You will get Bug Fixes and Error Resolution for Java Spring Boot Projects
Rising Talent
Rising Talent
Project details
Are you facing errors, crashes, or unexpected behavior in your Spring Boot application?
I’m a Java Spring Boot Developer experienced in debugging, fixing, and improving backend systems.
Here’s what I can do for you 👇
✅ Fix compilation and runtime errors
✅ Debug REST API failures or response issues
✅ Resolve database connection or Hibernate errors
✅ Optimize performance of microservices
✅ Test and verify the solution before delivery
Tech Stack:
Java 8+, Spring Boot, Hibernate, MySQL, Oracle, MongoDB, Docker, Git
Let’s get your backend running smoothly again 🚀
I’m a Java Spring Boot Developer experienced in debugging, fixing, and improving backend systems.
Here’s what I can do for you 👇
✅ Fix compilation and runtime errors
✅ Debug REST API failures or response issues
✅ Resolve database connection or Hibernate errors
✅ Optimize performance of microservices
✅ Test and verify the solution before delivery
Tech Stack:
Java 8+, Spring Boot, Hibernate, MySQL, Oracle, MongoDB, Docker, Git
Let’s get your backend running smoothly again 🚀
Programming Languages
JavaCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, DesignWhat's included
| Service Tiers |
Starter
$27
|
Standard
$67
|
Advanced
$117
|
|---|---|---|---|
| Delivery Time | 1 day | 2 days | 4 days |
Number of Revisions | 0 | 0 | 0 |
Design Customization | - | - | - |
Content Upload | - | - | - |
Responsive Design | - | - | - |
Source Code | - | - | - |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$15 - $100
2 reviews
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FD
Fenil D.
Feb 2, 2026
Java Developer (Spring Boot, React, Jmix) – 3-Day Fixed Task
Nirav did an excellent job on a 3-day fixed-price task. He quickly understood the Spring Boot application, implemented API enhancements, fixed backend bugs, and handled minor React changes smoothly. He worked independently, communicated clearly, and delivered clean, tested, production-ready code on time. Very reliable and professional. Highly recommended, and I would definitely hire him again.
FD
Fenil D.
Nov 24, 2025
Senior Java Microservices Architect (Spring Boot • Cloud • Distributed Systems
I hired this developer for a long-term microservices and distributed system architecture project, and they exceeded expectations in every area. Their expertise in Spring Boot, Spring Cloud, Docker, and authentication flows (JWT/OAuth2) was clearly visible from day one. They approached every task with a strong architectural mindset, clean coding standards, and excellent problem-solving skills.
Communication was clear, proactive, and consistent. Code reviews were handled professionally, and they delivered fully tested, scalable modules on time. Their knowledge of system design, performance optimization, and microservice boundaries added significant value to the project.
This was a high-complexity backend build, and they handled it with confidence and ownership. I will definitely collaborate with them again on future phases. Highly recommended for anyone looking for a senior-level backend or microservices engineer
Communication was clear, proactive, and consistent. Code reviews were handled professionally, and they delivered fully tested, scalable modules on time. Their knowledge of system design, performance optimization, and microservice boundaries added significant value to the project.
This was a high-complexity backend build, and they handled it with confidence and ownership. I will definitely collaborate with them again on future phases. Highly recommended for anyone looking for a senior-level backend or microservices engineer
About Nirav
Senior Software Engineer | Java | ReactJS | Microservices | REST APIs
Keshod, India - 6:15 am local time
Looking for a skilled Java developer to build scalable, high-performance backend systems or full-stack applications? I specialize in delivering robust, enterprise-grade solutions with clean, maintainable code, modern architecture, and seamless deployment designed to scale with your business needs.
Whether it’s a REST API, microservices architecture, real-time messaging system, cloud-native application, or React.js frontend integration, I bring hands-on expertise from design to production.
👨💻 About Me
I’m Nirav, a Java Developer with 3+ years of professional experience building and supporting complex backend systems and enterprise applications. My work focuses on delivering modular, maintainable, and optimized solutions that help businesses scale efficiently while reducing maintenance costs. I also have hands-on experience with React.js, enabling smooth integration between backend APIs and frontend applications.
🏆 Key Achievements
Developed and maintained enterprise-level microservices applications using Spring Boot and Hibernate
Built REST APIs and integrated them with React.js frontends and third-party services
Deployed applications on Docker and Kubernetes, ensuring smooth CI/CD pipelines
Worked with relational and NoSQL databases: MySQL, MongoDB, Oracle
Supported backend systems, including debugging, performance tuning, and bug fixing
📌 Core Expertise & Technologies
Backend Development
Java 8+, J2EE, Spring Boot, Hibernate, REST APIs, Microservices
Kafka, Apache Camel, Redis
Frontend Development
React.js, Redux, basic integration with backend APIs
Databases
MySQL, Oracle, MongoDB
Database design, optimization, and troubleshooting
DevOps & Cloud
Docker, Kubernetes, ECS
CI/CD pipelines: Jenkins, Git
Other Tools
Git, Unix/Linux commands, System debugging & maintenance
🚀 What I Can Deliver
Build REST APIs and microservices from scratch
Integrate backend APIs with React.js frontends
Deploy Spring Boot applications using Docker/Kubernetes
Fix and maintain Java backend applications
Database optimization and performance tuning
Long-term backend support with zero downtime
💡 Why Work With Me?
Client-first approach: Transparent communication and regular updates
Clean & maintainable code: Following industry best practices
End-to-end delivery: From design & development to deployment & support
Performance-driven: Optimized backend systems for speed and scalability
📈 Industries I’ve Worked In
E-commerce, Enterprise Applications, Real Estate, Dairy & Foodtech, SaaS platforms
📞 Let’s Build Your Next Full-Stack Solution
Whether you need a secure API, microservices architecture, React.js frontend integration, or backend migration, I have the expertise to make it happen. Let’s discuss your project and bring your vision to life.
🔑 SEO Keywords for Upwork Search:
Java Developer, Java Spring Boot Developer, React.js Developer, Full-Stack Java Developer, Microservices Developer, REST API Development, Kafka Developer, Hibernate ORM, MySQL, MongoDB, Oracle, Docker, Kubernetes, CI/CD Pipeline Developer, Backend Engineer, Cloud Native Java, System Debugging, Java Backend Support
Steps for completing your project
After purchasing the project, send requirements so Nirav can start the project.
Delivery time starts when Nirav receives requirements from you.
Nirav works on your project following the steps below.
Revisions may occur after the delivery date.
Step 2 — Identify Root Cause
I’ll analyze the code, logs, and configuration files to find the exact source of the issue or bug.
Step 3 — Fix and Test the Issue
I’ll fix the bug, perform unit testing, and verify that the application runs smoothly without errors.