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I will fix java spring boot bugs, errors and backend issues
Kamran Abbasi
4.9
4.9
Gig Summary
About this gig
Is your Java Spring Boot application throwing errors, failing to start, returning incorrect API responses, or behaving unexpectedly?
I will debug and fix Java Spring Boot bugs, backend errors, and application issues with a focus on finding the root cause and providing a clean, maintainable solution.
I can help you with:
- Java and Spring Boot errors
- REST API bugs and exceptions
- Spring Data JPA and Hibernate issues
- MySQL and PostgreSQL problems
- Spring Security and JWT errors
- Authentication and authorization issues
- Maven and Gradle configuration
- Application startup and configuration errors
- Integration and third-party API issues
- Unit and integration test failures
- Performance and backend troubleshooting
- Existing code improvements
I focus on identifying the actual cause of the problem rather than applying temporary fixes.
For complex issues or larger existing codebases, please contact me before ordering and share the error details so I can review the scope.
Get to know Kamran Abbasi
Kamran Abbasi
Senior Java Developer, Spring Boot, REST APIs, Microservices
- FromPakistan
- Member sinceJul 2017
- Avg. response time7 hours
- Last delivery9 months
Languages
English, Urdu, Hindi, Turkish, French
Hi, I'm Kamran, a Senior Java Developer specializing in Spring Boot, REST APIs, microservices, and backend application development.
I build secure, scalable, and maintainable Java applications tailored to your requirements.
My expertise includes Spring Boot, Spring Security, JPA/Hibernate, REST APIs, Microservices, MySQL, PostgreSQL, Kafka, Redis, Docker, AWS, and Thymeleaf.
I can help with backend development, API integrations, authentication, databases, debugging, performance optimization, and existing application enhancements.
Let's build a reliable solution for your project.
My Portfolio
Other Software Development Services I Offer
FAQ
What type of Java Spring Boot bugs can you fix?
I can troubleshoot Spring Boot errors, REST API issues, exceptions, database problems, JPA/Hibernate errors, Spring Security issues, configuration problems, integration failures, test failures, and other backend-related bugs.
Can you work with my existing Spring Boot project?
Yes. This gig is specifically designed for troubleshooting and improving existing Java Spring Boot applications. Please provide the relevant source code and details about the issue.
Can you fix REST API errors?
Yes. I can troubleshoot incorrect responses, HTTP errors, exceptions, validation issues, request/response problems, API integrations, and backend business logic.
Can you fix Spring Security or authentication problems?
Yes. I can troubleshoot Spring Security, JWT authentication, authorization, roles and permissions, CORS, and other security-related application issues.
Can you fix database and JPA/Hibernate errors?
Yes. I can troubleshoot MySQL, PostgreSQL, Spring Data JPA, Hibernate, entity relationships, queries, persistence, and database-related exceptions.
Can you fix Maven or Gradle build problems?
Yes. I can investigate dependency conflicts, configuration issues, compilation errors, Maven or Gradle build failures, and related Spring Boot setup problems.
Can you fix failing unit or integration tests?
Yes. I can investigate failing Java and Spring Boot tests, identify the underlying problem, and fix or improve the relevant implementation or test configuration.
Should I contact you before ordering?
For simple and clearly identified issues, you can select the appropriate package. For complex bugs, production issues, large codebases, or problems where the cause is unknown, please contact me first so I can review the scope.
Reviews
10 reviews for this Gig
| (9) | ||
| (1) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
B 
biserapetroska
North Macedonia
From our first conversation, I could see that Kamran has lots of experience and is great at communication. Fixed my bugs fast and helped me with my project. He makes sure that all of the requirements are met, highly recommend working with him.
$50
Price
1 day
Duration
R 
Seller's Response
Helpful?E ea41977
United Kingdom
100% quality!!
$50
Price
3 days
Duration
R Seller's Response
Helpful?C cbarringer1
United States
Kamran quickly fixed all the bugs in my spring boot application. He has fast response times and great attention to detail.
$50-$100
Price
2 days
Duration
R Seller's Response
Helpful?R 
ronniebodinger
Sweden
He was a huge help in fixing our Spring Boot tests and resolving tricky bugs. They quickly identified issues, cleaned up the test structure, and made our codebase much more reliable. Their clear communication and problem-solving skills made a big difference. Highly recommend working with him.
$50
Price
1 day
Duration
R Seller's Response
Helpful?L 
lamdenbrook
Denmark
Thank you very much. This helped. I will try to make it from here.
$50
Price
3 days
Duration
R Seller's Response
Helpful?
Reviews
10 reviews for this Gig
| (9) | ||
| (1) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
B biserapetroska
North Macedonia
From our first conversation, I could see that Kamran has lots of experience and is great at communication. Fixed my bugs fast and helped me with my project. He makes sure that all of the requirements are met, highly recommend working with him.
$50
Price
1 day
Duration
R Seller's Response
Helpful?E ea41977
United Kingdom
100% quality!!
$50
Price
3 days
Duration
R Seller's Response
Helpful?C cbarringer1
United States
Kamran quickly fixed all the bugs in my spring boot application. He has fast response times and great attention to detail.
$50-$100
Price
2 days
Duration
R Seller's Response
Helpful?R ronniebodinger
Sweden
He was a huge help in fixing our Spring Boot tests and resolving tricky bugs. They quickly identified issues, cleaned up the test structure, and made our codebase much more reliable. Their clear communication and problem-solving skills made a big difference. Highly recommend working with him.
$50
Price
1 day
Duration
R Seller's Response
Helpful?L lamdenbrook
Denmark
Thank you very much. This helped. I will try to make it from here.
$50
Price
3 days
Duration
R Seller's Response
Helpful?
