I will design or optimize a custom database for your business

Argentina

I speak English, Spanish

Software Developer Software Engineer

Hi! I'm Jhonatan, a Computer Science student and software developer. I build reliable, scalable applications with clean architecture, technical documentation and focus on real user needs. I’ve develop...
About this Gig

High-Quality Database Design & Development by a Computer Science Professional

Are you looking for a robust, scalable, and well-structured database for your next application? As a 4th-year Computer Science student, I combine academic precision with practical development skills to build databases that are not only functional but also optimized for performance and integrity.

I don't just "create tables"I architect data solutions following industry best practices like Normalization (1NF to 3NF) and Clean Code principles.

What I Offer:

  • Database Architecture: Professional Entity-Relationship Diagrams (ERD).
  • SQL Development: Writing optimized DDL (Table creation) and DML (Data manipulation).
  • Complex Queries: Advanced Joins, Subqueries, and Aggregations for your reports.
  • Database Objects: Stored Procedures, Views, and Triggers to automate your logic.
  • Normalization: Eliminating data redundancy and ensuring integrity.
  • Bug Fixing: Troubleshooting and refining your existing SQL scripts.

Technologies I Work With:

  • Relational (SQL): PostgreSQL, MySQL, Microsoft SQL Server, MariaDB.
  • Non-Relational (NoSQL): MongoDB, Firebase.
  • Tools: DBVisualizer, MySQL Workbench, pgAdmin, Draw.io


Database type:

Centralized database

Distributed database

Platform:

Firebase

MariaDB

MongoDB

MySQL

PostgreSQL

SQL Server

Expertise:

Design

SQL

NoSQL

My Portfolio