Christos Chatzis

Christos Chatzis

Senior Big Data Technology Manager

Cholargos, Greece
About

I lead engineering teams and build the systems, practices, and technical direction behind real-time big data analytics, machine learning, and AI. My work connects technology with business goals while improving developer experience, engineering excellence, and data-driven decision-making. I also mentor engineering leaders, speak at conferences, write about leadership, and build communities for people growing in technology.

Currently

Senior Big Data Technology Manager at Kaizen Gaming

Available for
Selected work

Cloud Data Lake 2.0

I explored how Kaizen Gaming redesigned its cloud data architecture through scalable Data Landing Zones, automated infrastructure, FinOps, centralized governance, phased migration, Delta Sharing, and Databricks Asset Bundles.

Kafka-Storm Integration

I built a Java stream-processing project using Storm, Kafka, and Espertech, with Avro serialization and a KafkaSpout connected to a schema registry.

Analytics on PII Data

I explored dynamic row- and column-level security for sensitive data in Databricks, including identity-based policies, permission groups, organizational hierarchies, encrypted data, and adaptive dashboards.

The Team Lactate Threshold

I wrote about how lessons from sports can inform engineering leadership, including how some friction can signal team adaptation and growth.

Built not Invented

I shared the story of creating and developing LeadDev Athens as an engineering leadership community.

Writing

The Team Lactate Threshold

I explore how lessons from sports can inform engineering leadership, including how some friction can signal team adaptation and growth.

Speaking

Kaizen's Cloud Data Lake 2.0

I spoke about redesigning Kaizen Gaming's cloud data architecture through scalable landing zones, automated infrastructure, FinOps, governance, phased migration, Delta Sharing, and Databricks Asset Bundles.

The Paradox of Analytics on PII Data

I spoke about dynamic row- and column-level security for sensitive data in Databricks and how identity, permissions, encryption, and organizational hierarchies can shape what viewers see.

Work Background

Sr Technology Manager at Kaizen Gaming

Athens, Attiki, Greece

Associate Director of Engineering at Orfium

BBA SDAN - SW Engineer at Nokia

Athens, Greece

SW Developer at Nokia Networks

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