Sara (Yun) Song

Data professional with 5 years of experience in modeling, sales/marketing/product analytics, and reporting. Experience with executive decision support, technical leadership, consistently delivering high-quality results, mentoring junior team members, and coordinating with other business functions.

SUMMARY OF SKILLS

Communicating with stakeholders, leading team members to create data pipelines, tables, and dashboards for different audiences, and leveraging these for analyzing trends.
Support C-level decision making with reports on revenue sources, company growth and competitor analysis, and automating reports for real-time reporting.
Develop metrics for business objectives and evolve them over time to match changes to infrastructure and business requirements.
Build machine learning models (e.g. classification, time series) and data pipelines to predict risk and forecast capacity and needs.
Use statistical methods (e.g. A/B testing, power analysis) and data-mining techniques (e.g. clustering) to optimize spending and identify highest-value opportunities.

EMPLOYMENT

Data Scientist at DigiCert, Inc. May 2018 to Present

Lead data-mining project to group 310k customers using unsupervised clustering by product use and market share. Identified high-value clusters (of 20 and 500 customers) to target marketing efforts.
Forecast customer retention with boosting + classification predictive analytics; achieved 70% precision and 90% accuracy. Model used monthly by sales team to identify customers likely to switch to a competitor.
Lead project to diagnose and fix major issue in Salesforce / Oracle data pipeline. Identified $1.6M in uncollected revenue. Project had thirteen members across four departments.
Crisis response for security event affecting 50k customers using Python automation. Acted for CEO & EVPs, coordinated Data Engineering team, met strict deadline.
Developed and deployed automated staff needs forecast using Facebook Prophet and the SARIMA model. Daily forecast is within 2% error, used daily to assign employee tasks.
Use A/B testing and statistical modeling + power analysis to optimize $3M annual digital marketing spend. Model eliminates under-performing ads and has increased ad impact by 30% and decreased cost by 40%.
Analyzed >$120M of 2020 customer retention opportunities. Reported to CEO/CFO, used in developing 2020 business plan.
Combined five system databases (513M records) into single data mart. Reduced data renewal time by 20x; data mart used company-wide (1600+ employees).

Data Analyst at Overstock, Inc. (MSBA Capstone Project) May to Dec 2018

Forecast call-center staffing needs based on calls to optimize customer support operations. Model achieved 93% accuracy; presented results to company management.

Business Development at Mineral Resource International, Inc. Nov 2016 to Dec 2017

Researched new marketing strategies, analyzed economic data for marketing potential in China, and built business relationships with Chinese food & beverage companies.
Cooperated with research institutes to evaluate product uses for product analysis.

Customer Service at WEX Inc. May 2016 to Nov 2016

Solved customer issues with smart cards

Project Manager at Junior Achievement (Non-profit Organization) Sept 2013 to Jan 2014

Recruited (15 students), organized events, fund-raised, and negotiated with school
Named “Excellent Career Go Project Manager” for the year
Project received “Award of Excellence”

EDUCATION

MS in Business Analytics from University of Utah 2017-2018

GPA 3.88; Fall 2018 top 1 graduate student (Academic Excellence Award)
Graduate Fellowship for exceptional merit and leadership potential

BS in International Economics from Weber State University 2014-2016

GPA 3.6; Mathematics minor

Bachelor of Economics in Investments from Shanghai Normal University 2012-2014

Top 1 student 2012, top 1 student 2013

AWARDS & PROJECTS

Women in Data Science Utah 2019 & 2020

Organized conference, invited speakers, developed website, handled marketing
Conference filled all slots (20 speakers) and sold out (150 registrations)

Research Paper on impact of SNAP benefits 2016

Studied impact on health care spending among low-income people
Published by the WSU Center for the Study of Poverty and Inequality

Stock Analysis and Trading Project 2016

Used Excel and Mathematica to analyze stock data, wrote program to trade stocks
Earned $5k in six months on under $10k invested

Top 7 Award in Weber Business Plan Competition for “Pet Heaven” 2015

Bilingual business plan, market analysis, and revenue projections for pet funeral service

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