Christopher Jason Halim Email and Phone Number
Christopher Jason Halim work email
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Christopher Jason Halim personal email
I am a Senior Data Scientist at Discover Financial Services, where I leverage Machine Learning and Artificial Intelligence to engineer and develop end-to-end model development for credit card acquisition risk modeling. I collaborate with various business partners, such as Credit Karma and credit bureaus, to drive revenue growth, decrease acquisition cost, and level up customer acquisition. I have saved the company millions of dollars and drive revenue growth by improving metrics such as penetration rate and approval rate from the newly-developed models that my team create.I have a master's degree in Statistics (Data Science concentration) from Columbia University, and a bachelor's degree in Risk Management, Actuarial Science, and a Certificate in Leadership from the University of Wisconsin-Madison. I also completed a Post-Baccalaureate Studies program at the University of Pennsylvania, where I gained valuable research expertise and participated in a research initiative program. I have 2+ years of experience in data science, working with various data analysis tools, such as R, Python, Tableau, SQL, and SAS. I previously work at Rokt, an E-commerce & Software Solutions company in their Analytics department as well as at American Family Insurance in their Competitive Pricing team. I am passionate about solving complex problems with data science and delivering impactful solutions. I enjoy taking initiative and working both independently and collaboratively. I am a curious, agile, and communicative individual with solid analytical and time management skills. Please reach out to me if you have any question about my profile!
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Data ScientistGreater New York Insurance CompaniesChicago, Il, Us -
Senior Data Scientist (Senior Modeler)Discover Financial Services Aug 2024 - PresentGreater Chicago Area -
Data Scientist (Modeler)Discover Financial Services Jan 2023 - Aug 2024Greater Chicago AreaCard Acquisition Risk Modeling Team: the team is responsible for driving the growth of all of Discover's credit card channels● Leverage XGBoost to engineer end-to-end model development in partnership with Credit Karma in order to improve Discover credit card penetration rate as a result of new tightening strategy due to worsening economic outlook ● Save the company millions of dollars due to the improvement in penetration rate and approval rate from the newly-developed model ● Collaborate with different business partners, such as Credit Karma, Acxiom, Experian, Equifax, and TransUnion, in order to drive revenue growth, decrease acquisition cost, and level up customer acquisition● Construct from the ground up, Tableau dashboard for model performance tracking, which is projected to save hundreds of hours of reporting work each year● Work with credit bureau to increase the matching accuracy and consistency of customer data -
Data ScientistRokt Jun 2022 - Aug 2022New York, New York, United StatesAnalytics Team● Developed and implemented high-level data visualization tools by formulating dashboard in Tableau to increase key results planning efficiency and improve key results tracking accuracy.● Initiated churn rate analysis by performing exploratory data analysis of advertisers and partners data, constructing logistic regression model, and providing modeling documentation to increase 90 days retention rate of new advertisers by 10%.● Led data solutions project by migrating data from Jira to Amazon Redshift using SQL queries of Jira data to automate Tableau reporting and enhance automated reporting success rate. -
Data Analysis ResearcherThe Legal Aid Society Feb 2022 - May 2022New York, New York, United States● Helped examine the reliability of DNA evidence samples by using advanced data analysis to assist trial lawyers in cases involving complex forensic evidence.● Examined DNA samples by applying k-means clustering to augment identification accuracy of forensic evidence.● Collaborated with fellow researchers and project managers by analyzing the sufficiency of the validation test and assessing the accuracy of mock evidence samples used in validation testing. ● Affirmed the organization's commitment to ensure that everyone has the proper access to justice.● Provided representation on criminal and civil matters in individual cases and class action lawsuits. -
Quantitative Researcher At Computational Behavioral Science LabUniversity Of Pennsylvania Feb 2021 - May 2021Philadelphia, Pennsylvania, United States -
Quantitative Researcher At Social And Behavioral Science Initiative (Sbsi)University Of Pennsylvania Feb 2021 - Mar 2021Philadelphia, Pennsylvania, United States● Conducted an independent project to research the relationship between mental health support and mental health condition during the Coronavirus pandemic by holding a survey of 30 participants and constructing R codes to analyze survey data.● Awarded Certificate of Excellence from Social and Behavioral Science Initiative (SBSI) by achieving top rating as a researcher. -
Quantitative & Data Science Research Assistant At Platt LabsPenn Medicine, University Of Pennsylvania Health System Sep 2020 - Dec 2020Philadelphia, Pennsylvania, United States● Collaborated with three researchers by scrutinizing research databases to ensure the validity of data and efficacy of projects.● Categorized different data types by creating database entries to aid the publication of a scientific paper. -
Competitive Pricing Intelligence AnalystAmerican Family Insurance May 2019 - Aug 2019Madison, Wisconsin, United StatesCompetitive Pricing Team● Assisted the conversion of RiskSync to SAS for 14 CONNECT AUTO states. ● Validated American Family Insurance premium rates in Utah and Minnesota and compare them with the competitors.● Constructed the comparison of Advance Inforce rates between Q4 2018 and Q2 2019.● Completed 2 days of Python training camp● Determined the Order of Rating calculation for a competitor so that American Family Insurance could set the most competitive insurance premium rates in the industry -
Competitive Pricing Intelligence AnalystAmerican Family Insurance May 2018 - Aug 2018Madison, Wisconsin, United StatesCompetitive Pricing Team● Assisted the conversion of RiskSync to SAS to save American Family Insurance more than $80,000 in annual expenses● Constructed SAS codes for 14 different states by modifying Wisconsin home state code to predict the insurance quote of other competitors for those states● Determined the competitor matrix of other companies as in comparison with American Family Insurance so that American Family Insurance can provide the most competitive insurance rates in the industry -
Academic TutorThe Division Of Diversity, Equity, And Educational Achievement Aug 2017 - Aug 2018Madison, Wisconsin, United States● Provided tutor to students who are facing adversity and hardship; such as students who fall into the low-income category. ● Ensured that all students are able to receive the same level of education regardless of their backgrounds.
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Cashier And ShopkeeperWisconsin Union Oct 2016 - May 2018Madison, Wisconsin, United States● Provided the best experience for customers by keeping the store fully stock and giving the most satisfactory service.● Assessed the number of items and goods to ensure that all store aisles were fully stocked.● Interacted with Patrons at the Wisconsin Union to establish the most pleasant customer experience.
Christopher Jason Halim Skills
Christopher Jason Halim Education Details
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Statistics (Data Science Concentration) -
Post-Baccalaureate Studies -
Actuarial Science
Frequently Asked Questions about Christopher Jason Halim
What company does Christopher Jason Halim work for?
Christopher Jason Halim works for Greater New York Insurance Companies
What is Christopher Jason Halim's role at the current company?
Christopher Jason Halim's current role is Data Scientist.
What is Christopher Jason Halim's email address?
Christopher Jason Halim's email address is ch****@****las.org
What schools did Christopher Jason Halim attend?
Christopher Jason Halim attended Columbia University In The City Of New York, University Of Pennsylvania, University Of Wisconsin-Madison.
What skills is Christopher Jason Halim known for?
Christopher Jason Halim has skills like Leadership, Presentation Skills, Pandas, R, Data Science, Statistical Analysis, Tidyverse, Insurance, Geopolitics, Microsoft Powerpoint, Cognos, R (Programming Language.
Who are Christopher Jason Halim's colleagues?
Christopher Jason Halim's colleagues are Iva Mango, Tiffanyrose Kennedy, Sarah Chang, Yesenia Godoy, Steven Goldman, William Uziemblo, Jose Zelaya.
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