You will get Fix your REST API issue in Spring Boot (fast and reliable)
Project details
If your Spring Boot REST API is not working as expected, returning errors, or needs a quick improvement, I can help.
I specialize in REST API troubleshooting and small Spring Boot tasks that require fast, reliable solutions.
This service is ideal for fixing specific issues without the need for a long-term project or full-time support.
What I can fix or improve for you:
• Failing or slow endpoints
• 4xx/5xx HTTP errors
• Serialization / JSON mapping issues
• Authentication problems (JWT, Basic Auth, custom filters)
• Controller bugs
• Service-level exceptions
• Microservice communication problems
• Small refactoring or cleanup
• Adding a new simple endpoint
You will receive a clean, working fix, with explanations and suggestions if needed.
I specialize in REST API troubleshooting and small Spring Boot tasks that require fast, reliable solutions.
This service is ideal for fixing specific issues without the need for a long-term project or full-time support.
What I can fix or improve for you:
• Failing or slow endpoints
• 4xx/5xx HTTP errors
• Serialization / JSON mapping issues
• Authentication problems (JWT, Basic Auth, custom filters)
• Controller bugs
• Service-level exceptions
• Microservice communication problems
• Small refactoring or cleanup
• Adding a new simple endpoint
You will receive a clean, working fix, with explanations and suggestions if needed.
Programming Languages
JavaCoding Expertise
DesignWhat's included $60
These options are included with the project scope.
$60
- Delivery Time 2 days
- Number of Revisions 1
Optional add-ons
You can add these on the next page.
Fast 1 Day Delivery
+$30Frequently asked questions
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AH
Alia H.
Dec 1, 2025
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About Michele
API Specialist | REST API Fixes | Spring Boot
Civitanova Marche, Italy - 4:03 pm local time
I help businesses fix, improve, and design REST APIs and microservices quickly and reliably.
I combine strong API architecture experience with hands-on Java Spring Boot skills—perfect for small tasks, improvements, and technical guidance.
💼 What I Can Do for You (Perfect for Small Projects):
• Fix or improve REST API endpoints
• Troubleshoot Java Spring Boot issues
• Add small features or refactor microservice components
• Improve API performance or reliability
• Review and rewrite API documentation
• Provide architectural guidance (1h–3h micro-consulting)
🛠 Why Clients Choose Me:
I bring years of experience in enterprise-level API design and microservices, but I work on Upwork specifically for small, focused tasks that need a clear, structured, fast solution.
🎯 Ideal Projects:
• Java Spring Boot bug fixes
• API troubleshooting
• Microservice improvements
• Technical writing: API docs, design specs, architectural notes
• Short consulting sessions to solve specific technical issues
✨ My Promise:
Clear communication, fast turnaround, and high-quality work, even on small budgets and short engagements.
If you need a reliable developer or API specialist for a quick task or a short project, I’m ready to help. Let’s work together!
Steps for completing your project
After purchasing the project, send requirements so Michele can start the project.
Delivery time starts when Michele receives requirements from you.
Michele works on your project following the steps below.
Revisions may occur after the delivery date.
I reproduce the issue and confirm the scope
I run your project locally, verify the bug, and confirm that the fix is included in the agreed scope.
I implement the fix and test the API
I locate the root cause, apply the fix, and test the REST API to ensure everything works as expected.