Luis Francisco Sierra Ropero

Senior Backend Architect & Legacy Migration Specialist

Senior Backend Architect with 4+ years enterprise experience. Specialist in Legacy System Modernization (VB6/VBA to Laravel), Database Hardening (PostgreSQL/Oracle), and SaaS Architecture on Oracle Cloud Infrastructure. Delivers complete technical documentation including Swagger/OpenAPI specs. Oracle Certified. Case study: 90% query time reduction via PostgreSQL partitioning.

Core Expertise (Architect Level)

  • Legacy System Modernization & Technical Debt Refactoring
  • Database Hardening: 3FN Boyce-Codd, PostgreSQL Tuning, ACID Compliance
  • Oracle Cloud Infrastructure (OCI) Architecture
  • Microservices & High-Availability SaaS Deployment
  • API Design with Swagger/OpenAPI Documentation
  • CI/CD Pipelines & Rollback Strategies

Certifications (Oracle University)

  • Oracle APEX Cloud Developer Certified Professional (2023)
  • Oracle Cloud Infrastructure Foundations Associate
  • Oracle Cloud Data Management Foundations Associate

Contact: LinkedIn: linkedin.com/in/fransierrar