You will get a clean Java REST API built or fixed with Spring Boot and PostgreSQL
Project details
If you need a reliable backend API, I can build it from scratch or fix what's already broken. I work with Java 17-21 and Spring Boot, writing clean, well-structured code that's easy to maintain and scale.
My focus is on practical delivery: REST endpoints that follow best practices, proper database integration with PostgreSQL, and code you'll actually understand after I'm done.
I'm a Java backend developer currently building real-world projects, so I take every order seriously. No copy-paste solutions, no bloated code.
Contact me before ordering so we can align on scope and I can make sure I deliver exactly what you need.
My focus is on practical delivery: REST endpoints that follow best practices, proper database integration with PostgreSQL, and code you'll actually understand after I'm done.
I'm a Java backend developer currently building real-world projects, so I take every order seriously. No copy-paste solutions, no bloated code.
Contact me before ordering so we can align on scope and I can make sure I deliver exactly what you need.
Programming Languages
JavaCoding Expertise
Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$25
|
Standard
$70
|
Advanced
$130
|
|---|---|---|---|
| Delivery Time | 2 days | 3 days | 5 days |
Number of Revisions | 1 | 2 | 3 |
Design Customization | - | - | - |
Content Upload | - | - | - |
Responsive Design | - | - | - |
Source Code |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$15 - $35
Additional Revision
+$15
Additional Endpoint
(+ 1 Day)
+$20
API Documentation
(+ 1 Day)
+$25Frequently asked questions
About Otavio
Java Back-end Developer
Suzano, Brazil - 3:34 am local time
I have hands-on experience developing RESTful APIs from scratch, improving existing systems, and solving production issues. Recently, I built a multi-tenant gamification platform featuring dual authentication (JWT + API Key), asynchronous webhooks with retry logic, and ranking systems.
What I do best:
- Develop and maintain REST APIs with Java and Spring Boot
- Design scalable and well-structured backend architectures
- Work with SQL databases (PostgreSQL)
- Write clean, testable code (JUnit, Mockito)
- Containerize applications using Docker
- Debug and optimize existing systems
I’m comfortable working independently and taking ownership of backend projects, from planning to deployment.
Currently, I’m looking for opportunities as a junior developer or freelance projects where I can deliver solid backend solutions and keep growing as an engineer.
Steps for completing your project
After purchasing the project, send requirements so Otavio can start the project.
Delivery time starts when Otavio receives requirements from you.
Otavio works on your project following the steps below.
Revisions may occur after the delivery date.
Requirements Review
I'll analyze your project needs, clarify any doubts, and confirm the scope before starting.
Development
I'll build or fix the API using Java and Spring Boot, following clean code and REST best practices.