You will get Fix or improve a Java Spring Boot API or integration
Project details
I will help fix or improve one defined Java Spring Boot API or integration issue in an existing application.
This can include fixing one REST API endpoint, improving request/response handling, adjusting data mapping, adding validation, improving error handling, or troubleshooting one external API connection.
I focus on practical back-end maintenance work: clear scope, readable code, safe changes, and a short summary of what was changed. This project is best for specific API or integration improvements, not for building a full new system from scratch.
This can include fixing one REST API endpoint, improving request/response handling, adjusting data mapping, adding validation, improving error handling, or troubleshooting one external API connection.
I focus on practical back-end maintenance work: clear scope, readable code, safe changes, and a short summary of what was changed. This project is best for specific API or integration improvements, not for building a full new system from scratch.
Programming Languages
JavaScript, Java, TypeScriptCoding Expertise
Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$40
|
Standard
$90
|
Advanced
$160
|
|---|---|---|---|
| Delivery Time | 2 days | 4 days | 6 days |
Number of Revisions | 1 | 1 | 2 |
Design Customization | - | - | - |
Content Upload | - | - | - |
Responsive Design | - | - | - |
Source Code | - |
Frequently asked questions
About Andrus
Java Backend Developer | Spring Boot | Maintenance & Bug Fixes
Tartu, Estonia - 10:02 am local time
I can help with both existing Java/Spring Boot systems and new development work, including APIs, integrations, business logic, database-backed features, internal tools, and full-stack features when needed.
* Java, Spring Boot, APIs, integrations, SQL databases, Git, Docker, and front-end work when needed
* Experience with business applications, back-end services, database work, internal workflows, and practical feature development
* Can help build new features, improve existing applications, fix bugs, refactor code, clean up APIs, and support legacy Java/Spring systems
* Full-stack experience when needed, including Angular, but my main focus is Java/Spring back-end work
* Available for defined tasks, ongoing hourly work, and longer-term support
* I work best with clear written communication, task descriptions, and regular async updates
Steps for completing your project
After purchasing the project, send requirements so Andrus can start the project.
Delivery time starts when Andrus receives requirements from you.
Andrus works on your project following the steps below.
Revisions may occur after the delivery date.
Review the issue
I will review the provided details, code, logs, and API/integration behavior to understand the problem and confirm the safe scope.
Apply the fix or improvement
I will make the agreed defined API or integration change, such as fixing request handling, mapping, validation, or error handling.