You will get Java & .NET REST API Bug Fixing & Performance Optimization
Project details
Having trouble with a Java Spring Boot or .NET REST API? I can help you identify the root cause and implement a clean, reliable fix.
With 4 years of professional software development experience, I work with production applications in Java, Spring Boot, .NET, ASP.NET Core, REST APIs, SQL, and third-party integrations.
I can help with:
API errors and unexpected responses
Java/Spring Boot or .NET/ASP.NET Core bugs
Business logic and validation issues
Database and SQL-related problems
Request/response mapping issues
Authentication and authorization issues
Third-party API integrations
Existing backend code and application maintenance
Performance-related backend issues
My approach is to understand the existing code flow, reproduce or investigate the issue, identify the root cause, implement the fix, and test the solution.
I work carefully with existing codebases and aim to provide maintainable solutions rather than temporary workarounds.
Each package covers one bug/issue. For multiple bugs, major new features, complete API development, or complex projects, please contact me first so I can review the requirements and provide the appropriate scope and pricing.
With 4 years of professional software development experience, I work with production applications in Java, Spring Boot, .NET, ASP.NET Core, REST APIs, SQL, and third-party integrations.
I can help with:
API errors and unexpected responses
Java/Spring Boot or .NET/ASP.NET Core bugs
Business logic and validation issues
Database and SQL-related problems
Request/response mapping issues
Authentication and authorization issues
Third-party API integrations
Existing backend code and application maintenance
Performance-related backend issues
My approach is to understand the existing code flow, reproduce or investigate the issue, identify the root cause, implement the fix, and test the solution.
I work carefully with existing codebases and aim to provide maintainable solutions rather than temporary workarounds.
Each package covers one bug/issue. For multiple bugs, major new features, complete API development, or complex projects, please contact me first so I can review the requirements and provide the appropriate scope and pricing.
Programming Languages
ASP.NET, Java, C#Coding Expertise
Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$5
|
Standard
$30
|
Advanced
$50
|
|---|---|---|---|
| Delivery Time | 2 days | 3 days | 7 days |
Number of Revisions | 1 | 2 | 8 |
Bug Investigation | |||
Fix Documentation | - | ||
Detailed Code Comments | - | - |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$10 - $20
Additional Revision
+$10
Fix Documentation
(+ 1 Day)
+$10
Detailed Code Comments
(+ 1 Day)
+$10About Chandramouli
Java & .NET Backend Developer | REST APIs, SQL & Integrations
Tirupati, India - 5:41 am local time
I’ve worked on product-based applications in both the Insurance Technology and Banking domains, including backend development, application performance optimization, bug fixing, platform development, and code generation.
### What I can help you with
• Java / Spring Boot backend development
• .NET / ASP.NET Core development
• REST API development, debugging, and enhancement
• SQL and database troubleshooting
• Third-party API integrations and webhooks
• Bug fixing and maintenance of existing applications
• Application performance optimization
• React frontend and API integration
• Code generation, automation, and developer utilities
In my current role, I work on an Insurance Technology product, developing new features, improving application performance, and fixing issues in existing code.
Previously, I worked in the core technology/platform team of a Banking product company. I contributed to a configuration-driven application development platform that generated applications from configurable structures and functionality. My primary areas were code generation, platform development, troubleshooting, and performance optimization.
I’m particularly comfortable working with existing codebases, understanding complex application flows, identifying root causes, and implementing clean, maintainable solutions.
I’m open to both small, well-defined tasks and larger backend requirements, including API development, integrations, debugging, performance improvements, and application maintenance.
I use AI-assisted development tools to improve development speed, testing, documentation, and troubleshooting while reviewing and validating the resulting code.
If you have a Java, .NET, REST API, SQL, integration, performance, or existing-application issue, feel free to share the details. I’ll review the requirement and suggest a practical approach.
Steps for completing your project
After purchasing the project, send requirements so Chandramouli can start the project.
Delivery time starts when Chandramouli receives requirements from you.
Chandramouli works on your project following the steps below.
Revisions may occur after the delivery date.
Review the requirements and reproduce the reported API issue.
Analyze code, logs, and database to identify the root cause.