Full-Stack Python Developer

ABOUT LYFNGO TECHNOLOGIES LYFnGO Technologies is a fast-growing product-based technology company headquartered in Coimbatore. We build modern SaaS solutions that transform business operations through intelligent software. Our engineering teams work on high-performance, scalable systems serving thousands of active users daily - and we are looking for talented developers to grow with us. ROLE OVERVIEW: We are seeking a motivated Python Developer with 1+ years of professional experience to join our engineering team. You will design and build scalable backend systems, collaborate closely with cross-functional teams, and contribute to the technical direction of our core product. The role spans backend API development, database design, third-party integrations, and deployment. KEY RESPONSIBILITIES: BACKEND DEVELOPMENT • Design, develop, and maintain scalable web applications using Python with FastAPI as the primary framework. • Build production-grade RESTful APIs and GraphQL endpoints that power both web and mobile front-end interfaces. • Integrate third-party services including payment gateways, notification platforms, and ERP systems with proper error handling and retry logic. • Ensure all backend services meet performance, security, and reliability standards before every production deployment. FRONTEND COLLABORATION • Collaborate closely with React.js front-end engineers to define API contracts, align on data models, and ensure smooth integration between layers. • Optionally contribute to Node.js microservices or Backend-for-Frontend (BFF) layers where the architecture requires it. • Participate in front-end code reviews when backend-frontend coordination is critical for feature correctness. DATABASE DESIGN AND OPTIMIZATION • Design normalized and performant database schemas for PostgreSQL, MySQL, and MongoDB with attention to indexing and referential integrity. • Write complex SQL confidently: joins, aggregates, CTEs, window functions, sub-queries, and stored procedures. • Identify slow queries using EXPLAIN ANALYZE, add strategic indexes, and resolve N+1 problems generated by ORMs. • Design MongoDB aggregation pipelines for analytics, reporting, and document-centric data access patterns. CODE QUALITY AND DEPLOYMENT • Write clean, well-documented, testable code. Unit tests and integration tests are a standard part of every feature, not optional extras. • Participate in code reviews, enforce coding standards, and actively contribute to improving team development processes. • Deploy and monitor containerized applications using Docker and CI/CD pipelines such as GitHub Actions, Jenkins, or GitLab CI. • Debug and resolve production issues systematically by tracing every problem from the visible symptom to the root cause.