I will fix spring boot rest API bugs within 24 hours

A
abishekkumar23
A
abishekkumar23
Abishek Kumar K
fix spring boot rest API bugs within 24 hours
Full Screen
fix spring boot rest API bugs within 24 hours
Full Screen
fix spring boot rest API bugs within 24 hoursfix spring boot rest API bugs within 24 hours

About this gig

Welcome!

I am an experienced backend developer, I develop and fix backend issues in Spring Boot apps quickly and efficiently.


I handle REST API bugs, database errors, authentication issues, microservices problems, and complex logic. Premium plans include code improvements and clear explanations.


Whether it's a single API or multiple modules, I ensure your backend runs smoothly. I fix CRUD bugs, auth flows, API integrations, microservices communication, and business logic issues with precision.


My Experience Includes:

  • Java 8+
  • Spring Boot, Spring MVC, Spring Data JPA
  • Hibernate
  • Swagger / OpenAPI
  • Postman
  • WebSockets
  • Redis Cache
  • Git & GitHub
  • Jenkins
  • Debugging & Optimization
  • Query performance tuning
  • Microservices architecture


Fixes Include:

  • Backend errors & performance issues
  • REST APIs (JWT, OAuth2, Keycloak, MFA)
  • Database issues (MySQL / PostgreSQL)
  • Microservices communication problems


Why Choose Me?

  • Fast delivery
  • Clear communication
  • Clean, maintainable code
  • 100% bug-fix guarantee


Scope (Important):

For complex modules, integrations, or large features, contact me for custom pricing.


Please message me before placing an order.

  • Programming language

    • Java

  • Expertise

    • Algorithms & Data structures
    • Debugging
    • Security
    • Databases
    • Source control

  • Frontend framework

    • React.js

  • Backend framework

    • Spring
    • Other

Get to know Abishek Kumar K

Abishek Kumar K

Secure backends for Smooth applications

  • FromIndia
  • Member sinceNov 2025

  • Languages

    Tamil, English
I am an experienced backend developer having more than 3 years of experience. I help businesses build secure, scalable, and high-performance backend systems. I specialize in robust authentication and security solutions, including MFA, JWT, and Keycloak-based authentication, and develop payment and KYC solutions for financial and e-commerce platforms. Skilled in Java, Spring Boot, Microservices, REST APIs, MySQL and PostgreSQL databases and Docker, I deliver clean, maintainable backend systems that improve performance and ensure strong data security.

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