* Leading engineer to designing and implementation a large scale ML inference platform on AWS & Kubernetes

* Development and maintenance of high-volume cache and subscription services for Alexa on AWS, handling over 10,000 TPS that serves the customer all over the world.

* Innovated by designing and implementing an Alexa subscription service for internal customers, encompassing infrastructure and API development, which streamlined service delivery.

* Integrating various internal services (storage, authentication, authorization, pseudonymization) into team products, significantly enhancing product functionality and security.

* Demonstrated leadership by mentoring entry-level engineers, guiding project direction, and ensuring real-time product availability, which contributed to the team's high performance and product success.*

Creating machine learning and computer science algorithms. Building back end servers and testing frameworks.

* configuring, managing and maintaining the high performance computing cluster located at Massachusetts Green High Performance Computing Center (MGHPCC)

* writing script for automatically verifying clients’ identities on LDAP server, collecting clients’ usage info., package dependency info, batch producing nodes configuration files, and batch producing parallel and dependent SBATCH submitting files.

* do seminar and reply emails for teaching clients Slurm, programming, running service and Linux technology.