Nelson Douglas Grande Sanchez

Senior Database Administrator and Information Security Professional with over 15 years of experience managing, securing, and optimizing Microsoft SQL Server environments within large government organizations. Possesses extensive expertise in database administration, performance tuning, backup and recovery, security auditing, access control management, disaster recovery planning, and database infrastructure support. Holder of a Master's Degree in Information Security and Cybersecurity, with additional specialized training as an Internal Auditor for ISO/IEC 27001:2022 Information Security Management Systems.

Demonstrates a strong background in implementing enterprise security controls, conducting complex database audits, managing privileged access, and supporting critical compliance initiatives. Actively seeking remote opportunities in Database Administration, Database Security, Cybersecurity Operations, Information Security Governance, or Infrastructure Security.

Senior SQL Server Database Administrator - Ministry of Public Works - El Salvador

(2011-07 - 2026-06)

• Administered and maintained robust Microsoft SQL Server database environments supporting mission-critical nationwide government operations.
• Managed multi-level database security architectures, handling user permissions, role definition, and strict access controls.
• Formulated and executed reliable backup, recovery, and failover disaster recovery strategies to safeguard organizational business continuity.
• Developed, optimized, and refactored highly efficient stored procedures, user-defined functions, views, and automated T-SQL scripts.
• Performed regular database performance monitoring, diagnostic log reviews, and precise query index tuning.
• Conducted formal periodic database security reviews, threat profiling, and comprehensive internal access audits.
• Supported structural database migrations, major platform upgrades, and preventive infrastructure maintenance activities.
• Managed SQL Server Agent job architectures, building automated workflows for routine administrative processes.
• Collaborated with cross-functional software application development teams to effectively troubleshoot and resolve complex database-related incidents.
• Successfully supported critical database systems underpinning national infrastructure and high-concurrency public operations.
• Substantially enhanced database processing performance through meticulous query optimization and data-indexing re-strategizing.
• Strengthened the ministry's overall database security layout via rigid access control overhauls and complete user permission reviews.
• Automated recurring database administration tasks, dropping team operational overhead and drastically improving system response times.
• Actively participated in national corporate security initiatives aligned precisely with international information security best practices.

Master's Degree - Information Security and Cybersecurity - Don Bosco University

Bachelor's Degree - Systems Engineering - Francisco Gavidia University