- Multi-tenant system with RBAC
- Optimized query (280ms → 45ms)
- Clean service-based architecture
FastAPI, PostgreSQL, SQLAlchemy, JWT
Backend Developer
Irish Prajapati
I build backends that are simple to run: clear APIs, reliable data models, and measurable performance.
Reduced query latency by 80% with indexing + query optimization.
Python · FastAPI · PostgreSQL
Projects
Backend projects
Clean APIs, solid data models, and performance you can measure.
- Transaction-safe borrow/return system
- Enforced rules and constraints
- OpenAPI documentation
FastAPI, PostgreSQL
- Idempotent order handling
- Transaction-safe stock updates
- Strong validation with Pydantic
FastAPI, PostgreSQL
Engineering approach
How I build
Design APIs with simple, explicit contracts. Predictable behavior.
Start with the data model. Schema drives everything.
Keep business logic in service layers, not scattered across routes.
Enforce integrity in the database (constraints > assumptions).
Experience
Backend Developer Intern
Smart Saauzi Solutions Pvt. Ltd.
Aug 2025 – Nov 2025
- Defined and documented functional + non-functional requirements for a Project Management (PM) system.
- Built secure RESTful APIs and implemented role-based permission controls aligned with workflows.
- Owned database architecture and server-side logic, ensuring smooth integration with the frontend.
- Wrote automation scripts to improve testing, deployment, and reliability. Increased dev efficiency.
Tech stack
A focused stack
Backend
- FastAPI
- Django
- Spring Boot
- REST APIs
- JWT
Data
- PostgreSQL
- SQLAlchemy
- Schema design
- Indexing
Languages & tools
- Python
- Java
- Docker
- Git
- GitHub
- Postman