Rubén Guerrero

I’m a Fullstack Software Engineer with hands-on experience building SaaS platforms, secure business systems, and operational automation tools. I bring a strong security and governance foundation through ISO/IEC 27001 compliance, identity and access governance, and secure workflow automation.

In my work, I designed and developed a production-ready multi-tenant SaaS platform for dental clinic operations. I implemented secure authentication, onboarding workflows, RBAC, and tenant isolation architecture, then deployed and maintained the system using Vercel and Supabase. I also built scheduling and inventory-aware validation workflows with Python and Power Automate, supported scalable architecture with Next.js, TypeScript, Prisma, and PostgreSQL, and used Power BI to structure reporting.

I’m equally comfortable translating security requirements into working software. As an intern at Kia Mexico, I supported ISO/IEC 27001 audit readiness, reviewed policies, and operated identity and access governance under least-privilege principles while documenting security incidents and performing phishing analysis with Microsoft Defender. I continue to grow through projects like a Next.js incident management system (with RBAC and audit-ready exports) and a mindset focused on analytical thinking, attention to detail, and dependable security.