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I will fix bugs and errors in your java spring boot application
yunian wang
About this gig
Are you facing bugs, errors, or unexpected issues in your Java Spring Boot application?
I can help you identify the root cause and fix problems in your existing backend project.
I can help with:
- Java bugs and exceptions
- Spring Boot errors
- Application startup issues
- REST API problems
- MySQL database issues
- MyBatis and MyBatis-Plus issues
- Maven dependency problems
- JSON serialization and request/response errors
- Configuration issues
- Third-party API integration problems
I will first analyze the issue, identify the cause, and provide a clean solution. For more complex problems, I will communicate with you before starting.
Please contact me before placing an order for complex projects.
Get to know yunian wang
yunian wang
Spring Boot REST API Developer
- FromChina
- Member sinceAug 2025
- Avg. response time1 hour
Languages
Chinese, English
I build Java backends that stay up in production: REST APIs, MySQL optimization, Redis caching, and Kafka/RabbitMQ message-driven services — delivered async, fully
documented, source code included.
5 years with the Spring stack (Boot, MVC, MyBatis-Plus), MySQL tuning, Redis, Docker. Habits from production: idempotency, retries, monitoring, and code your next
developer can actually pick up.
Recent build: a multi-tenant SaaS backend with org-level isolation, idempotent ingestion, and audit trails — the reliability features that save you at 3am.
FAQ
What do you need to start?
Please provide the source code, error messages, logs, and steps to reproduce the issue.
Can you fix all bugs?
Most common Java and Spring Boot issues can be analyzed and fixed. For complex issues, please contact me first.
Will you provide the updated source code?
Yes, I can provide the modified source code or code changes after the issue is resolved.
