Jingya Liu
Roswell,GA
Summary
Experienced Data Science Professional with a demonstrated history of working in the product analytics and marketing analytics. Skilled in Statistical Modeling, Data analysis, visualization and reporting, programming in SQL, Pythons and R.
Overview
10
10
years of professional experience
Work History
Lead Data Analyst, Search and Recommendation
Upwork Inc
06.2022 - Current
- Improve Search and Recommendation product to enforce Next-Gen match on the platform.
- Deliver undiscovered insights to key partners through A/B tests, dashboards, and strategic analyses that compel changes in corporate strategy and product decisions.
- Drive analytics projects from initial concept to execution: translate a business question into an analytical framework, generate insights through analysis, and effectively communicate recommended actions.
Senior Product Analyst, R&D
Root Insurance
07.2021 - 01.2022
- Lead AB test design to optimize customer onboarding experience; Generate, build, and validate the hypothesis of product ideas
- Lead Business Intelligence work: Develop SQL schemas to optimize functionality and productivity
- Leverage data from various sources; Build, and present executive-level dashboards with KPI clearly defined; Guide business leaders on quantifying incrementality and profitability of the R&D products
- Proposed and applied Survival Analysis using Python to understand customer retention and provided actionable advice to operational team;
- Partner with Product and Engineer teams to solve problems and identify opportunities for marketing, growth, and other R&D initiative
Data Scientist
MarkeTeam LLC
07.2016 - 07.2021
- Developed Predictive Models in Python (regression, tree-based model, SVM, discriminant analysis and survival analysis) used to deepen relationships, strengthen longevity, and personalize interactions with customers
- Developed Feature Selection process from scratch in R coupled with SQL procedures, with a combination of feature engineering and Machine Learning techniques (Random Forest, Gradient boosting, Penalized regression)
- Profiled interpretable customer segmentations via Cluster Analysis
- Make Market targeting recommendation and improve ROI by 5%
- Improved comprehensive Audience Expansion by introducing 'two-step' sampling approach, to label reliable set of negative groups and train classifier feature
Data Analyst
MarkeTeam LLC
07.2016 - 12.2019
- Lead analytical services for two nonprofits clients to achieve their fundraising goals
- Performed End-to-end Data Science: defining metrics, developing marketing tests, building predictive models, conducting deep dive analyses and ad-hoc analyses; present insights to stakeholders for future strategies
- Designed and developed ETL processes using MS SQL Server Stack
- Developed SQL and Batch scripts to improve data processing and decrease time-to-value by 25%
- Performed data munging and data mining using Python and R
- Conduct AB test and achieved 5% increase on campaign level conversion rate
Data Analyst /Epidemiologist
GA Dept. of Public Health
06.2015 - 07.2016
- Managing patient data with applied data warehouse principles and data modeling methodologies
- Investigated data discrepancies, articulated them to support data visualization reporting
Education
MS - Statistics, MPH in Biostatistics
University of Georgia
Athens, GA01.2015
BS - Bioengineering
Beijing Institute of Technology
Beijing, China01.2012
Skills
- SQL
- Python
- R
- Looker
- PowerBI
- GIT
- Google App Script
Timeline
Lead Data Analyst, Search and Recommendation
Upwork Inc
06.2022 - Current
Senior Product Analyst, R&D
Root Insurance
07.2021 - 01.2022
Data Scientist
MarkeTeam LLC
07.2016 - 07.2021
Data Analyst
MarkeTeam LLC
07.2016 - 12.2019
Data Analyst /Epidemiologist
GA Dept. of Public Health
06.2015 - 07.2016
MS - Statistics, MPH in Biostatistics
University of Georgia
BS - Bioengineering
Beijing Institute of Technology
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