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Fiverr Pro
English
$
USD
I will build rest apis, fix java or laravel backend issues, and optimize sql queries
Guzmán P
About this gig
Looking for a reliable backend developer to fix an issue, build an API endpoint, or optimize your database queries? You are in the right place.
I specialize in backend development, API integration, and SQL database optimization using Java (Jakarta EE / Spring) and PHP (Laravel).
WHAT I CAN DO FOR YOU:
- Build clean and secure RESTful APIs (JSON responses, status codes, proper validation).
- Debug and fix Java or Laravel runtime exceptions, logic bugs, and build errors.
- Optimize slow PostgreSQL / MySQL queries, write complex JOINs, or fix database schemas.
- Integrate 3rd party APIs and Webhooks into your existing application.
- Provide Postman collections or clear documentation for testing.
WHY WORK WITH ME?
- Clean, well-structured, and fully tested code.
- Clear and transparent asynchronous communication.
- Fast delivery focused on effective solutions.
PLEASE NOTE:
To keep work efficient, please contact me before placing an order with your code snippets, repository access, or exact requirements.
Get to know Guzmán P
Guzmán P
- FromUruguay
- Member sinceJan 2025
Languages
Spanish, English
Full-Stack Software Engineer specializing in backend, frontend, and system debugging.
Tech Stack:
- Backend & DB: Java (Jakarta EE), PHP (Laravel), Node.js, C++, PostgreSQL, MySQL.
- Frontend: Vue.js, Angular, JavaScript, HTML5/CSS3, Tailwind CSS.
- DevOps & Infra: Docker, Nginx, Linux/Bash, API integration.
How I work:
- Clean, well-tested code & clear documentation.
- 100% asynchronous workflow (no live calls needed).
Need a quick bug fix, SQL optimization, or API fix? Check my Gigs or message me with your project details!
Other Software Development Services I Offer
FAQ
Do I need to contact you before placing an order?
Yes, please message me first with your repository access, code snippet, or detailed requirements. This ensures I can confirm scope, feasibility, and delivery time before you order.
How do we communicate during the project?
All communication is handled asynchronously via Fiverr messages. You won't need to coordinate live calls or meetings; just leave your project files and instructions, and I will deliver the completed work directly.
What technology stack do you support for backend development?
I specialize in Java (Jakarta EE, Spring) and PHP (Laravel), alongside SQL databases like PostgreSQL and MySQL.
What if my bug or task requires more time than estimated?
If after reviewing your code I see the task requires a larger scope, I will send you a custom offer tailored specifically to the complexity of your project before any work begins.
