Professional Experiences

Facebook
08/2016 - Present. Seattle, WA
Software Engineer

VMware                                               
06/2015 - 08/2016. Cambridge, MA
Senior Software Engineer, Cloud Foundation (07/2016 - 08/2016)
Software Engineer, Cloud Foundation (06/2015 - 06/2016)
  • Project: Platform as a Service (PaaS) for Hybrid Cloud (11/2015 - 08/2016)
    • Tech lead on designing and developing a PaaS system for enterprises in hybrid-cloud environment. 
    • Built the PaaS system to automatically deploy and manage virtual machines and Docker container applications across EVO-based private cloud and Amazon Web Services. 
  • Project: Automatic Server Provisioning in Datacenters (06/2015 - 05/2016)
    • Built software to automatically discover, bootstrap, and provision servers for datacenter expansion. 
    • Shortened the server addition process from several days to <20 minutes. 
    • Released the software as part of VMware Cloud Foundation software suite. 
Microsoft
06/2012 - 05/2014. Redmond, WA
Software Engineer (in absentia from Princeton University)
Azure Cloud Networking Team (a.k.a., Bing Autopilot Team)
  • Project: Network-State Management Service (03/2013 - 05/2014)
    • Designed and built a network operating system for automatic and safe infrastructure management.
    • Deployed the system in over 10 Azure datacenters across the globe, managing over 10 thousand devices.
    • Reduced the development cost of management applications by 5 times.
    • The system is now the foundation layer of Azure's networking services to its customers (part of Azure Service Fabric).
  • Project: Automatic Latency Diagnosis in Multi-tier Web Services (06/2012 - 02/2013)
    • Designed and built a self-adapting real-time diagnosis system for high search-query latencies.
    • Integrated into Bing's index service, document service, and internal big-data analysis platform.
    • Accurately pinpointed the services and servers that caused high search latencies in several incidents.
    • Contributed to the improvement of user-experiencing latency of Bing.

Princeton University
12/2010 - 05/2012 & 06/2014 - 05/2015. Princeton, NJ
Research Assistant & PhD student in Prof. Jennifer Rexford's group
  • Project: Sprite: Scalable Programmable Inbound Traffic Engineering (06/2014 - 05/2015)
    • Designed and built a scalable distributed system to directly control the entrance point of traffic from cloud services to enterprises in per-connection granularity.
    • In collaboration with and being deployed on the campus network of Princeton University. 
  • Project: HONE: Programmable Host-Network Traffic Management (06/2011 - 05/2012)
    • Realized more effective datacenter-traffic management by extending to include Linux network stack.
    • Integrated with Verizon/Overture Networks's products for business cloud services at the edge.
  • Project: Identifying Performance Bottlenecks in CDNs through TCP-Level Monitoring (12/2010 - 05/2011)
    • Built a TCP profiler in Linux network stack for performance diagnosis of web services.
    • Deployed in the Coral content distribution network.
    • Improved the CDN's overall latency by 10% by locating and resolving its bottlenecks.

Microsoft Research Asia
12/2009 - 03/2010. Beijing, China
Research Intern in Datacenter Network group with Dr. Chuanxiong Guo
  • Project: Virtualized Datacenter Network
    • Built the control module in a virtualized data center network architecture with bandwidth guarantees. 
    • Carried out experiments in datacenters to validate link failure handling and adjustment of bandwidth guarantees.

University of Southern California
07/2009 - 08/2009. Los Angeles, CA
Research Intern in Prof. Urbashi Mitra's group
  • Project: Underwater Acoustic Communication System
    • Designed a channel estimator to improve underwater acoustic wireless communication.
    • Deployed and tested in a Naval testbed.