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I will fix and debug spring boot java rest API and backend errors
Sandeep
About this gig
Is your Java or Spring Boot application throwing errors, failing to start, or returning unexpected API responses?
I will diagnose and fix Spring Boot, Java backend, REST API, database, and configuration issues.
I can help with:
Spring Boot startup and ApplicationContext errors
REST API 400, 401, 403, 404 and 500 errors
Spring Security and JWT issues
JPA, Hibernate and MySQL errors
Entity, Repository, Service and Controller problems
Maven dependency and configuration issues
application.properties / application.yml problems
REST API request and response issues
Java exceptions and backend logic errors
Spring AI integration and API configuration issues
Microservice communication problems
What you will receive:
Root-cause investigation
Working code or configuration fix
Clear explanation of the problem
Fix documentation and testing guidance
Packages are designed for different levels of debugging, from one simple error to complex Spring Boot backend issues.
Please provide the relevant project files, complete error/stack trace, expected behavior, actual behavior, and Java/Spring Boot version before I begin.
For large applications, unrelated bugs, new features, or complete application.
Get to know Sandeep
Sandeep
- FromIndia
- Member sinceMay 2023
- Avg. response time1 hour
Languages
English
hey there iam full stack developer skilled node js ,react express,mongo db and python i love creating full stack applications
with smooth user interface experiencefrom building APIs and authentication systems using JWT to crafting responsive frontends with React. I’m passionate about solving problems, writingefficient code, and helping clients bring their ideas to life.
My Portfolio
FAQ
Can you fix Spring Boot application startup errors?
Yes. I can investigate ApplicationContext, bean creation, dependency injection, configuration, Maven dependency, and other Spring Boot startup errors.
Can you fix REST API errors?
Yes. I can troubleshoot common 400, 401, 403, 404 and 500 errors and identify the backend code or configuration causing the problem.
Can you fix Spring Security and JWT problems?
yes. I can debug Spring Security configuration, authentication, authorization, JWT validation, filters, and related backend issues within the agreed package scope.
Can you fix MySQL, JPA and Hibernate errors?
Yes. I can investigate database connectivity, entity mappings, repository problems, SQL queries, Hibernate exceptions, and data-related errors.
Can you debug Spring AI applications?
Yes. I can investigate Spring AI configuration, dependencies, API integration, request handling, and backend integration problems.
Can you build a complete Spring Boot application?
This Gig is focused on debugging and fixing existing applications. For a new application, major feature development, or a large project, please contact me first so I can review the requirements and provide the appropriate scope and pricing.
