Stelios Zacharoudakis

Head Engineer focused on real-time, data-intensive systems, API platforms, machine learning workflows, and production observability.

Location: Cyprus / Greece Domain focus: fraud, AML, ledgers, data platforms Core stack: Python, FastAPI, Postgres, Docker, Prometheus, Grafana

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Experience Highlights

Lead engineer for production-grade systems with real-time scoring and monitoring flows.
Design and delivery of API-first architectures with testing, metrics, and operational runbooks.
Hands-on delivery across backend, data pipelines, and frontend command-center dashboards.

Featured System Impact

Graph Fraud Command Center: graph-aware fraud telemetry, alert workflows, simulation controls.
Realtime Fraud Guard: low-latency scoring across payments/SMS/email with API and metrics endpoints.
DoubleX Ledger: serializable posting model, reconciliation flow, and observability-first operations.
NYC Subway Anomaly Detection: streaming anomaly detection with live map command center.