Hey👋, I'm Stefanos Tzortzoglou
Στέφανος Τζώρτζογλου
I build the enterprise integrations most CSMs escalate
Technical Customer Success Manager | SQL, REST APIs, CDP & CRM/ERP integrations | Stockholm
Enterprise onboarding stalls on the same three things: an API nobody documented, a schema that does not match the one it has to feed, and a field nobody can define. I write the SQL, configure the API integrations, map the CRM/ERP data, and get the customer live, bringing developers in only when something new has to be built.
Currently a Technical Customer Success Manager at Data Talks. Get in touch.
Technical Customer Success
What I do
I run enterprise onboarding and implementation delivery, kickoff to go-live, for 40+ sports clubs, leagues and federations so far. The integrations that decide whether a customer renews are the ones I work out myself. I start from the customer's commercial goals and work inside their own data until the integrations meet them.
Technical Execution
SQL, REST APIs, and CRM/ERP data mapping.
Renewals
Integrations that keep working, so the renewal conversation starts from results.
Delivery
Scope, milestones and dependencies, with the provider meetings run myself.
Analytics & Segments
Identity resolution, dashboards, and teams that build their own segments.
Selected Case Studies
Global Ticketing API Mapping
Reverse-engineered undocumented API logic for a global ticketing platform, so its event data could be standardised without breaking the systems already reading it.
US Sports League: Protecting Minors' Data
Designed the identity resolution and a "Parent/Guardian" entity model for a US league's youth network, so marketing reached authorised adults while minors' data stayed siloed.
Segmentation Engine Migration
Built an AI toolkit that rebuilds each customer's segments on a new engine through the platform's API, so a migration now needs only a planning phase.
Talk to me about an integration
I do this work at Data Talks, across enterprise accounts. Write to me about an integration, or about anything else.
Get in touch