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I will design your mysql or postgresql database and fix queries
Full Stack Developer
Full-stack developer with experience building complete web applications, from the database to the user interface. I work with React, Node.js, TypeScript and PostgreSQL/Supabase.
I built a donation-ma...
About this Gig
Need a database designed, a query written or an error fixed? I work with MySQL and PostgreSQL, and I explain every change so you understand it.
What I can do:
- Design your database from scratch: tables, relationships, keys and an ERD diagram
- Write SQL queries: joins, filters, aggregations and reports
- Fix broken queries and database errors, and explain the cause
- Create stored procedures and improve slow queries
- Review your tables and relations and document the changes
How it works:
- Tell me what you need, your database type and any code or error message.
- I confirm the scope and price before starting.
- I deliver the solution with notes so you can reuse it.
About me: junior full-stack developer from Mexico. I've designed relational databases for a construction management system and for a nonprofit's web app.
Please don't send real customer data or passwords. Sample or anonymized data is enough.
Not sure which package fits? Message me before ordering.
Database type:
Centralized database
•
Relational database
Platform:
MySQL
•
PostgreSQL
Expertise:
Design
•
ERD
•
Normalization
•
SQL
My Portfolio
FAQ
What do I need to send you to get started?
Your database type (MySQL or PostgreSQL), the query or error message, and what result you expect. For a new design, a short description of what the database must store.
Which databases do you work with?
MySQL and PostgreSQL. If your project needs Supabase features like login, file storage or security policies, I have a separate Supabase backend gig. For anything else, message me first and I'll tell you honestly if I can help.
Do you need access to my live database?
No. I prefer a copy, a schema export or sample data, never production passwords. I work on the copy and send you the solution.
What if I have more than one problem?
Choose the package that matches the number of issues, or add Additional Fix for each extra one. If you're not sure, message me and I'll recommend one.
Can you speed up a slow database or build a new one from scratch?
Yes to building a new one, and to improving slow queries. I don't do server tuning or infrastructure work.
