Gammastack - Python Developer - Django/Flask

Description :

- Develop, test, and maintain backend applications using Python

- Work with frameworks such as Django / Flask / FastAPI

- Design and consume RESTful APIs

- Write clean, efficient, and reusable code

- Collaborate with frontend developers, product managers, and QA teams

- Perform code reviews and debugging to ensure high performance

- Integrate databases and third-party APIs

- Participate in the full software development lifecycle

Required Skills & Qualifications :

- Professional experience in Python development

- Strong knowledge of Python frameworks (Django, Flask, or FastAPI)

- Experience with REST APIs and backend services

- Good understanding of SQL databases (MySQL, PostgreSQL)

- Basic knowledge of NoSQL databases (MongoDB) is a plus

- Familiarity with Git / version control systems

- Understanding of OOP concepts and data structures

- Experience working in Agile/Scrum environments

Backend Core :

- Python 3.11 with Poetry for dependency management

- FastAPI async web framework with dependency injection

- SQLAlchemy 2.0 + SQLModel async ORM with typed models

- Pydantic v2 request/response validation and settings management

- Alembic database migrations (dual-database setup)

Data stores :

- PostgreSQL primary database (two DBs: operational + metrics)

- Redis caching, JWT token management, idempotency, feature-specific stores

- RabbitMQ message broker for Celery

Async stack :

- asyncpg async Postgres driver for FastAPI

- psycopg 3 sync Postgres driver for Celery workers

- httpx async HTTP client for external API calls

- uvicorn + uvloop ASGI server with high-performance event loop

Background processing :

- Celery with RabbitMQ broker

- Celery Beat scheduled tasks (RTP aggregation, tier calculations, promo campaigns, reconciliation jobs)