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I will develop java rest API and backend services, will debug code
Vikash Gupta
About this gig
Are you looking for a reliable Java Spring Boot developer to build or improve your backend APIs?
I am an experienced backend software engineer with 14 years of experience in software development. I can help you build clean, maintainable and reliable backend services using Java and Spring Boot.
What I can help you with:
- Develop REST APIs using Java and Spring Boot
- Implement CRUD operations and business logic
- Integrate databases with backend applications
- Add input validation and exception handling
- Debug and fix backend issues
- Improve existing code quality and maintainability
- Provide readable, well-structured source code
What you will receive:
- Implementation based on your requirements
- Clean and maintainable code
- Basic validation and error handling, as agreed
- Source code and a brief explanation of the changes
I focus on understanding your requirements, writing quality code, and communicating clearly throughout the project.
Please share your requirements before ordering, especially if your project involves complex business logic, third-party integrations, an existing production system, or deployment.
Let's build a reliable backend solution for your application!
Get to know Vikash Gupta
Vikash Gupta
Senior Backend Engineer
- FromIndia
- Member sinceOct 2026
- Avg. response time1 hour
Languages
Hindi, English
I am a Senior Backend Engineer with 14+ years of experience building scalable systems using Java, Spring Boot, AWS, and Elasticsearch. I specialize in distributed systems, search and analytics, and performance optimization. I enjoy solving complex engineering problems where scalability and reliability matter.
FAQ
What do I need to provide before you can get started?
Please share your project requirements, API specifications (or endpoints needed), expected inputs and outputs, database preferences, and access to any existing code or documentation. If you don't have technical documentation yet, a brief func
Why should I message you before placing an order?
Every backend system is unique. Contacting me first helps us clarify the scope, confirm database models or third-party integrations, select the right package, and avoid unnecessary cancellations or delays.
Which Java and Spring Boot versions do you support?
I work across modern Java LTS releases (Java 8, 11, 17, and 21) and Spring Boot versions (2.x and 3.x). Let me know if your project has a specific version constraint or enterprise dependency standard.
Which databases can you connect to the backend?
I can integrate standard relational databases like PostgreSQL and MySQL using Spring Data JPA/Hibernate, as well as NoSQL options like MongoDB and Redis for caching.
Do you write unit or integration tests for the code?
Yes. I follow clean coding principles and can provide JUnit/Mockito tests to verify controllers, business service logic, and database persistence layers depending on the scope of your order.
Can you help debug or optimize an existing Spring Boot application?
Yes. In addition to building new APIs from scratch, I can analyze existing codebases to fix bugs, optimize database queries, resolve performance bottlenecks, or refactor legacy code into clean, maintainable microservice patterns.
What do you deliver when the order is completed?
You will receive the clean, production-ready source code repository (as a zip archive or via Git branch), configuration details, and a clear README with instructions on how to build, run, and test the endpoints locally (including sample cURL requests or Postman collections).
Do you handle server deployment and cloud hosting?
Basic packages cover code delivery and local environment setup. Cloud deployment (such as AWS, Docker containerization, or CI/CD integration) can be added as a custom gig extra—just message me to discuss your infrastructure setup.
