Browse categories
Explore
Fiverr Pro
English
$
USD
Karan Kumar
@karan_kumar26
Software Developer
India
English, Hindi
About me
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.
Skills
Karan Kumar
Offline •
See my services
API & Integrations
I will develop a secure spring boot rest apis with java
