Lead Data Engineer

Alejandro Semprini

Building the data backbone of AlexsemData

Architecting scalable pipelines, migrating complex databases, and crafting intuitive dashboards. From raw data to critical business insights.

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Technical Expertise

SQL & NoSQL

DB Administration

Python

Apache Spark

AWS / GCP

PowerBI

Dashboarding

Airflow

Selected Work

Oracle to SQL Server Migration

Complete database migration project. Transferred critical business data from Oracle to SQL Server, ensuring data integrity and optimizing schema performance. Included a new monitoring dashboard.

Oracle SQL Server Migration

Metabase & Snowflake Stack

Built a modern BI stack from scratch. Engineered ETL pipelines to load Snowflake and deployed self-service analytics dashboards using Metabase for stakeholders.

Snowflake Metabase ETL

Serverless Aviation Data Pipeline

Designed lightweight extractors on AWS Lambda to capture real-time flight info. High-speed ingestion into ClickHouse and visualization via Amazon QuickSight.

AWS Lambda ClickHouse QuickSight

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