Browse categories
Explore
Fiverr Pro
English
$
USD
I will build java spring boot rest apis and backend systems
Shubhangi R
About this gig
I develop custom software and scalable backend systems using Java, Spring Boot, and modern backend technologies.
Whether you need a new backend, REST API, microservices, or improvements to an existing Java application, I focus on building solutions that are secure, maintainable, reliable, and ready to scale.
What I can build:
- Custom Java backend applications
- REST APIs and microservices
- Spring Boot applications
- Database-driven backend systems
- Authentication and authorization with Spring Security
- Third-party API integrations
- Database design and query optimization
- Redis caching and Kafka-based asynchronous processing
- Bug fixing, performance optimization, and existing project improvements
I work with Java, Spring Boot, Spring Security, JPA/Hibernate, MySQL, PostgreSQL, Redis, Kafka and Docker.
Whether you're starting a new project or improving an existing one, I'll deliver clean, well-structured, and production-ready backend code based on your requirements.
Get to know Shubhangi R
Shubhangi R
Java Backend Engineer
- FromIndia
- Member sinceSep 2026
- Avg. response time1 hour
Languages
English
I am a Java Backend Engineer with over 3 years of experience building low-latency REST APIs, microservices, and event-driven integrations. I specialize in Java, Spring Boot, Kafka, and Redis, with a proven track record of improving API latency from 500 ms to 10 ms and engineering workflows for high-volume platforms.
FAQ
1. What information do you need to start?
Please share your project requirements, API specifications or documentation, database details, existing source code (if applicable), and any specific features you need.
2. Can you develop REST APIs using Java and Spring Boot?
Yes. I can develop custom REST APIs using Java, Spring Boot, Spring Data JPA, and Hibernate, including validation, exception handling, and database integration.
3. Can you work on an existing Java/Spring Boot project?
Yes. I can add new features, fix bugs, improve existing APIs, optimize database queries, and refactor existing Java/Spring Boot code.
4. Can you implement authentication and authorization?
Yes. I can implement secure authentication and authorization using Spring Security and JWT, based on your project's requirements.
5. Which databases do you work with?
I work with MySQL and PostgreSQL, including database design, JPA/Hibernate integration, query optimization, and relationships.
6. Can you develop microservices?
Yes. I can develop Spring Boot microservices and work with technologies such as service discovery, API Gateway, OpenFeign, Kafka, and Docker when required.
7. Can you integrate third-party APIs?
Yes. I can integrate external or third-party REST APIs into your Java/Spring Boot application and handle requests, responses, authentication, errors, and data transformation.
8. Will I receive the source code?
Yes. Source code is included with the development work unless otherwise agreed.
9. Can you optimize a slow backend or API?
Yes. I can investigate API performance issues, optimize database queries and indexes, improve caching, and identify backend bottlenecks.
10. Can you deploy my Spring Boot application?
Yes, deployment and cloud setup can be discussed as an additional requirement. I can work with Docker and Kubernetes based on the project's needs.
