Designed and developed a scalable multi-tenant SaaS platform with AI-powered features, including conversational agents and automated content generation. Architected high-performance backend systems and RESTful APIs to support real-time engagement and notifications. Implemented robust infrastructure with a focus on scalability, security, and reliability. Optimized system performance using Redis caching and MySQL query optimization, reducing server costs and improving response times. Applied Test-Driven Development (TDD) practices and led backend architecture decisions, including code reviews