I will build high performance fastapi backends with async python and pydantic

A
aa_galib
A
aa_galib
Asadullah
build high performance fastapi backends with async python and pydantic
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build high performance fastapi backends with async python and pydantic
Full Screen
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build high performance fastapi backends with async python and pydanticbuild high performance fastapi backends with async python and pydanticbuild high performance fastapi backends with async python and pydantic

About this gig

I build production-ready FastAPI backends that are fast, type-safe, and maintainable from simple REST APIs to complex async microservices.


What I Deliver

API Development: RESTful endpoints with proper HTTP methods and status codes. Pydantic models for automatic validation and serialization. OpenAPI/Swagger documentation auto-generated.

Authentication & Security: JWT token authentication. OAuth2 with password flow. API key authentication. Role-based access control (RBAC).

Database Integration: PostgreSQL with SQLAlchemy (async). MongoDB with Motor (async). Redis for caching and sessions. Database migrations with Alembic.

Production Features: Background tasks with Celery or FastAPI BackgroundTasks. Rate limiting and throttling.


Tech Stack: FastAPI, Starlette, Pydantic v2, PostgreSQL, MongoDB, Redis, SQLAlchemy 2.0, Docker, Docker Compose, Uvicorn, Gunicorn


Use Cases:

  • SaaS backend APIs
  • Mobile app backends
  • Microservices
  • Internal tools and dashboards
  • Data ingestion APIs
  • Authentication services


  • Programming language

    • Python

  • Expertise

    • Debugging
    • Performance
    • Security
    • Databases
    • Source control

  • Frontend framework

    • Vue.js

  • Backend framework

    • Django
    • Other

Get to know Asadullah

Asadullah

Python Backend Developer, AWS, Data Engineering

5.0(3)
  • FromBangladesh
  • Member sinceOct 2023
  • Last delivery8 months

  • Languages

    Bengali, English
I build backend APIs and data systems that scale. 5+ years building production systems: FastAPI/Django backends, AWS serverless platforms (10K+ users), async data pipelines, OpenSearch integrations (100K+ docs), web scrapers, and InfluxDB time-series systems with Grafana dashboards. I deliver clean, documented, production-ready code — APIs with proper validation, ETL pipelines with error handling, and infrastructure that doesn't break at 3 AM. Published researcher (Springer, IEEE) on distributed systems. Message me with your requirements — I'll give you an honest assessment.

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