Lead principal engineer of the Intuit Kubernetes Service(IKS). Drove, designed and built multiple critical system from scratch such as HPA, metrics collection, Prometheus, AI powered autoscaling and resources allocation. multiple system from scratch. Hands on Java, Golang and Python with Jupyter lab. Deep experiences on Kuberenets, Docker, AWS, Spring-Boot, Prometheus etc.

Tech lead of eBay Cloud PaaS team which owns the entire eBay Platform as A Service.

Designed, implemented and manage VM based Cloud Platform(Altus).

Adapted K8S, docker, kafka, zookeeper etc. for using in the eBay PaaS.

Designed and Implemented deployment orchestration engine which unified all deployments and provided same user experiences on VM based, K8S based container or hybrid cloud on GCP.

Designed multiple customized resources and controllers to coordinate K8S with eBay existing system and orchestration engine.

Designed application errors machine learning system, which makes developers addressing issues never so easy.

Hugh improvements on 95% software deployment time taken by Altus, which was reduced from 2mins to 20secs and software downloading time from 10minutes to 1min.

Improved system reliability from 96% to 99.5%.

Massive improvements on reliability after my performance tuning on Quartz scheduler, which improved maximum running jobs from 100 to 500 at same time.

My article about this http://www.ebaytechblog.com/2016/01/14/performance-tuning-on-quartz-scheduler/

Tech lead of eBay Framework(Raptor) team which owns high performance tuning and site speed for eBay.

Initiated two widely used site speed tools in eBay and PayPal, SiteSpeed Dashboard and eSpeedy

Massive improvements of JSP runtime on Raptor framework

Decreased the raptor server startup time from more than 5 minutes to 1 minute

Built the second generation of Raptor framework

Tech lead of eBay Framework team which owns the web resource and raptor performance.

Significant performance achievements of Raptor app startup on OSGi. Reduced the time from 10mins to 1min

Built up the first version of Site Speed Dashboard for eBay use Hadoop and real time data tracking and analyzing technologies

Developed web resource framework for eBay web developers

Third party software provider for sellers on the world largest online e-commerce C2C platform.

Designed and implemented item compliance scanning tools for Taobao sellers

Built Item picture slideshow IOS APP for Taobao items

Item description builder for Taobao sellers

Inventory management software