I will develop a secure spring boot rest apis with java

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karan_kumar26
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karan_kumar26
Karan Kumar

About this gig

I build clean, working REST APIs using Java and Spring Boot the same stack I use professionally for backend development.

What I offer:

RESTful API design (CRUD endpoints) using Spring Boot

Database integration with Hibernate/JPA (MySQL, PostgreSQL, or your choice)

Input validation and proper error handling

Organized, documented code following industry best practices

A Postman collection so you can test everything immediately

I have hands-on experience building backend microservices, including secure authentication systems (OAuth2/JWT) and integrations with external services, so I can also help if your project needs more than basic CRUD just message me first to discuss scope.

Send me your requirements and I'll get started quickly. Looking forward to working with you!

Get to know Karan Kumar

Karan Kumar

Software Developer

  • FromIndia
  • Member sinceSep 2026
  • Languages

    Hindi, English
I'm a backend software developer specializing in Java and Spring Boot, with hands-on experience building secure, production-grade REST APIs. I've worked extensively with Spring Security, OAuth2 authorization flows (Spring Authorization Server), JWT-based authentication, and Hibernate for data persistence. My background includes developing microservices for multi-tenant platforms, including LMS integrations and custom auth/session management. I write clean, well-tested code and enjoy solving tricky backend problems — from token refresh flows to complex API design.