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Fiverr Pro
English
$
USD
I will build a secure rest API with fastapi, postgresql and authorization
Ayush Agrawal
About this gig
Most APIs break under real production traffic.
I build Python REST APIs that do not.
With 5+ years of backend engineering experience,
I have built APIs serving 1M+ concurrent users
with sub-100ms response times across 50+ consumers.
WHAT YOU GET:
- REST API design with OpenAPI/Swagger docs
- JWT authentication and RBAC authorization
- PostgreSQL schema design and query optimization
- Redis caching for sub-100ms response times
- Pydantic request validation and error handling
- Pytest unit and integration test coverage
- Docker containerization and deployment setup
- Rate limiting and API Gateway configuration
TECH STACK:
Python, FastAPI, PostgreSQL, Redis, SQLAlchemy,
JWT, Docker, Pytest, Swagger, GCP, AWS
WHO THIS IS FOR:
Startup founders needing a reliable backend,
product teams moving prototypes to production,
and businesses extending existing systems.
Every project is tested, documented, and
production-ready on delivery. No shortcuts.
Message me before ordering. I will review your
requirements and confirm the exact scope before
any work begins.
Get to know Ayush Agrawal
Ayush Agrawal
Python FastAPI AI Systems
- FromIndia
- Member sinceApr 2025
- Avg. response time2 hours
- Last delivery9 months
Languages
Hindi, English
Backend & API Engineer with 5+ years building scalable systems at production scale.
What I build:
- REST/WebSocket APIs (FastAPI, Tornado, Python)
- JWT/RBAC authentication & API Gateway
- PostgreSQL, Redis, Kafka data pipelines
- ETL pipelines (AWS S3, SFTP, REST sources)
- AI/LLM backends with GPT-4 integration
- Docker, GCP, AWS cloud deployments
At scale:
- 1M+ concurrent users supported
- 2M+ daily requests handled
- 10,000+ jobs processed daily
Tested, documented, and production-ready delivery every time. Message me before ordering.
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FAQ
What information do you need to start?
A clear description of what your API needs to do, the type of users or systems that will consume it, any existing database schemas or code if applicable, and your preferred hosting environment. The more detail you provide upfront, the faster and cleaner the delivery will be.
Can you work with my existing codebase?
Yes. I regularly refactor, extend, and optimize existing Python backends. Share your repository before ordering and I will review it and confirm the scope before work begins.
Will I own all the code?
Yes. Full ownership of all source code is transferred to you on delivery. No licensing restrictions, no strings attached.
Can you deploy the API to my server or cloud?
Yes. Deployment to GCP, AWS, or a VPS is included in the Premium package and available as an add-on for Basic and Standard. Mention this when you message me before ordering.
Do you write tests?
Yes. Pytest unit and integration tests are included in Standard and Premium packages. Basic package includes structural testing only. Test coverage report is provided on delivery.
What if I need more endpoints than the package includes?
Message me before ordering and I will give you a custom quote based on your exact requirements. I do not believe in rigid packages when the project does not fit neatly into one.
How do you handle confidential or sensitive projects?
I am happy to sign an NDA before any discussion begins. Message me and I will arrange this before you share any details about your project.
