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I will do asp net core bug fixing and feature development
Fossyl Labs
About this gig
- Is your ASP.NET Core application experiencing bugs, API failures, performance issues, or missing features?
- I can help you quickly identify the root cause, fix the issue, and deliver clean, maintainable code.
- With over 12 years of professional experience developing enterprise software, I specialize in ASP.NET Core, C#, REST APIs, SQL Server, PostgreSQL, Entity Framework Core, Dapper, Clean Architecture, and CQRS.
I can help you with:
- ASP.NET Core bug fixing
- C# application troubleshooting
- Web API development and debugging
- REST API integration
- Database query optimization
- SQL Server & PostgreSQL fixes
- Authentication & Authorization (JWT, OAuth)
- Performance optimization
- New feature development
- Existing application maintenance
- Code refactoring and optimization
Why choose me?
- 12+ years of enterprise software development
- Clean, maintainable code
- Fast communication
- Secure and scalable solutions
- Source code included
- Thorough testing before delivery
Please contact me before placing an order so I can review your requirements and recommend the most suitable package.
Get to know Fossyl Labs
Fossyl Labs
AI and Full Stack Software Development Company
- FromSri Lanka
- Member sinceJun 2026
- Avg. response time1 hour
Languages
English
Fossyl Labs is a software development company specializing in AI-powered solutions, custom web applications, enterprise software, cloud deployment, and business automation. We build scalable, secure, and high-performance solutions using ASP.NET Core, React, Next.js, PostgreSQL, Docker, Kubernetes, and modern cloud technologies. From SaaS platforms and APIs to mobile apps and AI integration, we help startups and businesses transform ideas into reliable digital products with quality, transparency, and long-term support.
My Portfolio
Other Software Development Services I Offer
FAQ
Can you fix bugs in an existing ASP.NET Core application?
Yes. I can investigate and resolve issues in existing ASP.NET Core, .NET, and C# applications, including Web APIs, database problems, authentication issues, performance bottlenecks, and production errors.
Can you add new features to my existing project?
Yes. I can implement new modules, REST API endpoints, business logic, database changes, reports, dashboards, authentication, and third-party integrations while following your existing architecture.
Do you work with SQL Server and PostgreSQL?
Yes. I have extensive experience with SQL Server, PostgreSQL, Entity Framework Core, Dapper, query optimization, stored procedures, indexing, database design, and performance tuning.
Can you work with my existing source code?
Absolutely. I regularly work on existing projects, understand the current architecture, identify issues, and implement fixes or enhancements without disrupting existing functionality.
Do you provide source code?
Yes. Unless agreed otherwise before the project begins, all completed work includes the updated source code.
Can you integrate third-party APIs?
Yes. I can integrate payment gateways, REST APIs, authentication providers, cloud services, and other third-party systems into your ASP.NET Core application.
