I will write sql queries, database scripts and optimize database design

Colombia

I speak Spanish, English

Software Developer and IT Support Specialist

I am a Software Developer and IT Support Specialist with over 2 years of experience managing service desks, optimizing relational databases, and troubleshooting applications in production environments...
About this Gig

Are you struggling to get the exact data you need from your database? Do you need optimized, clean, and fast-running SQL queries for your business reports or backend application? I am here to help!

I am a backend and database developer specializing in relational database systems like MySQL and PostgreSQL. Whether you need to extract complex information for data analysis, fix a broken script, or design a clean database schema from scratch, I will deliver production-ready SQL code tailored to your exact needs.

What I can do for you:

  • Write complex SQL queries (SELECT, INSERT, UPDATE, DELETE).
  • Multi-table relationships using advanced JOINs, subqueries, and CTEs.
  • Data aggregation and grouping for business intelligence and reporting.
  • Create custom database Views, Functions, and Stored Procedures.
  • Optimize slow-running queries to improve your application's performance.
  • Design and normalize database schemas (tables, primary/foreign keys).

Why work with me?

  • Clean & Well-Commented Code: Easy to understand and maintain.
  • Performance Focused: Queries optimized to run fast and save server resources.
  • Accurate Data: Strict attention to detail to ensure your reports match your business logic.

Database type:

Relational database

Platform:

MariaDB

MySQL

PostgreSQL

Expertise:

Design

SQL

Query optimization