· Professor, Columbia University2021–
· Associate Professor, Columbia University2013–2021
· EMC-Endowed Chair Professor Group (Adjunct), Tsinghua University2013–2016
· Assistant Professor, Columbia University2008–2013
· Technical Consultant, Microsoft Research Silicon Valley2008–2012
· Postdoctoral fellow, Microsoft Research Silicon Valley2007–2008
· MS in Computer Science, Stanford University
· PhD in Computer Science, Stanford University
· BS in Computer Science, Tsinghua University