I will help with API integration to backend or external platform apis

S
shubhmansinha
S
shubhmansinha
Shubham Shah

Level 2

4.9
4.9

About this gig

Welcome to my Java Development & Debugging Gig!

Need help developing, fixing, or improving your Java application? You're in the right place. With 6+ years of professional experience as a full-stack developer, I specialize in Java backend development, debugging, and performance optimization using Spring Boot, Hibernate, and JUnit.

What I Offer

  • Custom Java project development from mini college projects to production-grade modules
  • Bug fixing & debugging identify and fix issues in code, SQL queries, or logic
  • Spring Boot enhancements add new APIs, update existing endpoints, or refactor code
  • Unit testing (JUnit & Mockito) write or improve test coverage for stable builds
  • Database integration fix or enhance queries in MySQL, PostgreSQL, or MongoDB
  • Java GUI applications build user-friendly Swing or JavaFX interfaces
  • Code optimization & documentation improve performance and maintainability

Technologies I Use

  • Core Java, Spring Boot, Spring Data JPA, Hibernate
  • JUnit, Mockito, Maven, Gradle
  • MySQL, PostgreSQL, MongoDB
  • Git, Docker, Postman

Every Java project is unique. Message me with your specific requirements, and Ill provide a custom quote with the best timeline and price.

Get to know Shubham Shah

Shubham Shah

Full Stack Developer Java and MERN Stack Expert AI Solutions Developer

5.0(46)

Level 2

  • FromIndia
  • Member sinceJun 2021
  • Avg. response time1 hour
  • Last delivery5 months
  • Languages

    English
I’m a Full Stack Developer with 7+ years of hands-on experience building scalable, secure web and backend applications using Java (Spring Boot), React.js, Node.js, and MERN stack. I specialize in REST API development, backend architecture, responsive UI design, and bug fixing for existing websites. I also develop AI-powered applications using LangChain and Hugging Face, delivering clean, maintainable, and production-ready code from development to deployment.

My Portfolio

Other Software Development Services I Offer

Reviews

9 reviews for this Gig
4.9

(8)
(1)
(0)
(0)
(0)
Rating Breakdown
  • Seller communication level
    5
  • Recommend to a friend
    4.9
  • Service as described
    4.9
Sort By
Most relevant
  • P
    image-docs

    priyankgandhi0

    IN

    India

    5

    It was pleasure working with shubham! Great at communication!

    $50-$100

    Price

    3 days

    Duration

    Helpful?
    Yes
    No
  • M

    mohammed_safi_

    GB

    United Kingdom

    5

    Excellent coder, quick turnaround.

    Helpful?
    Yes
    No
  • M

    mohammed_safi_

    GB

    United Kingdom

    5

    Was great working with him.

    Helpful?
    Yes
    No
  • M

    mohammed_safi_

    GB

    United Kingdom

    5

    I had a great experience working with him. Communication of the seller was excellent. Also, he has completed the task on time in a short notice. Would recommend 10/10.

    Helpful?
    Yes
    No
  • S

    shmonkey

    GB

    United Kingdom

    5

    I was very pleased with the code I recieved, it worked perfectly and I had no issues. The delivery was faster than I expected and the communication was also really good. I would recommend this seller to anyone looking for Java project development.

    Helpful?
    Yes
    No
Reviews

9 reviews for this Gig
4.9

(8)
(1)
(0)
(0)
(0)
Rating Breakdown
  • Seller communication level
    5
  • Recommend to a friend
    4.9
  • Service as described
    4.9
Sort By
Most relevant
  • P
    image-docs

    priyankgandhi0

    IN

    India

    5

    It was pleasure working with shubham! Great at communication!

    $50-$100

    Price

    3 days

    Duration

    Helpful?
    Yes
    No
  • M

    mohammed_safi_

    GB

    United Kingdom

    5

    Excellent coder, quick turnaround.

    Helpful?
    Yes
    No
  • M

    mohammed_safi_

    GB

    United Kingdom

    5

    Was great working with him.

    Helpful?
    Yes
    No
  • M

    mohammed_safi_

    GB

    United Kingdom

    5

    I had a great experience working with him. Communication of the seller was excellent. Also, he has completed the task on time in a short notice. Would recommend 10/10.

    Helpful?
    Yes
    No
  • S

    shmonkey

    GB

    United Kingdom

    5

    I was very pleased with the code I recieved, it worked perfectly and I had no issues. The delivery was faster than I expected and the communication was also really good. I would recommend this seller to anyone looking for Java project development.

    Helpful?
    Yes
    No