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Aaron Haefner Email & Phone Number

Data Scientist II at Safety National
Location: Chicago, Illinois, United States 6 work roles 3 schools
1 work email found @hms.harvard.edu 1 phone found area 651 LinkedIn matched
✓ Verified May 2026 4 data sources Profile completeness 100%

Contact Signals · 1 work email · 1 phone

Work email a****@hms.harvard.edu
Direct phone (651) ***-****
LinkedIn Profile matched
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Current company
Safety National
Role
Data Scientist II
Location
Chicago, Illinois, United States
Company size
607 employees

Who is Aaron Haefner? Overview

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Quick answer

Aaron Haefner is listed as Data Scientist II at Safety National, a company with 607 employees, based in Chicago, Illinois, United States. AeroLeads shows a work email signal at hms.harvard.edu, phone signal with area code 651, and a matched LinkedIn profile for Aaron Haefner.

Aaron Haefner previously worked as Data Science Researcher at The University Of Chicago and Research Associate at Harvard University. Aaron Haefner holds Master Of Science - Ms, Computational Analysis And Public Policy from University Of Chicago.

Company email context

Email format at Safety National

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{first}.{last}@hms.harvard.edu
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Profile bio

About Aaron Haefner

Data scientist and researcher with 6+ years of experience implementing and evaluating statistical and machine learning models for complex problems and applications in healthcare, economics, finance, and law with contributions to 20+ research studies. Passionate about building and applying data-driven tools to businesses for enterprise growth and public services for enabling equitable economic outcomes.• Proficient in Python, R, SQL, and cloud computing (AWS)• Expertise in statistical and machine learning model implementation and evaluation• Experience with natural language processing, large language models and generative AI• Strong background in healthcare, economics, and labor market analysis• Developed solutions for automating workflows and optimizing data science processesMS in Computational Analysis & Public Policy from the University of Chicago, BA in Economics & Applied Mathematics from Macalester College.Competencies• Python: PySpark, PyTorch, XGBoost, scikit-learn, Pandas, Flask, Dash, Seaborn, Jupyter• SQL and NoSQL, R, AWS, Git, Conda, Bash, GIS, QA Testing, Docker, LaTeX• Regression, Classification, Forecasting, Clustering, Time Series, Causal Inference, NLP, Neural Networks

Listed skills include Matlab, Python, Latex, Stata, and 2 others.

Current workplace

Aaron Haefner's current company

Company context helps verify the profile and gives searchers a useful next step.

Safety National
Safety National
Data Scientist II
st. louis, missouri, united states
Website
safetynational.com
Employees
607
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6 roles

Aaron Haefner work experience

A career timeline built from the work history available for this profile.

Data Scientist Ii

Current
Safety National

St Louis, Missouri, United States

Dec 2024 - Present

Data Science Researcher

The University Of Chicago

Chicago, Illinois, United States

- Analyzed billions of Medicare patient claims – constructing Spark data pipelines, developing Python and R statistical models, and preparing technical reports – for health and labor economics publications- Implemented and evaluated time series models of nurse practitioner workforce changes during 2013-2023 for healthcare staffing recommendations to meet.

Sep 2022 - Sep 2024

Research Associate

Harvard University

Boston, Massachusetts, United States

- Led data science initiatives for Medicaid and Medicare grant applications, resulting in a $250,000 award used to hire researchers and expand computing resources- Leveraged XGBoost for patient risk stratification and cost optimization, identifying treatment alternatives for high-risk patients with 25% potential cost savings- Engineered a DynamoDB.

May 2018 - Jul 2022

Analyst

Pearl Meyer

Greater Boston Area

- Supported consultants in designing compensation strategies that drive talent retention and performance through peer group development, market benchmarking, and regression analysis

Sep 2017 - May 2018

Summer Business Analyst

Ally Financial Group

- Optimized loan agent operational workflow and case distribution logic, reducing case resolution time by 20% and presented and defended recommendations to a 50 person department including managers and directors

May 2017 - Aug 2017

Teaching Assistant, Computer Science

Macalester College

St Paul, Minnesota, United States

- Assisted professors in introductory computer science classes (python) with reviewing and grading code submissions for 75+ undergraduate students

Sep 2015 - May 2017
Team & coworkers

Colleagues at Safety National

Other employees you can reach at safetynational.com. View company contacts for 607 employees →

HM Hosam Mohamed Hosam Mohamed Colleague at Safety National Cairo, Cairo, Egypt, Egypt View → JS Jeanne Snyder Jeanne Snyder Colleague at Safety National St Louis, Missouri, United States, United States View → RR Rch Royalcare Rch Royalcare Colleague at Safety National Coimbatore, Tamil Nadu, India, India View → NO Nathan Owens Nathan Owens Colleague at Safety National St Charles, Missouri, United States, United States View → PK Paula Kilen Paula Kilen Colleague at Safety National Greater St. Louis, United States View → NC Noreen Cruz Noreen Cruz Colleague at Safety National Los Angeles, California, United States, United States View → RT Ryan Tesson Ryan Tesson Colleague at Safety National Arnold, Missouri, United States, United States View → SD Sabrina Dsilva Sabrina Dsilva Colleague at Safety National Mumbai, Maharashtra, India, India View → 王 王中华 王中华 Colleague at Safety National Dallas-Fort Worth Metroplex, United States View → NT Nicole T. Nicole T. Colleague at Safety National Greater St. Louis, United States View →
3 education records

Aaron Haefner education

Bachelor Of Arts (B.A.), Economics

Macalester College

Activities and Societies: Omicron Delta Epsilon, International Economics Honors SocietyAdvanced Coursework: Advanced Econometrics Applied.

Education record

Homestead High School
FAQ

Frequently asked questions about Aaron Haefner

Quick answers generated from the profile data available on this page.

What company does Aaron Haefner work for?

Aaron Haefner works for Safety National.

What is Aaron Haefner's role at Safety National?

Aaron Haefner is listed as Data Scientist II at Safety National.

What is Aaron Haefner's email address?

AeroLeads has found 1 work email signal at @hms.harvard.edu for Aaron Haefner at Safety National.

What is Aaron Haefner's phone number?

AeroLeads has found 1 phone signal(s) with area code 651 for Aaron Haefner at Safety National.

Where is Aaron Haefner based?

Aaron Haefner is based in Chicago, Illinois, United States while working with Safety National.

What companies has Aaron Haefner worked for?

Aaron Haefner has worked for Safety National, The University Of Chicago, Harvard University, Pearl Meyer, and Ally Financial Group.

Who are Aaron Haefner's colleagues at Safety National?

Aaron Haefner's colleagues at Safety National include Hosam Mohamed, Jeanne Snyder, Rch Royalcare, Nathan Owens, and Paula Kilen.

How can I contact Aaron Haefner?

You can use AeroLeads to view verified contact signals for Aaron Haefner at Safety National, including work email, phone, and LinkedIn data when available.

What schools did Aaron Haefner attend?

Aaron Haefner holds Master Of Science - Ms, Computational Analysis And Public Policy from University Of Chicago.

What skills is Aaron Haefner known for?

Aaron Haefner is listed with skills including Matlab, Python, Latex, Stata, Data Analysis, and Statistics.

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