This is a full-time, in-office position for Chennai, Perungudi location with shift timing 12noon to 9PM IST

Apptium is looking for a Senior Python Developer with 7+ years of experience to design and develop complex software systems and applications. Collaborate with a dynamic, cross-functional team to create high-performance, scalable, and secure software. This is the opportunity to influence the direction of technology decisions while mentoring junior developers and sharing expertise in Python development.

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ROLES AND RESPONSIBILITIES

• Design, develop, and maintain scalable and high-performance Python applications.

• Write clean, reusable, and efficient Python code.

• Develop RESTful APIs using Django, Flask, or FastAPI.

• Implement authentication and authorization mechanisms (JWT, OAuth).

• Design and optimize database models using PostgreSQL, MySQL, or MongoDB.

• Perform query optimization, indexing, and bulk data processing.

• Manage data migrations using Django ORM or SQL Alchemy.

• Work with cross-functional teams (frontend, DevOps, product managers).

• Follow best practices for secure coding and data protection.

• Implement error handling, logging, and debugging strategies.

• Write unit tests and integration tests using pytest/unittest.

• Implement ETL pipelines for data ingestion and transformation.

• Integrate applications with cloud services like AWS, Google Cloud, or Azure etc.

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JOB REQUIREMENTS

• Hands-on experience with Django, Flask, and FastAPI for scalable web applications.

• Expert in Celery with Redis/RabbitMQ for background tasks and scheduling with Celery Beat/Cron Jobs.

• Skilled in Headless API development, authentication (JWT, OAuth), and API security best practices. Efficient in handling large CSV, JSON, XML, and Excel files.

• Strong knowledge of optimized DSA for bulk data processing.

• Proficient in Django ORM, SQLAlchemy, and writing optimized Native SQL Queries.

• Expertise in Redis, Memcached for API performance and caching.

• Experience with Pytest, Unittest for unit and integration testing.

• Proficient in API testing with Postman and performance monitoring.

• Strong hands-on experience with Pandas, NumPy for data transformation.

• Experienced with Docker, Kubernetes, GitHub Actions, and Jenkins for automated deployments.

• Deep understanding of Python’s threading restrictions and multi-process architecture.

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PREFERRED QUALIFICATIONS

• BE/MCA Degree in Computer Science or related field