Daniel Ciglione De Oliveira

Senior Oracle Database Administrator with 15+ years of experience managing mission-critical systems across global enterprises. Currently serving as Primary DBA for T-Mobile's Wholesale database (120+ TB) and Post-paid services, ensuring 99.9%+ uptime for critical payment infrastructure.

CORE EXPERTISE:

• Oracle Database Administration (8i through 19c/21c)

• High Availability: RAC, Data Guard, GoldenGate

• Cloud Infrastructure: Oracle Cloud Infrastructure (OCI)

• Performance Tuning & Optimization

• Database Architecture & Migration

PROVEN TRACK RECORD:

Managed 1000+ Oracle databases across international operations for Fortune 500 companies including Cargill's global infrastructure. Successfully migrated 80% of enterprise database estate to Oracle 19c and Exadata platform. Delivered R$600K+ cost savings through performance optimization initiatives.

GLOBAL EXPERIENCE:

Led database operations across 6+ countries (USA, Colombia, Argentina, Mexico, Brazil, India, Netherlands), coordinating with international teams and managing complex multi-regional database architectures.

MODERN SKILLS:

Recently completed Bachelor's degree in Data Science (2024), combining traditional DBA expertise with modern analytics capabilities including Python, R, Machine Learning, and statistical analysis. This unique combination allows me to bridge traditional database administration with cutting-edge data engineering and analytics.

TECHNICAL LEADERSHIP:

Served as Technical Change Coordinator for Global Database Technical Services team, participating in bi-weekly Change Advisory Board meetings with technology leaders. Experienced in crisis management and rapid response for financially critical systems.

KEY ACHIEVEMENTS:

• Primary DBA for 120+ TB enterprise systems

• Planned and executed 2-Node to 3-Node RAC migration with zero downtime

• Implemented automated table maintenance using INTERVAL partitioning

• Specialized in Terabyte-scale JD Edwards environments

• Expert in disaster recovery and business continuity planning

I excel at delivering enterprise-grade database solutions that ensure optimal performance, security, and availability while enabling business growth through reliable data infrastructure.