBLISHING
    January 2015 - December 2017 (2 years and 11 months)
    Barcelona, Spain
    • Desarrollo de webs internas y herramientas de uso corporativo para optimizar procesos internos.
    • Implementación y mantenimiento de portales de administración interna para gestión de usuarios, contenidos y operaciones.
    • Diseño y desarrollo del backend de los servicios comerciales ofrecidos a clientes, garantizando estabilidad, seguridad y escalabilidad.
    • Mejora continua de la arquitectura existente, refactorización y optimización del rendimiento de servicios críticos.
    Full-Stack Development

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