Develop, maintain, and optimize responsive websites and web applications. Write scalable code, integrate APIs and third-party services, ensure cross-browser/device compatibility, implement security best practices, improve performance and SEO, troubleshoot and upgrade sites, and participate in code reviews and team collaboration.

Develop, maintain, and optimize responsive websites and web applications; write clean scalable code; integrate APIs; ensure performance, SEO, security, cross-browser/device compatibility; debug and participate in code reviews.