Lead Python Developer - Freelance

Company Description Aarohaan SAS is dedicated to providing specialized services in key sectors to help companies and small businesses grow. We collaborate with small firms to support their business development through end-to-end solutions with minimal client efforts. Our services include recruitment and hiring, channel partnership, sales, and product services, as well as personnel management. Our core belief is to partner for success, ensuring mutual growth and prosperity. Role Description : Develop and maintain scalable, asynchronous REST and WebSocket APIs using FastAPI (or Flask/Litestar) Write clean, well-documented, and type-safe Python code with strong OOP practices and typing discipline Design and manage data models using SQLAlchemy or similar ORMs for both relational and NoSQL databases Ensure high availability, reliability, and performance of backend services Collaborate with DevOps to build, test, and deploy services via CI/CD pipelines (GitHub Actions or GitLab CI) Implement feature-branch workflows, follow conventional commits, and conduct peer code reviews Write and maintain unit, integration, and functional tests for backend services Monitor and resolve issues in production APIs and services Must-Have Skills: 5–7 years of professional backend development experience Advanced experience with Python 3.11+, Proficient in building high-performance APIs using FastAPI (or Flask/Litestar) Solid understanding of Git, including feature-branch workflows, PR management, and version control hygiene Practical experience with CI/CD pipelines — especially GitHub Actions, Docker-based builds, and deployment automation Strong in SQL and hands-on experience with at least one relational database (PostgreSQL, MySQL) Familiarity with NoSQL stores (MongoDB, Redis, etc.) Experience with SQLAlchemy, SQLModel, or equivalent ORMs in asynchronous setups Show more Show less