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John Karlen Email & Phone Number
Lead Data Scientist
at
MassMutual
LinkedIn matched
✓ Verified August 2026
3 data sources
Profile completeness 100%
Current company
Role
Lead Data Scientist
Location
New York, United States
Company size
Who is John Karlen? Overview
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Quick answer
John Karlen is listed as Lead Data Scientist at MassMutual, a with 12885 employees, based in New York, United States. AeroLeads shows a matched LinkedIn profile for John Karlen.
John Karlen previously worked as Data Scientist at Massmutual and Junior Data Scientist at Massmutual. John Karlen holds Master'S Degree, Computer Science from University Of Massachusetts Amherst.
Company email context
Email format at MassMutual
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MassMutual
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Profile bio
About John Karlen
http://www.johnkarlen.net/I'm a data scientist building end-to-end business solutions for industry applications. I have significant domain knowledge in the life insurance industry, and have experience working with mortality survival analysis models, as well as several applications of longitudinal survival analysis to problems in an operations space. I am interested in data science, machine learning, statistics, kernel-based Learning, computer vision. I have a background in physics and data research for large scale physics collaborations.
Listed skills include Unix, Python, Data Analysis, Bayesian Statistics, and 19 others.
Current workplace
John Karlen's current company
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Massmutual
6 roles
John Karlen work experience
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Role listed
Lead Data Scientist
Data Scientist
Project areas have included Random Survival Forests for mortality modeling; Longitudinal Survival Analysis for claims settlement, fraud detection, and cross-sales predictions; time-series forecasting for call center volume; and stochastic sampling for the generalized assignment problem applied to optimizing underwriter queues. While studying feature strength in Random Forests, I published an R package, ClimbeR, for calculating the minimum depth of a maximal subtree.While working here I've made contributions to an open source project called Cookie-Cutter Data Science.
Junior Data Scientist
Data Science projects and participation in Data Science Development Program (DSDP). During the DSDP, I earned my Masters in Computer Science at UMass and applied learned concepts in an industry setting.
Lab Instructor
I taught lab sections for computer science 101 (Intro to CS) and 201 (Data Structures). Students learned data structures with Java, and learned to build GUI video games such as Tetris.
Aug 2014 - May 2015
Team & coworkers
Colleagues at MassMutual
Other employees you can reach at massmutual.com. View company contacts for 12885 employees →
SB
Sebastian Barrera
Colleague at MassmutualNew York City Metropolitan Area, United States
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GG
Geoff Gerow
Colleague at MassmutualGreater Hartford, United States
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JF
Jennifer Foisy
Colleague at MassmutualSpringfield, Massachusetts Metropolitan Area, United States
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TS
Tim Shea
Colleague at MassmutualHampden, Massachusetts, United States
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JP
Jp Pagan
Colleague at MassmutualSpringfield, Massachusetts, United States
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VA
Vladimir Alvarez
Colleague at MassmutualMiddletown, New York, United States
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JL
Jan Levin
Colleague at MassmutualCamarillo, California, United States
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WY
William Yeung
Colleague at MassmutualNew York City Metropolitan Area, United States
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KV
Karen Varelakis
Colleague at MassmutualSpringfield, Massachusetts, United States
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AS
Ashli Stempel
Colleague at MassmutualSpringfield, Massachusetts Metropolitan Area, United States
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Sebastian Barrera
Colleague at MassmutualNew York City Metropolitan Area, United States
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GG
Geoff Gerow
Colleague at MassmutualGreater Hartford, United States
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JF
Jennifer Foisy
Colleague at MassmutualSpringfield, Massachusetts Metropolitan Area, United States
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TS
Tim Shea
Colleague at MassmutualHampden, Massachusetts, United States
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JP
Jp Pagan
Colleague at MassmutualSpringfield, Massachusetts, United States
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VA
Vladimir Alvarez
Colleague at MassmutualMiddletown, New York, United States
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JL
Jan Levin
Colleague at MassmutualCamarillo, California, United States
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WY
William Yeung
Colleague at MassmutualNew York City Metropolitan Area, United States
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KV
Karen Varelakis
Colleague at MassmutualSpringfield, Massachusetts, United States
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AS
Ashli Stempel
Colleague at MassmutualSpringfield, Massachusetts Metropolitan Area, United States
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2 education records
John Karlen education
Master'S Degree, Computer Science
University Of Massachusetts Amherst
Bachelor Of Science (Bs), Physics
University Of Massachusetts Amherst
FAQ
Frequently asked questions about John Karlen
Quick answers generated from the profile data available on this page.
What company does John Karlen work for?
John Karlen works for MassMutual.
What is John Karlen's role at MassMutual?
John Karlen is listed as Lead Data Scientist at MassMutual.
Where is John Karlen based?
John Karlen is based in New York, United States while working with MassMutual.
What companies has John Karlen worked for?
John Karlen has worked for Massmutual and Mount Holyoke College.
Who are John Karlen's colleagues at MassMutual?
John Karlen's colleagues at MassMutual include Sebastian Barrera, Geoff Gerow, Jennifer Foisy, Tim Shea, and Jp Pagan.
How can I contact John Karlen?
You can use AeroLeads to view verified contact signals for John Karlen at MassMutual, including work email, phone, and LinkedIn data when available.
What schools did John Karlen attend?
John Karlen holds Master'S Degree, Computer Science from University Of Massachusetts Amherst.
What skills is John Karlen known for?
John Karlen is listed with skills including Unix, Python, Data Analysis, Bayesian Statistics, Java, Matlab, Physics, and Computer Science.
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