Back End Developer

Sr. Backend Developer (Onsite) share profiles with 7 years experience only. Location: RMZ Ecoworld, Marathahalli Immediate Joiners only who can join within a week. Role Overview We’re seeking an experienced Backend Developer to join our engineering team. In this role, you’ll design, develop, and maintain robust, scalable, and performant backend services using FastAPI, SQLAlchemy, and PostgreSQL. You’ll collaborate with cross-functional teams to implement business logic, API endpoints, and database solutions while adhering to our comprehensive development standards. Responsibilities • Design and develop RESTful APIs using FastAPI following our established API standards and best practices • Implement robust data models and database interactions using SQLAlchemy and PostgreSQL • Develop and maintain core business logic in service and repository layers • Write comprehensive unit, integration, and end-to-end tests for all code • Create clear, detailed documentation for code, APIs, and architectural decisions • Collaborate with frontend developers to define API contracts and integration points • Implement and maintain high availability patterns and performance optimizations • Participate in code reviews, providing constructive feedback to peers • Troubleshoot and resolve complex technical issues across the application stack • Contribute to architectural decisions and help evolve our technology standards Required Skills and Experience • 7+ years of professional experience in backend development • Strong proficiency in Python (3.9+) with solid understanding of type hints, async/await, and modern Python features • 2+ years of production experience with FastAPI hosted on Azure Cloud. • Proficiency with relational databases, particularly PostgreSQL • Working knowledge of SQLAlchemy • Experience implementing RESTful APIs and understanding of API design principles • Strong understanding of software testing approaches (unit, integration, end-to-end) • Familiarity with containerization (Docker) and container orchestration • Experience with Git version control and CI/CD pipelines • Knowledge of secure coding practices and common security vulnerabilities Preferred Qualifications • Experience with Pydantic for data validation and schema definition • Familiarity with PostgreSQL advanced features (JSONB, full-text search, etc.) • Experience with asynchronous programming in Python • Experience with Uvicorn, an ASGI web server, for Python. • Understanding of infrastructure as code (Terraform, AWS CloudFormation) • Experience with Kubernetes in production environments • Understanding of event-driven architectures and message brokers • Exposure to microservices architecture patterns • Experience with monitoring and observability tools • Contributions to open-source projects Technical Competencies Core Python • Python 3.9+ features and language constructs • Type hints and static type checking with mypy • Error handling and exception management • Asynchronous programming with asyncio • Documentation using Google-style docstrings Web Frameworks and APIs • FastAPI application development and organization • API design and RESTful principles • Request validation and response formatting • Authentication and authorization implementation • Performance optimization techniques Database • PostgreSQL schema design and optimization • SQLAlchemy ORM and Core • Query optimization and performance tuning • Transaction management • Database migrations with Alembic Testing • Test-driven development practices • Unit testing with pytest • Integration testing for APIs and databases • Mocking and fixtures • Code coverage analysis DevOps and Infrastructure • Docker containerization • CI/CD pipeline configuration • Infrastructure as code concepts • Monitoring and logging implementation • High availability patterns Development Standards Expertise The ideal candidate will demonstrate an understanding of and commitment to: • Domain-driven design principles • API-first development approach • Test-driven development • Security by design • Continuous delivery practices • Comprehensive documentation • Code quality and maintainability • Performance optimization • Error handling best practices