Francisco Costantino

Senior Backend Developer specialized in Oracle PL/SQL with experience working on enterprise banking systems and high-volume transactional environments.

Currently working remotely for Santander Bank, participating in the development, optimization and support of critical backend systems based on Oracle technologies.

My expertise includes:

• Oracle PL/SQL development

• Complex SQL and query optimization

• Performance tuning using Explain Plan

• Development of procedures, packages, functions and triggers

• Production support and troubleshooting

• Data integration and transformation

• UNIX/Linux environments and shell scripting

• Backend process automation

• SDLC and agile methodologies

I help companies maintain, optimize and scale critical database-driven applications with focus on performance, stability and reliability.

Available for:

• Remote consulting

• Freelance projects

• Long-term contractor roles

• Full-time remote opportunities

Based in Argentina — available for international remote collaboration.