Python Backend Developer

Colan Infotech; Chennai District; On-site; INR 900,000 - 1,300,000; Full time

Job summary

Colan Infotech in Chennai is seeking a Python Backend Developer to join our team to build scalable backend applications, REST APIs, and integrate third‑party services, with a focus on performance and maintainability.

The ideal candidate has 3–4 years of Python development experience, deep knowledge of Django, Django REST Framework, PostgreSQL, and exposure to Docker, AWS and CI/CD practices. Collaborative mindset and strong problem solving are essential.

Qualifications

• 3–4 years of Python backend development experience.
• Strong knowledge of Python, Django, and Django REST Framework.
• Good understanding of Flask and/or FastAPI.
• Strong PostgreSQL, SQL and Django ORM knowledge.
• Experience with REST API development and third‑party integrations.

Responsibilities

• Develop and maintain backend applications using Python and Django.
• Build REST APIs using Django REST Framework, Flask, and/or FastAPI.
• Design and optimize PostgreSQL databases and SQL queries.
• Work with Django ORM, models, relationships, and migrations.
• Integrate third‑party services such as payment, WhatsApp, SMS, and email APIs.
• Implement authentication, validation, error handling, and API security.
• Debug issues and optimize application performance.
• Write clean, reusable, and maintainable code.
• Collaborate with developers, QA, and other team members.

Skills

Python

Django

Django REST Framework

REST APIs

PostgreSQL

Git/GitHub/GitLab

Problem solving

Tools

Docker

Linux

Redis

Celery

CI/CD

AWS

Job description

About the Role

We are looking for a skilled Python Backend Developer with 3-4 years of experience in developing scalable backend applications and REST APIs. The candidate should have hands‑on experience with Python, Django, PostgreSQL, and third‑party API integrations.

Key Responsibilities

• Develop and maintain backend applications using Python and Django.
• Build REST APIs using Django REST Framework, Flask, and/or FastAPI.
• Design and optimize PostgreSQL databases and SQL queries.
• Work with Django ORM, models, relationships, and migrations.
• Integrate third‑party services such as payment, WhatsApp, SMS, and email APIs.
• Implement authentication, validation, error handling, and API security.
• Debug issues and optimize application performance.
• Write clean, reusable, and maintainable code.
• Collaborate with developers, QA, and other team members.

Experience & Skills

• 3-4 years of experience in Python backend development.
• Strong knowledge of Python, Django, and Django REST Framework.
• Good understanding of Flask and/or FastAPI.
• Strong knowledge of PostgreSQL, SQL, and Django ORM.
• Experience in REST API development and third‑party integrations.
• Understanding of authentication, JSON, HTTP methods, and API security.
• Experience with Git/GitHub/GitLab.
• Strong problem‑solving and debugging skills.

What We Look For

• Strong backend development fundamentals.
• Ability to understand requirements and develop effective solutions.
• Good coding, analytical, and problem‑solving skills.
• Ability to work independently and collaboratively.
• Good communication and teamwork skills.

Preferred Qualifications

• Knowledge of Docker, Linux, Redis, Celery, and CI/CD.
• Exposure to AWS or other cloud platforms.
• Experience with PyTest or Django Test Framework.
• Experience with webhooks and OAuth/API authentication.