I will debug and fix your java spring boot errors and API issues

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Clark D
debug and fix your java spring boot errors and API issues
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debug and fix your java spring boot errors and API issues

About this gig

Stop wasting days staring at stack traces and error logs. > If your Java Spring Boot application is crashing, throwing 500 errors, or failing to authenticate users, I will step in and fix it immediately. As a backend engineer specializing in secure Java architectures, I can quickly identify the root cause of your issue and deploy clean, optimized fixes.

What I can fix for you:

  • Spring Security & JWT authentication failures
  • Broken REST endpoints and JSON parsing errors
  • Database connection pool issues (Hibernate/JPA)
  • Dependency and versioning conflicts
  • Unexplained crashes and slow response times


Note: Please message me with a brief description of your bug and any error logs before placing an order so we can confirm the scope!

  • Programming language

    • Java

  • Expertise

    • Debugging
    • Performance
    • Security
    • Design
    • Databases

Get to know Clark D

Clark D

Software Engineer II

  • FromPhilippines
  • Member sinceMay 2026

  • Languages

    English, Tagalog
I am a Software Engineer II and mid-level backend developer specializing in Java and Spring Boot. I have extensive experience in developing robust RESTful APIs, implementing business logic for enterprise applications, and building full-stack web solutions using Laravel and Vue.js. I am also an experienced IT instructor with a background in mentoring students in Python and database management.

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