Stefanos Tzortzoglou

Hey👋, I'm Stefanos Tzortzoglou

Technical Customer Success Manager | Implementation Lead | SQL, APIs & Data Strategy

I bridge the gap between commercial goals and technical reality. I don't just manage accounts; I get my hands dirty with SQL, API integrations, and CRM/ERP data mapping to solve the technical blockers that others escalate.

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Technical Customer Success

Bridging Commercial Strategy & Technical Reality

I sit at the intersection of revenue and code. I don't just manage accounts; I fix the technical blockers that prevent renewals. I build the solutions that ensure customers see value—without waiting on Engineering.

Technical Execution

SQL, REST APIs, and complex data mapping.

Revenue Protection

Turning technical adoption into secured ARR.

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Selected Case Studies

API Architecture

Global Ticketing API Mapping

Reverse-engineered legacy API logic for a global ticketing giant to standardize millions of event data points without breaking dependencies.

JSON Data Mapping

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Enterprise Governance

Fortune 500 Data Lake Strategy

Designed a GDPR-compliant "Parent/Guardian" entity model for a Fortune 500 client, enabling safe marketing to sensitive "non-adult" segments.

Privacy ETL

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Automation

Technical Utility Scripts

A collection of automation tools and API experiments demonstrating continuous learning and problem-solving capabilities.

JS Python

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