Senior Python Backend Developer (FastAPI, AWS, PostgreSQL)

CGI (Hyderabad, TS, India) Follow 1 day ago

Position Description:

Position Description
Founded in , CGI is among the largest independent IT and business consulting services firms in the world. With 94, consultants and professionals across the globe, CGI delivers an end-to-end portfolio of capabilities, from strategic IT and business consulting to systems integration, managed IT and business process services and intellectual property solutions. CGI works with clients through a local relationship model complemented by a global delivery network that helps clients digitally transform their organizations and accelerate results. CGI Fiscal reported revenue is CA$14.68 billion and CGI shares are listed on the TSX (GIB.A) and the NYSE (GIB). Learn more at .
Job Title: Python Pyspark and AWS Developer
Position: Senior Software Engineer
Experience: 5- 8 Years
Category: Software Development/ Engineering
Shift: General
Main location: Hyderabad, Bangalore, Chennai
Position ID: J-
#LI-SP40
Employment Type: Full Time
Education Qualification: Bachelor's degree in Computer Science or related field or higher with minimum 5 years of relevant experience.
We are looking for an experienced Python Backend Developer with strong expertise in FastAPI, PostgreSQL, and AWS cloud services. The ideal candidate should have experience designing and developing scalable, secure, and high-performance RESTful APIs for enterprise applications. The role requires hands-on experience with asynchronous programming, database optimization, cloud-native architectures, and production support.

Your future duties and responsibilities:

Design, develop, and maintain scalable backend applications using Python and FastAPI.
Build production-grade REST APIs following clean architecture and best coding practices.
Develop reusable and maintainable code using Pydantic models, dependency injection, and asynchronous programming.
Design and implement authentication and authorization mechanisms using JWT/OAuth2.
Develop middleware for logging, monitoring, request validation, exception handling, and security.
Optimize application performance through asynchronous processing, background tasks, caching, and rate limiting.
Design, develop, and optimize PostgreSQL database schemas for high-performance applications.
Write efficient SQL queries using joins, CTEs, window functions, and query optimization techniques.
Create and maintain database migrations using Alembic.
Work with SQLAlchemy (preferably Async SQLAlchemy) for ORM implementation.
Manage transactions, connection pooling, and database performance tuning.
Build event-driven solutions using AWS services such as SQS, SNS, Lambda, and Step Functions.
Develop ETL/data processing solutions using AWS Glue where applicable.
Configure application monitoring, logging, and alerting using Amazon CloudWatch.
Participate in architecture discussions, code reviews, production deployments, and troubleshooting.
Collaborate with cross-functional teams following Agile methodologies.

Required qualifications to be successful in this role:

Must-Have Skills:
Python 3.x
FastAPI
AsyncIO / Async Programming
Pydantic
SQLAlchemy (Async preferred)
Alembic
REST API Development
Authentication & Security
JWT Authentication
OAuth2
API Security Best Practices
Role-Based Access Control (RBAC)
Database
PostgreSQL
Database Schema Design
Indexing Strategies
Query Optimization
EXPLAIN ANALYZE
Common Table Expressions (CTEs)
Window Functions
Transaction Management
Connection Pooling
AWS Cloud
AWS Lambda
Amazon SQS
Amazon SNS
AWS Step Functions
AWS Glue
Amazon CloudWatch
IAM (preferred)
Additional Skills
Git
Docker
CI/CD Pipelines
Unit Testing (PyTest)
API Documentation (OpenAPI/Swagger)
Agile/Scrum
Preferred Qualifications
Experience designing scalable microservices.
Knowledge of distributed systems and event-driven architectures.
Experience with caching technologies such as Redis.
Understanding of API rate limiting and performance optimization.
Experience deploying applications on AWS using Infrastructure as Code (Terraform/CloudFormation is a plus).
Exposure to Kubernetes/EKS is an added advantage.
Required Competencies
Strong problem-solving and analytical skills.
Excellent debugging and performance tuning capabilities.
Ability to design scalable and maintainable enterprise solutions.
Good communication and stakeholder management skills.
Experience working in Agile development environments.