Jiong Chen

Jiong Chen, Data Science Manager, CVS Health

Graduation: 2015
Current Title: Data Science Manager, CVS Health

Career Highlights:

  • Designed and developed personalized product recommendation engine
  • Developed propensity model, uplift model and response model to accurately target customers for different campaigns
  • Led data engineers to implement and productionalize machine learning and statistical models

“The statistics program not only offers a rigorous academic training for statistical and machine learning theory but also a great opportunity to meet and network with intellectual minds.”

Youzhu Liu, Senior Analyst at Citi

Graduation: 2016
Current title: Senior Analyst at Citi

Career Highlights:

  • Delivered PNL analysis, forecasting, customer segmentation and other deep business analysis in Citi Credit Card Existing Customer Management Programs using R/SAS/SQL
  • Collaborated with modeling, marketing and risk team in Citi Personal Installment Loan program: responsible for designing tests, optimizing targets, tracking program performance and providing business insights to help in decision making process.
  • Created data visualization and KPI tracking in collaboration with project teams.

“Columbia University Stats program helped me gain more academic knowledge, introduced me to lots of intellectuals and kept me updated with different cultures. It gave me many opportunities in the early stage of my career.”

Frank Lu, General Manager, Changjiang Futures, Shanghai

Graduation 2014
Current title: General manager of options and structural finance, Changjiang Futures, Shanghai

Career highlights:

  • Algorithmic trading equities and equity derivatives in NYC.
  • Option market making in commodities options in Chicago.
  • Both exchange and OTC option business in Shanghai.

“It was my great pleasure to graduate from the MA Statistics program, where I learned practical Statistics knowledge, enhanced various skills and met inspiring minds.”

Dennis Lyubyvy, Algorithm Engineer, Afiniti

Dennis Lyubyvy, Algorithm Engineer, Afiniti

Graduation: May 2015
Current title: Algorithm Engineer, Afiniti

Career highlights:

  • Developed models that recognize patterns in call center agents performance and optimize sales and customer satisfaction
  • Build set of interactive data visualization tools using R Shiny technology
  • Launched my own company at the age of 24; my current position allows me to combine my knowledge of statistics and data science with prior business experience

“The MA program in Statistics at Columbia offers a wealth of opportunities for anyone who is willing to build a career in data science.”

Jundong He, Product Manager, Tourico Holidays

Jundong He, Product Manager, Tourico Holidays

Graduation: 2015
Current Title: Product manager, Tourico Holidays

Career highlights:

  • Intern at IZP Technology building the new F2C E-Commerce platform “Yiwu Global” 
  • Partner of ISOWAVE engaging in the Asian Carp project
  • Product manager at Tourico Holidays, managing more than 200 Hotel profiles in SW China

“Columbia’s life gave me the chance to go places and become a person I’d never dreamed I’d be.”

Jiun Kim, Data Scientist at Audible

Jiun Kim, Data Scientist at Audible

Graduation: 2014
Current title: Data Scientist at Audible, an Amazon company

Career highlights: Jiun is currently a data scientist at Audible. With a vast amount of data, my days are filled with designing, developing, and evaluating predictive models for interesting research topics. Previously she worked as a statistical consultant at the United Nations. There, she developed statistical/econometrics models, of which are published, to predict uncertainties such as disaster risk and unemployment rates, and understand the statistical inferences of these impacts on human behavior and socioeconomic segmentation. She also worked for a financial firm in London and government offices in Korea.

“Statistics M.A. program at Columbia equipped me with not only statistical knowledge and programming skills but also strategic and critical thinking. Most importantly, friendship and social network with brilliant and inspiring minds.”

Timothy Haley, Associate, JP Morgan

Timothy Haley, Vice President, JP Morgan

Graduation: 2014
Current title: Vice President, JP Morgan

Career highlights: 

  • Promoted to Manager at Fox Cable Networks and most recently to Vice President at J.P. Morgan
  • Developed statistical models and a modeling codebase for Asset & Wealth Management at J.P. Morgan
  • Developed statistical models for MEC (a GroupM company), and presented analyses to clients

 “The M.A. in Statistics program at Columbia challenged me intellectually and provided me with the core skills necessary to obtain, and succeed at, my current and previous jobs in statistical modeling.”


Hao Hu, Staff Data Science Expert at DiDiChuXing

Graduation: 2013
Current tile: Staff Data Science Expert at DiDiChuXing
Career highlights:
  • ​​Currently leading a team of data scientists at DiDiChuXing, the world’s largest ride hailing online platform, to evaluate margins of supply and demand, pricing efficiency, and ROI of market campaign, using statistics and econometrics models and incentive and micro-economics theory.
  • Pre​​viously worked as an Algorithm Engineer Manager at Meituan, leading an algorithm engineers’ team to develop cutting-edge Machine Learning or statistical learning algorithms to estimate real-time ETA and do counterfactual analysis.
  • I have deep knowledge of multisided-platform theory, machine learning techniques and management, pricing mechanisms, and data visualization. ​​

“The M.A. program at Columbia prepared me with theoretical tools to tackle industrial problems. Many international students were merely good at recitation rather than a heartfelt feeling of theories and their applications until they got the intense and intuitive training here at Columbia University. The program really gives its graduates a competitive edge in the quant industry.”


Eric Feder, Director, Data Science 2U

Graduation: 2013
Current title: Director, Data Science at 2U

Career highlights: 

  • Got to live out one of my dreams and work for a Major League Baseball team when I interned for the New York Yankees as statistical analyst for a year.
  • While working at TheLadders, I had the privilege of mentoring a summer intern. I felt tremendous satisfaction from seeing him learn and grow, and loved passing some of my knowledge and experience on to him.
  • After working with product managers and software engineers on a new website feature for many months, it felt great to finally roll it out to our users and to see how much it improved their experience.

“At Columbia, I learned both the theories and the practical skills that I needed to find a great job and start contributing immediately, and which I continue to use me to this day.”

Eric Novik, Co-founder, CEO, Stan Group Inc.

Eric Novik, Co-founder, CEO, Stan Group Inc.

Graduation: 2012
Current title: Co-founder, CEO, Stan Group Inc.

Career highlights: 

  • In 2010, while working on my MA in Statistics degree I started Risktail, Inc., an options analytics startup for retail traders. 
  • Spent two years as a VP in the Barclays Equity Derivatives Technology group.
  • More recently, I was a Data Scientist at TIBCO Spotfire.
At Columbia, “besides learning a lot about Statistics and the R language, I have met some great people who have become friends over the years.”

Takayoshi WiEsner, Executive Director, Head of Strats in Global Capital Markets at Morgan Stanley

Graduation: 2008 (QMSS), 2011 (Statistics)
Current Title: Executive Director, Head of Strats in Global Capital Markets at Morgan Stanley

Career highlights:

  • Currently leading a team of quants to help institutional clients raise capital, provide advisory services and develop sophistical pricing models and predictive models.
  • Previously worked as a credit portfolio risk manager and analyzed multi-billion dollar investment/trading portfolios that were composed of complex securities and derivatives.
  • Worked as a research assistant for Andrew Nathan, Chair of Political Science Department at Columbia, while in the program. The research became the basis of his book, How East Asian Views Democracy.

“As Statistics is one of the most versatile and hottest disciplines today, it also plays an expansive role beyond the traditional domain of mathematical science at Columbia. The M.A. programs provide numerous opportunities to learn the application of statistical techniques and concepts in interdisciplinary fields varying from data science and social sciences to finance and actuary so that a student’s educational experience can be tailor-made for his or her career goal. Since Columbia is one of very few academic institutions that excel in all the aforementioned fields, such cross-department learning experiences are intellectually stimulating and rewarding even to the traditional students of statistics.”

Long Wei, Assistant professor of Economics, Tulane University

Long Wei, Assistant professor of Economics, Tulane University

Graduation: 2010
Current title: Assistant Professor of Economics at Tulane University

Career highlights: 

  • Concentration on econometrics and time series.
  • Publication in the Journal of Econometrics, the top journal in econometrics.
  • Several other publications on peer reviewed journals such as Economics Letters and Empirical Economics.
The MA in Statistics program at Columbia is “a well-organized program which inspires to understand the world in a more insightful and rational way…The M.A. program from the Department of Statistics in Columbia helped me to build up both statistical modeling and R coding skills. It also inspired me to pursue higher degree in economics and choose econometrics as my main field.”
David Lee, Senior Vice President, Chief Data Officer, Medidata Solutions

David Lee, Senior Vice President, Chief Data Officer, Medidata Solutions

Graduation: 2004
Current Title: Senior vice president, chief data officer, Medidata Solutions

Career highlights: 

  • As Chief Data Officer at Medidata Solutions, David provides vision and leadership for all Medidata initiatives related to data management, innovative analytics, and related business development.
  • Previously, David was VP of the Science division at AIG, where his team developed proprietary predictive models for insurance markets.
  • David is the recipient of the 2012 SAS Enterprise Excellence Award
Jonathan Steinberg, Manager, Data Analaysis and Computational Research, Educational Testing Services

Jonathan Steinberg, Manager, Data Analysis and Computational Research, Educational Testing Service

Graduation: 2003
Current title: Manager, Data Analysis and Computational Research, Educational Testing Service

Career highlights: 

  • Dissemination of research in multiple journal articles, research reports, and conference presentations
  • Participation in multi-year research projects funded by federal education agencies
  • Mentoring of fellow co-workers and graduate students pursuing careers in education

“The M.A. program enabled me to improve my statistical knowledge and programming skills as well as better prepare me for my future career development”.

Sharona Sankar-King

Graduation: 1998
Current title: EVP Head of Marketing Science BBDO New York

Career highlights: 

Sharona Sankar-King joined BBDO New York in September 2016 in the newly created role of EVP, Head of Marketing Science with the goal to deepen and expand BBDO New York’s data and analytic capabilities. Sharona brings more than 20 years’ experience to her new role. Those experiences include working with clients and products in telecommunications, retail, travel, financial services, healthcare, pharma, automotive, packaged goods, eCommerce, energy, technology and more. She was most recently Managing Partner, North America Practice Lead of Digital & Advanced Analytics, at MEC where her extensive experience in developing and productizing strategic analytic solutions for top tier clients allowed her to develop MEC’s digital attribution platform. 

Prior to working at MEC, Sharona served as VP, Strategy and Analytics, at Rapp Collins Worldwide and Group Director of Digital Analytics at Experian. Sharona earned her Masters of Applied Statistics from Columbia University and considers herself as much of a Marketing Strategist as a Statistician/Data Scientist.

“The M.A. program at Columbia prepared me for the real application of advanced analytics, which gave me the foundation for my career.”


If you’d like to be featured on this page, please send an e-mail to Dr. Anusha Shrivastava, Director, Career Development and Alumni Relations, at In the subject line, please put “Alumni profile for department website.”