Senior Oracle PL/SQL Developer (15+ Years)

Marcelo Izquierdo

Charlotte, NC *****

704-***-**** ********@*******.***

linkedin.com/in/marcelo-izquierdo-abb84b42

Professional Summary

Senior Oracle Developer with over 15 years of experience in PL/SQL development, Oracle Forms & Reports, and database performance optimization. Proven success in designing and delivering enterprise-level solutions across banking, military, and retail sectors. Strong background in full project lifecycle, data modeling, and cross-functional team leadership.

Technical Skills

• Databases: Oracle 9i, 10g, 11g, 12c, 19c

• Development Tools: Oracle Forms & Reports 6i/10g/11g, PL/SQL Developer, Git, Erwin

• Languages: PL/SQL, Unix Shell, PERL, Python

• Data Handling: Data modeling, schema design, performance tuning, Explain Plan, indexing

• Productivity: Excel (Power Query, Pivot Tables, VLOOKUP) Professional Experience

Carrer Break – Jul 2024- Current

• Since completing my last project in July 2024, I have not been working due to urgent family matters. I had to travel immediately to my home country, Ecuador, following the unexpected passing of my brother. I returned 3 months ago and I am now actively seeking new job opportunities.

Oracle Developer – ESFORSE (Remote) Feb 2020 – Jul 2024

• Developed key modules (Psychological Testing, Military Assignment) using Oracle Forms and Reports, and PL/SQL Developer.

• Improved query performance by 35% using indexing, Explain Plan analysis, and bulk operations; optimized database structure through normalization and ER diagram modeling; utilized TOAD for development, query tuning, and performance diagnostics.

• Managed full lifecycle development, including schema design and deployment.

• Automated reporting and backup tasks using PL/SQL scripts.

• Used Git for database version control.

Oracle Developer – CrownPawnShop / MACOSA (Freelance) Jan 2014 – Jan 2020

• Designed and maintained Oracle Forms applications and PL/SQL Developer.

• Created new schema and data models for rental system at MACOSA-AVIS.

• Automated backups with PERL scripts on UNIX.

• Generated Excel reports using Power Query and .CSV exports. Oracle Developer – Crown Pawn Shop, NY Dec 2011 – Dec 2013

• Created and maintained Oracle database objects (views, triggers, procedures, etc.)

• Focused on performance and reporting optimization. Project Leader / Oracle Developer – Pichincha Bank, Ecuador Nov 2006 – Nov 2011

• Led Oracle projects for the bank’s international division.

• Delivered training on Oracle Forms & Reports.

• Performed extensive PL/SQL optimization.

Oracle Developer – Kruger Corporation, Ecuador Mar 2006 – Oct 2006

• Migrated banking system to Oracle Forms 10g and Oracle DB 10g.

• Reengineered database using Erwin for optimized performance. Head of Data Processing – Police Academy, Ecuador Mar 2004 – Feb 2006

• Maintained and developed internal Oracle systems.

• Built new modules to support operational growth. Founder & Developer – MIRABSOFT Systems, Ecuador Mar 2003 – Feb 2004

• Created academic management system used by military and police institutions.

• Handled end-to-end development and client implementation.

• Developed in Oracle Forms and Reports. Oracle DB. Oracle Developer – GESTORINC, Ecuador Feb 1998 – Feb 2003

• Designed and implemented financial modules (Assets, Trust, Dividends).

• Deployed systems in Venezuela and Peru. Developed in Oracle Forms and Reports

• Led data analysis for executive reporting. Oracle DB. Education

• Systems Analyst (3 years) – Universidad del Azuay, Cuenca, Ecuador

• Bachelor degree (2 years) – Universidad Politécnica Javeriana, Quito, Ecuador Certifications

• Oracle 11g SQL Fundamentals I (1Z0-051) – 2015

• Python Programming Specialization – University of Michigan (2022–2023)

• Oracle Apex course (2024)

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