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I'm an experienced analytics data scientist with excellent critical thinking skills and more than 8 years experience in billions size dataset manipulation, quantitative modeling and product analytic fields. Proficient in Python, R, SAS and all SQL languages, I'm good at finding data patterns, building key metrics, creating and automating business dashboards which help senior leadership or stakeholders make data-driven decisions. My dual masters in statistics and economics endow me with solid foundation in math and business and my ability of translating complex data cases into practical problem solving make me become the bridge connecting engineers, scientists, operations and product managers. My passion with data and products constantly encourage me to propose innovative and strategic insights.
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Data ScientistApple Aug 2019 - PresentCupertino, California, UsExperienced data Scientist working at Apple Maps, expertise in analytics data instrumentation, data quality monitoring and anomalies deep dive, logging validation and test automation, metrics and data pipelines design and building. Have been driving multiple projects across broad business domains involving new features, search, autocomplete, placecard, findmy, usage etc. -
Senior Data AnalystCapital One Dec 2017 - Aug 2019Mclean, Va, Us• Manipulated and leveraged large bank customer, account and transaction data sets across various platforms and databases (Hadoop, AWS, Oracle, Snowflake, Postgres, Teradata etc.) to implement end-to-end analyses on data quality and flow issues in support of regulatory compliance (e.g. AML, Basel) and the validation of risk model inputs.• Owned and automated defect data monitoring and anomalies detection BAU reports using Python and SQL to control risk as first line of defense and for audit requests remediation and data-driven decision making purposes. • Onboard data to AWS cloud environment from On-Prem platform and troubleshot ETL pipeline issues as data steward. • Worked in cross-functional agile team and liaised between engineers and end-users to communicate insights and solutions. -
Analytic Solution SpecialistThe Npd Group Sep 2016 - Oct 2017Port Washington, Ny, Us• Led and owned client projects from concept design, opportunities identification to final solution deliverables. Used SAS and SQL to manipulate large data sets across industries and created analytic reports with key metrics and custom models. Interpreted and presented results to clients and solved their business issues, which brought 3 million in revenue for team.• Created an algorithm in R that automates trading area segmentation under specific data releasingrules, which was popularized and proved revenue generating while freeing hundreds of labor hours.• Implemented PCA, regression and time series models in SAS and R for forecasting, in-market testand site selection cases. Validated model inputs including point-of-sales and macroeconomics data.• Applied VBA and Linux shell scripts to automatize data aggregation and expedite QC process. -
Quantitative Research Assistant Of Institute For Social And Economic Research And PolicyColumbia University In The City Of New York Dec 2015 - Nov 2016New York, Ny, Us• Joined three project about healthcare, migration and job mobility and mainly took charge of all the quantitative analysis of the projects using STATA, R and SAS.• Conducted sequence and cluster analysis in R about job mobility and optimized the job patterns.• Applied time-varying and personality-varying measures to calculate community level and household level migration related ratios. • Visualized the spatial data and presented colorful plots and heat maps.• Built random effect and between effect multivariate regression models with the different periods panel data.• Wrote the HTML scripts to update and polish the website. -
Project Management Intern, Dept. Of ManagementUnited Nations Jul 2016 - Aug 2016New York, Ny, Us -
Investment AnalystGreenlake Capital Llc Apr 2016 - Jul 2016New York, Ny, Us• Carried out text mining quantitative analysis to classify the investor reports and designed hypothetic scenarios based on macro conditions.• Applied hedge fund trading strategies to evaluate investment performances and presented portfolio advices to clients. • Managed the Soft Hedge database. -
Summer Analyst, Investment BankingGoldstate Securities Co., Ltd. May 2015 - Aug 2015Shenzhen, Guangdong, Cn• Followed IPO, M&A and Refinance projects, conducted due diligence, market research, analyzed financial statements. Wrote pitch book, industry report and updated the database.• Assisted to modify valuation and pricing model analyzing DCF, DDM, LBO and WACC -
Part-Time AnalystMckinsey & Company Greater China Jun 2014 - Jul 2014Us• Did the retail store-check, collected POS data, interviewed the sales and helped clients get in-depth knowledge on the counts and visuals of products. • Offered budget and profit forecast advice for a supermarket -
Assistant ConsultantA.T. Kearney May 2014 - Jun 2014Chicago, Illinois, Us• Provided business strategy and prepared presentation for a chain BBQ to enter secondary cities.Did market lit search, processed competitors' data and performed site strategic positioning,SPACE and SCP analysis. • Managed the market entry risk and conducted P&L analysis. -
Strategy Research AssistantChina Europe International Business School (Ceibs) Sep 2013 - Apr 2014Shanghai, Cn• Conducted Fundamental Analysis of Chinese ST firms. Calculated the liquidity ratios and revenue growth rates. • Assisted to do CCA, develop and test a person–pay interaction model.• Looked through the annual reports and industry analysis of the companies. -
Credit Risk Analyst (Intern)Industrial And Commercial Bank Of China Jan 2013 - Feb 2013Beijing, Beijing, Cn• Assisted in stress testing and sensitivity analysis. • Evaluated the credit risk, audited the capital requirements, checked the financial history and supervised the monthly loan.
Sijin Wang Skills
Sijin Wang Education Details
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Columbia UniversityStatistics -
University Of MichiganEconomics
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Fudan UniversityEconomics
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Ku LeuvenEconomics
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Fudan UniversityJournalism
Frequently Asked Questions about Sijin Wang
What company does Sijin Wang work for?
Sijin Wang works for Apple
What is Sijin Wang's role at the current company?
Sijin Wang's current role is Data Scientist.
What is Sijin Wang's email address?
Sijin Wang's email address is si****@****ple.com
What is Sijin Wang's direct phone number?
Sijin Wang's direct phone number is +173468*****
What schools did Sijin Wang attend?
Sijin Wang attended Columbia University, University Of Michigan, Fudan University, Ku Leuven, Fudan University.
What are some of Sijin Wang's interests?
Sijin Wang has interest in Social Services, Education.
What skills is Sijin Wang known for?
Sijin Wang has skills like R, Microsoft Excel, Financial Analysis, Stata, Research, Matlab, Leadership, Sql, Python, Sas, Management, Data Mining.
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