I will write complex sql queries, optimize databases, and model your data

Brazil

I speak English, Portuguese, Spanish

Data Engineer

Senior Data Engineer with 4+ years building production ETL pipelines, data warehouses, and large-scale data processing systems using Python, PySpark, and SQL on AWS. Most recently, I designed and buil...
About this Gig

Senior Data Engineer with expert-level SQL across PostgreSQL, MySQL, Oracle, and SQL Server. I'll write, optimize, and fix your queries, design schemas, and model your data for performance.


What I offer:

  • Complex SQL query writing
  • Query performance optimization
  • Database schema design
  • Data modeling (Star Schema, dimensional, 3NF)
  • Stored procedures and views
  • Data migration between databases

Database type:

Centralized database

Distributed database

Platform:

BigQuery

MongoDB

PostgreSQL

Redshift

Expertise:

Big data

Data structure

Normalization

SQL

My Portfolio