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Fiverr Pro
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$
USD
I will build or fix your python fastapi rest API
Nirmal B.
About this gig
Need a clean, reliable, and secure FastAPI backend?
I can build, fix, or improve Python FastAPI REST APIs for web applications, mobile apps, SaaS products, and other backend systems.
I can help with:
- FastAPI REST API development
- Fixing bugs and API errors
- Creating new API endpoints
- PostgreSQL database integration
- Authentication and authorization
- JWT and role-based access control
- Request validation and error handling
- Third-party API integrations
- Docker setup
- API security improvements
- Clean and maintainable backend structure
I focus on secure backend development, clear communication, and well-structured code.
Please contact me before ordering if your project involves a large backend, complex authentication, payment systems, multiple third-party services, deployment, or more endpoints than the selected package includes. This helps me understand your requirements and recommend the correct package or a custom offer.
I will only work on systems and applications that you own or are authorized to modify.
Get to know Nirmal B.
Nirmal B.
Application Security and Backend Developer
- FromSri Lanka
- Member sinceAug 2026
- Avg. response time1 hour
Languages
English
I am a Computer Science and Engineering undergraduate specializing in Cybersecurity Engineering. I build secure web applications, APIs, and backend systems using Python, FastAPI, PostgreSQL, Docker, and REST APIs.
My work includes authentication, authorization, application security, API security, vulnerability analysis, and AI agent security.
I can help with backend development, API integrations, security reviews, database integration, and technical troubleshooting.
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Other Software Development Services I Offer
FAQ
Do I need to contact you before placing an order?
Yes. I recommend contacting me first, especially for larger APIs, authentication systems, third-party integrations, deployment, or database work. This allows me to confirm the scope and recommend the correct package.
Can you work on an existing FastAPI project?
Yes. I can debug, fix, improve, or add new endpoints and features to an existing Python FastAPI backend. Please share the relevant project details and describe the issue before ordering.
Which databases can you work with?
I mainly work with PostgreSQL and SQL-based databases. I can also help with database models, CRUD operations, API-to-database integration, validation, and related backend functionality.
Can you add authentication and authorization?
Yes. I can implement features such as JWT authentication, protected API endpoints, user roles, and role-based access control. Complex authentication requirements may require a custom offer.
What do I need to provide before you start?
Please provide your requirements, expected API functionality, existing source code if applicable, database details, API documentation or third-party API information, and any errors you are currently experiencing.
