I will optimize slow sql queries performance

TanyaZ

United States

I speak English

Senior Data Engineer, BI and Analytics Engineering, SQL, Python, ETL Pipelines

Services Offered: SQL Optimization: • Query execution plan analysis and index optimization • Identifying and resolving complex database deadlocks and lock contention • Refactoring stored procedures an...
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About this Gig

Is your database slow, lagging, or locking up? As a Senior Data Engineer with 10+ years of experience, I analyze and optimize slow SQL queries, stored procedures, and PySpark scripts for peak performance.

What I Offer:

  • SQL Query Refactoring: Rewriting slow queries, JOINs, CTEs, and subqueries.
  • PySpark Optimization: Tuning DataFrame operations, partitioning, and data transformations.
  • Execution Plan Analysis: Identifying bottlenecks, locking issues, and index gaps.
  • Stored Procedure Tuning: Refactoring inefficient T-SQL/SQL logic.

Technologies Supported:

  • Microsoft SQL Server (T-SQL)
  • MySQL
  • PySpark

Why Work With Me?

  • 10+ years of enterprise data platform engineering experience.
  • Production-safe, clean, and well-documented optimization.

Please contact me before placing an order to discuss your query details and choose the best package for your needs!

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optimize slow sql queries performance
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optimize slow sql queries performance

Database type:

Relational database

Platform:

Db2

•

MS SQL

•

MySQL

•

SQL Server

Expertise:

Data warehouse

•

SQL

•

Performance

•

Query optimization

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