Oleksandr V.

Expert Oracle & SQL Database Developer | Schema Design & Performance Tuning With 24+ years of experience in database engineering, I specialize in Oracle PL/SQL, PostgreSQL, and MySQL development. I design complex schemas, build and optimize procedures, packages, and triggers, and deliver high‑performance solutions for enterprise‑scale systems in billing, CRM, and financial domains. My work has included full database migrations, query optimization for millions of records, and partitioning strategies that ensure scalability and reliability. 🔹 Key Expertise: ✅ Oracle PL/SQL, PostgreSQL, MySQL ✅ Schema Design, Query Optimization, Partitioning ✅ ETL Development, Data Migration, API Integrations ✅ Reporting Tools & Custom Data Solutions ✅ Enterprise Systems in Finance, Telecom, and SaaS Clients value my ability to deliver precise, efficient, and reliable database solutions that support mission‑critical processes. I am available for both short‑term consulting and long‑term development projects.