Hands-on experience in performance, high availability, scalability, system architecture, system management, networking, troubleshooting and skilled in automated operations, OAM analytics and capacity planning activities across an entire infrastructure stack with multiple server components. * Deployed and managed large-scale backend services in AWS for global project and coordinate the team based in US, China. * Experienced in mentoring junior system engineers and guide team members in troubleshooting, define SOP and to make things easily-maintained and reuseful.