I will write, optimize or fix your sql queries and database scripts

Fernando S

Brazil

I speak English, Spanish, Portuguese

Senior Data Analyst

I am a Senior Business & Analytics professional with a proven track record at IBM, specializing in data integrity, complex financial systems, and sales commissions. I bridge the gap between deep busin...
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About this Gig

Are you struggling with slow database queries, broken SQL scripts, or complex data extraction? I am here to deliver fast, reliable, and optimized SQL solutions for your business.

As a Systems Operations Analyst specializing in Data Analytics, I offer hands-on expertise in database management, query tuning, and automated data workflows.

What I can help you with:

  • Custom SQL Queries: Writing clean, efficient SQL scripts from scratch (SELECT, JOINs, Subqueries, Aggregations).
  • Query Optimization: Fixing slow database queries to improve performance and execution speed.
  • Database Debugging: Troubleshooting and fixing syntax, logic, or relational errors.
  • Data Extraction & ETL: Structuring data for reporting, API integrations, and database migrations.
  • Automation: Scheduling scripts and recurring database tasks.

Supported Databases: PostgreSQL, MySQL, SQL Server, SQLite, and Oracle.

Why choose me? High-performance, clean, and well-commented code. Fast turnaround time and clear communication. Focus on data integrity and accuracy.

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write, optimize or fix your sql queries and database scripts
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write, optimize or fix your sql queries and database scripts

Database type:

Relational database

Platform:

Db2

•

MySQL

•

PostgreSQL

Expertise:

SQL

•

Performance

•

Query optimization

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