I will fix java bugs and errors in your spring boot application

I
iskim_zhang
I
iskim_zhang
Kim Zhang
fix java bugs and errors in your spring boot application
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fix java bugs and errors in your spring boot application
Full Screen
Full Screen
fix java bugs and errors in your spring boot applicationfix java bugs and errors in your spring boot applicationfix java bugs and errors in your spring boot application

About this gig

Is a Java bug blocking your project? I will find the root cause and fix it.

I am a full-time Java developer working with Spring Boot every day. I fix bugs, errors, and exceptions for web applications and REST APIs.

WHAT I CAN HELP WITH:

- Java bugs, errors, and exceptions

- Spring Boot / Spring MVC / Spring Security issues

- REST API bugs and improvements

- Database queries (MySQL, PostgreSQL)

- Small features and code improvements

- NullPointerException, logic errors, and more

WHY WORK WITH ME:

- Full-time backend developer with real production experience

- Clear and honest communication

- I explain the root cause, not just a quick patch

HOW IT WORKS:

1. Send me your error message or code

2. I check it and confirm the scope BEFORE you order

3. You get a clean fix with a short explanation

Please contact me before ordering so I can confirm your bug fits the Basic package.

Let's fix it. Send me a message today.


  • Programming language

    • Java

  • Expertise

    • Debugging
    • Design
    • Databases
    • Source control

  • Frontend framework

    • Angular
    • Bootstrap
    • jQuery
    • React.js
    • Vue.js

  • Backend framework

    • FastAPI
    • Node.js
    • Spring

  • AI & low/no code builders

    • Claude

Get to know Kim Zhang

Kim Zhang

Java Developer, AI Integrations and Data Processing

  • FromChina
  • Member sinceSep 2026
  • Avg. response time1 hour

  • Languages

    Chinese, English
Hi, I'm Kim, a Java developer focused on backend development, AI tool integration, and data processing. I help with Java bug fixes, REST APIs, custom MCP servers that connect AI tools to APIs and data sources, and cleaning CSV, Excel, or JSON data. I take on small, clearly scoped projects and confirm requirements, timelines, and deliverables before starting. Share your task details, sample data, or API documentation so we can discuss a practical solution.

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