Oracle Database Consultant at ISYC (1999–2006). Business intelligence, data warehousing, and analytical solutions for enterprise clients during the early BI adoption phase. This is where everything started.

The Context #

Y2K era. Companies discovering what data warehousing could do for them. Internet growth demanding reliable, scalable systems. Oracle expertise was rare and highly specialized. The job meant working alongside large consulting firms on enterprise telecommunications accounts – learning what enterprise IT looks like from the inside.

What I Did #

Oracle and business intelligence. Oracle (8, 8i, 9i) administration and performance tuning for analytical workloads. Built data warehouses with dimensional models supporting dashboards and reporting. ETL optimization from mainframe systems to modern BI platforms.

Consulting across industries. Large enterprise clients in telecommunications as primary accounts. Every engagement was a different business, a different problem, a different set of constraints. Converting technical database concepts into business value was the daily work.

Lessons Learned #

1. Working with the big players sets the standard. Large consulting firms, enterprise telecoms – early exposure to enterprise discipline shaped how I approach problems, documentation, and delivery. Good habits learned early compound over a career.
2. Consulting is a crash course in adaptability. Every day a different challenge, a different business domain, a different client expectation. That pace built a problem-solving versatility that no single-company role could have.
3. Certifications and fundamentals matter at the start. Oracle certifications, distributed systems principles, structured methodologies – they gave a foundation solid enough to build 25 years on top of.