Architect, develop, and maintain full-stack applications using modern frameworks (e.g., TypeScript/React, Node.js, Python). Design and implement scalable backend services with AWS (Lambda, API Gateway, DynamoDB, S3, ECS, etc.). Collaborate with cross-functional teams to define, design, and deliver new features. Ensure applications meet high standards of performance, responsiveness, and security. Lead code reviews, mentor junior developers, and promote best practices. Build and maintain CI/CD pipelines; monitor systems for reliability and performance. Stay current with emerging technologies and propose innovative solutions.