Python Backend Engineer

Job Description: Python Backend Engineer

Mid-Level / Senior Engineering

Full-Time

Job Title

Python Backend Engineer

Experience

3–8 Years

Employment Type

Full-Time

Department

Software Engineering

Location

Hyderabad / Bangalore / Pune / Chennai

Work Mode

Hybrid / On-site / Remote

1. Job Summary

We are looking for a skilled Python Backend Engineer to design, develop, and maintain scalable, secure, and high-performance backend applications.

The ideal candidate should have strong experience in Python programming, backend frameworks such as Django, Flask, or FastAPI, REST API development, database management, and cloud technologies.

The candidate will work closely with frontend developers, QA engineers, DevOps teams, and product managers to build reliable software solutions.

2. Key Responsibilities

• Design, develop, and maintain backend applications using Python.
• Build scalable and secure RESTful APIs and microservices.
• Develop backend services using Django, Flask, or FastAPI.
• Integrate third-party APIs and external services.
• Design, optimize, and maintain relational and NoSQL databases.
• Write clean, reusable, maintainable, and efficient code.
• Implement authentication and authorization mechanisms.
• Optimize application performance and troubleshoot production issues.
• Develop asynchronous applications using Python async programming.
• Implement caching mechanisms using Redis.
• Collaborate with frontend developers for seamless API integration.
• Write unit tests and integration tests using Pytest or unittest.
• Participate in code reviews and follow coding standards.
• Work with Docker and Kubernetes for application deployment.
• Integrate CI/CD pipelines and deployment automation.
• Monitor application health and resolve backend performance bottlenecks.

3. Required Technical Skills

Technical Area

Required Skills

Programming

Python 3.x

Backend Frameworks

Django, Flask, FastAPI

API Development

REST APIs, JSON, GraphQL

Database

PostgreSQL, MySQL

NoSQL

MongoDB, Redis

ORM

SQLAlchemy, Django ORM

Testing

Pytest, unittest, Mock

Version Control

Git, GitHub, GitLab

Cloud

AWS, Azure, or GCP

Containers

Docker, Kubernetes

CI/CD

Jenkins, GitHub Actions

Messaging

Kafka, RabbitMQ

Authentication

OAuth 2.0, JWT

Web Servers

Nginx, Gunicorn, Uvicorn

4. Required Qualifications

• Bachelor's degree in Computer Science, Information Technology, or a related field.
• 3–8 years of professional Python development experience.
• Strong understanding of Python programming concepts and OOP.
• Hands-on experience with Django, Flask, or FastAPI.
• Experience developing and integrating REST APIs.
• Strong SQL and database optimization skills.
• Understanding of microservices architecture.
• Knowledge of asynchronous programming and multithreading.
• Experience with Git and Agile development methodologies.
• Strong debugging, analytical, and problem-solving skills.

5. Preferred Qualifications

• Experience building cloud-native backend applications.
• Knowledge of AWS services such as EC2, S3, Lambda, and RDS.
• Experience with serverless architecture.
• Familiarity with Celery and background task processing.
• Knowledge of API security and performance optimization.
• Experience with event-driven architecture.
• Familiarity with AI/ML model integration and LLM APIs.
• Experience with monitoring tools such as Prometheus and Grafana.

6. Key Competencies

• Strong analytical and problem-solving abilities.
• Effective communication and collaboration.
• Ability to work independently and within a team.
• Attention to code quality and engineering standards.
• Ownership of backend development and delivery.
• Ability to troubleshoot complex technical issues.

7. Key Performance Indicators (KPIs)

• Backend application performance and scalability.
• API response time and reliability.
• Code quality and test coverage.
• Reduction in production defects.
• Database query optimization.
• Successful delivery of backend features.
• Application availability and stability.

8. Interview Process

• Python Programming Assessment
• Python Coding and Problem-Solving Round
• Django / Flask / FastAPI Technical Round
• REST API and Database Round
• System Design and Microservices Round
• Technical Manager Discussion
• HR Discussion

9. Candidate Search Keywords

Useful for Naukri, LinkedIn, and JobDiva searches

• Python Backend Engineer
• Python Backend Developer
• Python Software Engineer
• Python Developer
• Django Developer
• Flask Developer
• FastAPI Developer
• Python API Developer
• Python Microservices Engineer
• Senior Python Developer
• Backend Software Engineer
• Python Cloud Engineer

10. Sample Technical Screening Questions

No.

Interview Question

1

What are Python decorators and generators?

2

Explain the difference between Django and Flask.

3

How do you develop REST APIs using FastAPI?

4

What is the difference between synchronous and asynchronous programming?

5

How do you handle exceptions in Python?

6

Explain Python GIL and its impact on multithreading.

7

How do you optimize slow SQL queries?

8

How do you implement JWT authentication?

9

How do you write unit tests using Pytest?

10

How do you deploy a Python application using Docker?

Recommended JobDiva title

Python Backend Engineer

Suggested experience range

3–8 years.

Must-have skills

Python, Django/FastAPI, REST API, SQL, PostgreSQL, Git, Pytest.