Sr./ Lead Backend Developer

Job Title: Sr./ Lead Backend Developer (Python / FastAPI)

Location – Chennai (Onsite)

Experience: 5-12 Years

Job Summary We are looking for an experienced Backend Developer with strong expertise in Python and FastAPI to design and build scalable, secure, and high-performance backend systems. The ideal candidate will have hands-on experience in API development, database design, system architecture, and deploying highly available applications, preferably within fintech or regulated environments.

Key Responsibilities

• Design, develop, and maintain backend services using Python and FastAPI.
• Build and manage secure, scalable RESTful APIs, WebSockets, and microservices.
• Design and optimize database schemas using PostgreSQL, MySQL, or MongoDB.
• Implement authentication, authorization, and secure coding practices aligned with compliance standards.
• Optimize system performance, reliability, and scalability.
• Write clean, well-documented code with unit and integration tests.
• Collaborate with Frontend, DevOps, QA, and Product teams in Agile sprints.
• Support deployment, monitoring, and troubleshooting of production systems.

Required Skills & Experience

• 5+ years of backend development experience.
• Strong proficiency in Python and FastAPI framework.
• Experience building and managing REST APIs, WebSockets, or gRPC services.
• Strong knowledge of database design, query optimization, and ORM tools.
• Experience with asynchronous programming and scalable system design.
• Familiarity with microservices architecture and API lifecycle management.
• Understanding of CI/CD pipelines, Docker, and cloud deployment environments.
• Knowledge of secure coding practices (JWT, OAuth, encryption, etc.).
• Experience working in Agile/Scrum teams.
• Bachelor’s degree in Computer Science or related field preferred.