Moisés Varela lopez's Work | ContraWork by Moisés Varela lopez
Moisés Varela lopez

Moisés Varela lopez

Ex-Goldman Sachs analyst. SQL & data for fintech.

New to Contra

Moisés is ready for their next project!

Cover image for Production SQL using cascading CTEs
Production SQL using cascading CTEs and Window Functions to detect fraud signals — the same query patterns used in real financial operations environments.
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Cover image for Financial analytics dashboard showing real-time
Financial analytics dashboard showing real-time KPIs: transaction volume, fraud rate, and revenue metrics. Built on top of complex SQL pipelines running against 50K+ financial records.
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Cover image for High-performance financial data ecosystem with
High-performance financial data ecosystem with automated ETL pipelines, credit score modeling, and AML anomaly detection. Built end-to-end in Python and PostgreSQL — ingests raw financial data, cleans it, and flags suspicious transactions using patterns from my Goldman Sachs experience. Stack: Python · PostgreSQL · dbt.
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Cover image for End-to-end financial analytics dashboard tracking
End-to-end financial analytics dashboard tracking transaction volume, fraud rate, and account activity in real time. Built to give operations teams instant visibility into key risk metrics — the same type of monitoring I worked with at Goldman Sachs.
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